graphics.c

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007, 2008, 2009 Thomas Perl <thp@thpinfo.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  20  * MA  02110-1301, USA.
  21  *
  22  **/
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <math.h>
  27 #include <unistd.h>
  28 #include <assert.h>
  29 #include <ctype.h>
  30 #include <string.h>
  31 #include <assert.h>
  32
  33 #include "tennix.h"
  34 #include "graphics.h"
  35 #include "archive.h"
  36 #include "sound.h"
  37
  38 #include "SDL_rotozoom.h"
  39
  40 static Image* images;
  41
  42 static Font* fonts;
  43 FreeList* font_freelist = NULL;
  44
  45 static FontDescription font_desc[] = {
  46     /**
  47      * This is the list of fonts to be loaded. Be sure to
  48      * use NULL as filename when using the same .ttf file
  49      * the second time in a row - this saves memory in the
  50      * loader function.
  51      **/
  52     { "dustismo.ttf", 13, TTF_STYLE_NORMAL },
  53     { NULL, 20, TTF_STYLE_NORMAL },
  54     { "itwasntme.ttf", 22, TTF_STYLE_NORMAL },
  55     { NULL, 28, TTF_STYLE_NORMAL }
  56 };
  57
  58 static SDL_Surface *buffer;
  59 static SDL_Surface *background;
  60
  61 static SDL_Rect *rect_update_cache;
  62 static SDL_Rect *rect_update_old;
  63 static int rect_update_cache_current;
  64 static int rect_update_old_count;
  65
  66 Uint32 fading_start = 0;
  67
  68 static const char* graphics[] = {
  69     "court.png",
  70     "shadow.png",
  71     "player-racket.png",
  72     "ball.png",
  73     "referee.png",
  74     "ctt_hard.png",
  75     "ctt_clay.png",
  76     "ctt_grass.png",
  77     "sidebar.png",
  78     "tennixlogo.png",
  79     "btnplay.png",
  80     "btnresume.png",
  81     "btnquit.png",
  82     "stadium.png",
  83     "fog.png",
  84     "fog2.png",
  85     "night.png",
  86     "talk.png",
  87     "cursor.png",
  88     "worldmap.png",
  89     "input_gamepad.png",
  90     "input_keyboard_arrows.png",
  91     "input_keyboard_ol.png",
  92     "input_keyboard_ws.png",
  93     "input_maemo_dpad.png",
  94     "input_mouse.png",
  95     "input_touchscreen.png",
  96     "input_ai.png",
  97     "loc_margaret_court_arena.png",
  98     "loc_stade_roland_garros.png",
  99     "loc_court_no_1.png",
 100     "loc_arthur_ashe_stadium.png",
 101 #ifdef NONFREE_LOCATIONS
 102     "loc_training_camp.png",
 103     "loc_austrian_open.png",
 104     "loc_olympic_green_tennis.png"
 105 #endif
 106 };
 107
 108 void init_graphics() {
 109     int i;
 110     char *d;
 111     SDL_Surface* data;
 112     SDL_Surface* tmp;
 113     TennixArchive *tnxar;
 114     struct SDL_RWops* rw;
 115     char *font_data = NULL;
 116
 117     if (TTF_Init() == -1) {
 118         fprintf(stderr, "Cannot init TTF: %s\n", TTF_GetError());
 119         exit(EXIT_FAILURE);
 120     }
 121
 122     rect_update_cache = (SDL_Rect*)calloc(RECT_UPDATE_CACHE, sizeof(SDL_Rect));
 123     rect_update_old = (SDL_Rect*)calloc(RECT_UPDATE_CACHE, sizeof(SDL_Rect));
 124     rect_update_cache_current = 0;
 125     rect_update_old_count = 0;
 126
 127     images = (Image*)calloc( GR_COUNT, sizeof( Image));
 128     fonts = (Font*)calloc(FONT_COUNT, sizeof(Font));
 129
 130     buffer = SDL_CreateRGBSurface(SDL_SWSURFACE, WIDTH, HEIGHT,
