package gameserver

import "gac-hkrpg-go/internal/common"

// An entrance identifies a particular room even when several rooms share a
// floor. Its start anchor must take precedence over that floor's checkpoints.
func sceneEntranceAnchor(res *common.JsonConfig, entryID, floorID uint32) (common.AnchorItem, bool) {
	entrance, exists := res.MapEntrances[entryID]
	if !exists || entrance.FloorID != floorID {
		return common.AnchorItem{}, false
	}
	if entrance.StartAnchorID == 0 {
		anchor, exists := res.SceneDefaultAnchors[floorID]
		return anchor, exists && anchor.ID != 0
	}
	for _, anchor := range res.SceneAnchors[entryID] {
		if anchor.ID == entrance.StartAnchorID {
			return anchor, true
		}
	}
	return common.AnchorItem{}, false
}