1 #LyX 2.0 created this file. For more info see http://www.lyx.org/
6 \use_default_options true
7 \maintain_unincluded_children false
9 \language_package default
14 \font_typewriter default
15 \font_default_family default
16 \use_non_tex_fonts false
23 \default_output_format default
25 \bibtex_command default
26 \index_command default
27 \paperfontsize default
31 \pdf_bookmarksnumbered false
32 \pdf_bookmarksopen false
33 \pdf_bookmarksopenlevel 1
48 \paperorientation portrait
64 \paragraph_separation indent
65 \paragraph_indentation default
66 \quotes_language english
69 \paperpagestyle default
70 \tracking_changes false
80 lsnes Lua functions reference
87 \begin_layout Standard
88 \begin_inset CommandInset toc
89 LatexCommand tableofcontents
96 \begin_layout Standard
97 \begin_inset Newpage pagebreak
103 \begin_layout Section
107 \begin_layout Standard
108 These tokens are special, and are expanded while the script is being loaded
111 \begin_layout Subsection
112 @@LUA_SCRIPT_FILENAME@@
115 \begin_layout Standard
116 Expanded to string token containing path and filename of this Lua script.
117 Handy for referencing other lua scripts or resources that are relative
121 \begin_layout Standard
122 In practicular, this is suitable to be passed as base argument of various
123 functions like loadfile, dofile, resolve_filename, gui.bitmap_load, gui.bitmap_lo
124 ad_png and gui.bitmap_load_pal.
127 \begin_layout Section
131 \begin_layout Subsection
132 print: Print values to console
135 \begin_layout Itemize
136 Syntax: none print(value...
140 \begin_layout Standard
141 Prints specified values to console.
142 Can print any Lua type at least enough to identify the type and instance.
145 \begin_layout Subsection
146 tostringx: Format a value to string
149 \begin_layout Itemize
150 Syntax: string tostringx(value val)
153 \begin_layout Standard
154 Formats value <val> like print would, and returns the result as a string.
157 \begin_layout Subsection
158 exec: Execute lsnes commands
161 \begin_layout Itemize
162 Syntax: none exec(string cmd)
165 \begin_layout Standard
166 Execute lsnes command <cmd>.
169 \begin_layout Subsection
170 utime: Get current time
173 \begin_layout Itemize
174 Syntax: (number,number) utime()
177 \begin_layout Standard
179 First is time since some epoch in seconds, the second is microseconds mod
180 10^6 since that epoch.
183 \begin_layout Subsection
184 emulator_ready: Check if emulator has been fully initialized
187 \begin_layout Itemize
188 Syntax: boolean emulator_ready()
191 \begin_layout Standard
192 Returns true if emulator has finished booting, false if not (on_startup()
193 will be issued later).
196 \begin_layout Subsection
197 set_idle_timeout: Run function after timeout when emulator is idle
200 \begin_layout Itemize
201 Syntax: none set_idle_timeout(number timeout)
204 \begin_layout Standard
205 Set number of microseconds to block idle for.
206 After this timeout has expired, on_idle() will be called once.
209 \begin_layout Subsection
210 set_timer_timeout: Run function after timeout.
213 \begin_layout Itemize
214 Syntax: none set_timer_timeout(number timeout)
217 \begin_layout Standard
218 Set number of microseconds to block timer for.
219 After this timeout has expired, on_timer() will be called once.
222 \begin_layout Subsection
223 bus_address: Look up address in system bus.
226 \begin_layout Itemize
227 Syntax: none bus_address(number bus_addr)
230 \begin_layout Standard
231 Returns virtual address corresponding to specified address on system bus.
234 \begin_layout Subsection
235 loopwrapper: Convert loop into callable function
238 \begin_layout Itemize
239 Syntax: function loopwrapper(function fun, ...)
242 \begin_layout Standard
243 Calls function <fun> with function and specified arguments.
244 The function passed suspends execution until the function returned is called.
245 Handy for linear flow control among multiple invocations of a hook.
249 \begin_layout LyX-Code
250 on_paint = loopwrapper(function(wait)
254 \begin_layout LyX-Code
259 \begin_layout LyX-Code
261 \begin_inset Quotes eld
265 \begin_inset Quotes erd
271 \begin_layout LyX-Code
276 \begin_layout LyX-Code
281 \begin_layout LyX-Code
285 \begin_layout Subsection
286 list_bindings: List keybindings
289 \begin_layout Itemize
290 Syntax: table list_bindings([string cmd])
293 \begin_layout Standard
294 Get table of all keybindings, indexed by keyspec (modifiers|mask/key).
295 If <cmd> is specified, the table is limited to that command.
296 Also searches for controller keys.
299 \begin_layout Subsection
300 get_alias: Get expansion of alias
303 \begin_layout Itemize
304 Syntax: string get_alias(string aname)
307 \begin_layout Standard
308 Get expansion of given alias <aname>.
311 \begin_layout Subsection
312 set_alias: Set expansion of alias
315 \begin_layout Itemize
316 Syntax: none set_alias(string aname, string value)
319 \begin_layout Standard
320 Set expansion of given alias.
323 \begin_layout Subsection
324 create_ibind: Create invese binding
327 \begin_layout Itemize
328 Syntax: INVERSEBIND create_ibind(string name, string cmd)
331 \begin_layout Standard
332 Return object representing inverse binding with specified name <name> and
333 specified command <cmd>.
336 \begin_layout Itemize
337 Note: To create press/release commands, use aliases +foo and -foo .
340 \begin_layout Itemize
341 Note: Keep the returned object around.
344 \begin_layout Subsection
345 create_command: Create a command
348 \begin_layout Itemize
349 Syntax: COMMANDBIND create_commmand(string name, function a)
352 \begin_layout Itemize
353 Syntax: COMMANDBIND create_commmand(string name, function a, function b)
356 \begin_layout Standard
357 Return object representing a command (pair).
360 \begin_layout Itemize
361 If only one function is specied, the command is level-sensitive, <a> is
365 \begin_layout Itemize
366 If <b> is function, the function is edge-sensitive, <a> is positive edge
367 callback and <b> is negative edge callback.
370 \begin_layout Itemize
371 All callbacks get single argument: The parameters passed.
374 \begin_layout Itemize
375 Keep the returned object around.
378 \begin_layout Subsection
379 loadfile: Load Lua script
382 \begin_layout Itemize
383 Syntax: function loadfile(string filename[, string base])
386 \begin_layout Standard
387 Load lua script from <filename>, resolved relative to <base> (if empty,
391 \begin_layout Subsection
392 dofile: Execute Lua script
395 \begin_layout Itemize
396 Syntax: function dofile(string filename[, string base])
399 \begin_layout Standard
400 Execute lua script from <filename>, resolved relative to <base> (if empty,
401 current directory) and return all return values.
404 \begin_layout Subsection
405 open_file: Open a stream
408 \begin_layout Itemize
409 Syntax: FILEREADER open_file(string filename[, string base])
412 \begin_layout Standard
413 Open file <filename>, resolved relative to <base> (if empty, current directory)
417 \begin_layout Subsection
418 FILEREADER(): Read line/bytes from stream
421 \begin_layout Itemize
422 Syntax: string/nil FILEREADER()
425 \begin_layout Itemize
426 Syntax: string/nil FILEREADER(number bytes)
429 \begin_layout Standard
430 Reads next line or <bytes> bytes from specified file handle.
431 On EOF, nil is returned.
434 \begin_layout Itemize
435 Note: The line-oriented variant reads in text mode, so CR at end of line
439 \begin_layout Subsection
440 FILEREADER:lines: Iterator to read all lines
443 \begin_layout Itemize
444 Syntax: for line in <foo>:lines() do ...
448 \begin_layout Standard
449 Iterator for reading all lines of <foo> in a loop.
452 \begin_layout Subsection
453 resolve_filename: Resolve name of file relative to another
456 \begin_layout Itemize
457 Syntax: string resolve_file(string filename, string base)
460 \begin_layout Standard
461 Resolve name of file <filename> relative to <base> and return the result.
464 \begin_layout Standard
465 \begin_inset Newpage pagebreak
471 \begin_layout Section
475 \begin_layout Standard
476 Bitwise logical functions and related.
479 \begin_layout Subsection
480 bit.none/bit.bnot: Bitwise none or NOT function
483 \begin_layout Itemize
484 Syntax: number bit.none(number...)
487 \begin_layout Itemize
488 Syntax: number bit.bnot(number...)
491 \begin_layout Standard
492 48-bit bitwise NOT / NONE function (set bits that are set in none of the
496 \begin_layout Subsection
497 bit.any/bit.bor: Bitwise any or OR function
500 \begin_layout Itemize
501 Syntax: number bit.any(number...)
504 \begin_layout Itemize
505 Syntax: number bit.bor(number...)
508 \begin_layout Standard
509 48-bit bitwise OR / ANY function (set bits that are set in any of the arguments).
512 \begin_layout Subsection
513 bit.all/bit.band: Bitwise all or AND function
516 \begin_layout Itemize
517 Syntax: number bit.all(number...)
520 \begin_layout Itemize
521 Syntax: number bit.band(number...)
524 \begin_layout Standard
525 48-bit bitwise AND / ALL function (set bits that are set in all of the arguments
529 \begin_layout Subsection
530 bit.parity/bit.bxor: Bitwise parity or XOR function
533 \begin_layout Itemize
534 Syntax: number bit.parity(number...)
537 \begin_layout Itemize
538 Syntax: number bit.bxor(number...)
541 \begin_layout Standard
542 48-bit bitwise XOR / PARITY function (set bits that are set in odd number
546 \begin_layout Subsection
547 bit.lrotate: Rotate a number left
550 \begin_layout Itemize
551 Syntax: number bit.lrotate(number base[, number amount[, number bits]])
554 \begin_layout Standard
555 Rotate <bits>-bit (max 48, default 48) number <base> left by <amount> (default
559 \begin_layout Subsection
560 bit.rrotate: Rotate a number right
563 \begin_layout Itemize
564 Syntax: number bit.rrotate(number base[, number amount[, number bits]])
567 \begin_layout Standard
568 Rotate <bits>-bit (max 48, default 48) number <base> right by <amount> (default
572 \begin_layout Subsection
573 bit.lshift: Shift a number left
576 \begin_layout Itemize
577 Syntax: number bit.lshift(number base[, number amount[, number bits]])
580 \begin_layout Standard
581 Shift <bits>-bit (max 48, default 48) number <base> left by <amount> (default
583 The new bits are filled with zeroes.
586 \begin_layout Subsection
587 bit.lrshift: Shift a number right (logical)
590 \begin_layout Itemize
591 Syntax: number bit.lrshift(number base[, number amount[, number bits]])
594 \begin_layout Standard
595 Shift <bits>-bit (max 48, default 48) number <base> logically right by <amount>
597 The new bits are filled with zeroes.
600 \begin_layout Subsection
601 bit.arshift: Shift a number right (arithmetic)
604 \begin_layout Itemize
605 Syntax: number bit.arshift(number base[, number amount[, number bits]])
608 \begin_layout Standard
609 Shift <bits>-bit (max 48, default 48) number <base> logically right by <amount>
611 The new bits are shifted in with copy of the high bit.
614 \begin_layout Subsection
615 bit.extract: Extract/shuffle bits from number
618 \begin_layout Itemize
619 Syntax: number bit.extract(number base[, number bit0[, number bit1,...]])
622 \begin_layout Standard
623 Returns number that has bit0-th bit as bit 0, bit1-th bit as 1 and so on.
626 \begin_layout Itemize
627 Note: Bit numbers up to 51 should work reliably (then things start falling
628 apart due to double precision issues).
