/// <summary>
/// This function generates a new array of particle sprites to attach to the emitter.
/// </summary>
/// <param name="graphics">Texture for the particles - can be one square or a spritesheet. Set Multiple to true if it is a spritesheet and it will automatically create the particles as long as each frame on the spritesheet is square</param>
/// <param name="Multiple">Whether or not the Texture contains multiple sprites for particles</param>
/// <param name="Quantity">The number of particles to generate</param>
/// <param name="Rotation">The amount of rotation in degrees per frame, so keep this number low</param>
/// <param name="Collide">The collidability of the particle, 1 = Full and 0 = None</param>
/// <returns>This FlxEmitter instance (nice for chaining stuff together, if you're into that).</returns>
//public FlxEmitter makeParticles(Texture2D graphics, bool Multiple=false, uint Quantity = 50, float Rotation = 1f, float Collide = 0.8f)
public FlxEmitter makeParticles(string graphics, uint Quantity = 50, uint BakedRotations = 0, bool Multiple = false, float Collide = 0.8f)
{
maxSize = Quantity;
uint totalFrames = 0;
if (Multiple) {
FlxSprite sprite = new FlxSprite();
sprite.loadGraphic(graphics,true);
totalFrames = sprite.Frames;
sprite.destroy();
}
uint randomFrame;
FlxParticle particle;
int i = 0;
while(i < Quantity)
{
particle = new FlxParticle();
/*
if(particleClass == null)
particle = new FlxParticle();
else
particle = new particleClass();
*/
if(Multiple)
{
randomFrame = (uint)(FlxG.random()*totalFrames);
if(BakedRotations > 0)
particle.loadRotatedGraphic(graphics,BakedRotations,(int)randomFrame);
else
{
particle.loadGraphic(graphics,true);
particle.Frame = (int)randomFrame;
}
}
else
{
if(BakedRotations > 0)
particle.loadRotatedGraphic(graphics,BakedRotations);
else
particle.loadGraphic(graphics);
}
if(Collide > 0)
{
particle.Width *= Collide;
particle.Height *= Collide;
particle.centerOffsets();
}
else
particle.AllowCollisions = FlxObject.None;
particle.Exists = false;
add(particle);
i++;
}
return this;
}
override public void create()
{
FlxG.Framerate = 60;
//FlxG.flashFramerate = 60;
//Here we actually initialize out emitter
//The parameters are X Y Size (Maximum number of particles the emitter can store)
theEmitter = new FlxEmitter(10, FlxG.height / 2, 200);
//Now by default the emitter is going to have some properties set on it and can be used immediately
//but we're going to change a few things.
//First this emitter is on the side of the screen, and we want to show off the movement of the particles
//so lets make them launch to the right.
theEmitter.setXSpeed(100, 200);
//and lets funnel it a tad
theEmitter.setYSpeed( -50, 50);
//Let's also make our pixels rebound off surfaces
theEmitter.bounce = 0.8f;
//Now let's add the emitter to the state.
add(theEmitter);
//Now it's almost ready to use, but first we need to give it some pixels to spit out!
//Lets fill the emitter with some white pixels
for (int i = 0; i < theEmitter.maxSize/2; i++) {
whitePixel = new FlxParticle();
whitePixel.makeGraphic(2, 2, new Color(0xFF,0xFF,0xFF));
whitePixel.Visible = false; //Make sure the particle doesn't show up at (0, 0)
theEmitter.add(whitePixel);
whitePixel = new FlxParticle();
whitePixel.makeGraphic(1, 1, new Color(0xFF,0xFF,0xFF));
whitePixel.Visible = false;
theEmitter.add(whitePixel);
}
//Now let's setup some buttons for messing with the emitter.
