constants.h

   1 /**
   2   @file constants.h
   3
   4   This file contains definitions of game constants that are not considered
   5   part of game settings and whose change can ffect the game balance and
   6   playability, e.g. physics constants.
   7
   8   by Miloslav Ciz (drummyfish), 2019
   9
  10   Released under CC0 1.0 (https://creativecommons.org/publicdomain/zero/1.0/)
  11   plus a waiver of all other intellectual property. The goal of this work is to
  12   be and remain completely in the public domain forever, available for any use
  13   whatsoever.
  14 */
  15
  16 #ifndef _SFG_CONSTANTS_H
  17 #define _SFG_CONSTANTS_H
  18
  19 /**
  20   How quickly player moves, in squares per second.
  21 */
  22 #define SFG_PLAYER_MOVE_SPEED 7
  23
  24 /**
  25   Gravity acceleration in squares / (second^2).
  26 */
  27 #define SFG_GRAVITY_ACCELERATION 30
  28
  29 /**
  30   Initial upwards speed of player's jump, in squares per second.
  31 */
  32 #define SFG_PLAYER_JUMP_SPEED 5
  33
  34 /**
  35   Melee and close-up attack range, in RCL_Units.
  36 */
  37 #define SFG_MELEE_RANGE 1600
  38
  39 /**
  40   When a projectile is shot, it'll be offset by this distance (in RCL_Units)
  41   from the shooter.
  42 */
  43
  44 #define SFG_PROJECTILE_SPAWN_OFFSET 256
  45
  46 /**
  47   Player's melee hit range, in RCL_Units (RCL_UNITS_PER_SQUARE means full angle,
  48   180 degrees to both sides).
  49 */
  50 #define SFG_PLAYER_MELEE_ANGLE 512
  51
  52 /**
  53   How quickly elevators and squeezers move, in RCL_Unit per second.
  54 */
  55 #define SFG_MOVING_WALL_SPEED 1024
  56
  57 /**
  58   How quickly doors open and close, in RCL_Unit per second.
  59 */
  60 #define SFG_DOOR_OPEN_SPEED 2048
  61
  62 /**
  63   Helper special state value.
  64 */
  65 #define SFG_CANT_SAVE 255
  66
  67 /**
  68   Says the distance in RCL_Units at which level elements (items, monsters etc.)
  69   are active.
  70 */
  71 #define SFG_LEVEL_ELEMENT_ACTIVE_DISTANCE (12 * 1024)
  72
  73 /**
  74   Rate at which AI will be updated, which also affects how fast enemies will
  75   appear.
  76 */
  77 #define SFG_AI_FPS 4
  78
  79 /**
  80   Says a probability (0 - 255) of the AI changing its state during one update
  81   step.
  82 */
  83 #define SFG_AI_RANDOM_CHANGE_PROBABILITY 40
  84
  85 /**
  86   Distance at which level elements (sprites) collide, in RCL_Unit (1024 per
  87   square).
  88 */
  89 #define SFG_ELEMENT_COLLISION_RADIUS 1800
  90
  91 /**
  92   Height, in RCL_Units, at which collisions happen with level elements
  93   (sprites).
  94 */
  95 #define SFG_ELEMENT_COLLISION_HEIGHT 1024
  96
  97 /**
  98   Distance at which explosion does damage and throws away the player, in
  99   RCL_Units. Should be higher than SFG_ELEMENT_COLLISION_RADIUS so that
 100   exploded rockets also hurt the target.
 101 */
 102 #define SFG_EXPLOSION_RADIUS 2000
 103
 104 /**
 105   Distance in RCL_Units which the player is pushed away by an explosion. Watch
 106   out, a slightly higher value can make player go through walls. Rather keep
 107   this under RCL_UNITS_PER_SQUARE;
