| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 1998 BERO |
| 5 | * Copyright (C) 2002 Ben Parnell |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | #include <string.h> |
| 22 | #include "types.h" |
| 23 | #include "x6502.h" |
| 24 | |
| 25 | #include "fce.h" |
| 26 | #include "sound.h" |
| 27 | #include "netplay.h" |
| 28 | #include "svga.h" |
| 29 | |
| 30 | #include "input.h" |
| 31 | #include "movie.h" |
| 32 | |
| 33 | #ifdef DEBUG_ASM_6502 |
| 34 | extern int cpu_repeat; |
| 35 | extern int cpu_lastval; |
| 36 | #endif |
| 37 | |
| 38 | extern INPUTC *FCEU_InitZapper(int w); |
| 39 | extern INPUTC *FCEU_InitPowerpad(int w); |
| 40 | extern INPUTC *FCEU_InitArkanoid(int w); |
| 41 | |
| 42 | extern INPUTCFC *FCEU_InitArkanoidFC(void); |
| 43 | extern INPUTCFC *FCEU_InitSpaceShadow(void); |
| 44 | extern INPUTCFC *FCEU_InitFKB(void); |
| 45 | static uint8 joy_readbit[2]; |
| 46 | static uint16 joy[4]={0,0,0,0}; |
| 47 | |
| 48 | extern int coinon; |
| 49 | |
| 50 | static int FSDisable=0; /* Set to 1 if NES-style four-player adapter is disabled. */ |
| 51 | static int JPAttrib[2]={0,0}; |
| 52 | static int JPType[2]={0,0}; |
| 53 | static void *InputDataPtr[2]; |
| 54 | |
| 55 | static int JPAttribFC=0; |
| 56 | static int JPTypeFC=0; |
| 57 | static void *InputDataPtrFC; |
| 58 | |
| 59 | void (*InputScanlineHook)(uint8 *buf, int line); |
| 60 | |
| 61 | static INPUTC DummyJPort={0,0,0,0,0}; |
| 62 | static INPUTC *JPorts[2]={&DummyJPort,&DummyJPort}; |
| 63 | static INPUTCFC *FCExp=0; |
| 64 | |
| 65 | static uint8 FP_FASTAPASS(1) ReadGPVS(int w) |
| 66 | { |
| 67 | uint8 ret=0; |
| 68 | |
| 69 | if(joy_readbit[w]>=8) |
| 70 | ret=1; |
| 71 | else |
| 72 | { |
| 73 | ret = ((joy[w]>>(joy_readbit[w]))&1); |
| 74 | joy_readbit[w]++; |
| 75 | } |
| 76 | return ret; |
| 77 | } |
| 78 | |
| 79 | static uint8 FP_FASTAPASS(1) ReadGP(int w) |
| 80 | { |
| 81 | uint8 ret; |
| 82 | //if(JoyMulti) |
| 83 | //{ |
| 84 | //ret = ((joy[w]>>(joy_readbit[w]))&1)| |
| 85 | //(((joy[w]>>(joy_readbit[w]+8))&1)<<1); |
| 86 | //if(joy_readbit[w]>8) ret=0; |
| 87 | //} |
| 88 | ret = ((joy[w]>>(joy_readbit[w]))&1); |
| 89 | if(FSDisable) |
| 90 | { |
| 91 | if(joy_readbit[w]>=8) ret|=1; |
| 92 | } |
| 93 | else |
| 94 | { |
| 95 | if(joy_readbit[w]==19-w) ret|=1; |
| 96 | } |
| 97 | joy_readbit[w]++; |
| 98 | return ret; |
| 99 | } |
| 100 | |
| 101 | static DECLFR(JPRead) |
| 102 | { |
| 103 | uint8 ret=0; |
| 104 | |
| 105 | #ifdef DEBUG_ASM_6502 |
| 106 | if (cpu_repeat) return cpu_lastval; |
| 107 | #endif |
| 108 | if(JPorts[A&1]->Read) |
| 109 | ret|=JPorts[A&1]->Read(A&1); |
| 110 | |
| 111 | if(FCExp) |
| 112 | if(FCExp->Read) |
| 113 | ret=FCExp->Read(A&1,ret); |
| 114 | |
| 115 | ret|=X.DB&0xC0; |
| 116 | #ifdef DEBUG_ASM_6502 |
| 117 | // cpu_lastval=ret; |
| 118 | #endif |
| 119 | return(ret); |
| 120 | } |
| 121 | |
| 122 | static DECLFW(B4016) |
| 123 | { |
| 124 | if(FCExp) |
| 125 | if(FCExp->Write) |
| 126 | FCExp->Write(V&7); |
| 127 | |
