jsAtari/src/input.js at master · vagucs/jsAtari · GitHub

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/*

jsAtari
Copyright (C) 2011 Jeremy Neiman

This file is part of jsAtari.

jsAtari 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 3 of the License, or
(at your option) any later version.

jsAtari 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 jsAtari.  If not, see <http://www.gnu.org/licenses/>.

*/


input =
{
	keys:
	{
		TRIGGER: 32,
		LEFT: 37,
		UP: 38,
		RIGHT: 39,
		DOWN: 40,
		RESET: 48,
		SELECT: 49,
		COLOR: 51,
		P0DIF: 54,
		P1DIF: 55,
	},

	onkeydown: function(e)
	{
		var keycode;

		if (window.event)
			keycode = window.event.keyCode;
		else if (e)
			keycode = e.which;

		if (keycode == input.keys.TRIGGER)
		{
			tia.INPT4 = 0;
			tia.ram_changed = true;
		}
		else if (keycode == input.keys.LEFT)
		{
			pia.ram[pia.reg.SWCHA] = util.D6_w(pia.ram[pia.reg.SWCHA], 0);
		}
		else if (keycode == input.keys.UP)
		{
			pia.ram[pia.reg.SWCHA] = util.D4_w(pia.ram[pia.reg.SWCHA], 0);
		}
		else if (keycode == input.keys.RIGHT)
		{
			pia.ram[pia.reg.SWCHA] = util.D7_w(pia.ram[pia.reg.SWCHA], 0);
		}
		else if (keycode == input.keys.DOWN)
		{
			pia.ram[pia.reg.SWCHA] = util.D5_w(pia.ram[pia.reg.SWCHA], 0);
		}
	},

	onkeyup: function(e)
	{
		var keycode;

		if (window.event)
			keycode = window.event.keyCode;
		else if (e)
			keycode = e.which;

		if (keycode == input.keys.TRIGGER)
		{
			tia.INPT4 = 128;
			tia.ram_changed = true;
		}
		else if (keycode == input.keys.LEFT)
		{
			pia.ram[pia.reg.SWCHA] = util.D6_w(pia.ram[pia.reg.SWCHA], 1);
		}
		else if (keycode == input.keys.UP)
		{
			pia.ram[pia.reg.SWCHA] = util.D4_w(pia.ram[pia.reg.SWCHA], 1);
		}
		else if (keycode == input.keys.RIGHT)
		{
			pia.ram[pia.reg.SWCHA] = util.D7_w(pia.ram[pia.reg.SWCHA], 1);
		}
		else if (keycode == input.keys.DOWN)
		{
			pia.ram[pia.reg.SWCHA] = util.D5_w(pia.ram[pia.reg.SWCHA], 1);
		}
	},

	onkeypress: function(e)
	{
		var keycode;

		if (window.event)
			keycode = window.event.keyCode;
		else if (e)
			keycode = e.which;

		if (keycode == input.keys.COLOR)
		{
			pia.ram[pia.reg.SWCHB] ^= 8;
			debug(pia.ram[pia.reg.SWCHB].toString(2));
		}
	},

	bind_input: function(element)
	{
		element.onkeydown = input.onkeydown;
		element.onkeyup = input.onkeyup;
		element.onkeypress = input.onkeypress;
	},

	__init__: function(element)
	{
		pia.ram[pia.reg.SWCHA] = 0xff;
		pia.ram[pia.reg.SWCHB] = 11;
		input.bind_input(element);
	}
};