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Slingshot.js
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Slingshot.js
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class SlingShot{
constructor(bodyA, pointB){
var options = {
bodyA: bodyA,
pointB: pointB,
stiffness: 0.04,
length: 10
}
this.sling1 = loadImage('sprites/sling1.png');
this.sling2 = loadImage('sprites/sling2.png');
this.sling3 = loadImage('sprites/sling3.png');
this.pointB = pointB
this.sling = Constraint.create(options);
World.add(world, this.sling);
}
attach(body){
this.sling.bodyA = body;
}
fly(){
this.sling.bodyA = null;
}
display(){
image(this.sling1,200,20);
image(this.sling2,170,20);
if(this.sling.bodyA){
var pointA = this.sling.bodyA.position;
var pointB = this.pointB;
push();
stroke(48,22,8);
if(pointA.x < 220) {
strokeWeight(7);
line(pointA.x - 20, pointA.y, pointB.x -10, pointB.y);
line(pointA.x - 20, pointA.y, pointB.x + 30, pointB.y - 3);
image(this.sling3,pointA.x -30, pointA.y -10,15,30);
}
else{
strokeWeight(3);
line(pointA.x + 25, pointA.y, pointB.x -10, pointB.y);
line(pointA.x + 25, pointA.y, pointB.x + 30, pointB.y - 3);
image(this.sling3,pointA.x + 25, pointA.y -10,15,30);
}
pop();
}
}
}