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

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

    --瞬时
    self.IsOnce = false
end

--[[
	能否退出
	退出条件：在范围内
--]]
function Decision_KeepDistance:CanExit(entity, decisionData, command)
    local disMax = decisionData.IntParam1 + LuaConst.DisLimit
    local disMin = decisionData.IntParam1 - LuaConst.DisLimit

    local targetComponent = entity.components.target
    if targetComponent.Target then
        return targetComponent.ToTargetDisSqr <= disMax * disMax and targetComponent.ToTargetDisSqr >= disMin * disMin
    else
        return false
    end
end

--[[
	输出指令
--]]
function Decision_KeepDistance:SetCommand(entity, decisionData, command)
    local targetComponent = entity.components.target
    local target = targetComponent.Target
    if target then
        local disMax = decisionData.IntParam1 + LuaConst.DisLimit
        local disMin = decisionData.IntParam1 - LuaConst.DisLimit
        if targetComponent.ToTargetDisSqr > disMax * disMax or targetComponent.ToTargetDisSqr < disMin * disMin then
            local selfPos = entity.components.move.LogicPos
            local targetPos = target.components.move.LogicPos
            local dir = selfPos - targetPos
            local pos = targetPos + FP.V2.Normalized(dir) * decisionData.IntParam1
            command.MoveDir = pos - selfPos
            command.RotateDir:Reset(command.MoveDir)
        end
    end
    return command
end

return Decision_KeepDistance