| 128 | if(JPorts[0]->Write) |
| 129 | JPorts[0]->Write(V&1); |
| 130 | if(JPorts[1]->Write) |
| 131 | JPorts[1]->Write(V&1); |
| 132 | |
| 133 | if((PSG[0x16]&1) && (!(V&1))) |
| 134 | { |
| 135 | /* This strobe code is just for convenience. If it were |
| 136 | with the code in input / *.c, it would more accurately represent |
| 137 | what's really going on. But who wants accuracy? ;) |
| 138 | Seriously, though, this shouldn't be a problem. |
| 139 | */ |
| 140 | if(JPorts[0]->Strobe) |
| 141 | JPorts[0]->Strobe(0); |
| 142 | if(JPorts[1]->Strobe) |
| 143 | JPorts[1]->Strobe(1); |
| 144 | if(FCExp) |
| 145 | if(FCExp->Strobe) |
| 146 | FCExp->Strobe(); |
| 147 | } |
| 148 | PSG[0x16]=V; |
| 149 | } |
| 150 | |
| 151 | static void FP_FASTAPASS(1) StrobeGP(int w) |
| 152 | { |
| 153 | joy_readbit[w]=0; |
| 154 | } |
| 155 | |
| 156 | static INPUTC GPC={ReadGP,0,StrobeGP,0,0,0}; |
| 157 | static INPUTC GPCVS={ReadGPVS,0,StrobeGP,0,0,0}; |
| 158 | |
| 159 | void DrawInput(uint8 *buf) |
| 160 | { |
| 161 | int x; |
| 162 | |
| 163 | for(x=0;x<2;x++) |
| 164 | if(JPorts[x]->Draw) |
| 165 | JPorts[x]->Draw(x,buf,JPAttrib[x]); |
| 166 | if(FCExp) |
| 167 | if(FCExp->Draw) |
| 168 | FCExp->Draw(buf,JPAttribFC); |
| 169 | } |
| 170 | |
| 171 | void UpdateInput(void) |
| 172 | { |
| 173 | int x; |
| 174 | |
| 175 | for(x=0;x<2;x++) |
| 176 | { |
| 177 | switch(JPType[x]) |
| 178 | { |
| 179 | case SI_GAMEPAD: |
| 180 | if(!x) joy[0]=*(uint16 *)InputDataPtr[0]; |
| 181 | else joy[1]=*(uint16 *)InputDataPtr[1]; |
| 182 | break; |
| 183 | default: |
| 184 | if(JPorts[x]->Update) |
| 185 | JPorts[x]->Update(x,InputDataPtr[x],JPAttrib[x]); |
| 186 | break; |
| 187 | } |
| 188 | } |
| 189 | if(FCExp) |
| 190 | if(FCExp->Update) |
| 191 | FCExp->Update(InputDataPtrFC,JPAttribFC); |
| 192 | |
| 193 | if(FCEUGameInfo.type==GIT_VSUNI) |
| 194 | { |
| 195 | uint16 t=joy[0]; |
| 196 | joy[0]=(joy[0]&0xC)|(joy[1]&0xF3); |
| 197 | joy[1]=(joy[1]&0xC)|(t&0xF3); |
| 198 | if(coinon) coinon--; |
| 199 | } |
| 200 | #ifdef NETWORK |
| 201 | if(netplay) NetplayUpdate(&joy[0],&joy[1]); |
| 202 | #endif |
| 203 | if (current < 0) FCEUMOV_AddJoy(joy); |
| 204 | FlushCommandQueue(); |
| 205 | } |
| 206 | |
| 207 | static DECLFR(VSUNIRead0) |
| 208 | { |
| 209 | uint8 ret=0; |
| 210 | |
| 211 | if(JPorts[0]->Read) |
| 212 | ret|=(JPorts[0]->Read(0))&1; |
| 213 | |
| 214 | ret|=(vsdip&3)<<3; |
| 215 | if(coinon) |
| 216 | ret|=0x4; |
| 217 | return ret; |
| 218 | } |
| 219 | |
| 220 | static DECLFR(VSUNIRead1) |
| 221 | { |
| 222 | uint8 ret=0; |
| 223 | |
| 224 | if(JPorts[1]->Read) |
| 225 | ret|=(JPorts[1]->Read(1))&1; |
| 226 | ret|=vsdip&0xFC; |
| 227 | return ret; |
| 228 | } |
| 229 | |
| 230 | static void SLHLHook(uint8 *buf, int line) |
| 231 | { |
| 232 | int x; |
| 233 | |
| 234 | for(x=0;x<2;x++) |
| 235 | if(JPorts[x]->SLHook) |
| 236 | JPorts[x]->SLHook(x,buf,line); |
| 237 | if(FCExp) |
| 238 | if(FCExp->SLHook) |
| 239 | FCExp->SLHook(buf,line); |
| 240 | } |
| 241 | |
| 242 | static void CheckSLHook(void) |