 108 */
 109 #define SFG_EXPLOSION_PUSH_AWAY_DISTANCE 1023
 110
 111 /**
 112   How much damage triggers a barrel explosion.
 113 */
 114
 115 #define SFG_BARREL_EXPLOSION_DAMAGE_THRESHOLD 3
 116
 117 /**
 118   Maximum player health.
 119 */
 120 #define SFG_PLAYER_MAX_HEALTH 125
 121
 122 /**
 123   Start health of player.
 124 */
 125 #define SFG_PLAYER_START_HEALTH 100
 126
 127 /**
 128   At which value health indicator shows a warning (red color).
 129 */
 130 #define SFG_PLAYER_HEALTH_WARNING_LEVEL 20
 131
 132 /**
 133   Amount of health that is increased by taking a health kit.
 134 */
 135 #define SFG_HEALTH_KIT_VALUE 20
 136
 137 /**
 138   How much randomness (positive and negative) will be added to damage
 139   (e.g. by weapons, explosions, ...). This constant is is 0 to 255, 255 meaning
 140   100% of the base value.
 141 */
 142 #define SFG_DAMAGE_RANDOMNESS 64
 143
 144 /**
 145   Height of monster collision BBox in RCL_Units.
 146 */
 147 #define SFG_MONSTER_COLLISION_HEIGHT 1024
 148
 149 /**
 150   Specifies key repeat delay, in ms.
 151 */
 152 #define SFG_KEY_REPEAT_DELAY 500
 153
 154 /**
 155   Specifies key repeat period, in ms.
 156 */
 157 #define SFG_KEY_REPEAT_PERIOD 150
 158
 159 /**
 160   Angle in which multiple projectiles are spread, RCL_Units.
 161 */
 162 #define SFG_PROJECTILE_SPREAD_ANGLE 100
 163
 164 #define SFG_MAX_MONSTERS 64
 165
 166 #define SFG_MAX_PROJECTILES 12
 167
 168 #define SFG_MAX_DOORS 32
 169
 170 #define SFG_AMMO_BULLETS 0
 171 #define SFG_AMMO_ROCKETS 1
 172 #define SFG_AMMO_PLASMA 2
 173
 174 #define SFG_AMMO_TOTAL 3
 175
 176 #define SFG_AMMO_NONE SFG_AMMO_TOTAL
 177
 178 #define SFG_AMMO_INCREASE_BULLETS 10
 179 #define SFG_AMMO_INCREASE_ROCKETS 5
 180 #define SFG_AMMO_INCREASE_PLASMA 8
 181
 182 #define SFG_AMMO_MAX_BULLETS 200
 183 #define SFG_AMMO_MAX_ROCKETS 100
 184 #define SFG_AMMO_MAX_PLASMA 150
 185
 186 /**
 187   Duration of story text (intro/outro) in ms.
 188 */
 189 #define SFG_STORYTEXT_DURATION 15000
 190
 191 /**
 192   Time in ms of the player death animation.
 193 */
 194 #define SFG_LOSE_ANIMATION_DURATION 2000
 195
 196 /**
 197   Time in ms of the level win animation.
 198 */
 199 #define SFG_WIN_ANIMATION_DURATION 2500
 200
 201 /**
 202   Time in ms of the level start stage.
 203 */
 204 #define SFG_LEVEL_START_DURATION 1500
 205
 206 /**
 207   Vertical sprite size, in RCL_Units.
 208 */
 209 #define SFG_BASE_SPRITE_SIZE RCL_UNITS_PER_SQUARE