 131                  screen->format->BitsPerPixel,
 132                  screen->format->Rmask,
 133                  screen->format->Gmask,
 134                  screen->format->Bmask,
 135                  screen->format->Amask);
 136
 137     background = SDL_CreateRGBSurface(SDL_SWSURFACE, WIDTH, HEIGHT,
 138                      screen->format->BitsPerPixel,
 139                      screen->format->Rmask,
 140                      screen->format->Gmask,
 141                      screen->format->Bmask,
 142                      screen->format->Amask);
 143
 144     if( buffer == NULL) {
 145         fprintf( stderr, "Cannot create buffer surface: %s\n", SDL_GetError());
 146     }
 147
 148     tnxar = tnxar_open(ARCHIVE_FILE);
 149     if (tnxar == NULL) {
 150         /* not found in cwd - try installed... */
 151         tnxar = tnxar_open(ARCHIVE_FILE_INSTALLED);
 152         assert(tnxar != NULL);
 153     }
 154
 155     font_freelist = freelist_create();
 156
 157     /* Load fonts from resource file */
 158     for (i=0; i<FONT_COUNT; i++) {
 159         if (font_desc[i].filename != NULL) {
 160             assert(tnxar_set_current_filename(tnxar, font_desc[i].filename) != 0);
 161             font_data = tnxar_read_current(tnxar);
 162             freelist_append(font_freelist, font_data);
 163         }
 164         assert(font_data != NULL);
 165         rw = SDL_RWFromMem(font_data, tnxar_size_current(tnxar));
 166         fonts[i].data = TTF_OpenFontRW(rw, 1, font_desc[i].size);
 167         assert(fonts[i].data != NULL);
 168         TTF_SetFontStyle(fonts[i].data, font_desc[i].style);
 169     }
 170
 171     draw_button(40, (HEIGHT-40)/2, WIDTH-80, 40, 100, 100, 100, 1);
 172     store_screen();
 173     updatescr();
 174
 175     for( i=0; i<GR_COUNT; i++) {
 176         if (tnxar_set_current_filename(tnxar, graphics[i]) != 0) {
 177             d = tnxar_read_current(tnxar);
 178             tmp = IMG_Load_RW(SDL_RWFromMem(d, tnxar_size_current(tnxar)), 1);
 179             free(d);
 180         } else {
 181             fprintf(stderr, "Cannot find file: %s\n", graphics[i]);
 182             exit(EXIT_FAILURE);
 183         }
 184         if( !tmp) {
 185             fprintf( stderr, "Error: %s\n", SDL_GetError());
 186             continue;
 187         }
 188
 189         /* Convert to RGBA in the display format */
 190         data = SDL_DisplayFormatAlpha(tmp);
 191         SDL_FreeSurface(tmp);
 192
 193         if( !data) {
 194             fprintf( stderr, "Error: %s\n", SDL_GetError());
 195             continue;
 196         }
 197         images[i].data = data;
 198
 199         draw_button(40, (HEIGHT-40)/2, (WIDTH-80)*i/(GR_COUNT+SOUND_MAX), 40, 100, 250, 100, 0);
 200         rectangle(40+BUTTON_BORDER*2, (HEIGHT-40)/2+20+BUTTON_BORDER, (WIDTH-80)*i/(GR_COUNT+SOUND_MAX)-BUTTON_BORDER*2, 10, 170, 250, 170);
 201         updatescr();
 202     }
 203     tnxar_close(tnxar);
 204 }
 205
 206 void uninit_graphics() {
 207     int i;
 208
 209     for( i=0; i<GR_COUNT; i++) {
 210         SDL_FreeSurface( images[i].data);
 211     }
 212
 213     if( buffer != NULL) {
 214         SDL_FreeSurface( buffer);
 215     }
 216
 217     if (background != NULL) {
 218         SDL_FreeSurface(background);
 219     }
