How to use burner - 10 common examples
To help you get started, we’ve selected a few burner examples, based on popular ways it is used in public projects.
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vinceallenvince / FloraJS / test / mover.js View on Github 
Burner.System.setup(function() { // add your new object to the system
this.add('World', {
el: document.getElementById('world'),
width: 400,
height: 300,
gravity: new Burner.Vector(0.3, 1)
});
obj = this.add('Mover');
obj.step();
t.equal(parseInt(obj.angle.toPrecision(2)), 73, 'pointToDirection angle.');
});Burner.System.setup(function() { // add your new object to the system
this.add('World', {
el: document.getElementById('world'),
width: 400,
height: 300
});
obj = this.add('Dragger', {
location: new Burner.Vector(100, 100)
});
var item = this.add('Item', {
location: new Burner.Vector(101, 101),
velocity: new Burner.Vector(0, 1.5)
});
this.add('Dragger');
var force = obj.drag(item); // TODO: fix
t.equal(parseFloat(force.x.toPrecision(3)), 0, 'drag() returns force.x.');
t.equal(parseFloat(force.y.toPrecision(3)), -2.25, 'drag() returns force.y.');
});Walker.prototype.applyAdditionalForces = function() {
// walker use either perlin noise or random walk
if (this.perlin) {
this.perlinTime += this.perlinSpeed;
if (this.remainsOnScreen) {
this.acceleration = new Vector();
this.velocity = new Vector();
this.location.x = Utils.map(SimplexNoise.noise(this.perlinTime + this.perlinOffsetX, 0), -1, 1, 0, this.world.width);
this.location.y = Utils.map(SimplexNoise.noise(0, this.perlinTime + this.perlinOffsetY), -1, 1, 0, this.world.height);
} else {
this.acceleration.x = Utils.map(SimplexNoise.noise(this.perlinTime + this.perlinOffsetX, 0), -1, 1, this.perlinAccelLow, this.perlinAccelHigh);
this.acceleration.y = Utils.map(SimplexNoise.noise(0, this.perlinTime + this.perlinOffsetY), -1, 1, this.perlinAccelLow, this.perlinAccelHigh);
}
return;
}
// point to a random angle and move toward it
this._randomVector.x = 1;
this._randomVector.y = 1;
this._randomVector.normalize();
this._randomVector.rotate(Utils.degreesToRadians(Utils.getRandomNumber(0, 359)));
this._randomVector.mult(this.maxSpeed);
this.applyForce(this._randomVector);this.onDestroy = options.onDestroy || null;
this.rangeDisplayBorderStyle = options.rangeDisplayBorderStyle || false;
this.rangeDisplayBorderDefaultColor = options.rangeDisplayBorderDefaultColor || false;
this.parent = options.parent || null;
this.displayRange = !!options.displayRange;
if (this.displayRange) {
this.rangeDisplay = System.add('RangeDisplay', {
sensor: this,
rangeDisplayBorderStyle: this.rangeDisplayBorderStyle,
rangeDisplayBorderDefaultColor: this.rangeDisplayBorderDefaultColor
});
}
this.displayConnector = !!options.displayConnector;
this.activationLocation = new Vector();
this._force = new Vector(); // used as a cache Vector
this.visibility = 'hidden';
};this.onDestroy = options.onDestroy || null;
this.rangeDisplayBorderStyle = options.rangeDisplayBorderStyle || false;
this.rangeDisplayBorderDefaultColor = options.rangeDisplayBorderDefaultColor || false;
this.parent = options.parent || null;
this.displayRange = !!options.displayRange;
if (this.displayRange) {
this.rangeDisplay = System.add('RangeDisplay', {
sensor: this,
rangeDisplayBorderStyle: this.rangeDisplayBorderStyle,
rangeDisplayBorderDefaultColor: this.rangeDisplayBorderDefaultColor
});
}
this.displayConnector = !!options.displayConnector;
this.activationLocation = new Vector();
this._force = new Vector(); // used as a cache Vector
this.visibility = 'hidden';
};if (!sensorActivated && this.motorSpeed) {
this.motorDir.x = this.velocity.x;
this.motorDir.y = this.velocity.y;
this.motorDir.normalize();
if (this.velocity.mag() > this.motorSpeed) { // decelerate to defaultSpeed
this.motorDir.mult(-this.motorSpeed);
} else {
this.motorDir.mult(this.motorSpeed);
}
this.applyForce(this.motorDir); // constantly applies a force
}
// TODO: cache a vector for new location
if (this.followMouse) { // follow mouse
var t = {
location: new Vector(System.mouse.location.x,
System.mouse.location.y)
};
this.applyForce(this._seek(t));
}
if (this.seekTarget) { // seek target
this.applyForce(this._seek(this.seekTarget));
}
if (this.flowField) { // follow flow field
var res = this.flowField.resolution,
col = Math.floor(this.location.x/res),
row = Math.floor(this.location.y/res),
loc, target;
if (this.flowField.field[col]) {Burner.System.setup(function() {
var world = this.add('World', {
el: document.getElementById('world'),
width: 400,
height: 300
});
agent = this.add('Agent', {
location: new Burner.Vector(190, 140)
});
sensor = this.add('Sensor', {
parent: agent,
type: 'heat',
location: new Burner.Vector(200, 150),
offsetDistance: 0
});
});Burner.System.setup(function() {
this.add('World', {
el: document.getElementById('world'),
width: 400,
height: 300
});
obj = this.add('Agent', {
seekTarget: {
location: new Burner.Vector(300, 200)
}
});
});Burner.System.setup(function() {
var world = this.add('World', {
el: document.getElementById('world'),
width: 400,
height: 300
});
agent = this.add('Agent', {
location: new Burner.Vector(190, 140)
});
sensor = this.add('Sensor', {
parent: agent,
type: 'heat',
location: new Burner.Vector(200, 150),
offsetDistance: 0
});
});System.setup(function() {
var world = this.add('World', {
el: document.getElementById('world'),
width: 400,
height: 300
});
obj = this.add('Item', {
location: new Vector(initX, initY),
beforeStep: function() {before = 150;},
afterStep: function() {after = 300;}
});
});
obj.step();