 210
 211 /**
 212   Default value of the settings byte.
 213 */
 214 #define SFG_DEFAULT_SETTINGS 0x03
 215
 216 // -----------------------------------------------------------------------------
 217 // derived constants
 218
 219 #define SFG_GAME_RESOLUTION_X \
 220   (SFG_SCREEN_RESOLUTION_X / SFG_RESOLUTION_SCALEDOWN)
 221
 222 #define SFG_GAME_RESOLUTION_Y \
 223   (SFG_SCREEN_RESOLUTION_Y / SFG_RESOLUTION_SCALEDOWN)
 224
 225 #define SFG_MS_PER_FRAME (1000 / SFG_FPS) // ms per frame with target FPS
 226
 227 #if SFG_MS_PER_FRAME == 0
 228   #undef SFG_MS_PER_FRAME
 229   #define SFG_MS_PER_FRAME 1
 230 #endif
 231
 232 #define SFG_KEY_REPEAT_DELAY_FRAMES \
 233   (SFG_KEY_REPEAT_DELAY / SFG_MS_PER_FRAME)
 234
 235 #if SFG_KEY_REPEAT_DELAY_FRAMES == 0
 236   #undef SFG_KEY_REPEAT_DELAY_FRAMES
 237   #define SFG_KEY_REPEAT_DELAY_FRAMES 1
 238 #endif
 239
 240 #define SFG_KEY_REPEAT_PERIOD_FRAMES \
 241   (SFG_KEY_REPEAT_PERIOD / SFG_MS_PER_FRAME)
 242
 243 #if SFG_KEY_REPEAT_PERIOD_FRAMES == 0
 244   #undef SFG_KEY_REPEAT_PERIOD_FRAMES
 245   #define SFG_KEY_REPEAT_PERIOD_FRAMES 1
 246 #endif
 247
 248 #define SFG_WEAPON_IMAGE_SCALE \
 249   (SFG_GAME_RESOLUTION_X / (SFG_TEXTURE_SIZE * 5))
 250
 251 #if SFG_WEAPON_IMAGE_SCALE == 0
 252   #undef SFG_WEAPON_IMAGE_SCALE
 253   #define SFG_WEAPON_IMAGE_SCALE 1
 254 #endif
 255
 256 #define SFG_WEAPONBOB_OFFSET_PIXELS \
 257   (SFG_WEAPONBOB_OFFSET * SFG_WEAPON_IMAGE_SCALE)
 258
 259 #define SFG_WEAPON_IMAGE_POSITION_X \
 260   (SFG_GAME_RESOLUTION_X / 2 - (SFG_WEAPON_IMAGE_SCALE * SFG_TEXTURE_SIZE) / 2)
 261
 262 #if SFG_GAME_RESOLUTION_Y > 70
 263   #define SFG_WEAPON_IMAGE_POSITION_Y \
 264     (SFG_GAME_RESOLUTION_Y - (SFG_WEAPON_IMAGE_SCALE * SFG_TEXTURE_SIZE))
 265 #elif SFG_GAME_RESOLUTION_Y > 50
 266   #define SFG_WEAPON_IMAGE_POSITION_Y (SFG_GAME_RESOLUTION_Y \
 267     - ((SFG_WEAPON_IMAGE_SCALE * 3 * SFG_TEXTURE_SIZE) / 4))
 268 #else
 269   #define SFG_WEAPON_IMAGE_POSITION_Y \
 270     (SFG_GAME_RESOLUTION_Y - SFG_TEXTURE_SIZE / 2)
 271 #endif
 272
 273 #define SFG_PLAYER_TURN_UNITS_PER_FRAME \
 274   ((SFG_PLAYER_TURN_SPEED * RCL_UNITS_PER_SQUARE) / (360 * SFG_FPS))
 275
 276 #if SFG_PLAYER_TURN_UNITS_PER_FRAME == 0
 277   #undef SFG_PLAYER_TURN_UNITS_PER_FRAME
 278   #define SFG_PLAYER_TURN_UNITS_PER_FRAME 1
 279 #endif
 280
 281 #define SFG_PLAYER_MOVE_UNITS_PER_FRAME \
 282   ((SFG_PLAYER_MOVE_SPEED * RCL_UNITS_PER_SQUARE) / SFG_FPS)