 220
 221     free(rect_update_cache);
 222     free(rect_update_old);
 223     free(images);
 224
 225     for (i=0; i<FONT_COUNT; i++) {
 226         TTF_CloseFont(fonts[i].data);
 227         fonts[i].data = NULL;
 228     }
 229     free(fonts);
 230
 231     freelist_free_all(font_freelist);
 232
 233     TTF_Quit();
 234 }
 235
 236
 237 FreeList* freelist_create()
 238 {
 239     FreeList* list = (FreeList*)malloc(sizeof(FreeList));
 240     assert(list != NULL);
 241
 242     list->head = NULL;
 243
 244     return list;
 245 }
 246
 247 void freelist_append(FreeList* list, char* data)
 248 {
 249     FreeListItem* new_item = (FreeListItem*)malloc(sizeof(FreeListItem));
 250
 251     assert(list != NULL);
 252     assert(data != NULL);
 253
 254     new_item->data = data;
 255
 256     /* Insert item at the beginning of list */
 257     new_item->next = list->head;
 258     list->head = new_item;
 259 }
 260
 261 void freelist_free_all(FreeList* list)
 262 {
 263     FreeListItem* next;
 264
 265     assert(list != NULL);
 266
 267     while (list->head != NULL) {
 268         /* Remove one item from the head of the list */
 269         next = list->head->next;
 270         free(list->head->data);
 271         free(list->head);
 272         list->head = next;
 273     }
 274
 275     free(list);
 276 }
 277
 278
 279 int get_image_width( image_id id) {
 280     return images[id].data->w;
 281 }
 282
 283 int get_image_height( image_id id) {
 284     return images[id].data->h;
 285 }
 286
 287 int get_sprite_width( image_id id, int items) {
 288     return images[id].data->w / items;
 289 }
 290
 291 void show_sprite( image_id id, int pos, int items, int x_offset,
 292         int y_offset, int opacity)
 293 {
 294     assert(id < GR_COUNT);
 295     SDL_SetAlpha(images[id].data, SDL_SRCALPHA | SDL_RLEACCEL, opacity);
 296     blit_surface(images[id].data, x_offset, y_offset, pos, items);
 297 }
 298
 299 void show_image_rotozoom(image_id id, int x, int y, float rotate, float zoom)
 300 {
 301     SDL_Surface* tmp;
 302     SDL_Rect src, dst;
 303
 304     assert(id < GR_COUNT);
 305
 306     tmp = rotozoomSurface(images[id].data, rotate, zoom, SMOOTHING_OFF);
 307
 308     dst.w = src.w = tmp->w;
 309     dst.h = src.h = tmp->h;
 310     src.x = 0;
 311     src.y = 0;
 312     dst.x = x - src.w/2;
 313     dst.y = y - src.h/2;
 314
 315     SDL_BlitSurface(tmp, &src, screen, &dst);
 316     update_rect2(dst);
 317     SDL_FreeSurface(tmp);
 318 }
 319
 320 void fill_image_offset( image_id id, int x, int y, int w, int h, int offset_x, int offset_y) {
 321     SDL_Surface *bitmap;
 322     SDL_Rect src, dst;
 323     int dx = 0, dy = 0, cx, cy;
 324
 325     if( id >= GR_COUNT) return;
 326
 327     bitmap = images[id].data;
 328
 329     /* Make negative offsets positive */
 330     if (offset_x < 0) {
 331         offset_x = (offset_x%bitmap->w)+bitmap->w;
 332     }
 333     if (offset_y < 0) {
 334         offset_y = (offset_y%bitmap->h)+bitmap->h;
 335     }
 336
 337     src.y = offset_y % bitmap->h;
 338     while( dy < h) {
 339         src.h = dst.h = cy = (h-dy > bitmap->h-src.y)?(bitmap->h-src.y):(h-dy);
 340         dst.y = y+dy;
 341
 342         dx = 0;
 343         src.x = offset_x % bitmap->w;
 344         while( dx < w) {
