[Unity插件]Lua行为树(八)：行为节点扩展
2021-06-26 20:05
标签：分享图片 需要 image unit com designer ISE 技术分享 run 先看一下之前的行为节点是怎么设计的： BTAction.lua BTLog.lua 由上可见，行为节点的具体逻辑都是放在OnUpdate中的，那么问题来了，如果想在OnUpdate前执行一段逻辑，OnUpdate后也执行一段逻辑，类似于状态机那样，那么就需要对行为节点进行扩展。 BTAction.lua BTLog.lua TestBehaviorTree.lua 打印如下： [Unity插件]Lua行为树(八)：行为节点扩展 标签：分享图片 需要 image unit com designer ISE 技术分享 run 原文地址：https://www.cnblogs.com/lyh916/p/9655819.html 1 BTAction = BTTask:New();
2
3 local this = BTAction;
4 this.taskType = BTTaskType.Action;
5
6 function this:New()
7 local o = {};
8 setmetatable(o, self);
9 self.__index = self;
10 return o;
11 end
1 --[[
2 参考BehaviorDesigner-Action-Log
3 --]]
4 BTLog = BTAction:New();
5
6 local this = BTLog;
7 this.name = "BTLog";
8
9 function this:New(text)
10 local o = {};
11 setmetatable(o, self);
12 self.__index = self;
13 o.text = text;
14 return o;
15 end
16
17 function this:OnUpdate()
18 print(self.text);
19 return BTTaskStatus.Success;
20 end
1 BTAction = BTTask:New();
2
3 local this = BTAction;
4 this.taskType = BTTaskType.Action;
5 this.isEnter = false;
6
7 function this:New()
8 local o = {};
9 setmetatable(o, self);
10 self.__index = self;
11 return o;
12 end
13
14 function this:OnUpdate()
15 local status;
16 if (not self.isEnter) then
17 self.isEnter = true;
18 self:Enter();
19 end
20 if (self.isEnter) then
21 status = self:Execute();
22 if (status ~= BTTaskStatus.Running) then
23 self:Exit();
24 self.isEnter = false;
25 end
26 end
27 return status;
28 end
29
30 function this:Enter()
31 print("BTAction:Enter");
32 end
33
34 function this:Execute()
35 print("BTAction:Execute");
36 return BTTaskStatus.Success;
37 end
38
39 function this:Exit()
40 print("BTAction:Exit");
41 end
1 --[[
2 参考BehaviorDesigner-Action-Log
3 --]]
4 BTLog = BTAction:New();
5
6 local this = BTLog;
7 this.name = "BTLog";
8
9 function this:New(text)
10 local o = {};
11 setmetatable(o, self);
12 self.__index = self;
13 o.text = text;
14 return o;
15 end
16
17 function this:Enter()
18 print(self.name .. ":Enter");
19 end
20
21 function this:Execute()
22 print(self.text);
23 return BTTaskStatus.Success;
24 end
25
26 function this:Exit()
27 print(self.name .. ":Exit");
28 end
1 TestBehaviorTree = BTBehaviorTree:New();
2
3 local this = TestBehaviorTree;
4 this.name = "TestBehaviorTree";
5
6 function this:New()
7 local o = {};
8 setmetatable(o, self);
9 self.__index = self;
10 o:Init();
11 return o;
12 end
13
14 function this:Init()
15 local sequence = BTSequence:New();
16 local log = BTLog:New("This is log!!!");
17 local log2 = BTLog:New("This is log2!!!");
18 log.name = "log";
19 log2.name = "log2";
20
21 self:SetStartTask(sequence);
22
23 sequence:AddChild(log);
24 sequence:AddChild(log2);
25 end
