block.js

class Block {
    constructor(x, w, m, v, xc){
        this.x = x;
        this.y = height - w;
        this.w = w;
        this.v = v;
        this.m = m;
        this.xConstraint = xc
    }

    hitWall(){
      return (this.x <=0)
    }

    reverse(){
        this.v *= -1;
    }

    collide(other) {
        return !(this.x + this.w < other.x || this.x > other.x + other.w)
        //     print( 'not collide');
        // } else {
        //     print ('collide');
        // }
    }

    bounce(other) {
        let sumM = this.m + other.m;
        // let newV = (((this.m-other.m)/sumM)*this.v)+(((2*other.m)/sumM)*other.v);
        let newV = (this.m - other.m) / sumM * this.v;
        newV += (2 * other.m / sumM) * other.v;
        return newV
    }

    update() {
        this.x += this.v;
    }

    show(){
        const x = constrain(this.x, this.xConstraint, windowWidth)
        image(blockImg, x, this.y, this.w, this.w);
    }
}