1 /* 2 * xrick/src/e_bullet.c 3 * 4 * Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net). All rights reserved. 5 * 6 * The use and distribution terms for this software are contained in the file 7 * named README, which can be found in the root of this distribution. By 8 * using this software in any fashion, you are agreeing to be bound by the 9 * terms of this license. 10 * 11 * You must not remove this notice, or any other, from this software. 12 */ 13 14 #include "system.h" 15 #include "game.h" 16 #include "ents.h" 17 #include "e_bullet.h" 18 19 #include "maps.h" 20 21 /* 22 * public vars (for performance reasons) 23 */ 24 S8 e_bullet_offsx; 25 S16 e_bullet_xc, e_bullet_yc; 26 27 /* 28 * Initialize bullet 29 */ 30 void e_bullet_init(U16 x,U16 y)31e_bullet_init(U16 x, U16 y) 32 { 33 E_BULLET_ENT.n = 0x02; 34 E_BULLET_ENT.x = x; 35 E_BULLET_ENT.y = y + 0x0006; 36 if (game_dir == LEFT) { 37 e_bullet_offsx = -0x08; 38 E_BULLET_ENT.sprite = 0x21; 39 } 40 else { 41 e_bullet_offsx = 0x08; 42 E_BULLET_ENT.sprite = 0x20; 43 } 44 #ifdef ENABLE_SOUND 45 syssnd_play(WAV_BULLET, 1); 46 #endif 47 } 48 49 50 /* 51 * Entity action 52 * 53 * ASM 1883, 0F97 54 */ 55 void e_bullet_action(UNUSED (U8 e))56e_bullet_action(UNUSED(U8 e)) 57 { 58 /* move bullet */ 59 E_BULLET_ENT.x += e_bullet_offsx; 60 61 if (E_BULLET_ENT.x <= -0x10 || E_BULLET_ENT.x > 0xe8) { 62 /* out: deactivate */ 63 E_BULLET_ENT.n = 0; 64 } 65 else { 66 /* update bullet center coordinates */ 67 e_bullet_xc = E_BULLET_ENT.x + 0x0c; 68 e_bullet_yc = E_BULLET_ENT.y + 0x05; 69 if (map_eflg[map_map[e_bullet_yc >> 3][e_bullet_xc >> 3]] & 70 MAP_EFLG_SOLID) { 71 /* hit something: deactivate */ 72 E_BULLET_ENT.n = 0; 73 } 74 } 75 } 76 77 78 /* eof */ 79 80 81