fceux/input/mouse.cpp

82 lines
2.0 KiB
C++

/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2002 Xodnizel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <string.h>
#include <stdlib.h>
#include "share.h"
typedef struct {
int32 mzx, mzy, mzxold, mzyold;
uint32 readbit;
uint32 data;
} MOUSE;
static MOUSE Mouse;
static void FP_FASTAPASS(1) StrobeMOUSE(int w)
{
Mouse.readbit=0;
}
static uint8 FP_FASTAPASS(1) ReadMOUSE(int w)
{
uint8 ret=0;
if(Mouse.readbit>=8)
ret|=1;
else
{
ret|=(Mouse.data>>Mouse.readbit)&1;
if(!fceuindbg)
Mouse.readbit++;
}
return(ret);
}
static void FP_FASTAPASS(3) UpdateMOUSE(int w, void *data, int arg)
{
uint32 *ptr=(uint32*)data;
Mouse.data=0;
Mouse.mzxold=Mouse.mzx;
Mouse.mzyold=Mouse.mzy;
Mouse.mzx=ptr[0];
Mouse.mzy=ptr[1];
Mouse.data|=ptr[2];
if((Mouse.mzxold-Mouse.mzx)>0)
Mouse.data|=0x0C;
else if((Mouse.mzxold-Mouse.mzx)<0)
Mouse.data|=0x04;
if((Mouse.mzyold-Mouse.mzy)>0)
Mouse.data|=0x30;
else if((Mouse.mzyold-Mouse.mzy)<0)
Mouse.data|=0x10;
}
static INPUTC MOUSEC={ReadMOUSE,0,StrobeMOUSE,UpdateMOUSE,0,0};
INPUTC *FCEU_InitMouse(int w)
{
Mouse.mzx=0;
Mouse.mzy=0;
Mouse.mzxold=0;
Mouse.mzyold=0;
Mouse.data=0;
return(&MOUSEC);
}