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Add rotation view and path prediction toggles

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This commit is contained in:
asraelite 2018-03-06 10:35:54 +00:00
parent ce6a707526
commit 5b861cc341
12 changed files with 195 additions and 19 deletions
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26
js/world/body.mjs
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@ -55,20 +55,20 @@ export default class Body {
return this.rotateVector(x, y, this.r);
}
tickMotion() {
this.x += this.xvel;
this.y += this.yvel;
this.r += this.rvel;
this.rvel *= this.rfriction;
tickMotion(speed = 1) {
this.x += this.xvel * speed;
this.y += this.yvel * speed;
this.r += this.rvel * speed;
this.rvel *= this.rfriction * speed;
}
tickGravity(bodies) {
tickGravity(bodies, speed = 1) {
bodies.forEach(b => {
let force = b.mass / (this.distanceTo(b) ** 2) * G;
let [[ax, ay], [bx, by]] = [this.com, b.com];
let angle = Math.atan2(by - ay, bx - ax);
this.xvel += Math.cos(angle) * force;
this.yvel += Math.sin(angle) * force;
this.xvel += Math.cos(angle) * force * speed;
this.yvel += Math.sin(angle) * force * speed;
});
}
@ -100,4 +100,14 @@ export default class Body {
this.yvel += vy;
this.rvel += r / this.mass;
}
orbit(cel, altitude) {
this.gravity = true;
let speed = Math.sqrt(G * cel.mass / (altitude + cel.radius));
let [cx, cy] = cel.com;
this.x = cx;
this.y = cy - (altitude + cel.radius);
this.yvel = 0;
this.xvel = speed;
}
}