631 \begin_layout Itemize
632 Note: There are two special bit positions, true and false, standing for
633 always set bit and always clear bit.
636 \begin_layout Subsection
637 bit.value: Construct number with specified bits set
640 \begin_layout Itemize
641 Syntax: number bit.value([number bit1[, number bit2,...]])
644 \begin_layout Standard
645 Returns bitwise OR of 1 left shifted by <bit1> places, 1 left shifted by
646 <bit2> places and so on.
647 As special value, nil argument is no-op.
650 \begin_layout Subsection
651 bit.test_any: Test if any bit is set
654 \begin_layout Itemize
655 Syntax: boolean bit.test_any(number a, number b)
658 \begin_layout Standard
659 Returns true if bitwise and of <a> and <b> is nonzero, otherwise false.
662 \begin_layout Subsection
663 bit.test_all: Test if all bits are set
666 \begin_layout Itemize
667 Syntax: boolean bit.test_all(number a, number b)
670 \begin_layout Standard
671 Returns true if bitwise and of <a> and <b> equals <b>, otherwise false.
674 \begin_layout Subsection
675 bit.popcount: Population count
678 \begin_layout Itemize
679 Syntax: number bit.popcount(number a)
682 \begin_layout Standard
683 Returns number of set bits in <a>.
686 \begin_layout Subsection
687 bit.clshift: Chained left shift
690 \begin_layout Itemize
691 Syntax: (number, number) bit.clshift(number a, number b, [number amount,[number
695 \begin_layout Standard
696 Does chained left shift on <a>, <b> by <amount> positions (default 1), assuming
697 numbers to be of specified number of bits <bits> (default 48).
700 \begin_layout Subsection
701 bit.crshift: Chained right shift
704 \begin_layout Itemize
705 Syntax: (number, number) bit.crshift(number a, number b, [number amount,[number
709 \begin_layout Standard
710 Does chained right shift on <a>, <b> by <amount> positions (default 1),
711 assuming numbers to be of specified number of bits <bits> (default 48).
714 \begin_layout Subsection
715 bit.flagdecode: Decode bitfield into flags
718 \begin_layout Itemize
719 Syntax: string bit.flagdecode(number a, number bits, [string on, [string
723 \begin_layout Standard
724 Return string of length bits where ith character is ith character of on
725 if bit i is on, otherwise ith character of off.
726 Out of range reads give last character.
729 \begin_layout Itemize
730 Note: <on> defaults to '*' if empty.
733 \begin_layout Itemize
734 Note: <off> defaults to '-' if empty.
737 \begin_layout Subsection
738 bit.rflagdecode: Decode bitfield into flags
741 \begin_layout Itemize
742 Syntax: string bit.rflagdecode(number a, number bits, [string on, [string
746 \begin_layout Standard
747 Like bit.flagdecode, but outputs the string in the opposite order (most significa
751 \begin_layout Standard
752 \begin_inset Newpage pagebreak
758 \begin_layout Section
762 \begin_layout Itemize
763 Functions that draw to screen can only only be called in on_paint and on_video
764 callbacks or if non-default render queue has been set.
767 \begin_layout Itemize
769 Bits 0-7 are the blue component, bits 8-15 are the green component, bits
770 16-23 are the red component, bits 24-31 are alpha component (0 is fully
771 opaque, 255 is almost transparent).
772 -1 is the fully transparent color.
775 \begin_layout Itemize
776 Alpha values greater than 127 do work properly.
779 \begin_layout Itemize
780 Origin of coordinates is at top left corner of game display area.
781 Left and top gaps correspond to negative coordinates.
784 \begin_layout Subsection
785 gui.resolution: Get current resolution
788 \begin_layout Itemize
789 Syntax: (number, number) gui.resolution()
792 \begin_layout Standard
793 Returns 2-tuple (hresolution, vresolution).
796 \begin_layout Subsection
797 gui.left_gap/gui.right_gap/gui.top_gap/gui.bottom_gap: Set edge gaps
800 \begin_layout Itemize
801 Syntax: number gui.left_gap(number gap)
804 \begin_layout Itemize
805 Syntax: number gui.right_gap(number gap)
808 \begin_layout Itemize
809 Syntax: number gui.top_gap(number gap)
812 \begin_layout Itemize
813 Syntax: number gui.bottom_gap(number gap)
816 \begin_layout Standard
817 Set the specified edge gap to specified value <gap> (max gap is 8191).
818 If successful, old gap is returned.
821 \begin_layout Subsection
822 gui.delta_left_gap/gui.delta_right_gap/gui.delta_top_gap/gui.delta_bottom_gap:
826 \begin_layout Itemize
827 Syntax: number gui.delta_left_gap(number dgap)
830 \begin_layout Itemize
831 Syntax: number gui.delta_right_gap(number dgap)
834 \begin_layout Itemize
835 Syntax: number gui.delta_top_gap(number dgap)
838 \begin_layout Itemize
839 Syntax: number gui.delta_bottom_gap(number dgap)
842 \begin_layout Standard
843 Increase the specified edge gap by specified value <dgap> (max gap is 8191)
844 and return the old gap (returns nothing on error).
847 \begin_layout Subsection
848 gui.text/gui.textH/gui.textV,gui.textHV: Draw text
851 \begin_layout Itemize
852 Syntax: none gui.text(number x, number y, string text[, number fgc[, number
856 \begin_layout Itemize
857 Syntax: none gui.textH(number x, number y, string text[, number fgc[, number
861 \begin_layout Itemize
862 Syntax: none gui.textV(number x, number y, string text[, number fgc[, number
866 \begin_layout Itemize
867 Syntax: none gui.textHV(number x, number y, string text[, number fgc[, number
871 \begin_layout Standard
872 Draw specified text on the GUI (each character cell is 8 or 16 wide and
877 \begin_layout Itemize
878 x: X-coordinate to start the drawing from (and x-coordinate at begining
882 \begin_layout Itemize
883 y: Y-coordinate to start the drawing from.
886 \begin_layout Itemize
887 text: The text to draw.
890 \begin_layout Itemize
891 fgc: Text color (default is 0xFFFFFF (white))
894 \begin_layout Itemize
895 bgc: Background color (default is -1 (transparent))
898 \begin_layout Standard
899 Note: The H variants draw at double width and V variants draw at double
903 \begin_layout Subsection
904 gui.rectangle: Draw a rectangle
907 \begin_layout Itemize
908 Syntax: none gui.rectangle(number x, number y, number width, number height[,
909 number thickness[, number outline[, number fill]]])
912 \begin_layout Standard
913 Draw rectangle on the GUI.
917 \begin_layout Itemize
918 x: X-coordinate of left edge.
921 \begin_layout Itemize
922 y: Y-coordinate of upper edge.
925 \begin_layout Itemize
926 width: Width of rectangle.
929 \begin_layout Itemize
930 height: Height of rectangle.
933 \begin_layout Itemize
934 thickness: Thickness of outline (default is 1).
937 \begin_layout Itemize
938 outline: Color of outline (default is 0xFFFFFF (white))
941 \begin_layout Itemize
942 fill: Color of fill (default is -1 (transparent))
945 \begin_layout Subsection
946 gui.box: Draw a 3D-effect box
949 \begin_layout Itemize
950 Syntax: none gui.box(number x, number y, number width, number height[, number
951 thickness[, number outline1[,number outline2[, number fill]]]])
954 \begin_layout Standard
955 Draw rectangle with 3D effect on the GUI.
959 \begin_layout Itemize
960 x: X-coordinate of left edge.
963 \begin_layout Itemize
964 y: Y-coordinate of upper edge.
967 \begin_layout Itemize
968 width: Width of rectangle.
971 \begin_layout Itemize
972 height: Height of rectangle.
975 \begin_layout Itemize
976 thickness: Thickness of outline (default is 1).
979 \begin_layout Itemize
980 outline1: First color of outline (default is 0xFFFFFF (white))
983 \begin_layout Itemize
984 outline2: First color of outline (default is 0x808080 (dark gray))
987 \begin_layout Itemize
988 fill: Color of fill (default is 0xC0C0C0 (light grayy))
991 \begin_layout Subsection
992 gui.pixel: Draw a single pixel
995 \begin_layout Itemize
996 Syntax: none gui.pixel(number x, number y[, number color])
999 \begin_layout Standard
1000 Draw one pixel on the GUI.
1004 \begin_layout Itemize
1005 x: X-coordinate of the pixel
1008 \begin_layout Itemize
1009 y: Y-coordinate of the pixel
1012 \begin_layout Itemize
1013 color: Color of the pixel (default is 0xFFFFFF (white))
1016 \begin_layout Subsection
1017 gui.crosshair: Draw a crosshair
1020 \begin_layout Itemize
1021 Syntax: none gui.crosshair(number x, number y[, number length[, number color]])
1024 \begin_layout Standard
1029 \begin_layout Itemize
1030 x: X-coordinate of the crosshair
1033 \begin_layout Itemize
1034 y: Y-coordinate of the crosshair
1037 \begin_layout Itemize
1038 length: Length of the crosshair lines (default 10).
1041 \begin_layout Itemize
1042 color: Color of the crosshair (default is 0xFFFFFF (white))
1045 \begin_layout Subsection
1046 gui.line: Draw a line
1049 \begin_layout Itemize
1050 Syntax: none gui.line(number x1, number y1, number x2, number y2[, number
1054 \begin_layout Standard
1059 \begin_layout Itemize
1060 x1: X-coordinate of one end.
1063 \begin_layout Itemize
1064 y1: Y-coordinate of one end.
1067 \begin_layout Itemize
1068 x2: X-coordinate of the other end.
1071 \begin_layout Itemize
1072 y2: Y-coordinate of the other end.
1075 \begin_layout Itemize
1076 color: Color of the line (default is 0xFFFFFF (white)).
1079 \begin_layout Subsection
1080 gui.circle: Draw a (filled) circle
1083 \begin_layout Itemize
1084 Syntax: none gui.circle(number x, number y, number r[, number thick[, number
1085 border[, number fil]]])
1088 \begin_layout Standard
1093 \begin_layout Itemize
1094 x: X-coordinate of the center
1097 \begin_layout Itemize
1098 y: Y-coordinate of the center
1101 \begin_layout Itemize
1102 r: The radius of the circle
1105 \begin_layout Itemize
1106 thick: Border thickness
1109 \begin_layout Itemize
1110 border: Border color (default is 0xFFFFFF (white))
1113 \begin_layout Itemize
1114 fill: Fill color (default is -1 (transparent)).
1117 \begin_layout Subsection
1118 gui.bitmap_draw: Draw a bitmap
1121 \begin_layout Itemize
1122 Syntax: none gui.bitmap_draw(number x, number y, BITMAP bitmap, PALETTE palette)
1125 \begin_layout Itemize
1126 Syntax: none gui.bitmap_draw(number x, number y, DBITMAP bitmap)
1129 \begin_layout Standard
1130 Draw a bitmap <bitmap> on screen with specified palette <palette> (if bitmap
1135 \begin_layout Itemize
1136 x: X-coordinate of left edge.
1139 \begin_layout Itemize
1140 y: Y-coordinate of top edge.
1143 \begin_layout Itemize
1144 bitmap: The bitmap to draw
1147 \begin_layout Itemize
1148 palette: The palette to draw the bitmap using.
