keysystem.js

import { Key, KaboomCtx } from "kaboom";
import "kaboom/global";

export interface GlobalInputPlugin {
    setupInput(inputKeys: { [key: string]: Key }, isDebug: boolean): void;
    getKey(alias: string): Key;
    getGlobalInput(): any;
}

declare global {
    const setupInput: GlobalInputPlugin["setupInput"];
    const getKey: GlobalInputPlugin["getKey"];
    const getGlobalInput: GlobalInputPlugin["getGlobalInput"];
}

export default function globalInput(_k: KaboomCtx): GlobalInputPlugin {
    let keys: { [key: string]: Key };

    return {
        setupInput(inputKeys, _isDebug) {
            keys = inputKeys;
        },

        getKey(alias): Key {
            return keys[alias];
        },

        getGlobalInput() {
            return keys;
        }
    }
}

// use:
    // load input
    setupInput({
        "move_up": "up",
        "move_down": "down",
        "move_left": "left",
        "move_right": "right",
        "get_obj": "e",
        "rotate_obj": "q",
        "misc_auto_rotate": "rotate",
    });

    // use
    onKeyDown(getKey("move_right"), () => {
        ranib.move(RIGHT.scale(ranib.speed));
    });