23 lines
No EOL
644 B
JavaScript
23 lines
No EOL
644 B
JavaScript
class Entity {
|
|
constructor(game) {
|
|
let pos = { x: (Math.random() - 0.5) * (game ? game.width : 1000), y: (Math.random() - 0.5) * (game ? game.height : 1000) };
|
|
let vel = { x: 0, y: 0 };
|
|
|
|
this.pos = pos;
|
|
this.vel = vel;
|
|
}
|
|
bounce(game) {
|
|
let ent = this;
|
|
let { width, height } = game;
|
|
|
|
if (Math.abs(ent.pos.x) >= width / 2) {
|
|
ent.vel.x = (Math.abs(ent.vel.x) + 10) * -Math.sign(ent.pos.x);
|
|
}
|
|
|
|
if (Math.abs(ent.pos.y) >= height / 2) {
|
|
ent.vel.y = (Math.abs(ent.vel.y) + 10) * -Math.sign(ent.pos.y);
|
|
}
|
|
}
|
|
}
|
|
|
|
export default Entity; |