1151 \begin_layout Subsection
1152 gui.palette_new: Create a new palette
1155 \begin_layout Itemize
1156 Syntax: PALETTE gui.palette_new()
1159 \begin_layout Standard
1160 Returns a new palette (initially all transparent).
1164 \begin_layout Subsection
1165 gui.bitmap_new: Create a new bitmap
1168 \begin_layout Itemize
1169 Syntax: BITMAP/DBITMAP gui.bitmap_new(number w, number h, boolean direct[,
1173 \begin_layout Standard
1174 Returns a new bitmap/dbitmap.
1177 \begin_layout Standard
1181 \begin_layout Itemize
1182 w: The width of new bitmap
1185 \begin_layout Itemize
1186 h: The height of new bitmap
1189 \begin_layout Itemize
1190 direct: If true, the returned bitmap is dbitmap, otherwise bitmap.
1193 \begin_layout Itemize
1194 icolor: Initital fill color (defaults to 0 on BITMAP, -1 on DBITMAP)
1197 \begin_layout Subsection
1198 gui.bitmap_load/gui.bitmap_load_str: Load a bitmap from file or string
1201 \begin_layout Itemize
1202 Syntax: DBITMAP/(BITMAP, PALETTE) gui.bitmap_load(string file[, string base])
1205 \begin_layout Itemize
1206 Syntax: DBITMAP/(BITMAP, PALETTE) gui.bitmap_load_str(string content)
1209 \begin_layout Standard
1210 Reads file <file> (resolved relative to <base>) or string <content> and
1211 returns loaded bitmap/dbitmap (if bitmap, the second return value is palette
1215 \begin_layout Subsection
1216 gui.bitmap_load_png/gui.bitmap_load_png_str: Load a bitmap from PNG
1219 \begin_layout Itemize
1220 Syntax: DBITMAP/(BITMAP, PALETTE) gui.bitmap_load_png(string file[, string
1224 \begin_layout Itemize
1225 Syntax: DBITMAP/(BITMAP, PALETTE) gui.bitmap_load_png_str(string content)
1228 \begin_layout Standard
1229 Load a bitmap from PNG file <file> (resolved relative to <base>) or BASE64
1230 encoded content <content>.
1233 \begin_layout Itemize
1234 If the PNG is of color type 3 (PALETTE), returns two value.
1235 First is BITMAP containing the image data from the PNG and second is PALETTE
1236 containg the palette data from the PNG.
1239 \begin_layout Itemize
1240 For color types 0 (GRAY), 2 (RGB), 4 (GRAY_ALPHA) and 6 (RGBA), returns
1241 one DBITMAP containg the image data loaded from the PNG.
1244 \begin_layout Subsection
1245 gui.bitmap_load_pal/gui.bitmap_load_pal_str: Load a palette
1248 \begin_layout Itemize
1249 Syntax: PALETTE gui.bitmap_load_pal(string file[, string base])
1252 \begin_layout Itemize
1253 Syntax: PALETTE gui.bitmap_load_pal_str(string content)
1256 \begin_layout Standard
1257 Load a palette from file <file>(resolved relative to <base>) or string <content>.
1260 \begin_layout Itemize
1261 The kinds of lines supported:
1265 \begin_layout Itemize
1266 Blank or just whitespace: Ignored
1269 \begin_layout Itemize
1270 First non-whitespace is '#': Ignored
1273 \begin_layout Itemize
1274 <r> <g> <b>: Fully opaque color with specified RGB values (0-255)
1277 \begin_layout Itemize
1278 <r> <g> <b> <a>: Color with specified RGB values (0-255) and specified alpha
1279 (0-256, 0 being fully transparent and 256 fully opaque).
1282 \begin_layout Itemize
1283 transparent: Fully transparent color
1287 \begin_layout Subsection
1288 gui.palette_set: Set palette entry
1291 \begin_layout Itemize
1292 Syntax: none gui.palette_set(PALETTE palette, number index, number color)
1295 \begin_layout Standard
1296 Sets color in palette.
1300 \begin_layout Itemize
1301 palette: The palette to manipulate
1304 \begin_layout Itemize
1305 index: Index of color (0-65535).
1308 \begin_layout Itemize
1309 color: The color value.
1312 \begin_layout Subsection
1313 gui.bitmap_pset: Set pixel in bitmap
1316 \begin_layout Itemize
1317 Syntax: none gui.bitmap_pset(BITMAP/DBITMAP bitmap, number x, number y, number
1321 \begin_layout Standard
1322 Sets specified pixel in bitmap.
1326 \begin_layout Itemize
1327 bitmap: The bitmap to manipulate
1330 \begin_layout Itemize
1331 x: The x-coordinate of the pixel.
1334 \begin_layout Itemize
1335 y: The y-coordinate of the pixel.
1338 \begin_layout Itemize
1339 color: If bitmap is a bitmap, color index (0-65535).
1340 Otherwise color value.
1343 \begin_layout Subsection
1344 gui.bitmap_pget: Get pixel in bitmap
1347 \begin_layout Itemize
1348 Syntax: number gui.bitmap_pget(BITMAP/DBITMAP bitmap, number x, number y)
1351 \begin_layout Standard
1352 Gets specified pixel in bitmap.
1356 \begin_layout Itemize
1357 bitmap: The bitmap to query
1360 \begin_layout Itemize
1361 x: The x-coordinate of the pixel.
1364 \begin_layout Itemize
1365 y: The y-coordinate of the pixel.
1368 \begin_layout Standard
1369 The bitmap color (color index if paletted, otherwise color value).
1372 \begin_layout Subsection
1373 gui.bitmap_size: Get size of bitmap
1376 \begin_layout Itemize
1377 Syntax: (number, number) gui.bitmap_size(BITMAP/DBITMAP bitmap)
1380 \begin_layout Standard
1381 Get size of bitmap <bitmap>.
1382 The first return is the width, the second is the height.
1385 \begin_layout Itemize
1386 Note: Can be used anywhere.
1389 \begin_layout Subsection
1390 gui.bitmap_blit: Blit a bitmap into another
1393 \begin_layout Itemize
1394 Syntax: none gui.bitmap_blit(BITMAP dest, number dx, number dy, BITMAP src,
1395 number sx, number sy, number w, number h[, number ck])
1398 \begin_layout Itemize
1399 Syntax: none gui.bitmap_blit(DBITMAP dest, number dx, number dy, DBITMAP
1400 src, number sx, number sy, number w, number h[, number ck])
1403 \begin_layout Itemize
1404 Syntax: none gui.bitmap_blit(DBITMAP dest, number dx, number dy, BITMAP src,
1405 PALETTE pal, number sx, number sy, number w, number h[, number ck])
1408 \begin_layout Standard
1409 Blit a part of bitmap to another.
1413 \begin_layout Itemize
1414 dest: Destination to blit to.
1417 \begin_layout Itemize
1418 dx: left edge of target
1421 \begin_layout Itemize
1422 dy: Top edge of target
1425 \begin_layout Itemize
1426 src: The source to blit from.
1429 \begin_layout Itemize
1430 pal: The palette to use in blit.
1433 \begin_layout Itemize
1434 sx: left edge of source
1437 \begin_layout Itemize
1438 sy: Top edge of source
1441 \begin_layout Itemize
1445 \begin_layout Itemize
1446 h: Height of region.
1449 \begin_layout Itemize
1451 Pixels of this color are not blitted.
1455 \begin_layout Itemize
1456 If soruce bitmap is bitmap, this is color index of colorkey.
1457 Values outside range 0-65535 cause no key to be used as colorkey.
1460 \begin_layout Itemize
1461 If source bitmap is dbitmap, this is the color value of colorkey.
1464 \begin_layout Itemize
1465 May be absent or nil for no colorkey blit.
1469 \begin_layout Subsection
1470 gui.repaint: Arrange a repaint
1473 \begin_layout Itemize
1474 Syntax: none gui.repaint()
1477 \begin_layout Standard
1478 Request on_repaint() to happen as soon as possible.
1481 \begin_layout Subsection
1482 gui.synchronous_repaint: Paint screen now
1485 \begin_layout Itemize
1486 Syntax: none gui.synchronous_repaint(RENDERQUEUE queue)
1489 \begin_layout Standard
1490 Paints specified render queue on screen right there and then.
1493 \begin_layout Subsection
1494 gui.subframe_update: Enable/Disable subframe updates
1497 \begin_layout Itemize
1498 Syntax: none gui.subframe_update(boolean on)
1501 \begin_layout Standard
1502 Request subframe updates (calling on_paint() on subframes) to happen (<on>=true)
1503 or not happen (<on>=false).
1506 \begin_layout Subsection
1507 gui.screenshot: Write a screenshot
1510 \begin_layout Itemize
1511 Syntax: none gui.screenshot(string filename)
1514 \begin_layout Standard
1515 Write PNG screenshot of the current frame (no drawings) to specified file
1519 \begin_layout Subsection
1520 gui.color: Compose a color.
1523 \begin_layout Itemize
1524 Syntax: number gui.color(number r, number g, number b[, number a])
1527 \begin_layout Standard
1528 Returns color (in notation Lua scripts use) corresponding to color (<r>,<g>,<b>)
1529 , each component in scale 0-255.
1530 If <a> is specified, that is alpha (0 is fully transparent, 256(sic) is
1532 The default alpha is 256.
1535 \begin_layout Subsection
1536 gui.status: Set status variable
1539 \begin_layout Itemize
1540 Syntax: none gui.status(string name, string value)
1543 \begin_layout Standard
1545 \begin_inset Quotes eld
1549 \begin_inset Quotes erd
1552 to <value> in status area.
1555 \begin_layout Subsection
1556 gui.rainbow: Rainbow color calculation
1559 \begin_layout Itemize
1560 Syntax: number gui.rainbow(number step, number steps[, number color])
1563 \begin_layout Standard
1564 Perform hue rotation of color <color> (default bright red), by <step> steps.
1565 The number of steps per full rotation is given by absolute value of <steps>.
1568 \begin_layout Standard
1569 If <steps> is negative, the rotation will be counterclockwise.
1572 \begin_layout Subsection
1573 gui.renderq_new: Create a render queue
1576 \begin_layout Itemize
1577 Syntax: RENDERQUEUE gui.renderq_new(number width, number height)
1580 \begin_layout Standard
1581 Create render queue with specified reported size and return it.
1584 \begin_layout Subsection
1585 gui.renderq_clear: Clear a render queue
1588 \begin_layout Itemize
1589 Syntax: none gui.renderq_clear(RENDERQUEUE queue)
1592 \begin_layout Standard
1593 Clear specified render queue.
1596 \begin_layout Subsection
1597 gui.renderq_set: Change active render queue
1600 \begin_layout Itemize
1601 Syntax: none gui.renderq_set(RENDERQUEUE queue)
1604 \begin_layout Standard
1605 Switch to specified render queue.
1606 Use nil as queue to switch to default queue.
1609 \begin_layout Itemize
1610 Note: When switched to another queue, all drawing functions work and draw
1611 there, even outside on_video/on_paint.
1614 \begin_layout Subsection
1615 gui.renderq_run: Run render queue
1618 \begin_layout Itemize
1619 Syntax: none gui.renderq_run(RENDERQUEUE queue)
1622 \begin_layout Standard
1623 Run specified render queue, copying the objects to current render queue.
1627 \begin_layout Itemize
1628 Warning: Don't try to run the current render queue.
1631 \begin_layout Subsection
1632 gui.loadfont: Load a font file
1635 \begin_layout Itemize
1636 Syntax: CUSTOMFONT gui.loadfont(string filename)
1639 \begin_layout Standard
1640 Loads font from specified file (CUSTOMFONT object).
1643 \begin_layout Subsection
1644 CUSTOMFONT(): Render text to screen
1647 \begin_layout Itemize
1648 Syntax: none CUSTOMFONT(number x, number y, string text[, number fgc[, number
1649 bgc[, number hlc]]])
1652 \begin_layout Standard
1653 Draw string with custom font to screen.
1654 The parameters are the same as in gui.text, except <hlc> is the halo color
1655 (default is no halo).