 345             src.w = dst.w = cx = (w-dx > bitmap->w-src.x)?(bitmap->w-src.x):(w-dx);
 346             dst.x = x+dx;
 347
 348             SDL_BlitSurface( bitmap, &src, screen, &dst);
 349             update_rect2(dst);
 350
 351             dx += cx;
 352             src.x = 0;
 353         }
 354
 355         dy += cy;
 356         src.y = 0;
 357     }
 358 }
 359
 360 void line_horiz( int y, Uint8 r, Uint8 g, Uint8 b) {
 361     rectangle(0, y, screen->w, 1, r, g, b);
 362 }
 363
 364 void line_vert( int x, Uint8 r, Uint8 g, Uint8 b) {
 365     rectangle(x, 0, 1, screen->h, r, g, b);
 366 }
 367
 368 void rectangle( int x, int y, int w, int h, Uint8 r, Uint8 g, Uint8 b) {
 369     Uint32 color = SDL_MapRGB( screen->format, r, g, b);
 370     SDL_Rect rect;
 371
 372     rect.x = x;
 373     rect.y = y;
 374     rect.w = w;
 375     rect.h = h;
 376
 377     SDL_FillRect( screen, &rect, color);
 378     update_rect(x, y, w, h);
 379 }
 380
 381 void rectangle_alpha(int x, int y, int w, int h, Uint8 r, Uint8 g, Uint8 b, Uint8 opacity)
 382 {
 383     Uint32 color = SDL_MapRGB(screen->format, r, g, b);
 384     SDL_Surface *buf;
 385     SDL_Rect rect, rect2;
 386
 387     buf = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h,
 388                  screen->format->BitsPerPixel,
 389                  screen->format->Rmask,
 390                  screen->format->Gmask,
 391                  screen->format->Bmask,
 392                  screen->format->Amask);
 393
 394     rect.x = rect.y = 0;
 395     rect2.x = x;
 396     rect2.y = y;
 397     rect.w = rect2.w = w;
 398     rect.h = rect2.h = h;
 399
 400     SDL_FillRect(buf, &rect, color);
 401     SDL_SetAlpha(buf, SDL_RLEACCEL | SDL_SRCALPHA, opacity);
 402     SDL_BlitSurface(buf, &rect, screen, &rect2);
 403     update_rect(x, y, w, h);
 404
 405     SDL_FreeSurface(buf);
 406 }
 407
 408 void draw_button( int x, int y, int w, int h, Uint8 r, Uint8 g, Uint8 b, char pressed) {
 409     float diff = (pressed?1.0-BUTTON_HIGHLIGHT:1.0+BUTTON_HIGHLIGHT);
 410     rectangle(x, y, w, h, MIN(r*diff, 255), MIN(g*diff, 255), MIN(b*diff, 255));
 411     rectangle(x+BUTTON_BORDER, y+BUTTON_BORDER, w-BUTTON_BORDER, h-BUTTON_BORDER, MIN(r/diff, 255), MIN(g/diff, 255), MIN(b/diff, 255));
 412     rectangle(x+BUTTON_BORDER, y+BUTTON_BORDER, w-2*BUTTON_BORDER, h-2*BUTTON_BORDER, r, g, b);
 413 }
 414
 415 void draw_button_text(const char* s, int x, int y, int w, int h, Uint8 r, Uint8 g, Uint8 b, char pressed) {
 416     int font_x, font_y;
 417     float factor = 0.3;
 418     pressed = pressed?1:0;
 419     draw_button( x, y, w, h, r, g, b, pressed);
 420     font_x = x + w/2 - font_get_string_width(FONT_SMALL, s)/2 + pressed*BUTTON_BORDER;
 421     font_y = y + h/2 - font_get_height(FONT_SMALL)/2 + pressed*BUTTON_BORDER;
 422     font_draw_string_color(FONT_SMALL, s, font_x, font_y, (Uint8)(r*factor), (Uint8)(g*factor), (Uint8)(b*factor));
 423 }
 424
 425 void clear_screen()
 426 {
 427     SDL_Rect rect;
 428
 429     rect.x = rect.y = 0;
 430     rect.w = WIDTH;
 431     rect.h = HEIGHT;
 432
 433     SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format, 0, 0, 0));
 434 }
 435
 436 void store_screen()
 437 {
 438     SDL_BlitSurface(screen, NULL, background, NULL);
