neocturne/rpgedit
Archived
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

controller: gamecontext: implement simple collision handling

Browse source
This commit is contained in:
Matthias Schiffer 2018-11-04 20:22:47 +01:00
parent 884a5b700c
commit dbc3a6aa12
Signed by: neocturne
GPG key ID: 16EF3F64CB201D9C
1 changed files with 37 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
src/controller/gamecontext.ts
View file

@ -6,6 +6,7 @@ import { loadMap } from '../view/map';
import { Renderer } from '../view/renderer/renderer';
import { SpriteView } from '../view/sprite';
import { LineSegment } from '../math/line';
import { getJSON } from '../util';
import { vec2 } from 'gl-matrix';
@ -35,9 +36,16 @@ export class GameContext {
private readonly input: DirectionHandler;
private readonly entityPos: vec2 = vec2.create();
private readonly entityPos: vec2 = vec2.clone([6, 6]);
private readonly entityMovement: vec2 = vec2.create();
private readonly walls: LineSegment[] = [
new LineSegment(vec2.fromValues(1, 1), vec2.fromValues(1, 0), 10),
new LineSegment(vec2.fromValues(11, 1), vec2.fromValues(0, 1), 10),
new LineSegment(vec2.fromValues(11, 11), vec2.fromValues(-1, 0), 10),
new LineSegment(vec2.fromValues(1, 11), vec2.fromValues(0, -1), 10),
];
private constructor(
private readonly renderer: Renderer,
private readonly mapView: SpriteView,
@ -62,7 +70,34 @@ export class GameContext {
}
private updateStep(): void {
vec2.scaleAndAdd(this.entityPos, this.entityPos, this.entityMovement, this.speed);
let move = new LineSegment(this.entityPos, this.entityMovement, this.speed);
const p = vec2.create();
let rescan = true;
while (rescan) {
rescan = false;
for (const w of this.walls) {
if (!w.collidesMove(move))
continue;
move.getP2(p);
w.projectPoint(p, p);
const move2 = LineSegment.fromPoints(this.entityPos, p);
if (move2.l === 0)
return;
if (!move.equals(move2)) {
move = move2;
rescan = true;
break;
}
}
}
move.getP2(this.entityPos);
}
private update(time: number): void {