| 1 | \r |
| 2 | #include "stdafx.h"\r |
| 3 | \r |
| 4 | TCHAR RomName[260]={0};\r |
| 5 | static unsigned char *RomData=NULL;\r |
| 6 | static unsigned int RomSize=0;\r |
| 7 | \r |
| 8 | static unsigned int LastSecond=0;\r |
| 9 | static int FramesDone=0;\r |
| 10 | static int FramesPerSecond=60;\r |
| 11 | \r |
| 12 | struct Target Targ;\r |
| 13 | \r |
| 14 | static int TargetInit()\r |
| 15 | {\r |
| 16 | RECT rect={0,0,0,0};\r |
| 17 | int height=0;\r |
| 18 | \r |
| 19 | memset(&Targ,0,sizeof(Targ));\r |
| 20 | \r |
| 21 | height=168;\r |
| 22 | \r |
| 23 | ClientToScreen(FrameWnd,&Targ.point);\r |
| 24 | \r |
| 25 | GetClientRect(FrameWnd,&rect);\r |
| 26 | // Find out where the top of the screen should go:\r |
| 27 | rect.top=(rect.bottom-height)>>1;\r |
| 28 | if (rect.top<0) rect.top=0;\r |
| 29 | rect.bottom=rect.top+height;\r |
| 30 | \r |
| 31 | Targ.view=rect; // Save the view rectangle (client coordinates)\r |
| 32 | \r |
| 33 | Targ.offset=Targ.view.top+Targ.point.y;\r |
| 34 | \r |
| 35 | return 0;\r |
| 36 | }\r |
| 37 | \r |
| 38 | static int TargetUpdate()\r |
| 39 | {\r |
| 40 | // Need to repaint the view rectangle:\r |
| 41 | GetUpdateRect(FrameWnd,&Targ.update,0);\r |
| 42 | \r |
| 43 | Targ.top =Targ.update.top +Targ.point.y;\r |
| 44 | Targ.bottom=Targ.update.bottom+Targ.point.y;\r |
| 45 | \r |
| 46 | return 0;\r |
| 47 | }\r |
| 48 | \r |
| 49 | int EmulateInit()\r |
| 50 | {\r |
| 51 | FILE *f=NULL;\r |
| 52 | \r |
| 53 | EmulateExit(); // Make sure exited\r |
| 54 | \r |
| 55 | TargetInit(); // Find out where to put the screen\r |
| 56 | \r |
| 57 | PicoInit();\r |
| 58 | \r |
| 59 | // Load cartridge\r |
| 60 | f=_wfopen(RomName,L"rb"); if (f==NULL) return 1;\r |
| 61 | PicoCartLoad(f,&RomData,&RomSize);\r |
| 62 | fclose(f);\r |
| 63 | \r |
| 64 | PicoCartInsert(RomData,RomSize);\r |
| 65 | \r |
| 66 | LastSecond=GetTickCount(); FramesDone=0;\r |
| 67 | \r |
| 68 | return 0;\r |
| 69 | }\r |
| 70 | \r |
| 71 | void EmulateExit()\r |
| 72 | {\r |
| 73 | // Remove cartridge\r |
| 74 | PicoCartInsert(NULL,0);\r |
| 75 | if (RomData) free(RomData); RomData=NULL; RomSize=0;\r |
| 76 | \r |
| 77 | PicoExit();\r |
| 78 | }\r |
| 79 | \r |
| 80 | // Callback for scanline data:\r |
| 81 | static int EmulateScan(unsigned int scan,unsigned short *sdata)\r |
| 82 | {\r |
| 83 | int len=0;\r |
| 84 | unsigned short *ps=NULL,*end=NULL;\r |
| 85 | unsigned char *pd=NULL;\r |
| 86 | int xpitch=0;\r |
| 87 | \r |
| 88 | if ((scan&3)==1) return 0;\r |
| 89 | scan+=scan<<1; scan>>=2; // Reduce size to 75%\r |
| 90 | \r |
| 91 | scan+=Targ.offset;\r |
| 92 | if ((int)scan< Targ.top) return 0; // Out of range\r |
| 93 | if ((int)scan>=Targ.bottom) return 0; // Out of range\r |
| 94 | \r |
| 95 | pd=Targ.screen+scan*GXDisp.cbyPitch;\r |
| 96 | \r |
| 97 | len=240;\r |
| 98 | xpitch=GXDisp.cbxPitch;\r |
| 99 | ps=sdata; end=ps+320;\r |
| 100 | \r |
| 101 | // Reduce 4 pixels into 3\r |
| 102 | do\r |
| 103 | {\r |
| 104 | *(unsigned short *)pd=ps[0]; pd+=xpitch;\r |
| 105 | *(unsigned short *)pd=(unsigned short)((ps[1]+ps[2])>>1); pd+=xpitch;\r |
| 106 | *(unsigned short *)pd=ps[3]; pd+=xpitch;\r |
