Lively Kernel canvas
getRandomNumber = function(max) { return Math.floor(Math.random()*max+1)-1};
getRandomPoint = function(maxX, maxY) { return pt(getRandomNumber(maxX), getRandomNumber(maxY)) };
getRandomPtFromRect = function(r) { return getRandomPoint(r.width, r.height).addPt(r.topLeft())}
// this script is evaluated on world load10Math.PI/2function($super) {
// call the initialize of ImageMorph with the mouse picture
$super(new Rectangle(45, 45, 49, 49), 'http://livelykernel.sunlabs.com/repository/lively-wiki/mouse.png');
// move position to the center of the morph instead of top left corner, nicer rotating behavior
this.moveOriginBy(this.getExtent().scaleBy(0.5));
// remove the blue background
this.setFill(null);
}function() {
var p = this.getPosition();
var angle = this.getRotation()+Math.PI*(1/2);
var r = this.howFarCanIGoWithOneStep;
return pt(p.x+r*Math.cos(angle), p.y+r*Math.sin(angle));
}function() {
this.mayBeChangeDirection();
var newPos = this.calculateNewPosition();
// while (!WorldMorph.current().bounds().containsRect(this.bounds().translatedBy(newPos))) {
var activeBounds = pt(document.body.clientWidth, document.body.clientHeight).subPt(this.getExtent()).extentAsRectangle();
var i=0;
while (!activeBounds.containsPoint(newPos)) {
this.newDirection();
newPos = this.calculateNewPosition();
i++;
if (i>100) newPos = pt(100,100);
}
this.setPosition(newPos);
this.eatCheese();
}function() { if (getRandomNumber(10) == 5) this.newDirection() }function() {
this.rotateBy(getRandomNumber(this.maxTurn*100)/100 - this.maxTurn/2);
}function() { this.startStepping(20, 'moveOneStep') }function() {
this.owner.submorphs
.select(function(ea) { return ea.isCheese && this.bounds().intersect(ea.bounds()) }, this)
.forEach(function(ea) { ea.remove(); console.log('Hmmm, delicious!') });
}
null
20
96.34192912390125
3.0775931533037197