1659 \begin_layout Subsection
1660 gui.adjust_transparency: Adjust transparency of DBITMAP or PALETTE
1663 \begin_layout Itemize
1664 Syntax: none gui.adjust_transparency(DBITMAP obj, number adj)
1667 \begin_layout Itemize
1668 Syntax: none gui.adjust_transparency(PALETTE obj, number adj)
1671 \begin_layout Standard
1672 Multiply alpha channel of <obj> by <adj>/256.
1674 \begin_inset Quotes eld
1678 \begin_inset Quotes erd
1681 out of solid bitmaps.
1684 \begin_layout Subsection
1685 gui.kill_frame: Kill video frame and associated sound
1688 \begin_layout Itemize
1689 Syntax: none gui.kill_frame()
1692 \begin_layout Standard
1693 Kills the currently dumped video frame + the associated sound.
1694 Only valid in on_video callback.
1697 \begin_layout Subsection
1698 gui.arrow: Draw an arrow
1701 \begin_layout Itemize
1702 Syntax: none gui.arrow(number x, number y, number length, number hwidth,
1703 number direction[, bool fill[, number color[, number twidth[, number hthick]]]]
1707 \begin_layout Standard
1708 Draws an arrow using color <color>.
1709 The tip of arrow is at (<x>, <y>).
1713 \begin_layout Enumerate
1714 <length>: The length of arrow tail.
1717 \begin_layout Enumerate
1718 <hwidth>: The width of arrow head.
1722 \begin_layout Enumerate
1723 <direction>: Direction of arrow.
1724 0 is to right, +1 rotates 45 degrees counterclockwise.
1727 \begin_layout Enumerate
1728 <fill>: If true, fill the arrow head.
1732 \begin_layout Enumerate
1733 <twidth>: Tail width.
1738 \begin_layout Enumerate
1739 <hthick>: Head thickness (only used if <fill> is false).
1740 Default is <twidth>.
1743 \begin_layout Subsection
1744 gui.tilemap: Create a tilemap
1747 \begin_layout Itemize
1748 Syntax: TILEMAP gui.tilemap(number w, number h, number bw, number bh)
1751 \begin_layout Standard
1752 Create a new tilemap of size <w>*<h>, with each cell being <bw>*<bh>.
1755 \begin_layout Subsection
1756 TILEMAP:getsize: Query tilemap size
1759 \begin_layout Itemize
1760 Syntax: number, number TILEMAP:getsize()
1763 \begin_layout Standard
1764 Return size of tilemap (width first).
1767 \begin_layout Subsection
1768 TILEMAP:getcsize: Query tilemap cell size
1771 \begin_layout Itemize
1772 Syntax: number, number TILEMAP:getcsize()
1775 \begin_layout Standard
1776 Return size of tilemap cell (width first).
1779 \begin_layout Subsection
1780 TILEMAP:get: Query tilemap cell
1783 \begin_layout Itemize
1784 Syntax: none TILEMAP:get(number x, number y)
1787 \begin_layout Itemize
1788 Syntax: dbitmap TILEMAP:get(number x, number y)
1791 \begin_layout Itemize
1792 Syntax: bitmap,palette TILEMAP:get(number x, number y)
1795 \begin_layout Standard
1796 Return contents of cell at <x>,<y>.
1799 \begin_layout Subsection
1800 TILEMAP:set: Set tilemap cell
1803 \begin_layout Itemize
1804 Syntax: none TILEMAP:set(number x, number y)
1807 \begin_layout Itemize
1808 Syntax: none TILEMAP:set(number x, number y, dbitmap b)
1811 \begin_layout Itemize
1812 Syntax: none TILEMAP:set(number x, number y, bitmap b, palette p)
1815 \begin_layout Standard
1816 Set contents of cell at <x>,<y>.
1817 If no bitmap/dbitmap is given, cell is cleared.
1818 Otherwise specified (d)bitmap is used (with specified palette if bitmap).
1821 \begin_layout Subsection
1822 TILEMAP:scroll: Scroll tilemap
1825 \begin_layout Itemize
1826 Syntax: none TILEMAP:scroll(number ox, number oy)
1829 \begin_layout Itemize
1830 Syntax: none TILEMAP:scroll(number ox, number oy, number x, number y, number
1834 \begin_layout Itemize
1835 Syntax: none TILEMAP:scroll(number ox, number oy, number x, number y, number
1836 w, number h, boolean circx, boolean circy)
1839 \begin_layout Standard
1840 Scrolls the tilemap tiles by <ox>,<oy>.
1841 If <x>,<y>,<w>,<h> is specified, the scrolling is limited to <w>*<h> window
1842 starting at <x>,<y> (in tiles).
1845 \begin_layout Standard
1846 If <circx> is true, the window is circular in horizontal direction.
1847 Similarly with <circy> and vertical direciton.
1850 \begin_layout Subsection
1851 TILEMAP:draw: Draw tilemap
1854 \begin_layout Itemize
1855 Syntax: none TILEMAP:draw(number x, number y)
1858 \begin_layout Itemize
1859 Syntax: none TILEMAP:draw(number x, number y, number x0, number y0)
1862 \begin_layout Itemize
1863 Syntax: none TILEMAP:draw(number x, number y, number x0, number y0, number
1867 \begin_layout Standard
1868 Draw tilemap at <x>,<y>.
1869 If <x0>,<y0> is given, that is tilemap coordinate (in pixels) of upper
1871 If <w>,<h> is given, that is the size of window to draw (in pixels)
1874 \begin_layout Standard
1875 \begin_inset Newpage pagebreak
1881 \begin_layout Section
1885 \begin_layout Standard
1887 Functions manipulating input are only available in on_input callback.
1890 \begin_layout Subsection
1891 input.get: Read controller button/axis (deprecated)
1894 \begin_layout Itemize
1895 Syntax: number input.get(number controller, number index)
1898 \begin_layout Standard
1899 Read the specified index <index> (zero-based) from specified controller
1900 <controller> (zero-based).
1904 \begin_layout Subsection
1905 input.set: Write controller button/axis (deprecated)
1908 \begin_layout Itemize
1909 Syntax: none input.set(number controller, number index, number value)
1912 \begin_layout Standard
1913 Write the specified index <index> (zero-based) from specified controller
1914 <controller> (zero-based), storing value <value>.
1917 \begin_layout Subsection
1918 input.get2: Read controller button/axis
1921 \begin_layout Itemize
1922 Syntax: number input.get2(number port, number controller, number index)
1925 \begin_layout Standard
1926 Read the specified input tuple.
1927 Port 0 is system port.
1930 \begin_layout Subsection
1931 input.set2: Write controller button/axis
1934 \begin_layout Itemize
1935 Syntax: input.set2(number port, number controller, number index, number value)
1938 \begin_layout Standard
1939 Write the specified input tuple.
1940 Port 0 is system port.
1943 \begin_layout Subsection
1944 input.lcid_to_pcid2: Look up logical controller
1947 \begin_layout Itemize
1948 Syntax: (number, number) input.lcid_to_pcid2(number lcid)
1951 \begin_layout Standard
1952 Look up physical pcid pair (port, controller) corresponding to specified
1953 logical controller (1-based).
1954 Returns nothing if controller does not exist.
1957 \begin_layout Subsection
1958 input.port_type: Look up port type
1961 \begin_layout Itemize
1962 Syntax: string input.port_type(number port)
1965 \begin_layout Standard
1966 Return type of specified port.
1969 \begin_layout Subsection
1970 input.controller_info: Get information about controller
1973 \begin_layout Itemize
1974 Syntax: table input.controller_info(number port, number controller)
1977 \begin_layout Standard
1978 Get controller info for specified controller.
1979 If controller does not exist, returns nil.
1980 Otherwise returns a table with following fields:
1983 \begin_layout Itemize
1984 type (string): Type of the controller.
1987 \begin_layout Itemize
1988 class (string): Class of the controller.
1991 \begin_layout Itemize
1992 classnum (number): Number of the controller within its class (1-based)
1995 \begin_layout Itemize
1996 lcid (number): Logical controller number of the controller.
1999 \begin_layout Itemize
2000 button_count (number): Number of buttons on controller
2003 \begin_layout Itemize
2004 buttons (array): Array of following info about each button:
2008 \begin_layout Itemize
2009 type (string): Type of button.
2011 \begin_inset Quotes eld
2015 \begin_inset Quotes erd
2019 \begin_inset Quotes eld
2023 \begin_inset Quotes erd
2027 \begin_inset Quotes eld
2031 \begin_inset Quotes erd
2035 \begin_inset Quotes eld
2039 \begin_inset Quotes erd
2045 \begin_layout Itemize
2046 name (string): Name of button.
2049 \begin_layout Itemize
2050 symbol (string): Symbol of button.
2051 Only present for type
2052 \begin_inset Quotes eld
2056 \begin_inset Quotes erd
2062 \begin_layout Itemize
2063 hidden (boolean): True if hidden button.
2068 \begin_layout Subsection
2069 input.veto_button: Veto a button press
2072 \begin_layout Itemize
2073 Syntax: none input.veto_button()
2076 \begin_layout Standard
2077 Signals that the button event should be vetoed.
2078 Only valid in on_button callback.
2081 \begin_layout Subsection
2082 input.geta: Get all buttons for controller (deprecated)
2085 \begin_layout Itemize
2086 Syntax: (number, number...) input.geta(number controller)
2089 \begin_layout Standard
2090 Get input state for entiere controller.
2091 Returns n return values.
2094 \begin_layout Itemize
2095 1st return value: Bitmask: bit i is set if i:th index is nonzero
2098 \begin_layout Itemize
2099 2nd- return value: value of i:th index.
2102 \begin_layout Subsection
2103 input.seta: Set all buttons for controller (deprecated)
2106 \begin_layout Itemize
2107 Syntax: none input.seta(number controller, number bitmask, number args...)
2110 \begin_layout Standard
2111 Set state for entiere controller.
2112 args is up to N values for indices (overriding values in bitmask if specified).
2115 \begin_layout Subsection
2116 input.controllertype: Get controller type (deprecated)
2119 \begin_layout Itemize
2120 syntax: string input.controllertype(number controller)
2123 \begin_layout Standard
2124 Get the type of controller as string.
2127 \begin_layout Subsection
2128 input.reset: Execute (delayed) reset
2131 \begin_layout Itemize
2132 Syntax: none input.reset([number cycles])
2135 \begin_layout Standard
2137 If <cycles> is greater than zero, do delayed reset.
2138 0 (or no value) causes immediate reset.
2141 \begin_layout Itemize
2142 Note: Only available with subframe flag false.
2145 \begin_layout Subsection
2146 input.raw: Return raw input data
2149 \begin_layout Itemize
2150 Syntax: table input.raw()
2153 \begin_layout Standard
2154 Returns table of tables of all available keys and axes.
2155 The first table is indexed by key name (platform-dependent!), and the inner
2156 table has the following fields:
2159 \begin_layout Itemize
2160 value: Last reported value for control
2164 \begin_layout Itemize
2165 For keys: 1 for pressed, 0 for released.
2168 \begin_layout Itemize
2169 For axes: -32767...32767.
2172 \begin_layout Itemize
2173 For presure-sensitive buttons: 0...32767.
2176 \begin_layout Itemize
2177 For hats: Bitmask: 1=>Up, 2=>Right, 4=>Down, 8=>Left.
2180 \begin_layout Itemize
2181 For mouse: Coordinates relative to game area.
2185 \begin_layout Itemize
2186 ktype: Type of key (disabled, key, mouse, axis, hat, pressure).
