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Adds support for limiting the coordinates for stick base. #27

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Adds support for limiting the coordinates for stick base. #27

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f705d6f
Adds support for limiting the coordinates for stick base.
Xzereus May 20, 2014
a3e7eb4
Fixes the limitedbase to work with multiple joysticks
Xzereus May 20, 2014
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84 changes: 51 additions & 33 deletions virtualjoystick.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,12 @@ var VirtualJoystick = function(opts)
this._stickEl = opts.stickElement || this._buildJoystickStick();
this._baseEl = opts.baseElement || this._buildJoystickBase();
this._mouseSupport = opts.mouseSupport !== undefined ? opts.mouseSupport : false;
this._stationaryBase = opts.stationaryBase || false;
this._limitedBase = opts.limitedBase || false;
this._limitMaxX = opts.limitMaxX || window.innerWidth;
this._limitMaxY = opts.limitMaxY || window.innerHeight;
this._limitMinX = opts.limitMinX || 0;
this._limitMinY = opts.limitMinY || 0;
this._stationaryBase = opts.stationaryBase || false;
this._baseX = this._stickX = opts.baseX || 0
this._baseY = this._stickY = opts.baseY || 0
this._limitStickTravel = opts.limitStickTravel || false
Expand Down Expand Up @@ -159,33 +164,33 @@ VirtualJoystick.prototype._onUp = function()
}

VirtualJoystick.prototype._onDown = function(x, y)
{
this._pressed = true;
if(this._stationaryBase == false){
this._baseX = x;
this._baseY = y;
this._baseEl.style.display = "";
this._move(this._baseEl.style, (this._baseX - this._baseEl.width /2), (this._baseY - this._baseEl.height/2));
}
this._stickX = x;
this._stickY = y;
if(this._limitStickTravel === true){
var deltaX = this.deltaX();
var deltaY = this.deltaY();
var stickDistance = Math.sqrt( (deltaX * deltaX) + (deltaY * deltaY) );
if(stickDistance > this._stickRadius){
var stickNormalizedX = deltaX / stickDistance;
var stickNormalizedY = deltaY / stickDistance;
this._stickX = stickNormalizedX * this._stickRadius + this._baseX;
this._stickY = stickNormalizedY * this._stickRadius + this._baseY;
}
}
this._stickEl.style.display = "";
this._move(this._stickEl.style, (this._stickX - this._stickEl.width /2), (this._stickY - this._stickEl.height/2));
{
this._pressed = true;
if(this._stationaryBase == false){
this._baseX = x;
this._baseY = y;
this._baseEl.style.display = "";
this._move(this._baseEl.style, (this._baseX - this._baseEl.width /2), (this._baseY - this._baseEl.height/2));
}

this._stickX = x;
this._stickY = y;

if(this._limitStickTravel === true){
var deltaX = this.deltaX();
var deltaY = this.deltaY();
var stickDistance = Math.sqrt( (deltaX * deltaX) + (deltaY * deltaY) );
if(stickDistance > this._stickRadius){
var stickNormalizedX = deltaX / stickDistance;
var stickNormalizedY = deltaY / stickDistance;

this._stickX = stickNormalizedX * this._stickRadius + this._baseX;
this._stickY = stickNormalizedY * this._stickRadius + this._baseY;
}
}

this._stickEl.style.display = "";
this._move(this._stickEl.style, (this._stickX - this._stickEl.width /2), (this._stickY - this._stickEl.height/2));
}

VirtualJoystick.prototype._onMove = function(x, y)
Expand Down Expand Up @@ -226,6 +231,12 @@ VirtualJoystick.prototype._onMouseDown = function(event)
event.preventDefault();
var x = event.clientX;
var y = event.clientY;

// If it's outside the limit for this stick, just return
if(this._limitedBase == true &&
(x > this._limitMaxX || x < this._limitMinX || y > this._limitMaxY || y < this._limitMinY))
return;

return this._onDown(x, y);
}

Expand All @@ -248,19 +259,26 @@ VirtualJoystick.prototype._onTouchStart = function(event)
// notify event for validation
var isValid = this.dispatchEvent('touchStartValidation', event);
if( isValid === false ) return;

// dispatch touchStart
this.dispatchEvent('touchStart', event);

event.preventDefault();
// get the first who changed
var touch = event.changedTouches[0];

// forward the action
var x = touch.pageX;
var y = touch.pageY;

// If it's outside the limit for this stick, just return
if(this._limitedBase == true &&
(x > this._limitMaxX || x < this._limitMinX || y > this._limitMaxY || y < this._limitMinY))
return;

// set the touchIdx of this joystick
this._touchIdx = touch.identifier;

// forward the action
var x = touch.pageX;
var y = touch.pageY;
return this._onDown(x, y)
}

Expand Down Expand Up @@ -398,7 +416,7 @@ VirtualJoystick.prototype._check3D = function()
{
var prop = this._getTransformProperty();
// IE8<= doesn't have `getComputedStyle`
if (!prop || !window.getComputedStyle) return module.exports = false;
if (!prop || !window.getComputedStyle) { module = module || {}; return module.exports = false; }

var map = {
webkitTransform: '-webkit-transform',
Expand Down