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car.js
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car.js
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class Car{
constructor(x,y,width,height,controlType, maxSpeed = 3){
this.x = x;
this.y = y;
this.width = width;
this.height = height;
this.speed = 0 ;
this.acceleration = 0.2;
this.maxSpeed = maxSpeed;
this.friction = 0.05;
this.angle = 0;
this.damaged = false;
if(controlType != "DUMMY"){
this.sensor = new Sensor(this);
}
this.controls = new Controls(controlType);
this.polygon=this.#createPolygon();
}
#move(){
if(this.controls.forward){
this.speed += this.acceleration;
}
if(this.controls.reverse){
this.speed -= this.acceleration;
}
if(this.speed > this.maxSpeed){
this.speed = this.maxSpeed;
}
if(this.speed < -this.maxSpeed/2){
this.speed = -this.maxSpeed/2;
}
if(this.speed>0){
this.speed -= this.friction;
}
if(this.speed < 0){
this.speed += this.friction;
}
if(Math.abs(this.speed) < this.friction){
this.speed = 0;
}
if(this.speed != 0){
const flip = this.speed > 0 ? 1 : -1;
if(this.controls.left){
this.angle += 0.03 * flip;
}
if(this.controls.right){
this.angle -= 0.03 * flip;
}
}
this.x -= Math.sin(this.angle) * this.speed;
this.y -= Math.cos(this.angle) * this.speed;
}
update(roadBorders,traffic){
if(!this.damaged){
this.#move();
this.polygon = this.#createPolygon();
this.damaged = this.#assessDamage(roadBorders,traffic)
}
if(this.sensor){
this.sensor.update(roadBorders,traffic)
}
}
#assessDamage(roadBorders,traffic){
for(let i = 0; i < roadBorders.length; i++ ){
if(polysIntersect(this.polygon,roadBorders[i])){
return true;
}
}
for(let i = 0; i < traffic.length; i++ ){
if(polysIntersect(this.polygon,traffic[i].polygon)){
return true;
}
}
return false;
}
#createPolygon(){
const points = [];
const rad = Math.hypot(this.width,this.height)/2;
const alpha = Math.atan2(this.width,this.height);
//Top right
points.push({
x: this.x-Math.sin(this.angle-alpha)*rad,
y: this.y-Math.cos(this.angle-alpha)*rad
})
points.push({
x: this.x-Math.sin(this.angle+alpha)*rad,
y: this.y-Math.cos(this.angle+alpha)*rad
})
points.push({
x: this.x-Math.sin(Math.PI+this.angle-alpha)*rad,
y: this.y-Math.cos(Math.PI+this.angle-alpha)*rad
})
points.push({
x: this.x-Math.sin(Math.PI+this.angle+alpha)*rad,
y: this.y-Math.cos(Math.PI+this.angle+alpha)*rad
})
return points;
}
draw(ctx,color){
if(this.damaged){
ctx.fillStyle = "red";
} else {
ctx.fillStyle = color;
}
ctx.beginPath();
ctx.moveTo(this.polygon[0].x,this.polygon[0].y);
for(let i=1; i< this.polygon.length; i++){
ctx.lineTo(this.polygon[i].x,this.polygon[i].y)
}
ctx.fill()
if(this.sensor){
this.sensor.draw(ctx)
}
}
}