| 243 | { |
| 244 | InputScanlineHook=0; |
| 245 | if(JPorts[0]->SLHook || JPorts[1]->SLHook) |
| 246 | InputScanlineHook=SLHLHook; |
| 247 | if(FCExp) |
| 248 | if(FCExp->SLHook) |
| 249 | InputScanlineHook=SLHLHook; |
| 250 | } |
| 251 | |
| 252 | static void FASTAPASS(1) SetInputStuff(int x) |
| 253 | { |
| 254 | switch(JPType[x]) |
| 255 | { |
| 256 | case SI_GAMEPAD: |
| 257 | if(FCEUGameInfo.type==GIT_VSUNI) |
| 258 | JPorts[x]=&GPCVS; |
| 259 | else |
| 260 | JPorts[x]=&GPC; |
| 261 | break; |
| 262 | case SI_ARKANOID:JPorts[x]=FCEU_InitArkanoid(x);break; |
| 263 | case SI_ZAPPER:JPorts[x]=FCEU_InitZapper(x);break; |
| 264 | case SI_POWERPAD:JPorts[x]=FCEU_InitPowerpad(x);break; |
| 265 | case SI_NONE:JPorts[x]=&DummyJPort;break; |
| 266 | } |
| 267 | |
| 268 | CheckSLHook(); |
| 269 | } |
| 270 | |
| 271 | static uint8 F4ReadBit[2]; |
| 272 | static void StrobeFami4(void) |
| 273 | { |
| 274 | F4ReadBit[0]=F4ReadBit[1]=0; |
| 275 | } |
| 276 | |
| 277 | static uint8 FP_FASTAPASS(2) ReadFami4(int w, uint8 ret) |
| 278 | { |
| 279 | ret&=1; |
| 280 | |
| 281 | ret |= ((joy[w]>>(F4ReadBit[w]+8))&1)<<1; |
| 282 | if(F4ReadBit[w]>=8) ret|=2; |
| 283 | else F4ReadBit[w]++; |
| 284 | |
| 285 | return(ret); |
| 286 | } |
| 287 | |
| 288 | static INPUTCFC FAMI4C={ReadFami4,0,StrobeFami4,0,0,0}; |
| 289 | static void SetInputStuffFC(void) |
| 290 | { |
| 291 | switch(JPTypeFC) |
| 292 | { |
| 293 | case SIFC_NONE:FCExp=0;break; |
| 294 | case SIFC_ARKANOID:FCExp=FCEU_InitArkanoidFC();break; |
| 295 | case SIFC_SHADOW:FCExp=FCEU_InitSpaceShadow();break; |
| 296 | case SIFC_4PLAYER:FCExp=&FAMI4C;memset(&F4ReadBit,0,sizeof(F4ReadBit));break; |
| 297 | case SIFC_FKB:FCExp=FCEU_InitFKB();break; |
| 298 | } |
| 299 | CheckSLHook(); |
| 300 | } |
| 301 | |
| 302 | // VS Unisystem code called after SetInputMap() hooks B4016. Need to |
| 303 | // rewrite code to make this more sane? |
| 304 | |
| 305 | void InitializeInput(void) |
| 306 | { |
| 307 | memset(joy_readbit,0,sizeof(joy_readbit)); |
| 308 | memset(joy,0,sizeof(joy)); |
| 309 | |
| 310 | if(FCEUGameInfo.type==GIT_VSUNI) |
| 311 | { |
| 312 | SetReadHandler(0x4016,0x4016,VSUNIRead0); |
| 313 | SetReadHandler(0x4017,0x4017,VSUNIRead1); |
| 314 | } |
| 315 | else |
| 316 | SetReadHandler(0x4016,0x4017,JPRead); |
| 317 | SetWriteHandler(0x4016,0x4016,B4016); |
| 318 | |
| 319 | SetInputStuff(0); |
| 320 | SetInputStuff(1); |
| 321 | SetInputStuffFC(); |
| 322 | } |
| 323 | |
| 324 | void FCEUI_SetInput(int port, int type, void *ptr, int attrib) |
| 325 | { |
| 326 | JPAttrib[port]=attrib; |
| 327 | JPType[port]=type; |
| 328 | InputDataPtr[port]=ptr; |
| 329 | SetInputStuff(port); |
| 330 | } |
| 331 | |
| 332 | void FCEUI_DisableFourScore(int s) |
| 333 | { |
| 334 | FSDisable=s; |
| 335 | } |
| 336 | |
| 337 | void FCEUI_SetInputFC(int type, void *ptr, int attrib) |
| 338 | { |
| 339 | JPAttribFC=attrib; |
| 340 | JPTypeFC=type; |
| 341 | InputDataPtrFC=ptr; |
| 342 | SetInputStuffFC(); |
| 343 | } |