| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2003 Xodnizel |
| 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 "share.h" |
| 23 | |
| 24 | static uint8 OKValR,LastWR; |
| 25 | static uint32 OKData; |
| 26 | static uint32 OKX,OKY,OKB; |
| 27 | |
| 28 | static uint8 FP_FASTAPASS(2) OK_Read(int w, uint8 ret) |
| 29 | { |
| 30 | if(w) |
| 31 | { |
| 32 | ret|=OKValR; |
| 33 | } |
| 34 | return(ret); |
| 35 | } |
| 36 | |
| 37 | static void FP_FASTAPASS(1) OK_Write(uint8 V) |
| 38 | { |
| 39 | if(!(V&0x1)) |
| 40 | { |
| 41 | int32 vx,vy; |
| 42 | |
| 43 | //puts("Redo"); |
| 44 | OKValR=OKData=0; |
| 45 | |
| 46 | if(OKB) OKData|=1; |
| 47 | |
| 48 | if(OKY >= 48) |
| 49 | OKData|=2; |
| 50 | else if(OKB) OKData|=3; |
| 51 | |
| 52 | vx=OKX*240/256+8; |
| 53 | vy=OKY*256/240-12; |
| 54 | if(vy<0) vy=0; |
| 55 | if(vy>255) vy=255; |
| 56 | if(vx<0) vx=0; |
| 57 | if(vx>255) vx=255; |
| 58 | OKData |= (vx<<10) | (vy<<2); |
| 59 | } |
| 60 | else |
| 61 | { |
| 62 | if((~LastWR)&V&0x02) |
| 63 | OKData<<=1; |
| 64 | |
| 65 | if(!(V&0x2)) OKValR=0x4; |
| 66 | else |
| 67 | { |
| 68 | if(OKData&0x40000) OKValR=0; |
| 69 | else OKValR=0x8; |
| 70 | } |
| 71 | } |
| 72 | LastWR=V; |
| 73 | } |
| 74 | |
| 75 | static void FP_FASTAPASS(2) OK_Update(void *data, int arg) |
| 76 | { |
| 77 | //puts("Sync"); |
| 78 | OKX=((uint32*)data)[0]; |
| 79 | OKY=((uint32*)data)[1]; |
| 80 | OKB=((uint32*)data)[2]; |
| 81 | } |
| 82 | |
| 83 | static void FP_FASTAPASS(2) DrawOeka(uint8 *buf, int arg) |
| 84 | { |
| 85 | if(arg && OKY<44) |
| 86 | FCEU_DrawCursor(buf, OKX, OKY); |
| 87 | } |
| 88 | |
| 89 | static INPUTCFC OekaKids={OK_Read,OK_Write,0,OK_Update,0,DrawOeka}; |
| 90 | |
| 91 | INPUTCFC *FCEU_InitOekaKids(void) |
| 92 | { |
| 93 | OKValR=0; |
| 94 | return(&OekaKids); |
| 95 | } |