# Car controlled by Keys

Hi Everyone,

I am a newbie in processing. I have this mouse attracted object that i am trying to convert into a key arrows controlled algorithm. I want to keep this notion in pointing in the direction of motion but don’t know how to process to do that while keeping the vector logic.

Any idea?

``````Car c;

void setup(){
size (600,600);

c = new Car(width/2, height/2);

}

void draw(){
background(255);

c.update();
c.display();
c.checkEdges();
}

class Car {
PVector location;
PVector velocity;
PVector acceleration;
float factor;

Car(float _x, float _y){
location = new PVector(_x,_y);
velocity = new PVector(0,0);
acceleration = new PVector(0,0);
factor = 20;
}

void update(){
PVector mouse = new PVector (mouseX,mouseY);
PVector dir = PVector.sub(mouse,location);

dir.normalize();
dir.mult(0.2);
acceleration = dir;

velocity.limit(10);
}

void display(){

pushMatrix();
translate(location.x, location.y);
rotate(angle);
noStroke();

fill(0);
rect(0, -factor/2, factor*1.5, factor/4);
rect(0, factor/2, factor*1.5, factor/4);

fill(125);
rectMode(CENTER);
rect(0, 0, factor, factor*2);

popMatrix();
}

void checkEdges(){
if(location.x < 0){
location.x = width;
} else if (location.x > width){
location.x = 0;
}
if(location.y < 0){
location.y = height;
} else if (location.y > height){
location.y = 0;
}
}
}

``````

Thank you,

Rémy

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