source/code/joypad.cpp

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/*
===========================================================================
blockattack - Block Attack - Rise of the Blocks
Copyright (C) 2005-2012 Poul Sander

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, see http://www.gnu.org/licenses/

Source information and contacts persons can be found at
http://blockattack.sf.net
===========================================================================
*/

#include "joypad.h"

bool Joypad_init()
{
	if (0==SDL_InitSubSystem(SDL_INIT_JOYSTICK))
		return true;
	else
		return false;
}

Joypad_status Joypad_getStatus(SDL_Joystick *joystick)
{
	Joypad_status status;
	for (int i=0; i<NRofPADS; i++)
	{
		//cout << SDL_JoystickNumAxes(joystick) << endl;
		if (i*2>=SDL_JoystickNumAxes(joystick))
		{
			status.padDown[i]=false;
			status.padUp[i] = false;
			status.padLeft[i] = false;
			status.padRight[i] = false;
		}
		else
		{
			//cout << SDL_JoystickGetAxis(joystick,i*2+1)<< endl;
			if (SDL_JoystickGetAxis(joystick,i*2)<(-8000))
				status.padLeft[i]=1;
			else
				status.padLeft[i]=0;
			if (SDL_JoystickGetAxis(joystick,i*2)>(8000))
				status.padRight[i]=1;
			else
				status.padRight[i]=0;
			if (SDL_JoystickGetAxis(joystick,i*2+1)<(-8000))
				status.padUp[i]=1;
			else
				status.padUp[i]=0;
			if (SDL_JoystickGetAxis(joystick,i*2+1)>(8000))
				status.padDown[i]=1;
			else
				status.padDown[i]=0;
		}
	}//NRofPADS
	for (int i=0; i<NRofBUTTONS; i++)
	{
		if (i>=SDL_JoystickNumButtons(joystick))
			status.button[i]=false;
		else if (1==SDL_JoystickGetButton(joystick,i))
			status.button[i] = true;
		else
			status.button[i] = false;
	}
	return status;
}

Joypad::Joypad()
{
	up=false;
	down=false;
	left=false;
	right=false;
	but1=false;
	but2=false;
	upREL=true;
	downREL=true;
	leftREL=true;
	rightREL=true;
	but1REL=true;
	but2REL=true;
	int joynum = 0;
	while ((SDL_JoystickOpened(joynum))&&(joynum<Joypad_number))
		joynum++;
	if (joynum>=Joypad_number)
		working = false;
	else
	{
		joystick=SDL_JoystickOpen(joynum);
		if (joystick==NULL)
			working =false;
		else
			working=true;
	}
}

Joypad::~Joypad()
{
	if(working)
		SDL_JoystickClose(joystick);
}

void Joypad::update()
{
	SDL_JoystickUpdate();
	Joypad_status status = Joypad_getStatus(joystick);
	if ((upREL)&&((status.padUp[0])||(status.padUp[1])||(status.padUp[2])||(status.padUp[3])))
	{
		up=true;
		upREL=false;
	}
	else
		up=false;
	if ((downREL)&&((status.padDown[0])||(status.padDown[1])||(status.padDown[2])||(status.padDown[3])))
	{
		down=true;
		downREL=false;
	}
	else
		down=false;
	if ((leftREL)&&((status.padLeft[0])||(status.padLeft[1])||(status.padLeft[2])||(status.padLeft[3])))
	{
		left=true;
		leftREL=false;
	}
	else
		left=false;
	if ((rightREL)&&((status.padRight[0])||(status.padRight[1])||(status.padRight[2])||(status.padRight[3])))
	{
		right=true;
		rightREL=false;
	}
	else
		right=false;
	if ((but1REL)&&((status.button[0])||(status.button[2])||(status.button[4])||(status.button[6])))
	{
		but1=true;
		but1REL=false;
	}
	else
		but1=false;
	if ((but2REL)&&((status.button[1])||(status.button[3])||(status.button[5])||(status.button[7])))
	{
		but2=true;
		but2REL=false;
	}
	else
		but2=false;
	//Now testing for up
	if (!((status.padUp[0])||(status.padUp[1])||(status.padUp[2])||(status.padUp[3])))
		upREL = true;
	if (!((status.padDown[0])||(status.padDown[1])||(status.padDown[2])||(status.padDown[3])))
		downREL = true;
	if (!((status.padLeft[0])||(status.padLeft[1])||(status.padLeft[2])||(status.padLeft[3])))
		leftREL = true;
	if (!((status.padRight[0])||(status.padRight[1])||(status.padRight[2])||(status.padRight[3])))
		rightREL= true;
	if (!((status.button[0])||(status.button[2])||(status.button[4])||(status.button[6])))
		but1REL = true;
	if (!((status.button[1])||(status.button[3])||(status.button[5])||(status.button[7])))
		but2REL = true;
}