 439     rect_update_old[0].x = rect_update_old[0].y = 0;
 440     rect_update_old[0].w = WIDTH;
 441     rect_update_old[0].h = HEIGHT;
 442     rect_update_old_count = 1;
 443     rect_update_cache_current = 0;
 444 }
 445
 446 void reset_screen()
 447 {
 448     int i;
 449     SDL_Rect* tmp;
 450     SDL_BlitSurface(background, NULL, screen, NULL);
 451
 452     for (i=0; i<rect_update_cache_current; i++) {
 453         SDL_BlitSurface(background, &rect_update_cache[i], screen, &rect_update_cache[i]);
 454     }
 455
 456     /* Save rects I've just updated for redraw later */
 457     tmp = rect_update_cache;
 458     rect_update_cache = rect_update_old;
 459     rect_update_old = tmp;
 460     rect_update_old_count = rect_update_cache_current;
 461     rect_update_cache_current = 0;
 462 }
 463
 464 void update_rect(Sint32 x, Sint32 y, Sint32 w, Sint32 h)
 465 {
 466     SDL_Rect* u = NULL;
 467     static int inside = 0;
 468     if (inside) return;
 469     inside = 1;
 470
 471 #ifdef DRAW_UPDATE_RECTANGLE
 472     rectangle(x, y, w, h, 50+rand()%200, 50+rand()%200 ,50+rand()%200);
 473 #endif
 474
 475     if ((x >= WIDTH) | (y >= HEIGHT) | (x+w <= 0) | (y+h <= 0) | (!w) | (!h)) {
 476         inside = 0;
 477         return;
 478     }
 479
 480     if (rect_update_cache_current == RECT_UPDATE_CACHE) {
 481         fprintf(stderr, "Overflow\n");
 482         rect_update_cache_current = 0;
 483     }
 484
 485     u = &(rect_update_cache[rect_update_cache_current]);
 486
 487     if (x < 0/* && x+w > 0*/) {
 488         w += x;
 489         x = 0;
 490     }
 491     if (y < 0/* && y+h > 0*/) {
 492         h += y;
 493         y = 0;
 494     }
 495
 496     if (x+w >= WIDTH) {
 497         w -= (x+w-WIDTH+1);
 498     }
 499
 500     if (y+h >= HEIGHT) {
 501         h -= (y+h-HEIGHT+1);
 502     }
 503
 504     if (w==0 || h==0) {
 505         inside = 0;
 506         return;
 507     }
 508
 509     u->x = x;
 510     u->y = y;
 511     u->w = w;
 512     u->h = h;
 513
 514     rect_update_cache_current++;
 515
 516     inside = 0;
 517 }
 518
 519 void updatescr()
 520 {
 521     Uint32 ticks = SDL_GetTicks();
 522     SDL_Rect *r_current = NULL, *end_current = NULL;
 523     SDL_Rect *r_old = NULL;
 524
 525     static int fading_last_time = 0;
 526     unsigned char fading_now = ticks < fading_start+FADE_DURATION;
 527
 528     if (fading_now) {
 529         SDL_SetAlpha(buffer, SDL_SRCALPHA | SDL_RLEACCEL, 255-255*(ticks-fading_start)/FADE_DURATION);
 530         SDL_BlitSurface(buffer, NULL, screen, NULL);
 531         SDL_UpdateRect(screen, 0, 0, 0, 0);
 532     } else if (fading_last_time && !fading_now) {
 533         SDL_UpdateRect(screen, 0, 0, 0, 0);
 534     } else {
 535         if (rect_update_old_count == rect_update_cache_current) {
 536             /* Merge rects into one single rect list */
 537             r_old = rect_update_old;
 538             r_current = rect_update_cache;
 539             end_current = rect_update_cache + rect_update_cache_current;
 540             while (r_current != end_current) {
 541                 r_old->w = MAX(r_current->x+r_current->w, r_old->x+r_old->w);
 542                 r_old->h = MAX(r_current->y+r_current->h, r_old->y+r_old->h);
 543                 r_old->x = MIN(r_current->x, r_old->x);