2189 \begin_layout Subsection
2190 input.keyhook: Hook a key
2193 \begin_layout Itemize
2194 Syntax: none input.keyhook(string key, boolean state)
2197 \begin_layout Standard
2198 Requests that keyhook events to be sent for key <key> (<state>=true) or
2199 not sent (<state>=false).
2202 \begin_layout Subsection
2203 input.joyget: Get controls for controller
2206 \begin_layout Itemize
2207 Syntax: table input.joyget(number logical)
2210 \begin_layout Standard
2211 Returns table for current controls for specified logical controller <logical>.
2212 The names of fields vary by controller type.
2215 \begin_layout Itemize
2216 The buttons have the same name as those are referred to in other contexts
2220 \begin_layout Itemize
2221 The analog axes are usually
2222 \begin_inset Quotes eld
2226 \begin_inset Quotes erd
2230 \begin_inset Quotes eld
2234 \begin_inset Quotes erd
2240 \begin_layout Itemize
2241 Each field is numeric or boolean depending on axis/button.
2244 \begin_layout Subsection
2245 input.joyset: Set controls for controller
2248 \begin_layout Itemize
2249 Syntax: none input.joyset(number controller, table controls)
2252 \begin_layout Standard
2253 Set the the state of specified controller to values specified in specified
2257 \begin_layout Itemize
2258 Each field can be boolean or number.
2261 \begin_layout Itemize
2262 Also, buttons allow strings, which cause value to be inverted.
2265 \begin_layout Subsection
2266 input.lcid_to_pcid: Look up logical controller (deprecated)
2269 \begin_layout Itemize
2270 Syntax: (number, number, number) input.lcid_to_pcid(number lcid)
2273 \begin_layout Standard
2274 Returns the legacy pcid for controller (or false if there isn't one), followed
2276 Returns nothing if controller does not exist.
2279 \begin_layout Standard
2280 \begin_inset Newpage pagebreak
2286 \begin_layout Section
2290 \begin_layout Standard
2291 Various keybinding-related functions
2294 \begin_layout Subsection
2295 keyboard.bind: Bind a key
2298 \begin_layout Itemize
2299 Syntax: none keyboard.bind(string mod, string mask, string key, string cmd)
2302 \begin_layout Standard
2303 Bind specified key with specified modifers to specified command.
2306 \begin_layout Subsection
2307 keyboard.unbind: Unbind a key
2310 \begin_layout Itemize
2311 Syntax: none keyboard.unbind(string mod, string mask, string key)
2314 \begin_layout Standard
2315 Unbind specified key with specified modifers.
2318 \begin_layout Subsection
2319 keyboard.alias: Set alias expansion
2322 \begin_layout Itemize
2323 Syntax: none keyboard.alias(string alias, string expansion)
2326 \begin_layout Standard
2327 Set expansion of given command.
2330 \begin_layout Standard
2331 \begin_inset Newpage pagebreak
2337 \begin_layout Section
2341 \begin_layout Standard
2345 \begin_layout Subsection
2346 subtitle.byindex: Look up start and length of subtitle by index
2349 \begin_layout Itemize
2350 Syntax: (number, number) subtitle.byindex(number i)
2353 \begin_layout Standard
2354 Read the frame and length of ith subtitle.
2355 Returns nothing if not present.
2358 \begin_layout Subsection
2359 subtitle.set: Write a subtitle
2362 \begin_layout Itemize
2363 Syntax: none subtitle.set(number f, number l, string txt)
2366 \begin_layout Standard
2367 Set the text of subtitle.
2370 \begin_layout Subsection
2371 subtitle.get: Read a subtitle
2374 \begin_layout Itemize
2375 Syntax: string subtitle.get(number f, number l)
2378 \begin_layout Standard
2379 Get the text of subtitle.
2382 \begin_layout Subsection
2383 subtitle.delete: Delete a subtitle
2386 \begin_layout Itemize
2387 Syntax: nonesubtitle.delete(number f, number l)
2390 \begin_layout Standard
2391 Delete specified subtitle.
2394 \begin_layout Standard
2395 \begin_inset Newpage pagebreak
2401 \begin_layout Section
2405 \begin_layout Standard
2406 Host memory handling (extra memory saved to savestates).
2407 Host memory starts empty.
2410 \begin_layout Itemize
2411 Reads out of range return false.
2414 \begin_layout Itemize
2415 Writes out of range extend the memory.
2418 \begin_layout Subsection
2419 hostmemory.read: Read byte from host memory
2422 \begin_layout Itemize
2423 Syntax: number hostmemory.read(number address)
2426 \begin_layout Standard
2427 Reads byte from hostmemory slot address <address>.
2430 \begin_layout Subsection
2431 hostmemory.write: Write byte to host memory
2434 \begin_layout Itemize
2435 Syntax: none hostmemory.write(number address, number value)
2438 \begin_layout Standard
2439 Writes hostmemory slot with value <value> 0-255.
2442 \begin_layout Subsection
2443 hostmemory.read{,s}{byte,{,h,d,q}word}: Read from host memory
2446 \begin_layout Itemize
2447 Syntax: number hostmemory.readbyte(number address)
2450 \begin_layout Itemize
2451 Syntax: number hostmemory.readsbyte(number address)
2454 \begin_layout Itemize
2455 Syntax: number hostmemory.readword(number address)
2458 \begin_layout Itemize
2459 Syntax: number hostmemory.readsword(number address)
2462 \begin_layout Itemize
2463 Syntax: number hostmemory.readhword(number address)
2466 \begin_layout Itemize
2467 Syntax: number hostmemory.readshword(number address)
2470 \begin_layout Itemize
2471 Syntax: number hostmemory.readdword(number address)
2474 \begin_layout Itemize
2475 Syntax: number hostmemory.readsdword(number address)
2478 \begin_layout Itemize
2479 Syntax: number hostmemory.readqword(number address)
2482 \begin_layout Itemize
2483 Syntax: number hostmemory.readsqword(number address)
2486 \begin_layout Standard
2487 Read elements (big-endian) from given address <address>.
2490 \begin_layout Itemize
2494 \begin_layout Itemize
2498 \begin_layout Itemize
2502 \begin_layout Itemize
2506 \begin_layout Itemize
2507 qword is 8 elements.
2510 \begin_layout Itemize
2511 The 's' variants do signed read.
2514 \begin_layout Subsection
2515 hostmemory.read{float,double}: Read from host memory
2518 \begin_layout Itemize
2519 syntax: number hostmemory.readfloat(number address)
2522 \begin_layout Itemize
2523 Syntax: number hostmemory.readdouble(number address)
2526 \begin_layout Standard
2527 Read elements (big-endian) floating-pont from given address <address>.
2530 \begin_layout Subsection
2531 hostmemory.write{,s}{byte,{,h,d,q}word}: Write to host memory
2534 \begin_layout Itemize
2535 Syntax: number hostmemory.writebyte(number address, number value)
2538 \begin_layout Itemize
2539 Syntax: number hostmemory.writesbyte(number address, number value)
2542 \begin_layout Itemize
2543 Syntax: number hostmemory.writeword(number address, number value)
2546 \begin_layout Itemize
2547 Syntax: number hostmemory.writesword(number address, number value)
2550 \begin_layout Itemize
2551 Syntax: number hostmemory.writehword(number address, number value)
2554 \begin_layout Itemize
2555 Syntax: number hostmemory.writeshword(number address, number value)
2558 \begin_layout Itemize
2559 Syntax: number hostmemory.writedword(number address, number value)
2562 \begin_layout Itemize
2563 Syntax: number hostmemory.writesdword(number address, number value)
2566 \begin_layout Itemize
2567 Syntax: number hostmemory.writeqword(number address, number value)
2570 \begin_layout Itemize
2571 Syntax: number hostmemory.writesqword(number address, number value)
2574 \begin_layout Standard
2575 Write value <value> to elements (little-endian) starting from given address
2579 \begin_layout Itemize
2583 \begin_layout Itemize
2587 \begin_layout Itemize
2591 \begin_layout Itemize
2595 \begin_layout Itemize
2596 qword is 8 elements.
2599 \begin_layout Itemize
2600 The 's' variants do signed write.
2603 \begin_layout Subsection
2604 hostmemory.write{float,double}: Write to host memory
2607 \begin_layout Itemize
2608 syntax: none hostmemory.readfloat(number address, number value)
2611 \begin_layout Itemize
2612 Syntax: none hostmemory.readdouble(number address, number value)
2615 \begin_layout Standard
2616 Write elements (big-endian) floating-pont to given address <address>, storing
2620 \begin_layout Standard
2621 \begin_inset Newpage pagebreak
2627 \begin_layout Section
2631 \begin_layout Standard
2635 \begin_layout Subsection
2636 movie.currentframe: Get current frame number
2639 \begin_layout Itemize
2640 Syntax: number movie.currentframe()
2643 \begin_layout Standard
2644 Return number of current frame.
2647 \begin_layout Subsection
2648 movie.framecount: Get move frame count
2651 \begin_layout Itemize
2652 Syntax: number movie.framecount()
2655 \begin_layout Standard
2656 Return number of frames in movie.
2659 \begin_layout Subsection
2660 movie.readonly: Is in readonly mode?
2663 \begin_layout Itemize
2664 Syntax: boolean movie.readonly()
2667 \begin_layout Standard
2668 Return true if in readonly mode, false if in readwrite.
2671 \begin_layout Subsection
2672 movie.rerecords: Movie rerecord count
2675 \begin_layout Itemize
2676 Syntax: number movie.rerecords()
2679 \begin_layout Standard
2680 Returns the current value of rerecord count.
2683 \begin_layout Subsection
2684 movie.set_readwrite: Set read-write mode.
2687 \begin_layout Itemize
2688 Syntax: none movie.set_readwrite()
2691 \begin_layout Standard
2692 Set readwrite mode (does not cause on_readwrite callback).
2695 \begin_layout Subsection
2696 movie.frame_subframes: Count subframes in frame
2699 \begin_layout Itemize
2700 Syntax: number movie.frame_subframes(number frame)
2703 \begin_layout Standard
2704 Count number of subframes in specified frame <frame> (frame numbers are
2705 1-based) and return that.
2708 \begin_layout Subsection
2709 movie.read_subframes: Read subframe data (deprecated)
2712 \begin_layout Itemize
2713 Syntax: table movie.read_subframes(number frame, number subframe)
2716 \begin_layout Standard
2717 Read specifed subframe in specified frame and return data as array.
2720 \begin_layout Subsection
2721 movie.read_rtc: Read current RTC time
2724 \begin_layout Itemize
2725 Syntax: (number, number) movie.read_rtc()
2728 \begin_layout Standard
2729 Returns the current value of the RTC as a pair (second, subsecond).
2732 \begin_layout Subsection
2733 movie.unsafe_rewind: Fast movie rewind to saved state
2736 \begin_layout Itemize
2737 Syntax: none movie.unsafe_rewind([UNSAFEREWIND state])
2740 \begin_layout Standard
2741 Start setting point for unsafe rewind or jump to point of unsafe rewind.
2744 \begin_layout Itemize
2745 If called without argument, causes emulator to start process of setting
2746 unsafe rewind point.
2747 When this has finished, callback on_set_rewind occurs, passing the rewind
2748 state to lua script.
