/******************************************************************************* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and Jerremy Koot (jkoot@snes9x.com) (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net) (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net), funkyass (funkyass@spam.shaw.ca), Joel Yliluoma (http://iki.fi/bisqwit/) Kris Bleakley (codeviolation@hotmail.com), Matthew Kendora, Nach (n-a-c-h@users.sourceforge.net), Peter Bortas (peter@bortas.org) and zones (kasumitokoduck@yahoo.com) C4 x86 assembler and some C emulation code (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com), _Demo_ (_demo_@zsnes.com), and Nach C4 C++ code (c) Copyright 2003 Brad Jorsch DSP-1 emulator code (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson, John Weidman, neviksti (neviksti@hotmail.com), Kris Bleakley, Andreas Naive DSP-2 emulator code (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and Lord Nightmare (lord_nightmare@users.sourceforge.net OBC1 emulator code (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and Kris Bleakley Ported from x86 assembler to C by sanmaiwashi SPC7110 and RTC C++ emulator code (c) Copyright 2002 Matthew Kendora with research by zsKnight, John Weidman, and Dark Force S-DD1 C emulator code (c) Copyright 2003 Brad Jorsch with research by Andreas Naive and John Weidman S-RTC C emulator code (c) Copyright 2001 John Weidman ST010 C++ emulator code (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora Super FX x86 assembler emulator code (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault Super FX C emulator code (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman SH assembler code partly based on x86 assembler code (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) Specific ports contains the works of other authors. See headers in individual files. Snes9x homepage: http://www.snes9x.com Permission to use, copy, modify and distribute Snes9x in both binary and source form, for non-commercial purposes, is hereby granted without fee, providing that this license information and copyright notice appear with all copies and any derived work. This software is provided 'as-is', without any express or implied warranty. In no event shall the authors be held liable for any damages arising from the use of this software. Snes9x is freeware for PERSONAL USE only. Commercial users should seek permission of the copyright holders first. Commercial use includes charging money for Snes9x or software derived from Snes9x. The copyright holders request that bug fixes and improvements to the code should be forwarded to them so everyone can benefit from the modifications in future versions. Super NES and Super Nintendo Entertainment System are trademarks of Nintendo Co., Limited and its subsidiary companies. *******************************************************************************/ #include #include #include "c4.h" #include "memmap.h" extern "C" { short C4WFXVal; short C4WFYVal; short C4WFZVal; short C4WFX2Val; short C4WFY2Val; short C4WFDist; short C4WFScale; static double tanval; static double c4x, c4y, c4z; static double c4x2, c4y2, c4z2; void C4TransfWireFrame () { c4x = (double) C4WFXVal; c4y = (double) C4WFYVal; c4z = (double) C4WFZVal - 0x95; // Rotate X tanval = -(double) C4WFX2Val * 3.14159265 * 2 / 128; c4y2 = c4y * cos (tanval) - c4z * sin (tanval); c4z2 = c4y * sin (tanval) + c4z * cos (tanval); // Rotate Y tanval = -(double)C4WFY2Val*3.14159265*2/128; c4x2 = c4x * cos (tanval) + c4z2 * sin (tanval); c4z = c4x * - sin (tanval) + c4z2 * cos (tanval); // Rotate Z tanval = -(double) C4WFDist * 3.14159265*2 / 128; c4x = c4x2 * cos (tanval) - c4y2 * sin (tanval); c4y = c4x2 * sin (tanval) + c4y2 * cos (tanval); // Scale C4WFXVal = (short) (c4x*(double)C4WFScale/(0x90*(c4z+0x95))*0x95); C4WFYVal = (short) (c4y*(double)C4WFScale/(0x90*(c4z+0x95))*0x95); } void C4TransfWireFrame2 () { c4x = (double)C4WFXVal; c4y = (double)C4WFYVal; c4z = (double)C4WFZVal; // Rotate X tanval = -(double) C4WFX2Val * 3.14159265 * 2 / 128; c4y2 = c4y * cos (tanval) - c4z * sin (tanval); c4z2 = c4y * sin (tanval) + c4z * cos (tanval); // Rotate Y tanval = -(double) C4WFY2Val * 3.14159265 * 2 / 128; c4x2 = c4x * cos (tanval) + c4z2 * sin (tanval); c4z = c4x * -sin (tanval) + c4z2 * cos (tanval); // Rotate Z tanval = -(double)C4WFDist * 3.14159265 * 2 / 128; c4x = c4x2 * cos (tanval) - c4y2 * sin (tanval); c4y = c4x2 * sin (tanval) + c4y2 * cos (tanval); // Scale C4WFXVal =(short)(c4x * (double)C4WFScale / 0x100); C4WFYVal =(short)(c4y * (double)C4WFScale / 0x100); } void C4CalcWireFrame () { C4WFXVal = C4WFX2Val - C4WFXVal; C4WFYVal = C4WFY2Val - C4WFYVal; if (abs (C4WFXVal) > abs (C4WFYVal)) { C4WFDist = abs (C4WFXVal) + 1; C4WFYVal = (short) (256 * (double) C4WFYVal / abs (C4WFXVal)); if (C4WFXVal < 0) C4WFXVal = -256; else C4WFXVal = 256; } else { if (C4WFYVal != 0) { C4WFDist = abs(C4WFYVal)+1; C4WFXVal = (short) (256 * (double)C4WFXVal / abs (C4WFYVal)); if (C4WFYVal < 0) C4WFYVal = -256; else C4WFYVal = 256; } else C4WFDist = 0; } } short C41FXVal; short C41FYVal; short C41FAngleRes; short C41FDist; short C41FDistVal; void C4Op1F () { if (C41FXVal == 0) { if (C41FYVal > 0) C41FAngleRes = 0x80; else C41FAngleRes = 0x180; } else { tanval = (double) C41FYVal / C41FXVal; C41FAngleRes = (short) (atan (tanval) / (3.141592675 * 2) * 512); C41FAngleRes = C41FAngleRes; if (C41FXVal< 0) C41FAngleRes += 0x100; C41FAngleRes &= 0x1FF; } } void C4Op15() { tanval = sqrt ((double) C41FYVal * C41FYVal + (double) C41FXVal * C41FXVal); C41FDist = (short) tanval; } void C4Op0D() { tanval = sqrt ((double) C41FYVal * C41FYVal + (double) C41FXVal * C41FXVal); tanval = C41FDistVal / tanval; C41FYVal = (short) (C41FYVal * tanval * 0.99); C41FXVal = (short) (C41FXVal * tanval * 0.98); } #ifdef ZSNES_C4 void C4LoaDMem(char *C4RAM) { memmove(C4RAM+(READ_WORD(C4RAM+0x1f45)&0x1fff), S9xGetMemPointer(READ_3WORD(C4RAM+0x1f40)), READ_WORD(C4RAM+0x1f43)); } #endif }//end extern C