154 lines
2.8 KiB
C
154 lines
2.8 KiB
C
/*
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* xrick/src/e_bomb.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_bomb.h"
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#include "e_rick.h"
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/*
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* public vars (for performance reasons)
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*/
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U8 e_bomb_lethal;
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U8 e_bomb_xc;
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U16 e_bomb_yc;
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/*
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* private vars
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*/
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U8 e_bomb_ticker;
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/*
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* Bomb hit test
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*
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* ASM 11CD
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* returns: TRUE/hit, FALSE/not
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*/
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U8 e_bomb_hit(U8 e)
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{
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if (ent_ents[e].x > (E_BOMB_ENT.x >= 0xE0 ? 0xFF : E_BOMB_ENT.x + 0x20))
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return FALSE;
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if (ent_ents[e].x + ent_ents[e].w < (E_BOMB_ENT.x > 0x04 ? E_BOMB_ENT.x - 0x04 : 0))
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return FALSE;
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if (ent_ents[e].y > (E_BOMB_ENT.y + 0x1D))
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return FALSE;
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if (ent_ents[e].y + ent_ents[e].h < (E_BOMB_ENT.y > 0x0004 ? E_BOMB_ENT.y - 0x0004 : 0))
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return FALSE;
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return TRUE;
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}
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/*
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* Initialize bomb
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*/
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void e_bomb_init(U16 x, U16 y)
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{
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E_BOMB_ENT.n = 0x03;
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E_BOMB_ENT.x = x;
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E_BOMB_ENT.y = y;
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e_bomb_ticker = E_BOMB_TICKER;
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e_bomb_lethal = FALSE;
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/*
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* Atari ST dynamite sprites are not centered the
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* way IBM PC sprites were ... need to adjust things a little bit
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*/
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#ifdef GFXST
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E_BOMB_ENT.x += 4;
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E_BOMB_ENT.y += 5;
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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 18CA
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*/
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void
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e_bomb_action(UNUSED(U8 e))
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{
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/* tick */
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e_bomb_ticker--;
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if (e_bomb_ticker == 0)
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{
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/*
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* end: deactivate
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*/
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E_BOMB_ENT.n = 0;
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e_bomb_lethal = FALSE;
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}
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else if (e_bomb_ticker >= 0x0A)
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{
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/*
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* ticking
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*/
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#ifdef ENABLE_SOUND
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if ((e_bomb_ticker & 0x03) == 0x02)
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syssnd_play(WAV_BOMBSHHT, 1);
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#endif
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#ifdef GFXST
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/* ST bomb sprites sequence is longer */
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if (e_bomb_ticker < 40)
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E_BOMB_ENT.sprite = 0x99 + 19 - (e_bomb_ticker >> 1);
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else
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#endif
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E_BOMB_ENT.sprite = (e_bomb_ticker & 0x01) ? 0x23 : 0x22;
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}
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else if (e_bomb_ticker == 0x09)
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{
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/*
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* explode
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*/
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#ifdef ENABLE_SOUND
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syssnd_play(WAV_EXPLODE, 1);
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#endif
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#ifdef GFXPC
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E_BOMB_ENT.sprite = 0x24 + 4 - (e_bomb_ticker >> 1);
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#endif
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#ifdef GFXST
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/* See above: fixing alignment */
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E_BOMB_ENT.x -= 4;
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E_BOMB_ENT.y -= 5;
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E_BOMB_ENT.sprite = 0xa8 + 4 - (e_bomb_ticker >> 1);
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#endif
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e_bomb_xc = E_BOMB_ENT.x + 0x0C;
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e_bomb_yc = E_BOMB_ENT.y + 0x000A;
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e_bomb_lethal = TRUE;
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if (e_bomb_hit(E_RICK_NO))
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e_rick_gozombie();
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}
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else
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{
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/*
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* exploding
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*/
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#ifdef GFXPC
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E_BOMB_ENT.sprite = 0x24 + 4 - (e_bomb_ticker >> 1);
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#endif
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#ifdef GFXST
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E_BOMB_ENT.sprite = 0xa8 + 4 - (e_bomb_ticker >> 1);
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#endif
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/* exploding, hence lethal */
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if (e_bomb_hit(E_RICK_NO))
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e_rick_gozombie();
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}
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}
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/* eof */
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