81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
/*
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* xrick/src/e_bullet.c
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*
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* Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net). All rights reserved.
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*
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* The use and distribution terms for this software are contained in the file
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* named README, which can be found in the root of this distribution. By
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* using this software in any fashion, you are agreeing to be bound by the
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* terms of this license.
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*
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* You must not remove this notice, or any other, from this software.
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*/
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#include "system.h"
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#include "game.h"
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#include "ents.h"
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#include "e_bullet.h"
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#include "maps.h"
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/*
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* public vars (for performance reasons)
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*/
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S8 e_bullet_offsx;
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S16 e_bullet_xc, e_bullet_yc;
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/*
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* Initialize bullet
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*/
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void
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e_bullet_init(U16 x, U16 y)
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{
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E_BULLET_ENT.n = 0x02;
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E_BULLET_ENT.x = x;
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E_BULLET_ENT.y = y + 0x0006;
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if (game_dir == LEFT) {
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e_bullet_offsx = -0x08;
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E_BULLET_ENT.sprite = 0x21;
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}
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else {
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e_bullet_offsx = 0x08;
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E_BULLET_ENT.sprite = 0x20;
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}
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#ifdef ENABLE_SOUND
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syssnd_play(WAV_BULLET, 1);
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#endif
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}
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/*
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* Entity action
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*
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* ASM 1883, 0F97
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*/
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void
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e_bullet_action(UNUSED(U8 e))
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{
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/* move bullet */
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E_BULLET_ENT.x += e_bullet_offsx;
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if (E_BULLET_ENT.x <= -0x10 || E_BULLET_ENT.x > 0xe8) {
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/* out: deactivate */
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E_BULLET_ENT.n = 0;
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}
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else {
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/* update bullet center coordinates */
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e_bullet_xc = E_BULLET_ENT.x + 0x0c;
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e_bullet_yc = E_BULLET_ENT.y + 0x05;
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if (map_eflg[map_map[e_bullet_yc >> 3][e_bullet_xc >> 3]] &
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MAP_EFLG_SOLID) {
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/* hit something: deactivate */
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E_BULLET_ENT.n = 0;
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}
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}
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}
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/* eof */
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