 283
 284 #if SFG_PLAYER_MOVE_UNITS_PER_FRAME == 0
 285   #undef SFG_PLAYER_MOVE_UNITS_PER_FRAME
 286   #define SFG_PLAYER_MOVE_UNITS_PER_FRAME 1
 287 #endif
 288
 289 #define SFG_GRAVITY_SPEED_INCREASE_PER_FRAME \
 290   ((SFG_GRAVITY_ACCELERATION * RCL_UNITS_PER_SQUARE) / (SFG_FPS * SFG_FPS))
 291
 292 #if SFG_GRAVITY_SPEED_INCREASE_PER_FRAME == 0
 293   #undef SFG_GRAVITY_SPEED_INCREASE_PER_FRAME
 294   #define SFG_GRAVITY_SPEED_INCREASE_PER_FRAME 1
 295 #endif
 296
 297 #define SFG_PLAYER_JUMP_OFFSET_PER_FRAME \
 298   (((SFG_PLAYER_JUMP_SPEED * RCL_UNITS_PER_SQUARE) / SFG_FPS) \
 299   - SFG_GRAVITY_SPEED_INCREASE_PER_FRAME / 2)
 300   /* ^ This substraction corrects the initial veloc. so that the numeric curve
 301      copies the analytical (smooth) curve. Without it the numeric curve goes
 302      ABOVE and makes player jump higher with lower FPS. To make sense of this
 303      try to solve the differential equation and plot it. */
 304
 305 #if SFG_PLAYER_JUMP_OFFSET_PER_FRAME == 0
 306   #undef SFG_PLAYER_JUMP_OFFSET_PER_FRAME
 307   #define SFG_PLAYER_JUMP_OFFSET_PER_FRAME 1
 308 #endif
 309
 310 #define SFG_HEADBOB_FRAME_INCREASE_PER_FRAME \
 311   (SFG_HEADBOB_SPEED / SFG_FPS)
 312
 313 #if SFG_HEADBOB_FRAME_INCREASE_PER_FRAME == 0
 314   #undef SFG_HEADBOB_FRAME_INCREASE_PER_FRAME
 315   #define SFG_HEADBOB_FRAME_INCREASE_PER_FRAME 1
 316 #endif
 317
 318 #define SFG_HEADBOB_ENABLED (SFG_HEADBOB_SPEED > 0 && SFG_HEADBOB_OFFSET > 0)
 319
 320 #define SFG_CAMERA_SHEAR_STEP_PER_FRAME \
 321   ((SFG_GAME_RESOLUTION_Y * SFG_CAMERA_SHEAR_SPEED) / SFG_FPS)
 322
 323 #if SFG_CAMERA_SHEAR_STEP_PER_FRAME == 0
 324   #undef SFG_CAMERA_SHEAR_STEP_PER_FRAME
 325   #define SFG_CAMERA_SHEAR_STEP_PER_FRAME 1
 326 #endif
 327
 328 #define SFG_CAMERA_MAX_SHEAR_PIXELS \
 329   ((SFG_CAMERA_MAX_SHEAR * SFG_GAME_RESOLUTION_Y) / 1024)
 330
 331 #define SFG_FONT_SIZE_SMALL \
 332  (SFG_GAME_RESOLUTION_X / (SFG_FONT_CHARACTER_SIZE * 50))
 333
 334 #if SFG_FONT_SIZE_SMALL == 0
 335   #undef SFG_FONT_SIZE_SMALL
 336   #define SFG_FONT_SIZE_SMALL 1
 337 #endif
 338
 339 #define SFG_FONT_SIZE_MEDIUM \
 340   (SFG_GAME_RESOLUTION_X / (SFG_FONT_CHARACTER_SIZE * 30))
 341
 342 #if SFG_FONT_SIZE_MEDIUM == 0
 343   #undef SFG_FONT_SIZE_MEDIUM
 344   #define SFG_FONT_SIZE_MEDIUM 1
 345 #endif
 346
 347 #define SFG_FONT_SIZE_BIG \
 348   (SFG_GAME_RESOLUTION_X / (SFG_FONT_CHARACTER_SIZE * 18))
