Basic particle effect

Introduction

Ok, this is a basic particle animation. We can use particle to simulate explosions etc.

Below some examples I made :

  • Disassemble / assemble : click on the scene for the first animation, click again for the second.

output

Alternative content

Get Adobe Flash player

  • "Space explosion" : explosion without gravity parameter. Click on the scene.

output

Alternative content

Get Adobe Flash player

  • Explosion with gravity parameter.

output

Alternative content

Get Adobe Flash player

For this tutorial I will define a particle as a "pixel".

We're going to use a linked-list to stock particles in order to gain in performance.

Let's haXe

Let's create the class "Particle" in which we're going to define its attributs. 

class Particle
{   
    /*next represents the next particle (linked-list)*/
    public var next:Particle;
   
    /*Our particle will have :
        - a color,
        - an y position that we're going to vary (y2) 
        - x and y position
        - trajectory variationu
        - x and y velocities
         */
    public var color:UInt;
    public var x:Float;
    public var y:Float;
    public var y2:Float;
    public var variation:Float;
    public var xVel:Float;
    public var yVel:Float;
  
    public function new(c:UInt)
    {
        color = c;
    }
}