thallada/transport
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Try initializing and move trains in Web Workers

Browse Source 
Unfortunately, all of the train data has to be copied from the train web worker
to the main thread on every tick so it knows the new positions of the trains to
render. So every few ticks, the GC causes a little lag as it collects ~90+MB of
obsolete train arrays. There's no way for the two threads to share the same data
thanks to Spectre.
This commit is contained in:
Tyler Hallada
2018-04-22 18:40:20 -04:00
parent ad9167528a
commit 4d1ef84568
11 changed files with 340 additions and 226 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/utils.ts
View File

@@ -1,4 +1,4 @@
import * as PIXI from 'pixi.js';
import Point from 'pixi.js/lib/core/math/Point';
const EPSILON = 1.0;
@@ -19,20 +19,20 @@ export const weightedRandom = (choices: any[], weights: number[]): any => {
}
};
export const randomPoint = () => (
new PIXI.Point(randomInt(0, window.innerWidth), randomInt(0, window.innerHeight))
export const randomPoint = (height: number, width: number): Point => (
new Point(randomInt(0, width), randomInt(0, height))
);
export const pointsEqual = (pointA: PIXI.Point, pointB: PIXI.Point): boolean => (
export const pointsEqual = (pointA: Point, pointB: Point): boolean => (
(pointA.x === pointB.x && pointA.y === pointB.y)
);
export const pointsAlmostEqual = (pointA: PIXI.Point, pointB: PIXI.Point): boolean => (
export const pointsAlmostEqual = (pointA: Point, pointB: Point): boolean => (
Math.abs(pointA.x - pointB.x) < EPSILON &&
Math.abs(pointA.y - pointB.y) < EPSILON
);
export const distance = (pointA: PIXI.Point, pointB: PIXI.Point): number => {
export const distance = (pointA: Point, pointB: Point): number => {
const distX = pointA.x - pointB.x;
const distY = pointA.y - pointB.y;
return Math.sqrt((distX * distX) + (distY * distY));
@@ -43,10 +43,10 @@ export const rangeMap = (num: number, inMin: number, inMax: number,
(num - inMin) * (outMax - outMin) / (inMax - inMin) + outMin
);
export const angleRadians = (pointA: PIXI.Point, pointB: PIXI.Point): number => (
export const angleRadians = (pointA: Point, pointB: Point): number => (
Math.atan2(-(pointB.x - pointA.x), pointB.y - pointA.y)
);
export const angleDegrees = (pointA: PIXI.Point, pointB: PIXI.Point): number => (
export const angleDegrees = (pointA: Point, pointB: Point): number => (
180 + angleRadians(pointA, pointB) * (180 / Math.PI)
);