-- 跑向动态位置行为
-- 该行为用来进行一次性的自动寻路并移动，期间如果玩家有操作就会打断行为，行为结束一定会关闭AI。

local Base = require("Battle/Logic/AI/Decision/Decision_Base")
local Decision_RunToDynamicPos = class("Decision_RunToDynamicPos", Base)
local ARRIVE_DIST_SQR = FP.newV1(4)
--[[
	初始化
--]]
function Decision_RunToDynamicPos:initialize(entity)
    --类型
    self.Type = LuaConst.DecisionType.RunToDynamicPos
    --瞬时
    self.IsOnce = false
end

--[[
	进入该Decision
--]]
function Decision_RunToDynamicPos:DecisionIn(entity, decisionData)
    if entity.components.aiBase.runToDynamicPos then
        SystemManager.FindPath(entity, entity.components.aiBase.runToDynamicPos , true)
    end
end

function Decision_RunToDynamicPos:DecisionOut(entity, decisionData)
    entity.components.aiBase:SetRunToDynamicPos(nil)        --退出这个Decision时就清空DynamicPos
    SystemManager.StopAutoFight(entity)                     --退出这个Decision时需要停止自动战斗
end

function Decision_RunToDynamicPos:CanEnter(entity)
    return entity.components.aiBase.runToDynamicPos ~= nil
end

--[[
	能否退出
	退出条件：移动到固定目标点
--]]
function Decision_RunToDynamicPos:CanExit(entity, decisionData, command)
    local canExit = false
    local pathComponent = entity.components.path
    local curPathPos = pathComponent.Path[pathComponent.CurPathPosIndex]
    if not curPathPos then
        canExit = true
    else
        if entity.components.aiBase.runToDynamicPos == nil then
            canExit = true
        else
            if entity.components.aiBase.runToDynamicPos:DistanceSqr(entity:GetLogicPos()) <= ARRIVE_DIST_SQR then
                canExit = true    
            end
        end
    end
    return canExit
end

--[[
	输出指令
--]]
function Decision_RunToDynamicPos:SetCommand(entity, decisionData, command)
    repeat
        local aiBaseComponent = entity.components.aiBase
        local decisionRecordDic = aiBaseComponent:GetDecisionRecordDic(decisionData)

        if self:ShouldBlockAI(decisionRecordDic) then
            break
        end

        if self:HasPlayerInput(command)  then
            --如果有玩家输入，就直接把目标位置设为nil，这个会引发该Decision退出
            entity.components.aiBase:SetRunToDynamicPos(nil)
            break
        end

        return self:RunToPathPoint(entity, command, decisionData)
    until true
end

return Decision_RunToDynamicPos