constructor() {

        this.vec = {

            loc: createVector(),

            vel: createVector(),

            acc: createVector()

        }

        this.for = {

            gra: createVector(0, 0.5, 0),

            thr: createVector(0, -1, 0)

        }

        this.dim = {

            w: 25,

            h: 50,

            d: 25

        }

        this.properties = {

            m: 1

        }

        this.index = 0;

        this.rot = {

            x: 0,

            y: 0,

            z: 0

        }

    }

    setLoc(i, w, d, y) {

        this.vec.loc.y = y;

        let offW = w / 2;

        let offD = d / 2;

        this.index = i;

        switch (i) {

            case 0:

                offW *= 1;

                offD *= 1;

                break;

            case 1:

                offW *= -1;

                offD *= 1;

                break;

            case 2:

                offW *= 1;

                offD *= -1;

                break;

            case 3:

                offW *= -1;

                offD *= -1;

                break;

        }

        this.vec.loc.x += offW;

        this.vec.loc.z += offD;

    }

    applyForce(f) {

        var temp = createVector();

        temp = p5.Vector.div(f, this.properties.m);

        this.vec.acc.add(temp);

    }

    applyThrust() {

        this.applyForce(this.for.thr);

    }

    setAngle(x,y,z) {

        this.rot.x = x;

        this.rot.y = y;

        this.rot.z = z;

    }

    update() {

        //print(this.rot.z);

        this.for.thr.x = map(this.rot.x, 0, PI, -2, 0);

        this.applyForce(this.for.gra);

        this.vec.vel.add(this.vec.acc);

        this.vec.vel.limit(30);

        this.vec.loc.add(this.vec.vel);

        this.vec.acc.mult(0);

    }

    show() {

        push();

        translate(this.vec.loc.x, this.vec.loc.y, this.vec.loc.z);

        rotateX(this.rot.x);

        rotateY(this.rot.y);

        rotateZ(this.rot.z);

        fill(this.index * (255 / 3), 0, 0);

        strokeWeight(4);

        stroke(255);

        box(this.dim.w, this.dim.h, this.dim.d);

        pop();

    }

}