nes-proj/backyard/platform/c64/ctk/ctk-mouse-arch.c

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/*
* Copyright (c) 2003, Adam Dunkels.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the "ctk" console GUI toolkit for cc65
*
* $Id: ctk-mouse-arch.c,v 1.1 2007/05/23 23:11:27 oliverschmidt Exp $
*
*/
#include "ctk/ctk.h"
#include "ctk-mouse.h"
#include "ctk-conf.h"
#if CTK_CONF_MOUSE_SUPPORT
unsigned short ctk_mouse_joyy, ctk_mouse_joyx;
unsigned char ctk_mouse_firebutton;
extern void ctk_mouse_asm_irq(void);
/*-----------------------------------------------------------------------------------*/
#pragma optimize(push, off)
void
ctk_mouse_init(void)
{
/* Place mouse pointer at the middle of the screen. */
ctk_mouse_joyx = 160;
ctk_mouse_joyy = 100;
/* Setup and start IRQ */
asm("sei");
asm("lda #<%v", ctk_mouse_asm_irq);
asm("sta $0314");
asm("lda #>%v", ctk_mouse_asm_irq);
asm("sta $0315");
asm("cli");
}
#pragma optimize(pop)
/*-----------------------------------------------------------------------------------*/
unsigned short
ctk_mouse_x(void)
{
if(ctk_mouse_joyx >= 342) {
ctk_mouse_joyx = 0;
} else if(ctk_mouse_joyx >= 320) {
ctk_mouse_joyx = 319;
}
return ctk_mouse_joyx;
}
/*-----------------------------------------------------------------------------------*/
unsigned short
ctk_mouse_y(void)
{
return ctk_mouse_joyy;
}
/*-----------------------------------------------------------------------------------*/
unsigned char
ctk_mouse_button(void)
{
return ctk_mouse_firebutton;
}
/*-----------------------------------------------------------------------------------*/
unsigned char
ctk_mouse_xtoc(unsigned short x)
{
return x / 8;
}
/*-----------------------------------------------------------------------------------*/
unsigned char
ctk_mouse_ytoc(unsigned short y)
{
return y / 8;
}
/*-----------------------------------------------------------------------------------*/
#pragma optimize(push, off)
void
ctk_mouse_hide(void)
{
/* Turn off sprites 0 and 1 */
asm("lda #0");
asm("sta $d015");
}
#pragma optimize(pop)
/*-----------------------------------------------------------------------------------*/
#pragma optimize(push, off)
void
ctk_mouse_show(void)
{
/* Turn on sprites 0 and 1 */
asm("lda #3");
asm("sta $d015");
}
#pragma optimize(pop)
/*-----------------------------------------------------------------------------------*/
#endif /* CTK_CONF_MOUSE_SUPPORT */