 349
 350 #if SFG_FONT_SIZE_BIG == 0
 351   #undef SFG_FONT_SIZE_BIG
 352   #define SFG_FONT_SIZE_BIG 1
 353 #endif
 354
 355 #define SFG_Z_BUFFER_SIZE SFG_GAME_RESOLUTION_X
 356
 357 /**
 358   Step in which walls get higher, in raycastlib units.
 359 */
 360 #define SFG_WALL_HEIGHT_STEP (RCL_UNITS_PER_SQUARE / 4)
 361
 362 #define SFG_CEILING_MAX_HEIGHT\
 363   (16 * RCL_UNITS_PER_SQUARE - RCL_UNITS_PER_SQUARE / 2 )
 364
 365 #define SFG_DOOR_UP_DOWN_MASK 0x20
 366 #define SFG_DOOR_LOCK(doorRecord) ((doorRecord) >> 6)
 367 #define SFG_DOOR_VERTICAL_POSITION_MASK 0x1f
 368 #define SFG_DOOR_HEIGHT_STEP (RCL_UNITS_PER_SQUARE / 0x1f)
 369
 370 #define SFG_DOOR_INCREMENT_PER_FRAME \
 371   (SFG_DOOR_OPEN_SPEED / (SFG_DOOR_HEIGHT_STEP * SFG_FPS))
 372
 373 #if SFG_DOOR_INCREMENT_PER_FRAME == 0
 374   #undef SFG_DOOR_INCREMENT_PER_FRAME
 375   #define SFG_DOOR_INCREMENT_PER_FRAME 1
 376 #endif
 377
 378 #define SFG_MAX_ITEMS SFG_MAX_LEVEL_ELEMENTS
 379
 380 #define SFG_MAX_SPRITE_SIZE SFG_GAME_RESOLUTION_X
 381
 382 #define SFG_MAP_PIXEL_SIZE (SFG_GAME_RESOLUTION_Y / SFG_MAP_SIZE)
 383
 384 #if SFG_MAP_PIXEL_SIZE == 0
 385   #undef SFG_MAP_PIXEL_SIZE
 386   #define SFG_MAP_PIXEL_SIZE 1
 387 #endif
 388
 389 #define SFG_AI_UPDATE_FRAME_INTERVAL \
 390   (SFG_FPS / SFG_AI_FPS)
 391
 392 #if SFG_AI_UPDATE_FRAME_INTERVAL == 0
 393   #undef SFG_AI_UPDATE_FRAME_INTERVAL
 394   #define SFG_AI_UPDATE_FRAME_INTERVAL 1
 395 #endif
 396
 397 #define SFG_SPRITE_ANIMATION_FRAME_DURATION \
 398   (SFG_FPS / SFG_SPRITE_ANIMATION_SPEED)
 399
 400 #if SFG_SPRITE_ANIMATION_FRAME_DURATION == 0
 401   #undef SFG_SPRITE_ANIMATION_FRAME_DURATION
 402   #define SFG_SPRITE_ANIMATION_FRAME_DURATION 1
 403 #endif
 404
 405 #define SFG_HUD_MARGIN (SFG_GAME_RESOLUTION_X / 40)
 406
 407 #define SFG_HUD_BORDER_INDICATOR_WIDTH_PIXELS \
 408   (SFG_GAME_RESOLUTION_Y / SFG_HUD_BORDER_INDICATOR_WIDTH)
 409
 410 #define SFG_HUD_BORDER_INDICATOR_DURATION_FRAMES \
 411   (SFG_HUD_BORDER_INDICATOR_DURATION / SFG_MS_PER_FRAME)
 412
 413 #if SFG_HUD_BORDER_INDICATOR_DURATION_FRAMES == 0
 414   #define SFG_HUD_BORDER_INDICATOR_DURATION_FRAMES 1
 415 #endif
 416
 417 #define SFG_BLINK_PERIOD_FRAMES (SFG_BLINK_PERIOD / SFG_MS_PER_FRAME)
 418
 419 #define SFG_HUD_BAR_HEIGHT \
 420   (SFG_FONT_CHARACTER_SIZE * SFG_FONT_SIZE_MEDIUM + SFG_HUD_MARGIN * 2 + 1)
 421
 422 // -----------------------------------------------------------------------------
 423 // monsters
 424
 425 #define SFG_MONSTER_ATTACK_MELEE 0
 426 #define SFG_MONSTER_ATTACK_FIREBALL 1
 427 #define SFG_MONSTER_ATTACK_BULLET 2
 428 #define SFG_MONSTER_ATTACK_FIREBALL_BULLET 3
 429 #define SFG_MONSTER_ATTACK_PLASMA 4
 430 #define SFG_MONSTER_ATTACK_EXPLODE 5
 431 #define SFG_MONSTER_ATTACK_FIREBALL_PLASMA 6
 432
 433 #define SFG_MONSTER_ATTRIBUTE(attackType,aggressivity0to255,health0to255,spriteSize0to3) \
 434   ((uint16_t) ( \
 435    attackType | \
