html5-plugin-canvas-gamepad

#CanvasGamepad

So you want to add a gamepad to a html5/canvas based app in html5

npm i html5-plugin-canvas-gamepad

###CanvasGamepad setup and configurations

in you html file add CanvasGamepad.setup()

/*
** this is a basic joystick and 1 button setup with start and select buttons
*/
onDeviceReady: function() {
	CanvasGamepad.setup();
}

##Configuration options

CanvasGamepad is fully customizable, from button names, colors, layout and more.

property	type	value(s)	description	example
debug	boolean	true|false	show or hide event debug info default is false	debug:false
trace	boolean	true|false	show or hide gamepad trace info default is false	trace:false
canvas	string	id of target canvas	if left out, creates a new canvas object	canvas:"game"
buttons	array	[]	collection of button objects	[{name:"x",color:"rgba(255,255,0,0.5)"}]
button	object	{name:string,color:hex|rgb|rgba}	properties for custom buttons	[{name:"x",color:"rgba(255,255,0,0.5)"},{name:"y",color:"rgba(255,0,255,0.5)"}]
layout	string	TOP_LEFT | TOP_RIGHT | BOTTOM_LEFT | BOTTOM_RIGHT	cardinal position of buttons default is BOTTOM_RIGHT	layout:"BOTTOM_RIGHT"
start	boolean	true|false	display start button default is true	start:false
select	boolean	true|false	display select button default is false	select:false
joystick	boolean	true|false	display joystick/dpad default is false	debug:false
hidden	boolean	true|false	show or hide the gamepad default is false	this can be used to hide the gamepad if you are doing something else on screen

if you are using multikey.js to extend the CanvasGamepad for keyboard access

property	type	value(s)	description	example
buttons	array	[]	collection of button objects	[{name:"x",color:"rgba(255,255,0,0.5)", key:"[keyboard letter]"}]
button	object	{name:string,color:hex|rgb|rgba}	properties for custom buttons	[{name:"x",color:"rgba(255,255,0,0.5)", key:"w"},{name:"y",color:"rgba(255,0,255,0.5)", key:"q"}]
hint	boolean	true|false	show or hidekeyboard hint default is false	hint:true

###Config examples ######default options

CanvasGamepad.setup();

######one button, custom name, no start button

CanvasGamepad.setup({
	start:false,
	buttons:[
		{name:"jump"}
	]
});

######two buttons, custom names, custom colors, with select button

CanvasGamepad.setup({
	select:true,
	buttons:[
		{name:"x",color:"rgba(255,255,0,0.5)"},
		{name:"y",color:"rgba(0,255,255,0.75)"}
	]
});

######target canvas

CanvasGamepad.setup({
	canvas:"game"
});

######change layout canvas

CanvasGamepad.setup({
	layout:"BOTTOM_LEFT"
});

######show trace & debug info

CanvasGamepad.setup({
	trace:true,
	debug:true
});

######all out everything

CanvasGamepad.setup({
	select:true,
	trace:true,
	debug:true,
	canvas:"game",
	buttons:[
		{name:"z", color:"#17861c"},
		{name:"y", color:"rgb(134, 83, 23)"},
		{name:"x", color:"rgba(204, 0, 51, 0.5)"},		
	]
});

######hidden gamepad

CanvasGamepad.setup({
	hidden:true
});

######real world example

/*
** @description start the game
*/
game.init();
/*
** @description setup gamepad, no stick, no start, one button
*/    
CanvasGamepad.setup({
	canvas:"controller",
	joystick:false,
	start:false, 
	buttons:[
		{name:"jump", color:"rgba(0,0,0,0.25)"}
	]
});  

######example using key binding with multikey.js

CanvasGamepad.setup(
  {
    canvas:"controller",
    start:{name:"start", key:"b"},
    select:{name:"select", key:"v"},
    trace:true,
    debug:true,
    hint:true,
    buttons:[
      {name:"a", "key":"s"},
      {name:"b", "key":"a"},
      {name:"x", "key":"w"},
      {name:"y", "key":"q"}
    ]      
  }
);
multikey.setup(CanvasGamepad.events, "qwasbv", true);

the above code is running in this example

###CanvasGamepad observable method

CanvasGamepad has an observable method that returns the current state map of the gamepad

observe();

CanvasGamepad.setup()
/*
** @description the below example simply logs out the observe method return
*/
setInterval(
	function()
	{
		var map = CanvasGamepad.observe();
		console.log(new Date() + ":" + JSON.stringify(map))
	}
	,1000
);

/*
** @description additionally, you can throw it into your main loop in canvas
*/
function draw()
{
	if(CanvasGamepad)
	{
		gamepad(CanvasGamepad.observe())
	}
}