esengine / ecs-framework Goto Github PK

class Emitter<T> {
    private _messageTable: Map<T, FuncPack[]>;
    ...
    public addObserver(eventType: T, handler: Function, context: any){
        let list: FuncPack[] = this._messageTable.get(eventType);
        if (!list){
            list = [];
            this._messageTable.set(eventType, list);
        }

        if (list.contains(handler))
            console.warn("您试图添加相同的观察者两次");
        list.push(new FuncPack(handler, context));
    }

    public removeObserver(eventType: T, handler: Function){
        this._messageTable.get(eventType).remove(handler);
    }
    ...
}