--副将
local GroupSystem = {}
local FP=FP

function GroupSystem.OnLogicUpdate(entity)
    local groupComponent = entity.components.group
    local leader = groupComponent.LeaderEntity
    
    if leader then
        if groupComponent.ToLeaderDisSqr == nil then
            groupComponent.ToLeaderDisSqr = FP.newV1(0)
        end
        FP.V2.DistanceSqr(entity.components.move.LogicPos, leader.components.move.LogicPos, groupComponent.ToLeaderDisSqr)
    end
end

function GroupSystem.OnAddEntity(groupID, groupEntity, entity)
    local groupComponent = entity.components.group
    groupComponent.GroupID = groupID

    if groupEntity then
        groupEntity.components.group:AddEntity(entity)
        entity.components.group:SetGroupLeader(entity, groupEntity)
    end
end

function GroupSystem.OnRemoveEntity(groupEntity, entity)
    if groupEntity then
        groupEntity.components.group:RemoveEntity(entity)
        entity.components.group:SetGroupLeader(entity, nil)
    end
end

return GroupSystem