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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
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4 | * Copyright (C) 2002 Xodnizel |
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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> |
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22 | #include <stdlib.h> |
23 | #include "share.h" |
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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; |
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50 | if(!fceuindbg) |
51 | FCArk.readbit++; |
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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 | { |
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69 | uint32 *ptr=(uint32 *)data; |
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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; |
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92 | if(!fceuindbg) |
93 | NESArk[w].readbit++; |
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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 | { |
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107 | uint32 *ptr=(uint32*)data; |
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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 | } |