All files / games/roguelike/src/game game.ts

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88.88% Functions 8/9
85.36% Lines 35/41

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import { CellularMapGenerator, GameMap } from "jga-games-maps";
 
import { Display, DisplayInterface } from "jga-games-display";
 
import { World, Scheduler } from "jga-games-engine";
 
import { Keys } from "jga-games-commands";
 
import { ScreenInterface } from "jga-games-screens";
 
import { TileFactory } from "jga-games-tiles";
 
import { CommandManager } from "jga-patterns-command";
 
import { EntityFactory, ScreenFactoryCreateParamsInterface, ScreenFactory } from "./index";
 
export interface GameInterface {
    getCurrentScreen(): ScreenInterface;
    getDisplay(): DisplayInterface;
    switchScreen(screen: ScreenInterface): void;
}
 
export class Game implements GameInterface {
    protected display: DisplayInterface;
    protected currentScreen: ScreenInterface;
    protected screenFactory: ScreenFactory;
    protected engine: World;
 
    private readonly screenHeight = 24;
    private readonly screenWidth = 80;
 
    public constructor() {
        this.engine = new World(new Scheduler(), createMap(), new CommandManager(), new EntityFactory());
 
        // Create player;
        this.engine.createPlayer();
 
        this.display = new Display(this.screenHeight, this.screenWidth);
        this.screenFactory = new ScreenFactory();
 
        const createParams: ScreenFactoryCreateParamsInterface = {
            engine: this.engine,
            type: "start",
            display: this.display,
        };
 
        this.currentScreen = this.screenFactory.create(createParams);
        this.currentScreen.render();

        this.init();
    }
 
    public getCurrentScreen(): ScreenInterface {
        return this.currentScreen;
    }

    public getDisplay(): DisplayInterface {
        return this.display;
    }
 
    public switchScreen(screen: ScreenInterface): void {
        this.currentScreen.exit();
        this.getDisplay().clear();
 
        this.currentScreen = screen;
 
        this.currentScreen.enter();
        this.refresh();
    }
 
    private init(): void {
        const bindEventToScreen = (eventName: string): void => {
            window.addEventListener(eventName, (event) => {
                const inputEvent: KeyboardEvent = event as KeyboardEvent;
                const newScreenName = this.currentScreen.handleInput(eventName, { code: inputEvent.code as Keys });
 
                if (null !== newScreenName) {
                    const newScreen = this.screenFactory.create({
                        type: newScreenName,
                        engine: this.engine,
                        display: this.display,
                    });
                    this.switchScreen(newScreen);
                }
                this.refresh();
            });
        };
 
        bindEventToScreen("keydown");
    }
 
    private refresh(): void {
        this.getDisplay().clear();
        this.currentScreen.render();
    }
}
 
function createMap(): GameMap {
    const mapWidth = 80;
    const mapHeight = 60;
 
    const generator = new CellularMapGenerator(mapWidth, mapHeight, new TileFactory());
 
    return new GameMap({
        generator,
        height: mapHeight,
        tileFactory: new TileFactory(),
        width: mapWidth,
    });
}