collisionButton = new FlxButton(0, FlxG.height - 22, "Collision", onCollision);
add(collisionButton);
gravityButton = new FlxButton(80, FlxG.height - 22, "Gravity", onGravity);
add(gravityButton);
quitButton = new FlxButton(FlxG.width-80, FlxG.height - 22, "Quit", onQuit);
add(quitButton);
//I'll just leave this here
topText = new FlxText(0, 2, FlxG.width, "Welcome");
topText.setAlignment("center");
add(topText);
//Lets setup some walls for our pixels to collide against
collisionGroup = new FlxGroup();
wall= new FlxSprite(100, (FlxG.height/2)-50);
wall.makeGraphic(10, 100, new Color(0xFF,0xFF,0xFF,0x50));//Make it darker - easier on the eyes :)
wall.Visible = wall.Solid = false;//Set both the visibility AND the solidity to false, in one go
wall.Immovable = true;//Lets make sure the pixels don't push out wall away! (though it does look funny)
collisionGroup.add(wall);
//Duplicate our wall but this time it's a floor to catch gravity affected particles
floor = new FlxSprite(10, 267);
floor.makeGraphic((uint)FlxG.width - 20, 10, new Color(0xFF,0xFF,0xFF,0x50));
floor.Visible = floor.Solid = false;
floor.Immovable = true;
collisionGroup.add(floor);
//Please note that this demo makes the walls themselves not collide, for the sake of simplicity.
//Normally you would make the particles have solid = true or false to make them collide or not on creation,
//because in a normal environment your particles probably aren't going to change solidity at a mouse
//click. If they did, you would probably be better suited with emitter.setAll("solid", true)
//I just don't feel that setAll is applicable here(Since I would still have to toggle the walls anyways)
//Don't forget to add the group to the state(Like I did :P)
add(collisionGroup);
//Now lets set our emitter free.
//Params: Explode, Particle Lifespan, Emit rate(in seconds)
theEmitter.start(false, 3, .01f);
//Let's re show the cursors
FlxG.mouse.show();
//Mouse.hide();
}
/// <summary>
/// This function generates a new array of particle sprites to attach to the emitter.
/// </summary>
/// <param name="graphics">Texture for the particles - can be one square or a spritesheet. Set Multiple to true if it is a spritesheet and it will automatically create the particles as long as each frame on the spritesheet is square</param>
/// <param name="Multiple">Whether or not the Texture contains multiple sprites for particles</param>
/// <param name="Quantity">The number of particles to generate</param>
/// <param name="Rotation">The amount of rotation in degrees per frame, so keep this number low</param>
/// <param name="Collide">The collidability of the particle, 1 = Full and 0 = None</param>
/// <returns>This FlxEmitter instance (nice for chaining stuff together, if you're into that).</returns>
//public FlxEmitter makeParticles(Texture2D graphics, bool Multiple=false, uint Quantity = 50, float Rotation = 1f, float Collide = 0.8f)
public FlxEmitter makeParticles(string graphics, uint Quantity = 50, uint BakedRotations = 0, bool Multiple = false, float Collide = 0.8f)
{
maxSize = Quantity;
uint totalFrames = 0;
if (Multiple)
{
FlxSprite sprite = new FlxSprite();
sprite.loadGraphic(graphics, true);
totalFrames = sprite.Frames;
sprite.destroy();
}
uint randomFrame;
FlxParticle particle;
int i = 0;
while (i < Quantity)
{
particle = new FlxParticle();
/*
* if(particleClass == null)
* particle = new FlxParticle();
* else
* particle = new particleClass();
*/
if (Multiple)
{
randomFrame = (uint)(FlxG.random() * totalFrames);
if (BakedRotations > 0)
{
particle.loadRotatedGraphic(graphics, BakedRotations, (int)randomFrame);
}
else
{
particle.loadGraphic(graphics, true);
particle.Frame = (int)randomFrame;
}
}
else
{
if (BakedRotations > 0)
{
particle.loadRotatedGraphic(graphics, BakedRotations);
}
else
{
particle.loadGraphic(graphics);
}
}
if (Collide > 0)
{
particle.Width *= Collide;
particle.Height *= Collide;
particle.centerOffsets();
}
else
{
particle.AllowCollisions = FlxObject.None;
}
particle.Exists = false;
add(particle);
i++;
}
return(this);
}
