feat: Add a multiplayer-synchronized portal door with visual elements, player detection, and dynamic color.

scenes/portal_door.tscn

@@ -10,6 +10,16 @@ albedo_color = Color(0.1, 0.5, 0.8, 1)
 metallic = 0.8
 roughness = 0.2
 
+[sub_resource type="PlaneMesh" id="PlaneMesh_ground"]
+size = Vector2(1.0, 1.0)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ground"]
+transparency = 1
+albedo_color = Color(1, 1, 1, 0.4)
+emission_enabled = true
+emission = Color(1, 1, 1, 1)
+emission_energy_multiplier = 1.0
+
 [sub_resource type="PlaneMesh" id="PlaneMesh_vortex"]
 size = Vector2(1.4, 2.1)
 
@@ -18,7 +28,7 @@ transparency = 1
 albedo_color = Color(0.0, 0.6, 1.0, 0.4)
 emission_enabled = true
 emission = Color(0.0, 0.4, 1.0, 1)
-emission_energy_multiplier = 2.0
+emission_energy_multiplier = 5.0
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_trigger"]
 size = Vector3(1.4, 2.1, 0.8)
@@ -63,6 +73,11 @@ transform = Transform3D(1, 0, 0, 0, -4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 1.1
 mesh = SubResource("PlaneMesh_vortex")
 surface_material_override/0 = SubResource("StandardMaterial3D_vortex")
 
+[node name="GroundIndicator" type="MeshInstance3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.05, 0.4)
+mesh = SubResource("PlaneMesh_ground")
+surface_material_override/0 = SubResource("StandardMaterial3D_ground")
+
 [node name="Area3D" type="Area3D" parent="."]
 collision_layer = 0
 collision_mask = 2

scripts/portal_door.gd

@@ -28,6 +28,9 @@ func _ready():
 	
 	# Visual feedback: indicate door is active
 	_update_visuals()
+	
+	# Adjust GroundIndicator position based on spawn_offset metadata
+	_adjust_indicator_position()
 
 func _on_body_entered(body: Node3D):
 	if not is_active: return
@@ -76,6 +79,15 @@ func _update_visuals():
 			var mat = frame.get_surface_override_material(0)
 			if mat:
 				mat.albedo_color = portal_color.lerp(Color.BLACK, 0.4)
+				
+	var ground = get_node_or_null("GroundIndicator")
+	if ground:
+		var mat = ground.get_surface_override_material(0)
+		if mat:
+			mat.albedo_color = portal_color
+			mat.albedo_color.a = 0.4
+			mat.emission = portal_color
+			mat.emission_energy_multiplier = 2.0
 
 func _initialize_unique_materials():
 	var vortex = get_node_or_null("Vortex")
@@ -96,9 +108,29 @@ func _initialize_unique_materials():
 			
 			if mat:
 				frame.set_surface_override_material(0, mat.duplicate())
+				
+	var ground = get_node_or_null("GroundIndicator")
+	if ground:
+		var mat = ground.get_surface_override_material(0)
+		if not mat:
+			mat = ground.mesh.surface_get_material(0)
+		if mat:
+			ground.set_surface_override_material(0, mat.duplicate())
 
-func get_teleport_target_position() -> Vector2i:
+func _adjust_indicator_position():
-	# This function will be called by the manager to determine WHERE the player spawns
+	# This uses the spawn_offset metadata set by PortalModeManager
-	# usually just outside the target door's position.
+	# to push the ground indicator "into" the room.
-	# For now, let's just return a placeholder that the manager will override.
+	if not has_meta("spawn_offset"): return
-	return Vector2i.ZERO
+	
+	var ground = get_node_or_null("GroundIndicator")
+	if not ground: return
+	
+	var offset_2d = get_meta("spawn_offset") # Vector2i
+	var offset_3d = Vector3(offset_2d.x, 0, offset_2d.y)
+	
+	# Convert the global direction (into the room) to local coordinates
+	var local_dir = to_local(global_position + offset_3d).normalized()
+	
+	# Nudge the indicator in that direction
+	ground.position = local_dir * 0.5 # Reduced from 0.6 to close the gap
+	ground.position.y = 0.05 # Keep it just above the floor