 436    ((aggressivity0to255 / 8) << 3) | \
 437    (spriteSize0to3 << 8) | \
 438    ((health0to255 / 4) << 10)))
 439
 440 #define SFG_GET_MONSTER_ATTACK_TYPE(monsterNumber) \
 441   (SFG_monsterAttributeTable[monsterNumber] & 0x0007)
 442
 443 #define SFG_GET_MONSTER_AGGRESSIVITY(monsterNumber) \
 444   (((SFG_monsterAttributeTable[monsterNumber] >> 3) & 0x1F) * 8)
 445
 446 #define SFG_GET_MONSTER_SPRITE_SIZE(monsterNumber) \
 447   ((SFG_monsterAttributeTable[monsterNumber] >> 8) & 0x03)
 448
 449 #define SFG_GET_MONSTER_MAX_HEALTH(monsterNumber) \
 450   (((SFG_monsterAttributeTable[monsterNumber] >> 10) & 0x3F) * 4)
 451
 452 /**
 453   Table of monster attributes, each as a 16bit word in format:
 454
 455   MSB hhhhhhssaaaattt LSB
 456
 457   ttt:    attack type
 458   aaaaa:  aggressivity (frequence of attacks), 0 to 31
 459   ss:     sprite size
 460   hhhhhh: health, 0 to 63
 461 */
 462 uint16_t SFG_monsterAttributeTable[SFG_MONSTERS_TOTAL] =
 463 {
 464   /* spider  */ SFG_MONSTER_ATTRIBUTE(SFG_MONSTER_ATTACK_FIREBALL,40,61,2),
 465   /* destr.  */ SFG_MONSTER_ATTRIBUTE(SFG_MONSTER_ATTACK_FIREBALL_BULLET,90,170,3),
 466   /* warrior */ SFG_MONSTER_ATTRIBUTE(SFG_MONSTER_ATTACK_MELEE,255,40,1),
 467   /* plasma  */ SFG_MONSTER_ATTRIBUTE(SFG_MONSTER_ATTACK_PLASMA,56,92,1),
 468   /* ender   */ SFG_MONSTER_ATTRIBUTE(SFG_MONSTER_ATTACK_FIREBALL_PLASMA,128,255,3),
 469   /* turret  */ SFG_MONSTER_ATTRIBUTE(SFG_MONSTER_ATTACK_BULLET,32,23,0),
 470   /* explod. */ SFG_MONSTER_ATTRIBUTE(SFG_MONSTER_ATTACK_EXPLODE,255,36,1)
 471 };
 472
 473 // -----------------------------------------------------------------------------
 474 // weapons and projectiles
 475
 476 #define SFG_WEAPON_KNIFE 0
 477 #define SFG_WEAPON_SHOTGUN 1
 478 #define SFG_WEAPON_MACHINE_GUN 2
 479 #define SFG_WEAPON_ROCKET_LAUNCHER 3
 480 #define SFG_WEAPON_PLASMAGUN 4
 481 #define SFG_WEAPON_SOLUTION 5
 482
 483 #define SFG_WEAPONS_TOTAL 6
 484
 485 #define SFG_WEAPON_ATTRIBUTE(fireType,projectileCount,fireCooldownMs) \
 486   ((uint8_t) (fireType | ((projectileCount - 1) << 2) | ((fireCooldownMs / (SFG_MS_PER_FRAME * 16)) << 4)))
 487
 488 #define SFG_GET_WEAPON_FIRE_TYPE(weaponNumber) \
 489   (SFG_weaponAttributeTable[weaponNumber] & 0x03)
 490
 491 #define SFG_GET_WEAPON_FIRE_COOLDOWN_FRAMES(weaponNumber) \
 492   ((SFG_weaponAttributeTable[weaponNumber] >> 4) * 16)
 493
 494 #define SFG_GET_WEAPON_PROJECTILE_COUNT(weaponNumber) \
 495   (((SFG_weaponAttributeTable[weaponNumber] >> 2) & 0x03) + 1)
 496
 497 #define SFG_MIN_WEAPON_COOLDOWN_FRAMES 8
 498
 499 #define SFG_WEAPON_FIRE_TYPE_MELEE 0
 500 #define SFG_WEAPON_FIRE_TYPE_BULLET 1
 501 #define SFG_WEAPON_FIRE_TYPE_FIREBALL 2
 502 #define SFG_WEAPON_FIRE_TYPE_PLASMA 3
 503
 504 #define SFG_WEAPON_FIRE_TYPES_TOTAL 4
 505
 506 /**
 507   Table of weapon attributes, each as a byte in format:
 508
 509   MSB ccccnnff LSB
 510
 511   ff:     fire type
 512   nn:     number of projectiles - 1
