| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Xodnizel |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <string.h> |
| 22 | #include <stdlib.h> |
| 23 | #include "share.h" |
| 24 | |
| 25 | typedef struct { |
| 26 | uint32 mzx,mzb; |
| 27 | uint32 readbit; |
| 28 | } ARK; |
| 29 | |
| 30 | static ARK NESArk[2]; |
| 31 | static ARK FCArk; |
| 32 | |
| 33 | static void StrobeARKFC(void) |
| 34 | { |
| 35 | FCArk.readbit=0; |
| 36 | } |
| 37 | |
| 38 | |
| 39 | static uint8 FP_FASTAPASS(2) ReadARKFC(int w,uint8 ret) |
| 40 | { |
| 41 | ret&=~2; |
| 42 | |
| 43 | if(w) |
| 44 | { |
| 45 | if(FCArk.readbit>=8) |
| 46 | ret|=2; |
| 47 | else |
| 48 | { |
| 49 | ret|=((FCArk.mzx>>(7-FCArk.readbit))&1)<<1; |
| 50 | if(!fceuindbg) |
| 51 | FCArk.readbit++; |
| 52 | } |
| 53 | } |
| 54 | else |
| 55 | ret|=FCArk.mzb<<1; |
| 56 | return(ret); |
| 57 | } |
| 58 | |
| 59 | static uint32 FixX(uint32 x) |
| 60 | { |
| 61 | x=98+x*144/240; |
| 62 | if(x>242) x=242; |
| 63 | x=~x; |
| 64 | return(x); |
| 65 | } |
| 66 | |
| 67 | static void FP_FASTAPASS(2) UpdateARKFC(void *data, int arg) |
| 68 | { |
| 69 | uint32 *ptr=(uint32 *)data; |
| 70 | FCArk.mzx=FixX(ptr[0]); |
| 71 | FCArk.mzb=ptr[2]?1:0; |
| 72 | } |
| 73 | |
| 74 | static INPUTCFC ARKCFC={ReadARKFC,0,StrobeARKFC,UpdateARKFC,0,0}; |
| 75 | |
| 76 | INPUTCFC *FCEU_InitArkanoidFC(void) |
| 77 | { |
| 78 | FCArk.mzx=98; |
| 79 | FCArk.mzb=0; |
| 80 | return(&ARKCFC); |
| 81 | } |
| 82 | |
| 83 | static uint8 FP_FASTAPASS(1) ReadARK(int w) |
| 84 | { |
| 85 | uint8 ret=0; |
| 86 | |
| 87 | if(NESArk[w].readbit>=8) |
| 88 | ret|=1<<4; |
| 89 | else |
| 90 | { |
| 91 | ret|=((NESArk[w].mzx>>(7-NESArk[w].readbit))&1)<<4; |
| 92 | if(!fceuindbg) |
| 93 | NESArk[w].readbit++; |
| 94 | } |
| 95 | ret|=(NESArk[w].mzb&1)<<3; |
| 96 | return(ret); |
| 97 | } |
| 98 | |
| 99 | |
| 100 | static void FP_FASTAPASS(1) StrobeARK(int w) |
| 101 | { |
| 102 | NESArk[w].readbit=0; |
| 103 | } |
| 104 | |
| 105 | static void FP_FASTAPASS(3) UpdateARK(int w, void *data, int arg) |
| 106 | { |
| 107 | uint32 *ptr=(uint32*)data; |
| 108 | NESArk[w].mzx=FixX(ptr[0]); |
| 109 | NESArk[w].mzb=ptr[2]?1:0; |
| 110 | } |
| 111 | |
| 112 | static INPUTC ARKC={ReadARK, 0, StrobeARK, UpdateARK, 0, 0}; |
| 113 | |
| 114 | INPUTC *FCEU_InitArkanoid(int w) |
| 115 | { |
| 116 | NESArk[w].mzx=98; |
| 117 | NESArk[w].mzb=0; |
| 118 | return(&ARKC); |
| 119 | } |