Move sprite according to angle

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      Hi, I've been trying to figure out how to move a sprite in the direction it is facing. I was originally going to use the p2js "thrust" function, but it caused a small jitter with the camera. I then tried to use the Arcade "velocityFromAngle", but it was not accurate enough. Here is the code I have 

playerBoat.prototype.update = function () {

    if(wasd.up.isDown )
        this.speed += 2;
        this.speed -=2;

    if(this.speed > 0){

    if(wasd.left.isDown && this.speed > 0){
        this.angle -= 1;

    else if(wasd.right.isDown && this.speed > 0){
        this.angle += 1;

As someone who was never too strong in math, I am a little bit confused as to how to relate the angle and speed to do what I'm trying to do. I'm assuming it's something with vectors, but I could use some direction. Thanks in advance!


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