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observer.go
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/
observer.go
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package eventsystem
import (
"fmt"
)
type IEventObserver interface {
Update()
SetSubject(subject IEventSubject)
}
type EventObserver struct {
subject IEventSubject
}
func NewEventObserver() IEventObserver {
return &EventObserver{}
}
func (e *EventObserver) SetSubject(subject IEventSubject) {
e.subject = subject
}
func (e *EventObserver) Update() {
}
type EnemyKilledUI struct {
EventObserver
}
func NewEnemyKilledUI() IEventObserver {
return &EnemyKilledUI{}
}
func (e *EnemyKilledUI) Update() {
fmt.Println("enemy killed count=", e.subject.GetCount())
}
// 某一类任务
type EnemyKilledTask struct {
EventObserver
// taskSystem TaskSystem
}
func NewEnemyKilledTask() IEventObserver {
return &EnemyKilledTask{}
}
func (e *EnemyKilledTask) Update() {
params := e.subject.GetParams()
if params == nil && len(params) == 0 {
return
}
if params[0].(string) == "小怪" {
// e.taskCount++
// if e.taskCount >= 5 {
// // 完成任务
// }
}
}