| 107 | ps+=4;\r |
| 108 | }\r |
| 109 | while (ps<end);\r |
| 110 | \r |
| 111 | return 0;\r |
| 112 | }\r |
| 113 | \r |
| 114 | static int DoFrame()\r |
| 115 | {\r |
| 116 | int pad=0,i=0,ks=0;\r |
| 117 | char map[8]={0,1,2,3,5,6,4,7}; // u/d/l/r/b/c/a/start\r |
| 118 | \r |
| 119 | for (i=0;i<8;i++)\r |
| 120 | {\r |
| 121 | ks=GetAsyncKeyState(Config.key[map[i]]);\r |
| 122 | if (ks) pad|=1<<i;\r |
| 123 | }\r |
| 124 | PicoPad[0]=pad;\r |
| 125 | \r |
| 126 | PicoFrame();\r |
| 127 | return 0;\r |
| 128 | }\r |
| 129 | \r |
| 130 | static int DrawFrame()\r |
| 131 | {\r |
| 132 | // Now final frame is drawn:\r |
| 133 | InvalidateRect(FrameWnd,&Targ.view,0);\r |
| 134 | \r |
| 135 | if (Main3800) Targ.screen=(unsigned char *)0xac0755a0; // The real 3800 screen address\r |
| 136 | else Targ.screen=(unsigned char *)GXBeginDraw();\r |
| 137 | \r |
| 138 | if (Targ.screen==NULL) return 1;\r |
| 139 | \r |
| 140 | TargetUpdate();\r |
| 141 | \r |
| 142 | PicoScan=EmulateScan; // Setup scanline callback\r |
| 143 | DoFrame();\r |
| 144 | PicoScan=NULL;\r |
| 145 | \r |
| 146 | \r |
| 147 | \r |
| 148 | if (Main3800==0) GXEndDraw();\r |
| 149 | \r |
| 150 | Targ.screen=NULL;\r |
| 151 | \r |
| 152 | ValidateRect(FrameWnd,&Targ.update);\r |
| 153 | \r |
| 154 | if (PicoStatus[0])\r |
| 155 | {\r |
| 156 | // Print the status of the 68000:\r |
| 157 | HDC hdc=GetDC(FrameWnd);\r |
| 158 | RECT rect={0,220, 240,260};\r |
| 159 | TCHAR status[128]={0};\r |
| 160 | \r |
| 161 | wsprintf(status,L"%.120S",PicoStatus);\r |
| 162 | \r |
| 163 | FillRect(hdc,&rect,(HBRUSH)GetStockObject(WHITE_BRUSH));\r |
| 164 | SetBkMode(hdc,TRANSPARENT);\r |
| 165 | \r |
| 166 | DrawText(hdc,status,lstrlen(status),&rect,0);\r |
| 167 | ReleaseDC(FrameWnd,hdc);\r |
| 168 | }\r |
| 169 | \r |
| 170 | return 0;\r |
| 171 | }\r |
| 172 | \r |
| 173 | int EmulateFrame()\r |
| 174 | {\r |
| 175 | int i=0,need=0;\r |
| 176 | int time=0,frame=0;\r |
| 177 | \r |
| 178 | if (RomData==NULL) return 1;\r |
| 179 | \r |
| 180 | // Speed throttle:\r |
| 181 | time=GetTickCount()-LastSecond; // This will be about 0-1000 ms\r |
| 182 | frame=time*FramesPerSecond/1000;\r |
| 183 | need=frame-FramesDone;\r |
| 184 | FramesDone=frame;\r |
| 185 | \r |
| 186 | if (FramesPerSecond>0)\r |
| 187 | {\r |
| 188 | // Carry over any >60 frame count to one second\r |
| 189 | while (FramesDone>=FramesPerSecond) { FramesDone-=FramesPerSecond; LastSecond+=1000; }\r |
| 190 | }\r |
| 191 | \r |
| 192 | if (need<=0) { Sleep(2); return 1; }\r |
| 193 | if (need>4) need=4; // Limit frame skipping\r |
| 194 | \r |
| 195 | for (i=0;i<need-1;i++) DoFrame(); // Frame skip if needed\r |
| 196 | \r |
| 197 | DrawFrame();\r |
| 198 | return 0;\r |
| 199 | }\r |
| 200 | \r |
| 201 | int SndRender()\r |
| 202 | {\r |
| 203 | // int p=0;\r |
| 204 | \r |
| 205 | PsndRate=WaveRate;\r |
| 206 | PsndLen=WaveLen;\r |
| 207 | PsndOut=WaveDest;\r |
| 208 | \r |
| 209 | DrawFrame();\r |
| 210 | // Convert to signed:\r |
| 211 | // for (p=0;p<PsndLen<<1;p++) PsndOut[p]+=0x8000;\r |
| 212 | \r |
| 213 | PsndRate=PsndLen=0;\r |
| 214 | PsndOut=NULL;\r |
| 215 | \r |
| 216 | return 0;\r |
| 217 | }\r |