Hi Guys,
I had years of experience with business applications (Flex and JS) but never created a game. FlashPunk seems so fluid and easy to use, that is a real pleasure creating something with it. I was inspired by Lighting Effect Class I found here, and decided to share a small class of my own. It is a simple shield effect. Hope somebody finds it useful…
package
{
import net.flashpunk.Entity;
import net.flashpunk.FP;
import net.flashpunk.utils.Draw;
public class Shield extends Entity
{
private var _target:Entity;
private var _color:uint;
private var _frames:int;
private var _vib:Number;
private var _step:Number;
private var _xEllipse:Number;
private var _yEllipse:Number;
private var _xOffset:Number;
private var _yOffset:Number;
private var _pX1:Number;
private var _pY1:Number;
private var _pX2:Number;
private var _pY2:Number;
private var _resetFrames:int;
public function Shield(target:Entity, color:uint = 0xFFFFFF, frames:int = 29, xOffset:int=0, yOffset:int=0, xEllipse:Number = 1, yEclipse:Number = 1, vib:int = 2, step:int = 30)
{
this._target = target;
this._color = color;
this._frames = frames;
this._resetFrames = _frames;
this._xOffset = xOffset;
this._yOffset = yOffset;
this._xEllipse = xEllipse;
this._yEllipse = yEclipse;
this._vib = vib;
this._step = step;
}
public function get color():uint
{
return _color;
}
public function set color(value:uint):void
{
_color = value;
}
public function get frames():int
{
return _frames;
}
public function set frames(value:int):void
{
_frames = value;
}
public function get vib():Number
{
return _vib;
}
public function set vib(value:Number):void
{
_vib = value;
}
public function get step():Number
{
return _step;
}
public function set step(value:Number):void
{
_step = value;
}
public function get xEllipse():Number
{
return _xEllipse;
}
public function set xEllipse(value:Number):void
{
_xEllipse = value;
}
public function get yEllipse():Number
{
return _yEllipse;
}
public function set yEllipse(value:Number):void
{
_yEllipse = value;
}
public function get xOffset():Number
{
return _xOffset;
}
public function set xOffset(value:Number):void
{
_xOffset = value;
}
public function get yOffset():Number
{
return _yOffset;
}
public function set yOffset(value:Number):void
{
_yOffset = value;
}
protected function returnVibOffset():Number
{
return this._vib * -0.5 + Math.random() * this._vib * 2;
}
override public function render():void
{
if (this._target.world == null)
return;
var h:Number = this._target.x + _target.halfWidth + this._xOffset;
var k:Number = this._target.y + _target.halfHeight + this._yOffset;
var r:Number = this._target.halfHeight + 10;
var step:Number = 2 * Math.PI / this._step;
for (var theta:Number = 0; theta <= 360; theta += step)
{
if (_frames >= 0)
this._frames--;
else
{
this._frames = this._resetFrames;
_pX1 = h + this._xEllipse * r * Math.cos(theta) + returnVibOffset();
_pY1 = k - this._yEllipse * r * Math.sin(theta) + returnVibOffset();
_pX2 = h + this._xEllipse * r * Math.cos(theta + step) + returnVibOffset();
_pY2 = k - this._yEllipse * r * Math.sin(theta + step) + returnVibOffset();
}
Draw.line(_pX1, _pY1, _pX2, _pY2, _color);
}
super.render();
}
}
}
You can see example here.
Thanks
I’m using Chrome (latest version I think) on Windows 8.1. It’s always awesome to see new faces around here, especially the ones who give back to the community!