feat: 增加任务功能

game/task/events.go

@@ -0,0 +1,32 @@
+package task
+
+type (
+	TaskDoneEventHandle func(eventId int64, task *Task)
+)
+
+var taskDoneEventHandles = make(map[int64]map[int64]TaskDoneEventHandle)
+
+// RegTaskDoneEvent 注册任务完成事件
+func RegTaskDoneEvent(id int64, eventId int64, handle TaskDoneEventHandle) {
+	events, exist := taskDoneEventHandles[id]
+	if !exist {
+		events = map[int64]TaskDoneEventHandle{}
+		taskDoneEventHandles[id] = events
+	}
+	events[eventId] = handle
+}
+
+// UnRegTaskDoneEvent 取消注册任务完成事件
+func UnRegTaskDoneEvent(id int64, eventId int64) {
+	events, exist := taskDoneEventHandles[id]
+	if exist {
+		delete(events, eventId)
+	}
+}
+
+// OnTaskDoneEvent 任务完成事件
+func OnTaskDoneEvent(task *Task) {
+	for eventId, handle := range taskDoneEventHandles[task.id] {
+		handle(eventId, task)
+	}
+}

game/task/options.go

@@ -0,0 +1,17 @@
+package task
+
+type Option func(task *Task)
+
+// WithInitCount 通过初始化计数的方式创建任务
+func WithInitCount(count int) Option {
+	return func(task *Task) {
+		task.count = count
+	}
+}
+
+// WithDone 通过指定任务完成计数的方式创建任务
+func WithDone(done int) Option {
+	return func(task *Task) {
+		task.done = done
+	}
+}

game/task/state.go

@@ -0,0 +1,10 @@
+package task
+
+const (
+	StateDoing  State = iota // 进行中
+	StateDone                // 已完成
+	StateReward              // 已领取
+)
+
+// State 任务状态
+type State byte

game/task/task.go

@@ -0,0 +1,67 @@
+package task
+
+// NewTask 新建任务
+func NewTask(id int64, options ...Option) *Task {
+	task := &Task{
+		id: id,
+	}
+	for _, option := range options {
+		option(task)
+	}
+	if task.count > task.done {
+		task.count = task.done
+	}
+	task.Add(0)
+	return task
+}
+
+type Task struct {
+	id     int64 // 任务ID
+	count  int   // 任务计数
+	done   int   // 任务完成计数
+	reward bool  // 是否已领取奖励
+}
+
+// Reset 重置任务
+func (slf *Task) Reset() {
+	slf.count = 0
+	slf.reward = false
+	switch slf.GetState() {
+	case StateDone:
+		OnTaskDoneEvent(slf)
+	}
+}
+
+// Add 增加任务计数
+func (slf *Task) Add(count int) {
+	if count != 0 {
+		slf.count += count
+		if slf.count < 0 {
+			slf.count = 0
+		} else if slf.count > slf.done {
+			slf.count = slf.done
+		}
+	}
+	switch slf.GetState() {
+	case StateDone:
+		OnTaskDoneEvent(slf)
+	}
+}
+
+// GetState 获取任务状态
+func (slf *Task) GetState() State {
+	if slf.count >= slf.done {
+		if slf.reward {
+			return StateReward
+		}
+		return StateDone
+	}
+	return StateDoing
+}
+
+// Reward 返回是否领取过奖励，并且设置任务为领取过奖励的状态
+func (slf *Task) Reward() bool {
+	reward := slf.reward
+	slf.reward = true
+	return reward
+}