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Initial commit - http://sourceforge.net/p/fceumm/code/160/

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twinaphex
2014-03-30 22:15:17 +02:00
commit 7e6caac57d
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src/input/mouse.c Normal file
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/* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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;
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 uint8 FP_FASTAPASS(1) ReadMOUSE(int w) {
uint8 ret = 0;
if (Mouse.readbit >= 8)
ret |= 1;
else {
ret |= (Mouse.data >> Mouse.readbit) & 1;
#ifdef FCEUDEF_DEBUGGER
if (!fceuindbg)
#endif
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);
}