59 lines
1.5 KiB
JavaScript
59 lines
1.5 KiB
JavaScript
|
const events = [];
|
|||
|
|
const EventsManager = {
|
|||
|
|
/**
|
|||
|
|
* 注册一个事件并持续监听
|
|||
|
|
* @param eventName 事件名称
|
|||
|
|
* @param callback 事件的触发函数
|
|||
|
|
*/
|
|||
|
|
on(eventName, callback) {
|
|||
|
|
events.push({
|
|||
|
|
eventName,
|
|||
|
|
callback,
|
|||
|
|
once: false,
|
|||
|
|
});
|
|||
|
|
},
|
|||
|
|
/**
|
|||
|
|
* 注册一个事件并最多只触发一次
|
|||
|
|
* @param eventName 事件名称
|
|||
|
|
* @param callback 事件的触发函数
|
|||
|
|
*/
|
|||
|
|
once(eventName, callback) {
|
|||
|
|
events.push({
|
|||
|
|
eventName,
|
|||
|
|
callback,
|
|||
|
|
once: true,
|
|||
|
|
});
|
|||
|
|
},
|
|||
|
|
/**
|
|||
|
|
* 卸载一个事件
|
|||
|
|
* @param eventName 事件名称
|
|||
|
|
* @param callback 事件句柄，若缺省将卸载所有同名事件
|
|||
|
|
*/
|
|||
|
|
off(eventName, callback) {
|
|||
|
|
events.forEach((item, index) => {
|
|||
|
|
if (item.eventName === eventName) {
|
|||
|
|
if (!callback || item.callback === callback) {
|
|||
|
|
events.splice(index, 1);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
});
|
|||
|
|
},
|
|||
|
|
emit(eventName, ...args) {
|
|||
|
|
const res = [];
|
|||
|
|
const indexs = [];
|
|||
|
|
events.forEach((item, index) => {
|
|||
|
|
if (item.eventName === eventName) {
|
|||
|
|
res.push(item.callback(...args));
|
|||
|
|
if (item.once) {
|
|||
|
|
indexs.unshift(index);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
});
|
|||
|
|
indexs.forEach((value) => {
|
|||
|
|
events.splice(value, 1);
|
|||
|
|
});
|
|||
|
|
return res;
|
|||
|
|
},
|
|||
|
|
};
|
|||
|
|
GameGlobal.events = EventsManager;
|