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import { InputHandler } from './inputhandler';
import { Listenable } from '../../util';
import { vec2 } from 'gl-matrix';
export enum ButtonCode {
Action,
Back,
Menu,
}
const buttonMapping: Record<string, ButtonCode> = {
KeyZ: ButtonCode.Action,
KeyX: ButtonCode.Back,
KeyC: ButtonCode.Menu,
};
export interface DirectionInput {
type: 'direction';
direction: vec2;
}
export interface ButtonInput {
type: 'button';
button: ButtonCode;
}
export type GameInput = DirectionInput | ButtonInput;
export class GameInputHandler extends Listenable<[GameInput]> {
private readonly input: InputHandler;
constructor() {
super();
this.input = new InputHandler(
new Set(['ArrowLeft', 'ArrowUp', 'ArrowRight', 'ArrowDown', ...Object.keys(buttonMapping)]),
);
this.input.addListener((key: string, pressed: boolean) => {
const button = buttonMapping[key];
if (button !== undefined) {
if (pressed)
this.runListeners({
type: 'button',
button,
});
return;
}
const dir = vec2.create();
if (this.input.has('ArrowLeft')) vec2.add(dir, dir, [-1, 0]);
if (this.input.has('ArrowUp')) vec2.add(dir, dir, [0, -1]);
if (this.input.has('ArrowRight')) vec2.add(dir, dir, [1, 0]);
if (this.input.has('ArrowDown')) vec2.add(dir, dir, [0, 1]);
if (vec2.sqrLen(dir) > 0) vec2.normalize(dir, dir);
this.runListeners({
type: 'direction',
direction: dir,
});
});
}
}
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