c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
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 | FCArk.readbit++; |
51 | } |
52 | } |
53 | else |
54 | ret|=FCArk.mzb<<1; |
55 | return(ret); |
56 | } |
57 | |
58 | static uint32 FixX(uint32 x) |
59 | { |
60 | x=98+x*144/240; |
61 | if(x>242) x=242; |
62 | x=~x; |
63 | return(x); |
64 | } |
65 | |
66 | static void FP_FASTAPASS(2) UpdateARKFC(void *data, int arg) |
67 | { |
68 | uint32 *ptr=data; |
69 | FCArk.mzx=FixX(ptr[0]); |
70 | FCArk.mzb=ptr[2]?1:0; |
71 | } |
72 | |
73 | static INPUTCFC ARKCFC={ReadARKFC,0,StrobeARKFC,UpdateARKFC,0,0}; |
74 | |
75 | INPUTCFC *FCEU_InitArkanoidFC(void) |
76 | { |
77 | FCArk.mzx=98; |
78 | FCArk.mzb=0; |
79 | return(&ARKCFC); |
80 | } |
81 | |
82 | static uint8 FP_FASTAPASS(1) ReadARK(int w) |
83 | { |
84 | uint8 ret=0; |
85 | |
86 | if(NESArk[w].readbit>=8) |
87 | ret|=1<<4; |
88 | else |
89 | { |
90 | ret|=((NESArk[w].mzx>>(7-NESArk[w].readbit))&1)<<4; |
91 | NESArk[w].readbit++; |
92 | } |
93 | ret|=(NESArk[w].mzb&1)<<3; |
94 | return(ret); |
95 | } |
96 | |
97 | |
98 | static void FP_FASTAPASS(1) StrobeARK(int w) |
99 | { |
100 | NESArk[w].readbit=0; |
101 | } |
102 | |
103 | static void FP_FASTAPASS(3) UpdateARK(int w, void *data, int arg) |
104 | { |
105 | uint32 *ptr=data; |
106 | NESArk[w].mzx=FixX(ptr[0]); |
107 | NESArk[w].mzb=ptr[2]?1:0; |
108 | } |
109 | |
110 | static INPUTC ARKC={ReadARK, 0, StrobeARK, UpdateARK, 0, 0}; |
111 | |
112 | INPUTC *FCEU_InitArkanoid(int w) |
113 | { |
114 | NESArk[w].mzx=98; |
115 | NESArk[w].mzb=0; |
116 | return(&ARKC); |
117 | } |