2751 \begin_layout Itemize
2752 If called with argument, causes emulator rewind to passed rewind point as
2754 Readwrite mode is implicitly activated.
2757 \begin_layout Standard
2758 The following warnings apply to unsafe rewinding:
2761 \begin_layout Itemize
2762 There are no safety checks against misuse (that's what
2763 \begin_inset Quotes eld
2767 \begin_inset Quotes erd
2773 \begin_layout Itemize
2774 Only call rewind from timeline rewind point was set from.
2777 \begin_layout Itemize
2778 Only call rewind from after the rewind point was set.
2781 \begin_layout Subsection
2782 movie.to_rewind: Load savestate as rewind point
2785 \begin_layout Itemize
2786 Syntax: UNSAFEREWIND movie.to_rewind(string filename)
2789 \begin_layout Standard
2790 Load specified savestate file <filename> as rewind point and return UNSAFEREWIND
2791 corresponding to it.
2794 \begin_layout Itemize
2795 Note: This operation does not take emulated time.
2798 \begin_layout Subsection
2799 movie.copy_movie/INPUTMOVIE::copy_movie: Copy movie to movie object
2802 \begin_layout Itemize
2803 Syntax: INPUTMOVIE movie.copy_movie([INPUTMOVIE movie])
2806 \begin_layout Itemize
2807 Syntax: INPUTMOVIE INPUTMOVIE::copy_movie()
2810 \begin_layout Standard
2811 Copies specified movie <movie>/current object (if none or nil, the active
2812 movie) as new movie object.
2815 \begin_layout Subsection
2816 movie.get_frame/INPUTMOVIE::get_frame: Read specified frame in movie.
2819 \begin_layout Itemize
2820 Syntax: INPUTFRAME movie.get_frame([INPUTMOVIE movie,] number frame)
2823 \begin_layout Itemize
2824 Syntax: INPUTFRAME INPUTMOVIE::get_frame(number frame);
2827 \begin_layout Standard
2828 Get INPUTFRAME object corresponding to specified frame in specified movie.
2831 \begin_layout Subsection
2832 movie.set_frame/INPUTMOVIE::set_frame: Write speicifed frame in movie.
2835 \begin_layout Itemize
2836 Syntax: none movie.set_frame([INPUTMOVIE movie,] number frame, INPUTFRAME
2840 \begin_layout Itemize
2841 Syntax: none INPUTMOVIE::set_frame(number frame, INPUTFRAME data)
2844 \begin_layout Standard
2845 Set data in specified frame.
2848 \begin_layout Itemize
2849 Note: Past can't be edited in active movie.
2852 \begin_layout Subsection
2853 movie.get_size/INPUTMOVIE::get_size: Get size of movie
2856 \begin_layout Itemize
2857 Syntax: integer movie.get_size([INPUTMOVIE movie])
2860 \begin_layout Itemize
2861 Syntax: integer INPUTMOVIE::get_size()
2864 \begin_layout Standard
2865 Return number of subframes in specified movie.
2868 \begin_layout Subsection
2869 movie.count_frames/INPUTMOVIE::count_frames: Count frames in movie
2872 \begin_layout Itemize
2873 Syntax: number movie.count_frames([INPUTMOVIE movie])
2876 \begin_layout Itemize
2877 Syntax: number INPUTMOVIE::count_frames()
2880 \begin_layout Standard
2881 Return number of frames in movie.
2884 \begin_layout Subsection
2885 movie.find_frame/INPUTMOVIE::find_frame: Find subframe corresponding to frame
2888 \begin_layout Itemize
2889 Syntax: number movie.find_frame([INPUTMOVIE movie], number frame)
2892 \begin_layout Itemize
2893 Syntax: number INPUTMOVIE::find_frame(number frame)
2896 \begin_layout Standard
2897 Returns starting subframe of given frame (frame numbers are 1-based).
2898 Returns -1 if frame number is bad.
2901 \begin_layout Subsection
2902 movie.blank_frame/INPUTMOVIE::blank_frame: Return a blank frame
2905 \begin_layout Itemize
2906 Syntax: INPUTFRAME movie.blank_frame([INPUTMOVIE movie])
2909 \begin_layout Itemize
2910 Syntax: INPUTFRAME INPUTMOVIE::blank_frame()
2913 \begin_layout Standard
2914 Return blank INPUTFRAME with frame type from specified movie.
2917 \begin_layout Subsection
2918 movie.append_frames/INPUTMOVIE::append_frames: Append blank frames
2921 \begin_layout Itemize
2922 Syntax: none movie.append_frames([INPUTMOVIE movie,] number frames)
2925 \begin_layout Itemize
2926 Syntax: none INPUTMOVIE::append_frames(number frames)
2929 \begin_layout Standard
2930 Append specified number <frames> of frames.
2933 \begin_layout Subsection
2934 movie.append_frame/INPUTMOVIE::append_frame: Append a frame
2937 \begin_layout Itemize
2938 Syntax: none movie.append_frame([INPUTMOVIE movie,] INPUTFRAME frame)
2941 \begin_layout Itemize
2942 Syntax: none INPUTMOVIE::append_frame(INPUTFRAME frame)
2945 \begin_layout Standard
2946 Append specified frame <frame>.
2947 Past of current movie can't be edited.
2950 \begin_layout Subsection
2951 movie.truncate/INPUTMOVIE::truncate: Truncate a movie.
2954 \begin_layout Itemize
2955 Syntax: none movie.truncate([INPUTMOVIE movie,] number frames)
2958 \begin_layout Itemize
2959 Syntax: none INPUTMOVIE::truncate(number frames)
2962 \begin_layout Standard
2963 Truncate the specified movie to specified number of frames.
2966 \begin_layout Subsection
2967 movie.edit/INPUTMOVIE::edit: Edit a movie
2970 \begin_layout Itemize
2971 Syntax: none movie.edit([INPUTMOVIE movie,] number frame, number port, number
2972 controller, number control, number/bool value)
2975 \begin_layout Itemize
2976 Syntax: none INPUTMOVIE::edit(number frame, number port, number controller,
2977 number control, number/bool value)
2980 \begin_layout Standard
2981 Change specified control in specified frame in specified movie.
2982 Past can't be edited in active movie.
2985 \begin_layout Subsection
2986 movie.copy_frames2: Copy frames between movies
2989 \begin_layout Itemize
2990 Syntax: none movie.copy_frames2([INPUTMOVIE dstmov,] number dst, [INPUTMOVIE
2991 srcmov,] number src, number count)
2994 \begin_layout Standard
2995 Copy specified number of frames between two movies.
2996 The copy proceeeds in forward direction.
2999 \begin_layout Subsection
3000 movie.copy_frames/INPUTMOVIE::copy_frames: Copy frames in movie
3003 \begin_layout Itemize
3004 Syntax: none movie.copy_frames([INPUTMOVIE mov,] number dst, number src,
3005 number count, bool backwards)
3008 \begin_layout Itemize
3009 Syntax: none INPUTMOVIE::copy_frames(number dst, number src, number count,
3013 \begin_layout Standard
3014 Copy specified number of frames from one point in movie to another.
3015 If backwards is true, the copy will be done backwards.
3018 \begin_layout Subsection
3019 movie.serialize/INPUTMOVIE::serialize: Serialize movie
3022 \begin_layout Itemize
3023 Syntax: none movie.serialize([INPUTMOVIE movie,] string filename, bool binary)
3026 \begin_layout Itemize
3027 Syntax: none INPUTMOIVE::serialize(string filename, bool binary)
3030 \begin_layout Standard
3031 Serialize given movie into file.
3032 If binary is true, binary format (more compact and much faster) is used.
3035 \begin_layout Subsection
3036 movie.unserialize: Unserialize movie
3039 \begin_layout Itemize
3040 Syntax: INPUTMOVIE movie.unserialize(INPUTFRAME template, string filename,
3044 \begin_layout Standard
3045 Unserialize movie from file.
3046 The given frame is used as template to decide the frame type.
3047 If binary is true, binary format is decoded (much faster).
3050 \begin_layout Subsection
3051 movie.current_first_subframe: Return first subframe in current frame
3054 \begin_layout Itemize
3055 Syntax: number movie.current_first_subframe()
3058 \begin_layout Standard
3059 Returns first subframe in current frame.
3062 \begin_layout Subsection
3063 movie.pollcounter: Return poll counter for speified control
3066 \begin_layout Itemize
3067 Syntax: number movie.pollcounter(number port, number controller, number control)
3070 \begin_layout Standard
3071 Returns number of times the specified control has been polled this frame.
3074 \begin_layout Subsection
3075 INPUTFRAME::get_button: Get button
3078 \begin_layout Itemize
3079 Syntax: boolean INPUTFRAME::get_button(number port, number controller, number
3083 \begin_layout Standard
3084 Returns state of given button as boolean.
3087 \begin_layout Subsection
3088 INPUTFRAME::get_axis: Get axis
3091 \begin_layout Itemize
3092 Syntax: number INPUTFRAME::get_axis(number port, number controller, number
3096 \begin_layout Standard
3097 Returns state of given axis as number.
3100 \begin_layout Subsection
3101 INPUTFRAME::set_button/INPUTFRAME::set_axis: Set button or axis
3104 \begin_layout Itemize
3105 Syntax: none INPUTFRAME::set_button(number port, number controller, number
3106 control, number/bool value)
3109 \begin_layout Itemize
3110 Syntax: none INPUTFRAME::set_axis(number port, number controller, number
3114 \begin_layout Standard
3115 Set the given button/axis to given value.
3118 \begin_layout Subsection
3119 INPUTFRAME::serialize: Serialize a frame
3122 \begin_layout Itemize
3123 Syntax: string INPUTFRAME::serialize()
3126 \begin_layout Standard
3127 Return string representation of frame.
3130 \begin_layout Subsection
3131 INPUTFRAME::unserialize: Unserialize a frame
3134 \begin_layout Itemize
3135 Syntax: none INPUTFRAME::unserialize(string data)
3138 \begin_layout Standard
3139 Set current frame from given data.
3142 \begin_layout Subsection
3143 INPUTFRAME::get_stride: Get movie stride
3146 \begin_layout Itemize
3147 Syntax: number INPUTFRAME::get_stride()
3150 \begin_layout Standard
3151 Return number of bytes needed to store the input frame.
3152 Mainly useful for some debugging.
3155 \begin_layout Standard
3156 \begin_inset Newpage pagebreak
3162 \begin_layout Section
3166 \begin_layout Standard
3167 Routines for settings manipulation
3170 \begin_layout Subsection
3171 settings.get: Get value of setting
3174 \begin_layout Itemize
3175 Syntax: string settings.get(string name)
3178 \begin_layout Standard
3179 Get value of setting <name>.
3180 If setting value can't be obtained, returns (nil, error message).
3183 \begin_layout Subsection
3184 settings.set: Set value of setting
3187 \begin_layout Itemize
3188 Syntax: none settings.set(string name, string value)
3191 \begin_layout Standard
3192 Set value <value> of setting <name>.
3193 If setting can't be set, returns (nil, error message).
3196 \begin_layout Standard
3197 \begin_inset Newpage pagebreak
3203 \begin_layout Section
3207 \begin_layout Standard
3208 Contains various functions for managing memory
3211 \begin_layout Subsection
3212 memory.vma_count: Count number of VMAs.
