events.go

package neighborhood

import "reflect"

var Events = moduleEvents{
    Update: &callbackEvent{make(map[uintptr]Callback)},
}

type moduleEvents struct {
    Update *callbackEvent
}

type callbackEvent struct {
    callbacks map[uintptr]Callback
}

func (this *callbackEvent) Attach(callback Callback) {
    this.callbacks[reflect.ValueOf(callback).Pointer()] = callback
}

func (this *callbackEvent) Detach(callback Callback) {
    delete(this.callbacks, reflect.ValueOf(callback).Pointer())
}

func (this *callbackEvent) Trigger() {
    for _, callback := range this.callbacks {
        callback()
    }
}

type Callback = func()