[Unity plugin] Lua Behavior Tree (iv): conditional nodes and Behavior nodes

Conditional node and Behavior node, the design of the two nodes themselves is relatively simple, the project to write the behavior tree node is generally the extension of the two nodes, and the decorator and composite nodes only need to use the built-in is enough.

Their inheritance relationships are as follows:

Conditional->task

Action->task

The code is as follows:

Btaction.lua

1Btaction =bttask:new ();2 3 Localthis =btaction;4 5 functionthis:new ()6     Localn \ {};7     setmetatable(o, self);8Self.__index =Self ;9     returno;Ten End

Btconditional.lua

1Btconditional =bttask:new ();2 3 Localthis =btconditional;4 5 functionthis:new ()6     Localo = {};7     setmetatable(o, self);8Self.__index =Self ;9     returno;Ten End

Btlog.lua

1 --[[2 Reference Behaviordesigner-action-log3 --]]4Btlog =btaction:new ();5 6 Localthis =Btlog;7 8 functionthis:new (text)9     Localo = {};Ten     setmetatable(o, self); OneSelf.__index =Self ; AO.text =text; -     returno; - End the  - functionthis:onupdate () -     Print(self.text); -     returnbttaskstatus.success; + End

Btisnullorempty.lua

1 --[[2 Reference Behaviordesigner-conditional-isnullorempty3 --]]4Btisnullorempty =btconditional:new ();5 6 Localthis =Btisnullorempty;7 8 functionthis:new (text)9     Localo = {};Ten     setmetatable(o, self); OneSelf.__index =Self ; AO.text =text; -     returno; - End the  - functionthis:onupdate () -     if( notSelf.textorSelf.text = ="") Then -         returnbttaskstatus.success; +     Else -         returnbttaskstatus.failure; +     End A End

Testbehaviortree.lua

1Testbehaviortree =btbehaviortree:new ();2 3 Localthis =Testbehaviortree;4 5 functionthis:new ()6     Localo = {};7     setmetatable(o, self);8Self.__index =Self ;9 this:init ();Ten     returno; One End A  - functionThis:init () -     Localsequence =btsequence:new (); the     LocalIsNullOrEmpty = Btisnullorempty:new (""); -     LocalLog = Btlog:new ("This is a empty string"); - Sequence:addchild (isnullorempty); - sequence:addchild (log); + This:pushtask (sequence); - End

The output is as follows:

[Unity plugin] Lua Behavior Tree (iv): conditional nodes and Behavior nodes