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fix explosion physics

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This commit is contained in:
Asraelite 2016-03-25 16:41:15 +00:00
parent bf8226481d
commit 8a8a9c8ae3
7 changed files with 54 additions and 24 deletions
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25
server/game/room/world/index.js
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@ -4,6 +4,8 @@ const Physics = require('./physics.js');
const Ship = require('./ship.js');
const Spawner = require('./spawner.js');
const b2Vec2 = require('box2d-html5').b2Vec2;
class World {
constructor(room) {
this.physics = new Physics();
@ -66,15 +68,20 @@ class World {
}
explosion(pos, power) {
var rays = Array(50).fill().map((_, i) => {
let a = Math.PI * i / 25;
let x = pos.x + Math.cos(a) * Math.sqrt(power);
let y = pos.y + Math.sin(a) * Math.sqrt(power);
return this.physics.raycast(pos, { x : x, y: y }, (body, point, dis) => {
dis = Math.max(dis, 0.5);
let force = power * (1 / dis) * (1 / dis);
body.applyForce(x * force, y * force, point);
});
var rays = Array(200).fill().map((_, i) => {
let a = Math.PI * i / 100;
let rx = Math.cos(a) * Math.sqrt(power);
let ry = Math.sin(a) * Math.sqrt(power);
let x = pos.x + rx;
let y = pos.y + ry;
let closest = this.physics.raycast(pos, { x : x, y: y });
if (!closest)
return;
let dis = Math.max(closest.dis, 1);
let force = power * (1 / dis) * (1 / dis);
closest.body.debug = (255 * (force / power)) | 0;
force *= 0.001;
closest.body.applyImpulse(rx * force, ry * force, closest.point);
});
}