 544                 r_old->y = MIN(r_current->y, r_old->y);
 545                 r_old->w -= r_old->x;
 546                 r_old->h -= r_old->y;
 547
 548                 r_current++;
 549                 r_old++;
 550             }
 551             SDL_UpdateRects(screen, rect_update_old_count, rect_update_old);
 552         } else {
 553             SDL_UpdateRects(screen, rect_update_old_count, rect_update_old);
 554             SDL_UpdateRects(screen, rect_update_cache_current, rect_update_cache);
 555         }
 556     }
 557
 558     reset_screen();
 559     fading_last_time = fading_now;
 560 }
 561
 562 void start_fade() {
 563     SDL_BlitSurface( screen, NULL, buffer, NULL);
 564     fading_start = SDL_GetTicks();
 565 }
 566
 567 SDL_Surface* font_render_surface(font_id id, const char* text, Uint8 r,
 568         Uint8 g, Uint8 b)
 569 {
 570     SDL_Surface *result;
 571     SDL_Color color;
 572
 573     color.r = r;
 574     color.g = g;
 575     color.b = b;
 576
 577     assert(id < FONT_COUNT);
 578
 579     result = TTF_RenderText_Blended(fonts[id].data, text, color);
 580
 581     assert(result != NULL);
 582
 583     return result;
 584 }
 585
 586 void blit_surface(SDL_Surface* surface, int x, int y, int pos, int count)
 587 {
 588     SDL_Rect src, dst;
 589
 590     dst.w = src.w = surface->w/count;
 591     dst.h = src.h = surface->h;
 592     src.x = src.w*pos;
 593     src.y = 0;
 594     dst.x = x;
 595     dst.y = y;
 596
 597     SDL_BlitSurface(surface, &src, screen, &dst);
 598     update_rect2(dst);
 599 }
 600
 601 SDL_Surface* get_surface(image_id id)
 602 {
 603     assert(id < GR_COUNT);
 604     return images[id].data;
 605 }
 606
 607 void font_draw_string_color(font_id id, const char* s, int x_offset, int y_offset, Uint8 r, Uint8 g, Uint8 b) {
 608     SDL_Surface *text;
 609
 610     text = font_render_surface(id, s, r, g, b);
 611     blit_surface_simple(text, x_offset, y_offset);
 612     SDL_FreeSurface(text);
 613 }
 614
 615 int font_get_string_width(font_id id, const char* s) {
 616     int w, h;
 617
 618     assert(id < FONT_COUNT);
 619
 620     if (TTF_SizeText(fonts[id].data, s, &w, &h) != 0) {
 621         return 0;
 622     }
 623
 624     return w;
 625 }
 626
 627 int font_get_height(font_id id) {
 628     assert(id < FONT_COUNT);
 629     return TTF_FontHeight(fonts[id].data);
 630 }
 631
 632 void draw_line_faded( int x1, int y1, int x2, int y2, int r, int g, int b, int r2, int g2, int b2) {
 633     float step, dx, dy, x = x1, y = y1;
 634     int i;
 635     char fade = (r!=r2 || g!=g2 || b!=b2);
 636
 637     step = (float)(abs(x2-x1)>abs(y2-y1)?abs(x2-x1):abs(y2-y1));
 638     dx = (float)(x2-x1) / step;
 639     dy = (float)(y2-y1) / step;
 640
 641     SDL_LockSurface( screen);
 642     for( i=0; i<step; i++) {
 643         x += dx;
 644         y += dy;
 645         if( x < 0.0 || x >= WIDTH || y < 0.0 || y >= HEIGHT) {
 646             continue;
 647         }
 648         if( fade) {
 649             SET_PIXEL_RGB( screen, (int)x, (int)y, (r*(step-i)+r2*i)/step, (g*(step-i)+g2*i)/step, (b*(step-i)+b2*i)/step);
 650         } else {
 651             SET_PIXEL_RGB( screen, (int)x, (int)y, r, g, b);
 652         }
 653     }
 654     SDL_UnlockSurface( screen);
 655 }
 656