3215 \begin_layout Itemize
3216 Syntax: number memory.vma_count()
3219 \begin_layout Standard
3220 Returns the number of VMAs
3223 \begin_layout Subsection
3224 memory.read_vma: Lookup VMA info by index
3227 \begin_layout Itemize
3228 Syntax: string memory.read_vma(number index)
3231 \begin_layout Standard
3232 Reads the specified VMA (indices start from zero).
3233 Trying to read invalid VMA gives nil.
3234 The read VMA is table with the following fields:
3237 \begin_layout Itemize
3238 region_name (string): The readable name of the VMA
3241 \begin_layout Itemize
3242 baseaddr (number): Base address of the VMA
3245 \begin_layout Itemize
3246 lastaddr (number): Last address in the VMA.
3249 \begin_layout Itemize
3250 size (number): The size of VMA in bytes.
3253 \begin_layout Itemize
3254 readonly (boolean): True of the VMA corresponds to ROM.
3257 \begin_layout Itemize
3258 iospace (boolean): True if the VMA is I/O space.
3261 \begin_layout Itemize
3262 native_endian (boolean): True if the VMA has native endian as opposed to
3266 \begin_layout Subsection
3267 memory.find_vma: Find VMA info by address
3270 \begin_layout Itemize
3271 Syntax: table memory.find_vma(number address)
3274 \begin_layout Standard
3275 Finds the VMA containing specified address.
3276 Returns table in the same format as read_vma or nil if not found.
3279 \begin_layout Subsection
3280 memory.read{,s}{byte,{,h,d,q}word}: Read memory
3283 \begin_layout Itemize
3284 Syntax: none memory.readbyte([string vma, ]number address)
3287 \begin_layout Itemize
3288 Syntax: none memory.readword([string vma, ]number address)
3291 \begin_layout Itemize
3292 Syntax: none memory.readhword([string vma, ]number address)
3295 \begin_layout Itemize
3296 Syntax: none memory.readdword([string vma, ]number address)
3299 \begin_layout Itemize
3300 Syntax: none memory.readqword([string vma, ]number address)
3303 \begin_layout Itemize
3304 Syntax: none memory.readsbyte([string vma, ]number address)
3307 \begin_layout Itemize
3308 Syntax: none memory.readsword([string vma, ]number address)
3311 \begin_layout Itemize
3312 Syntax: none memory.readshword([string vma, ]number address)
3315 \begin_layout Itemize
3316 Syntax: none memory.readsdword([string vma, ]number address)
3319 \begin_layout Itemize
3320 Syntax: none memory.readsqword([string vma, ]number address)
3323 \begin_layout Standard
3324 Reads the specified address <address> (if 's' variant is used, do undergo
3328 \begin_layout Subsection
3329 memory.{,s}read_sg: Scatter/Gather read memory
3332 \begin_layout Itemize
3333 Syntax: none memory.read_sg(string/boolean/number...)
3336 \begin_layout Itemize
3337 Syntax: none memory.sread_sg(string/boolean/number...)
3340 \begin_layout Standard
3341 Perform (2s complement signed if using memory.sread_sg) scatter/gather read
3343 Each argument can be string, boolean or number:
3346 \begin_layout Itemize
3347 String: Set VMA addresses are relative to (e.g.
3351 \begin_layout Itemize
3352 boolean: If true, increment relative address by 1, if false, decrement by
3354 The new address is read as next higher byte.
3357 \begin_layout Itemize
3358 integer: Set the relative address to specified value and read the address
3359 as next higher byte.
3362 \begin_layout Subsection
3363 memory.write_sg: Scatter/Gather write memory
3366 \begin_layout Itemize
3367 Syntax: none memory.write_sg(number value, string/boolean/number...)
3370 \begin_layout Standard
3371 Perform scatter/gather write of value <value> on memory.
3372 Each argument can be string, boolean or number:
3375 \begin_layout Itemize
3376 String: Set VMA addresses are relative to (e.g.
3380 \begin_layout Itemize
3381 boolean: If true, increment relative address by 1, if false, decrement by
3383 The new address is read as next higher byte.
3386 \begin_layout Itemize
3387 integer: Set the relative address to specified value and read the address
3388 as next higher byte.
3391 \begin_layout Subsection
3392 memory.read{float,double}: Read memory
3395 \begin_layout Itemize
3396 Syntax: none memory.readfloat([string vma, ]number address)
3399 \begin_layout Itemize
3400 Syntax: none memory.readdouble([string vma, ]number address)
3403 \begin_layout Standard
3404 Reads the specified address <address>
3407 \begin_layout Subsection
3408 memory.write{byte,{,h,d,q}word,float,double}: Write memory
3411 \begin_layout Itemize
3412 Syntax: none memory.writebyte([string vma, ]number address, number value)
3415 \begin_layout Itemize
3416 Syntax: none memory.writeword([string vma, ]number address, number value)
3419 \begin_layout Itemize
3420 Syntax: none memory.writehword([string vma, ]number address, number value)
3423 \begin_layout Itemize
3424 Syntax: none memory.writedword([string vma, ]number address, number value)
3427 \begin_layout Itemize
3428 Syntax: none memory.writeqword([string vma, ]number address, number value)
3431 \begin_layout Itemize
3432 Syntax: none memory.writefloat([string vma, ]number address, number value)
3435 \begin_layout Itemize
3436 Syntax: none memory.writedouble([string vma, ]number address, number value)
3439 \begin_layout Standard
3440 Writes the specified value <value> (negative integer values undergo 2's
3441 complement) to specified address <address>.
3444 \begin_layout Subsection
3445 memory.map{{,s}{byte,{,h,d,q}word},float,double}: Map an array
3448 \begin_layout Itemize
3449 Syntax: userdata memory.map<type>([[string vma, ]number base, number size])
3452 \begin_layout Standard
3453 Returns a table mapping specified memory aperture for read/write.
3454 If parameters are omitted, entiere map space is the aperture.
3457 \begin_layout Itemize
3458 Type may be one of: byte, sbyte, word, sword, hword, shword, dword, sdword,
3459 qword, sqword, float or double.
3462 \begin_layout Subsection
3463 memory.hash_region: Hash region of memory
3466 \begin_layout Itemize
3467 Syntax: string memory.hash_region([string vma, ]number base, number size)
3470 \begin_layout Standard
3471 Hash specified number of bytes starting from specified address and return
3475 \begin_layout Subsection
3476 memory.hash_state: Hash system state
3479 \begin_layout Itemize
3480 Syntax: string memory.hash_state()
3483 \begin_layout Standard
3484 Hash the current system state.
3485 Mainly useful for debugging savestates.
3488 \begin_layout Subsection
3489 memory.readregion: Read region of memory
3492 \begin_layout Itemize
3493 Syntax: table memory.readregion([string vma, ]number base, number size)
3496 \begin_layout Standard
3497 Read a region of memory.
3500 \begin_layout Itemize
3501 Warning: If the region crosses VMA boundary, the results are undefined.
3504 \begin_layout Subsection
3505 memory.writeregion: Write region of memory
3508 \begin_layout Itemize
3509 Syntax: none memory.writeregion([string vma, ]number base, number size, table
3513 \begin_layout Standard
3514 Write a region of memory.
3517 \begin_layout Itemize
3518 Warning: If the region crosses VMA boundary, the results are undefined.
3521 \begin_layout Subsection
3522 memory.map_structure: Create mmap structure
3525 \begin_layout Itemize
3526 syntax: MMAP_STRUCT memory.map_structure()
3529 \begin_layout Standard
3530 Returns a new mapping structure (MMAP_STRUCT)
3533 \begin_layout Subsection
3534 MMAP_STRUCT(): Bind key in mmap structure
3537 \begin_layout Itemize
3538 Syntax: none MMAP_STRUCT(string key, [string vma, ]number address, string
3542 \begin_layout Standard
3543 Bind key <key> in mmap structure to specified address <address> with specified
3547 \begin_layout Itemize
3548 Type may be one of: byte, sbyte, word, sword, hword, shword, dword, sdword,
3549 qword, sqword, float or double.
3552 \begin_layout Subsection
3553 memory.read_expr: Evaluate memory watch expression
3556 \begin_layout Itemize
3557 Syntax: string memory.read_expr(string expr)
3560 \begin_layout Standard
3561 Evaluate specified watch expression and return result
3564 \begin_layout Subsection
3565 memory.action: Run core action
3568 \begin_layout Itemize
3569 memory.action(string action, [<params>])
3572 \begin_layout Standard
3574 The different models expect parameters as:
3577 \begin_layout Itemize
3581 \begin_layout Itemize
3585 \begin_layout Itemize
3589 \begin_layout Itemize
3593 \begin_layout Itemize
3597 \begin_layout Subsection
3598 memory.get_lag_flag: Get lag flag
3601 \begin_layout Itemize
3602 Syntax: boolean memory.get_lag_flag()
3605 \begin_layout Standard
3606 Get the value of core lag flag.
3607 True if this frame has been lag so far, false if poll has been detected.
3610 \begin_layout Subsection
3611 memory.set_lag_flag: Set lag flag
3614 \begin_layout Itemize
3615 Syntax: none memory.set_lag_flag(boolean flag)
3618 \begin_layout Standard
3619 Set the value of core lag flag.
3620 This flag automatically gets cleared if poll is detected, but can be forcibly
3621 set or cleared if game so requires.
3624 \begin_layout Itemize
3625 Should only be used in on_frame_emulated callback.
3628 \begin_layout Itemize
3629 Setting or clearing this affects the emulator lag counter.
3632 \begin_layout Standard
3633 \begin_inset Newpage pagebreak
3639 \begin_layout Section
3643 \begin_layout Standard
3644 Contains newer memory functions.
3647 \begin_layout Subsection
3648 memory2(): Get all VMA names.
3651 \begin_layout Itemize
3652 Syntax: table memory2()
3655 \begin_layout Standard
3656 Returns array of all valid VMA names.
3659 \begin_layout Subsection
3660 memory2.<vma>:info: Get VMA info
3663 \begin_layout Itemize
3664 Syntax: table memory2.<vma>:info()
3667 \begin_layout Standard
3668 Return table describing given VMA.
3669 Includes fields address, size, last, readonly, special and endian.
3672 \begin_layout Subsection
3673 memory2.<vma>:<op>: Read/Write memory
3676 \begin_layout Itemize
3677 Syntax: none memory2.<vma>:<op>(number offset, number value)
3680 \begin_layout Itemize
3681 Syntax: number memory2.<vma>:<op>(number offset)
3684 \begin_layout Standard
3685 Read/Write value from/to given VMA <vma> at given offset <offset> (must
3687 The value written is <value>.
3688 <Op> is of form: [i][s]<type>, where:
3691 \begin_layout Itemize
3692 <type> is one of 'byte', 'word', 'hword', 'dword', 'qword', 'float', 'double'.
3695 \begin_layout Itemize
3696 'i' signifies that the value is treated as opposite-to-normal endianess,
3699 \begin_layout Itemize
3700 's' signifies that value is treated as signed (not available for floating-point).
3703 \begin_layout Subsection
3704 memory2.<vma>:read: Scatter-gather value read
3707 \begin_layout Itemize
3708 Syntax: number memory2.<vma>:read(number addr...)
3711 \begin_layout Standard
3712 Read value from given VMA <vma> at byte offsets <addr>..., given in order of
3713 increasing significance.
3714 Value of true and false are special.
3715 True increments address by 1, and false decrements address by 1.
3718 \begin_layout Subsection
3719 memory2.<vma>:sread: Signed scatter-gather value read
3722 \begin_layout Itemize
3723 Syntax: number memory2.<vma>:sread(number addr...)
3726 \begin_layout Standard
3727 Like memory2.<vma>:read, but reads signed values.
3730 \begin_layout Subsection
3731 memory2.<vma>:write: Scatter-gather value write
3734 \begin_layout Itemize
3735 Syntax: number memory2.<vma>:write(number val, number addr...)
3738 \begin_layout Standard
3739 Write value <val> to given VMA <vma> at byte offsets <addr>..., given in order
3740 of increasing significance.