 513   cccc:   fire cooldown in frames, i.e. time after which the next shot can be
 514           shot again, ccccc has to be multiplied by 16 to get the real value
 515 */
 516 static const uint8_t SFG_weaponAttributeTable[SFG_WEAPONS_TOTAL] =
 517 {
 518   /* knife    */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_MELEE,1,650),    // DPS: 6.2
 519   /* shotgun  */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_BULLET,2,1250),  // DPS: 12.8
 520   /* m. gun   */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_BULLET,1,700),   // DPS: 11.4
 521   /* r. laun. */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_FIREBALL,1,850), // DPS: 28.2
 522   /* plasma   */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_PLASMA,1,550),   // DPS: 32.7
 523   /* solution */ SFG_WEAPON_ATTRIBUTE(SFG_WEAPON_FIRE_TYPE_PLASMA,4,1050)   // DPS: 85.7
 524 };
 525
 526 static const uint8_t SFG_attackDamageTable[SFG_WEAPON_FIRE_TYPES_TOTAL] =
 527 {
 528   /* melee                 */ 4,
 529   /* bullet                */ 8,
 530   /* explostion (fireball) */ 24,
 531   /* plasma                */ 18
 532 };
 533
 534 #define SFG_PROJECTILE_EXPLOSION 0
 535 #define SFG_PROJECTILE_FIREBALL 1
 536 #define SFG_PROJECTILE_PLASMA 2
 537 #define SFG_PROJECTILE_DUST 3
 538 #define SFG_PROJECTILE_BULLET 4
 539 #define SFG_PROJECTILE_NONE 255
 540
 541 #define SFG_PROJECTILES_TOTAL 5
 542
 543 #define SFG_PROJECTILE_ATTRIBUTE(speedSquaresPerSec,timeToLiveMs) \
 544   ((uint8_t) \
 545    ((((speedSquaresPerSec / 4 == 0) && (speedSquaresPerSec != 0)) ? 1 : speedSquaresPerSec / 4) | \
 546     ((timeToLiveMs / (8 * SFG_MS_PER_FRAME)) << 3)))
 547
 548 #define SFG_GET_PROJECTILE_SPEED_UPS(projectileNumber) \
 549   (((SFG_projectileAttributeTable[projectileNumber] & 0x07) * 4 * RCL_UNITS_PER_SQUARE) / SFG_FPS)
 550
 551 #define SFG_GET_PROJECTILE_FRAMES_TO_LIVE(projectileNumber) \
 552   ((SFG_projectileAttributeTable[projectileNumber] >> 3) * 8)
 553
 554 /**
 555   Table of projectile attributes, each as a byte in format:
 556
 557   MSB lllllsss LSB
 558
 559   fff:   half speed in game squares per second
 560   lllll: eigth of frames to live
 561 */
 562
 563 #define LOW_FPS (SFG_FPS < 24) ///< low FPS needs low speeds, because collisions
 564
 565 static const uint8_t SFG_projectileAttributeTable[SFG_PROJECTILES_TOTAL] =
 566 {
 567   /* explosion */ SFG_PROJECTILE_ATTRIBUTE(0,400),
 568   /* fireball  */ SFG_PROJECTILE_ATTRIBUTE(10,1000),
 569
 570 #if LOW_FPS
 571   /* plasma    */ SFG_PROJECTILE_ATTRIBUTE(17,500),
 572 #else
 573   /* plasma    */ SFG_PROJECTILE_ATTRIBUTE(18,500),
 574 #endif
 575
 576   /* dust      */ SFG_PROJECTILE_ATTRIBUTE(0,450),
 577
 578 #if LOW_FPS
 579   /* bullet    */ SFG_PROJECTILE_ATTRIBUTE(17,1000)
 580 #else
 581   /* bullet    */ SFG_PROJECTILE_ATTRIBUTE(28,1000)
 582 #endif
 583 };
 584
 585 #undef LOW_FPS
 586
 587 #endif // guard