157 lines
3.7 KiB
Lua
157 lines
3.7 KiB
Lua
------------------------------------------------
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--作者：xihan
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--日期：2019-07-02
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--文件：StateMachine.lua
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--模块：StateMachine
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--描述：状态机类
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------------------------------------------------
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local StateMachine = {
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--状态机所有者
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Owner = nil,
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--配置信息
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Config = nil,
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--前一个状态
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PreState = nil,
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--当前状态
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CurState = nil,
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--前一个状态的参数
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PreParam = nil,
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--当前参数
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CurParam = nil,
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--方法名缓存
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FuncNameCache = nil,
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--配置id
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ConfigId = nil,
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--当前状态更新函数（可nil）
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StateUpdateFunc = nil,
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}
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function StateMachine:New(owner, configId)
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local _t = Utils.DeepCopy(self);
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_t:SetOwner(owner);
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if configId then
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_t:SetConfig(configId);
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end
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return _t;
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end
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function StateMachine:SetOwner(owner)
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self.Owner = owner;
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end
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function StateMachine:SetConfig(configId)
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self:Clear();
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if not self.Owner or not configId or configId == -1 then
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return;
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end
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self.ConfigId = configId;
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self.ID = self.Owner.ID;
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local _cfgPath = string.format("Config.AI.%s",configId);
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--移除是为了方便调试
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Utils.RemoveRequiredByName(_cfgPath);
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local _cfg = require(_cfgPath);
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self.Config = Utils.DeepCopy(_cfg);
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self.Config.Owner = self.Owner;
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self.Config.ChangeState = function(cfg, cfgState, cfgParam)
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self:ChangeState(cfgState, cfgParam);
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end
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self.Config:Init();
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end
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function StateMachine:GetFunc(state, funcName)
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if not self.FuncNameCache[state] then
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self.FuncNameCache[state] = {};
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end
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if not self.FuncNameCache[state][funcName] then
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self.FuncNameCache[state][funcName] = string.format("On_%s_%s", state, funcName);
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end
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return self.Config[self.FuncNameCache[state][funcName]];
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end
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function StateMachine:GetCurState()
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return self.CurState;
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end
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function StateMachine:GetOwner()
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return self.Owner;
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end
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--改变状态
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function StateMachine:ChangeState(State, param)
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if self.CurState == State then
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return
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end
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local _checkFunc = self:GetFunc(State,"Check");
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if State and (not _checkFunc or _checkFunc and _checkFunc(self.Config, self.PreState, self.PreParam)) then
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self.PreState = self.CurState;
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self.PreParam = self.CurParam;
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if self.PreState then
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local _exitFunc = self:GetFunc(self.PreState,"Exit");
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if _exitFunc then
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_exitFunc(self.Config);
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end
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end
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self.CurState = State;
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self.CurParam = param;
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self.Config.CurState = State;
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self.Config.CurParam = param;
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local _enterFunc = self:GetFunc(State,"Enter");
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if _enterFunc then
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_enterFunc(self.Config);
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end
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self.StateUpdateFunc = self:GetFunc(State, "Update");
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return true;
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end
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return false;
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end
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--恢复上一个状态
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function StateMachine:RevertState()
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if self.PreState then
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self:ChangeState(self.PreState, self.PreParam);
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end
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end
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--判断当前的状态
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function StateMachine:IsState(State)
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return self.CurState == State;
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end
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--更新
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function StateMachine:Update()
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if not self.Config then
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return;
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end
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if self.CurState then
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if self.StateUpdateFunc then
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self.StateUpdateFunc (self.Config);
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end
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end
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self.Config:Update();
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end
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--处理消息
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function StateMachine:PushEvent(args)
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if self.Config then
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self.Config:Event(args);
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end
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end
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--清理状态
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function StateMachine:Clear()
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self.CurState = nil;
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self.PreState = nil;
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self.PreParam = nil;
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self.CurParam = nil;
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self.ConfigId = nil;
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self.Config = nil;
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self.StateUpdateFunc = nil;
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self.FuncNameCache = {};
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end
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return StateMachine; |