local Base = require("Battle/Logic/AI/Decision/Decision_Base")
local Decision_PhalanxSquareMoveMember = class("Decision_PhalanxSquareMoveMember", Base)

--[[
	初始化
--]]
function Decision_PhalanxSquareMoveMember:initialize(entity)
    --类型
    self.Type = LuaConst.DecisionType.PhalanxSquareMoveMember

    --瞬时
    self.IsOnce = false
end

function Decision_PhalanxSquareMoveMember:CalcOffsetByRotation(entity, decisionData, offset, dir)
	local dirRad = FP.V2.AngleToRight360(dir)
	dirRad:Mul(FP.Const.Deg2Rad)
	return FP.V2.RotateAroundOrigin(offset, dirRad)
end

function Decision_PhalanxSquareMoveMember:GetPhalanxPos(entity, decisionData)
	local groupComp = entity.components.group
	local index = groupComp.phalanxIndex
	local dir = groupComp.phalanxDir
	local center = groupComp.phalanxCenter
	local count = groupComp.phalanxMemberCount
	local strideColumn = groupComp.phalanxStrideColumn --列与列之间的间隔
	local strideRow = groupComp.phalanxStrideRow --行与行之间的间隔
	local rotateType = groupComp.rotateType
	local maxColumn = groupComp.maxColumn
	if index and dir and center and count then
		maxColumn = math.min(count, maxColumn)
		if maxColumn > 0 then
			local maxRow = math.ceil(count / groupComp.maxColumn)
			local column = (index - 1) % maxColumn + 1
			local row = math.floor((index - 1) / maxColumn) + 1
			--※这里的计算以右方向为0度角的方向，因为 fixedpoint 里的角度计算方法是以右方向为起始方向的( FP.V2.AngleToRight360 )

			--队列排列方式：index从小到大，是从dir方向的左上(x、z最大的坐标)开始排
			local startLeft = FP.newV1(0) --左边起始偏移, 是当dir指向x正方向时，row 1的x坐标
			startLeft:Reset(maxRow):Sub(1):Div(2):Mul(strideRow) --(maxRow - 1) / 2 * strideRow

			local startTop = FP.newV1(0) --顶部起始偏移， 是当dir指向x正方向时， column 1 的z坐标
			startTop:Reset(maxColumn):Sub(1):Div(2):Mul(strideColumn) --(maxColumn - 1) / 2 * strideColumn

			local xOffset = FP.newV1(row)
			xOffset:Sub(1):Mul(strideRow):Mul(-1):Add(startLeft)
			local zOffset = FP.newV1(column)
			zOffset:Sub(1):Mul(strideColumn):Mul(-1):Add(startTop)
			local offset = FP.newV2(xOffset, zOffset)

			if rotateType == LuaConst.EPhalanxRotateType.NORMAL_ROTATE then
				offset = self:CalcOffsetByRotation(entity, decisionData, offset, dir)
			end

			return center + offset
		end
    --else
    	--正常情况，兵长没有设置行列信息，此时 do nothing 即可
    end
end

function Decision_PhalanxSquareMoveMember:FindPathToPhalanxPos(entity, decisionData)
	local phalanxPos = self:GetPhalanxPos(entity, decisionData)
	if phalanxPos then
		-- local decisionRecordDic = entity.components.aiBase:GetDecisionRecordDic(decisionData)
		-- decisionRecordDic.phalanxPos = phalanxPos
		SystemManager.FindPath(entity, phalanxPos, true)
	end
	local decisionRecordDic = entity.components.aiBase:GetDecisionRecordDic(decisionData)
	decisionRecordDic.lastFindPathFrame = LogicUpdateManager._clientHandleFrame
end

--[[
	进入该Decision
--]]
function Decision_PhalanxSquareMoveMember:DecisionIn(entity, decisionData)
	Base.DecisionIn(self, entity, decisionData)
	self:FindPathToPhalanxPos(entity, decisionData)
end

function Decision_PhalanxSquareMoveMember:CanEnter(entity, decisionData, command)
	return entity.components.group.phalanxIndex ~= nil
end

--[[
	能否退出
	退出条件：移动到固定目标点
--]]
function Decision_PhalanxSquareMoveMember:CanExit(entity, decisionData, command)
	local decisionRecordDic = entity.components.aiBase:GetDecisionRecordDic(decisionData)
	if decisionRecordDic.phalanxPos then
	    local pathComponent = entity.components.path
	    local curPathPos = pathComponent.Path[pathComponent.CurPathPosIndex]
	    return not curPathPos
	else
		return true
	end
end

function Decision_PhalanxSquareMoveMember:SetCommand(entity, decisionData, command)
	local decisionRecordDic = entity.components.aiBase:GetDecisionRecordDic(decisionData)
	if decisionRecordDic.lastFindPathFrame == nil or decisionRecordDic.lastFindPathFrame + decisionData.IntParam1 >= LogicUpdateManager._clientHandleFrame then
		self:FindPathToPhalanxPos(entity, decisionData, command)
	end
    return self:RunToPathPoint(entity, command,decisionData)
end

return Decision_PhalanxSquareMoveMember