1 files changed, 37 insertions, 0 deletions
diff --git a/src/view/input/directionhandler.ts b/src/view/input/directionhandler.ts
new file mode 100644
index 0000000..0a3687e
--- /dev/null
+++ b/src/view/input/directionhandler.ts
@@ -0,0 +1,37 @@
+import { InputHandler } from './inputhandler';
+
+import { Listenable } from '../../util';
+
+import { vec2 } from 'gl-matrix';
+
+export const enum Keycode {
+	Left = 37,
+	Up = 38,
+	Right = 39,
+	Down = 40,
+}
+
+export class DirectionHandler extends Listenable<[vec2]> {
+	private readonly input: InputHandler;
+
+	constructor() {
+		super();
+
+		this.input = new InputHandler(new Set([Keycode.Left, Keycode.Up, Keycode.Right, Keycode.Down]));
+
+		this.input.addListener(() => {
+			const dir = vec2.create();
+
+			if (this.input.has(Keycode.Left))
+				vec2.add(dir, dir, [-1, 0]);
+			if (this.input.has(Keycode.Up))
+				vec2.add(dir, dir, [0, -1]);
+			if (this.input.has(Keycode.Right))
+				vec2.add(dir, dir, [1, 0]);
+			if (this.input.has(Keycode.Down))
+				vec2.add(dir, dir, [0, 1]);
+
+			this.runListeners(dir);
+		});
+	}
+}