first commit

internal/world/zone_transfer.go

@@ -0,0 +1,20 @@
+package world
+
+import "a301_game_server/pkg/mathutil"
+
+// ZonePortal defines a connection between two zones.
+type ZonePortal struct {
+	// Trigger area in source zone.
+	SourceZoneID uint32
+	TriggerPos   mathutil.Vec3
+	TriggerRadius float32
+
+	// Destination in target zone.
+	TargetZoneID uint32
+	TargetPos    mathutil.Vec3
+}
+
+// IsInRange returns true if the given position is within the portal's trigger area.
+func (p *ZonePortal) IsInRange(pos mathutil.Vec3) bool {
+	return pos.DistanceXZ(p.TriggerPos) <= p.TriggerRadius
+}