forked from CCBlueX/LiquidBounce
/
EventManager.kt
59 lines (50 loc) · 1.95 KB
/
EventManager.kt
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/*
* LiquidBounce Hacked Client
* A free open source mixin-based injection hacked client for Minecraft using Minecraft Forge.
* https://github.com/CCBlueX/LiquidBounce/
*/
package net.ccbluex.liquidbounce.event
object EventManager {
private val registry = HashMap<Class<out Event>, MutableList<EventHook>>()
/**
* Register [listener]
*/
fun registerListener(listener: Listenable) =
listener.javaClass.declaredMethods.forEach { method ->
if (method.isAnnotationPresent(EventTarget::class.java) && method.parameterTypes.size == 1) {
if (!method.isAccessible)
method.isAccessible = true
val eventClass = method.parameterTypes[0] as Class<out Event>
val eventTarget = method.getAnnotation(EventTarget::class.java)
val invokableEventTargets = registry.getOrDefault(eventClass, ArrayList())
invokableEventTargets += EventHook(listener, method, eventTarget)
registry[eventClass] = invokableEventTargets.sortedByDescending { it.priority }.toMutableList()
}
}
/**
* Unregister listener
*
* @param listenable for unregister
*/
fun unregisterListener(listenable: Listenable) =
registry.forEach { (_, targets) ->
targets.removeIf { it.eventClass == listenable }
}
/**
* Call event to listeners
*
* @param event to call
*/
fun callEvent(event: Event) {
val targets = registry[event.javaClass] ?: return
for (invokableEventTarget in targets) {
try {
if (!invokableEventTarget.eventClass.handleEvents() && !invokableEventTarget.isIgnoreCondition)
continue
invokableEventTarget.method.invoke(invokableEventTarget.eventClass, event)
} catch (throwable: Throwable) {
throwable.printStackTrace()
}
}
}
}