3741 Value of true and false are special.
3742 True increments address by 1, and false decrements address by 1.
3745 \begin_layout Standard
3746 \begin_inset Newpage pagebreak
3752 \begin_layout Section
3756 \begin_layout Standard
3757 Various callback-related functions.
3760 \begin_layout Subsection
3761 \begin_inset CommandInset label
3763 name "sub:callback.register:-Register-a"
3767 callback.register: Register a callback
3770 \begin_layout Itemize
3771 Syntax: function callback.register(string cbname, function cbfun);
3774 \begin_layout Standard
3775 Instruct function <cbfun> to be added to list of callbacks to call on event
3776 <cbname> (See section
3777 \begin_inset CommandInset ref
3779 reference "sec:Callbacks"
3784 The callback name does not have the 'on_' prefix (e.g.
3786 \begin_inset Quotes eld
3790 \begin_inset Quotes erd
3797 \begin_layout Subsection
3798 \begin_inset CommandInset label
3800 name "sub:callback.unregister:-Unregister-"
3804 callback.unregister: Unregister a callback
3807 \begin_layout Itemize
3808 Syntax: function callback.unregister(string cbname, function cbfun);
3811 \begin_layout Standard
3812 Instruct function <cbfun> to be removed from list of callbacks to call on
3816 \begin_layout Subsection
3817 callback.<cbname>:register: Register callback
3820 \begin_layout Itemize
3821 Syntax: function callback.<cbname>:register(function cbfun)
3824 \begin_layout Standard
3825 Synonym for callback.register (section
3826 \begin_inset CommandInset ref
3828 reference "sub:callback.register:-Register-a"
3832 ), albeit with callback name specified differently.
3835 \begin_layout Subsection
3836 callback.<cbname>:unregister: Register callback
3839 \begin_layout Itemize
3840 Syntax: function callback.<cbname>:unregister(function cbfun)
3843 \begin_layout Standard
3844 Synonym for callback.unregister (section
3845 \begin_inset CommandInset ref
3847 reference "sub:callback.unregister:-Unregister-"
3851 ), albeit with callback name specified differently.
3854 \begin_layout Section
3858 \begin_layout Standard
3859 Contains copy of global variables from time of Lua initialization.
3863 \begin_layout Standard
3864 \begin_inset Newpage pagebreak
3870 \begin_layout Section
3871 \begin_inset CommandInset label
3873 name "sec:Callbacks"
3880 \begin_layout Standard
3881 Various callbacks to Lua that can occur.
3884 \begin_layout Subsection
3885 on_paint: Screen is being painted
3888 \begin_layout Itemize
3889 Callback: on_paint(bool not_synth)
3892 \begin_layout Standard
3893 Called when screen is being painted.
3894 Any gui.* calls requiring graphic context draw on the screen.
3897 \begin_layout Itemize
3898 not_synth is true if this hook is being called in response to received frame,
3902 \begin_layout Subsection
3903 on_video: Dumped video frame is being painted
3906 \begin_layout Itemize
3907 Callback: on_video()
3910 \begin_layout Standard
3911 Called when video dump frame is being painted.
3912 Any gui.* calls requiring graphic context draw on the video.
3915 \begin_layout Subsection
3916 on_frame_emulated: Frame emulation complete
3919 \begin_layout Itemize
3920 Callback: on_frame_emulated()
3923 \begin_layout Standard
3924 Called when emulating frame has completed and on_paint()/on_video() calls
3925 are about to be issued.
3928 \begin_layout Subsection
3929 on_frame: Frame emulation starting.
3932 \begin_layout Itemize
3933 Callback: on_frame()
3936 \begin_layout Standard
3937 Called on each starting whole frame.
3940 \begin_layout Subsection
3941 on_startup: Emulator startup complete
3944 \begin_layout Itemize
3945 Callback: on_startup()
3948 \begin_layout Standard
3949 Called when the emulator is starting (lsnes.rc and --run files has been run).
3952 \begin_layout Subsection
3953 on_rewind: Movie rewound to beginning
3956 \begin_layout Itemize
3957 Callback: on_rewind()
3960 \begin_layout Standard
3961 Called when rewind movie to beginning has completed.
3964 \begin_layout Subsection
3965 on_pre_load: Load operation is about to start
3968 \begin_layout Itemize
3969 Callback: on_pre_load(string name)
3972 \begin_layout Standard
3973 Called just before savestate/movie load occurs (note: loads are always delayed,
3974 so this occurs even when load was initiated by lua).
3977 \begin_layout Subsection
3978 on_err_Load: Load failed
3981 \begin_layout Itemize
3982 Callback: on_err_load(string name)
3985 \begin_layout Standard
3986 Called if loadstate goes wrong.
3989 \begin_layout Subsection
3990 on_post_load: Load completed
3993 \begin_layout Itemize
3994 Callback: on_post_load(string name, boolean was_savestate)
3997 \begin_layout Standard
3998 Called on successful loadstate.
3999 was_savestate gives if this was a savestate or a movie.
4002 \begin_layout Subsection
4003 on_pre_save: Save operation is about to start
4006 \begin_layout Itemize
4007 Callback: on_pre_save(string name, boolean is_savestate)
4010 \begin_layout Standard
4011 Called just before savestate save occurs (note: movie saves are synchronous
4012 and won't trigger these callbacks if called from Lua).
4015 \begin_layout Subsection
4016 on_err_save: Save failed
4019 \begin_layout Itemize
4020 Callback: on_err_save(string name)
4023 \begin_layout Standard
4024 Called if savestate goes wrong.
4027 \begin_layout Subsection
4028 on_post_save: Save completed
4031 \begin_layout Itemize
4032 Callback: on_post_save(string name, boolean is_savestate)
4035 \begin_layout Standard
4036 Called on successful savaestate.
4037 is_savestate gives if this was a savestate or a movie.
4040 \begin_layout Subsection
4041 on_quit: Emulator is shutting down
4044 \begin_layout Itemize
4048 \begin_layout Standard
4049 Called when emulator is shutting down.
4052 \begin_layout Subsection
4053 on_input: Polling for input
4056 \begin_layout Standard
4057 Called when emulator is just sending input to bsnes core.
4058 Warning: This is called even in readonly mode, but the results are ignored.
4061 \begin_layout Subsection
4062 on_reset: System has been reset
4065 \begin_layout Itemize
4066 Callback: on_reset()
4069 \begin_layout Standard
4070 Called when system is reset.
4073 \begin_layout Subsection
4074 on_readwrite: Entered readwrite mode
4077 \begin_layout Itemize
4078 Callback: on_readwrite()
4081 \begin_layout Standard
4082 Called when moving into readwrite mode as result of
4083 \begin_inset Quotes eld
4087 \begin_inset Quotes erd
4090 command (note: moving to rwmode by Lua won't trigger this, as per recursive
4094 \begin_layout Subsection
4095 on_snoop/on_snoop2: Snoop core controller reads
4098 \begin_layout Itemize
4099 Callback: on_snoop(number port, number controller, number index, number
4103 \begin_layout Itemize
4104 Callback: on_snoop2(number port, number controller, number index, number
4108 \begin_layout Standard
4109 Called each time bsnes asks for input.
4110 The value is the final value to be sent to bsnes core (readonly mode, autohold
4111 and autofire have been taken into account).
4112 Might be useful when translating movies to format suitable for console
4114 Note: There is no way to modify the value to be sent.
4117 \begin_layout Itemize
4118 On_snoop2 is called instead of on_snoop if defined.
4119 Reserves port 0 for system, having first user port be port 1.
4122 \begin_layout Subsection
4123 on_keyhook: Hooked key/axis has been moved
4126 \begin_layout Itemize
4127 Callback: on_keyhook(string keyname, table state)
4130 \begin_layout Standard
4131 Sent when key that has keyhook events requested changes state.
4132 Keyname is name of the key (group) and state is the state (same kind as
4133 table values in input.raw).
4136 \begin_layout Subsection
4140 \begin_layout Itemize
4144 \begin_layout Standard
4145 Called when requested by set_idle_timeout(), the timeout has expired and
4146 emulator is waiting.
4149 \begin_layout Subsection
4150 on_timer: Timer event
4153 \begin_layout Itemize
4154 Callback: on_timer()
4157 \begin_layout Standard
4158 Called when requested by set_idle_timeout() and the timeout has expired
4159 (regardless if emulator is waiting).
4162 \begin_layout Subsection
4163 on_set_rewind: Rewind point has been set
4166 \begin_layout Itemize
4167 Callback: on_set_rewind(UNSAFEREWIND r)
4170 \begin_layout Standard
4171 Called when unsafe rewind object has been constructed.
4174 \begin_layout Subsection
4175 on_pre_rewind: Rewind is about to occur
4178 \begin_layout Itemize
4179 Callback: on_pre_rewind()
4182 \begin_layout Standard
4183 Called just before unsafe rewind is about to occur.
4186 \begin_layout Subsection
4187 on_post_rewind: Rewind has occured
4190 \begin_layout Itemize
4191 Callback: on_post_rewind()
4194 \begin_layout Standard
4195 Called just after unsafe rewind has occured.
4198 \begin_layout Subsection
4199 on_button: Button has been pressed
4202 \begin_layout Itemize
4203 Callback: on_button(number port, number controller, number index, string
4207 \begin_layout Standard
4208 Called on controller button press, with following parameters:
4211 \begin_layout Itemize
4212 port: Port number (0 is system)
4215 \begin_layout Itemize
4216 controller: Controller within port
4219 \begin_layout Itemize
4220 index: Index of button.
4223 \begin_layout Itemize
4224 type: Type of event, one of:
4228 \begin_layout Itemize
4229 \begin_inset Quotes eld
4233 \begin_inset Quotes erd
4236 : Button was pressed.
4239 \begin_layout Itemize
4240 \begin_inset Quotes eld
4244 \begin_inset Quotes erd
4247 : Button was released.
4250 \begin_layout Itemize
4251 \begin_inset Quotes eld
4255 \begin_inset Quotes erd
4261 \begin_layout Itemize
4262 \begin_inset Quotes eld
4266 \begin_inset Quotes erd
4269 : Released from hold.
4272 \begin_layout Itemize
4273 \begin_inset Quotes eld
4277 \begin_inset Quotes erd
4280 : Typing input on button.
4283 \begin_layout Itemize
4284 \begin_inset Quotes eld
4288 \begin_inset Quotes erd
4291 : Typing input undone.
4294 \begin_layout Itemize
4295 \begin_inset Quotes eld
4298 autofire <duty> <cycle>
4299 \begin_inset Quotes erd
4302 : Autofire with specifie duty and cycle.
4305 \begin_layout Itemize
4306 \begin_inset Quotes eld
4310 \begin_inset Quotes erd
4316 \begin_layout Itemize
4317 \begin_inset Quotes eld
4321 \begin_inset Quotes erd
4324 : Analog action on axis.
4328 \begin_layout Subsection
4329 on_movie_lost: Movie data is about to be lost
4332 \begin_layout Itemize
4333 Callback: on_movie_lost(STRING kind)
4336 \begin_layout Standard
4337 Called just before something would happen that could lose movie data.
4341 \begin_layout Itemize
4342 readwrite: Switching to readwrite mode.
4345 \begin_layout Itemize
4346 reload: ROM is being reloaded in readwrite mode.
4349 \begin_layout Itemize
4350 load: New movie is being loaded.
4353 \begin_layout Itemize
4354 unsaferewind: Unsafe rewind is happening.