mascully/improcket
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add landing physics

Browse source
This commit is contained in:
asraelite 2018-03-04 12:50:52 +00:00
parent 9435e887a4
commit d85338d9f2
6 changed files with 38 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

15
js/world/body.mjs
View file

@ -37,9 +37,9 @@ export default class Body {
return [nx - cx, ny - cy];
}
rotateVector(x, y, r) {
return [(x * Math.cos(this.r) - y * Math.sin(this.r)),
(y * Math.cos(this.r) - x * Math.sin(this.r))];
rotateVector(x, y, r = this.r) {
return [(x * Math.cos(r) - y * Math.sin(r)),
(y * Math.cos(r) - x * Math.sin(r))];
}
relativeVector(x, y) {
@ -65,9 +65,12 @@ export default class Body {
distanceTo(body) {
let [[ax, ay], [bx, by]] = [this.com, body.com];
let result = Math.max(Math.sqrt(((bx - ax) ** 2) +
return Math.max(Math.sqrt(((bx - ax) ** 2) +
((by - ay) ** 2)), 1);
return result;
}
angleTo(ax, ay, bx, by) {
return Math.atan2(by - ay, bx - ax);
}
approach(body, distance) {
@ -83,7 +86,7 @@ export default class Body {
}
applyDirectionalForce(x, y, r) {
let [vx, vy] = this.rotateVector(x, y, r);
let [vx, vy] = this.rotateVector(x, y);
this.xvel += vx;
this.yvel += vy;
this.rvel += r / this.mass;