Select/hover tetramino with Area3D signal

scripts/tetromino.gd

@@ -5,6 +5,11 @@
 class_name Tetromino
 extends Node3D
 
+signal hovered(tetromino)
+signal unhovered(tetromino)
+signal selected(tetromino, grid_pos)
+signal deselected(tetromino)
+
 # Data
 @export var resource: TetrominoDefinition
 
@@ -28,15 +33,15 @@ var _grid_cells: PackedVector3Array = []  # Relative cell coordinates
 
 
 func _ready() -> void:
-	#_initialize_material()
-	#_set_mesh_representation()
+	_initialize_material()
+	_set_mesh_representation()
 	pass
 
 
 ## Initializes the material for visual representation.
 func _initialize_material() -> void:
 	_material = StandardMaterial3D.new()
-	_material.albedo_color = mesh_color
+	_material.albedo_color = Color.RED
 	_material.metallic = 0.3
 	_material.roughness = 0.7
 
@@ -44,15 +49,9 @@ func _initialize_material() -> void:
 ## Creates a simple mesh representation based on shape type.
 func _set_mesh_representation() -> void:
 	_mesh_instance.mesh = resource.mesh
-	#_mesh_instance.set_surface_override_material(0, _material)
+	_mesh_instance.set_surface_override_material(0, _material)
+	$SelectionArea/CollisionShape3D.shape = _mesh_instance.mesh.create_trimesh_shape()
 	_grid_cells = resource.grid_cells
-	
-
-## Creates a simple box mesh for tetromino visualization.
-func _create_box_mesh(width: float, height: float, depth: float) -> BoxMesh:
-	var box = BoxMesh.new()
-	box.size = Vector3(width, height, depth)
-	return box
 
 
 ## Gets the grid cells occupied by this tetromino at its current position.
@@ -139,3 +138,26 @@ func _to_string() -> String:
 		grid_position,
 		_grid_cells.size()
 	]
+
+## Callback used to handle tetromino selection and deselection
+func _on_selection_area_input_event(camera: Node, event: InputEvent, event_position: Vector3, normal: Vector3, shape_idx: int) -> void:
+	if event is InputEventMouseButton:
+		if event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+			print("Tetromino selected")
+			selected.emit(self, grid_position)
+		elif event.pressed and event.button_index == MOUSE_BUTTON_RIGHT:
+			print("Tetromino released")
+			deselected.emit(self)
+
+
+## Callback used to handle tetromino hovering
+func _on_selection_area_mouse_entered() -> void:
+	print("Tetromino hovered")
+	set_highlighted(true)
+	hovered.emit(self)
+
+## Callback used to handle tetromino unhovering
+func _on_selection_area_mouse_exited() -> void:
+	print("Tetromino unhovered")
+	set_highlighted(false)
+	unhovered.emit(self)

scripts/tetromino_selector.gd

@@ -33,34 +33,34 @@ func _ready() -> void:
 	pass
 
 
-func _input(event: InputEvent) -> void:
-	if event is InputEventMouseButton:
-		if event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
-			_handle_left_click()
-		elif event.pressed and event.button_index == MOUSE_BUTTON_RIGHT:
-			_handle_right_click()
-	
-	if _selected_tetromino and event is InputEventMouseMotion:
-		_update_ghost_position()
-	
-	if _selected_tetromino:
-		if event.is_action_pressed("ui_select"):  # Spacebar
-			_rotate_ghost()
-		elif event.is_action_pressed("ui_cancel"):  # ESC
-			_cancel_selection()
+#func _input(event: InputEvent) -> void:
+	#if event is InputEventMouseButton:
+		#if event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+			#_handle_left_click()
+		#elif event.pressed and event.button_index == MOUSE_BUTTON_RIGHT:
+			#_handle_right_click()
+	#
+	#if _selected_tetromino and event is InputEventMouseMotion:
+		#_update_ghost_position()
+	#
+	#if _selected_tetromino:
+		#if event.is_action_pressed("ui_select"):  # Spacebar
+			#_rotate_ghost()
+		#elif event.is_action_pressed("ui_cancel"):  # ESC
+			#_cancel_selection()
 
 
-## Handles left mouse click for selection or placement.
-func _handle_left_click() -> void:
-	if _selected_tetromino:
-		# Try to place the ghost tetromino
-		_place_selection()
-		return
-	
-	# Try to select a tetromino
-	var tetromino = _raycast_tetromino()
-	if tetromino:
-		_select_tetromino(tetromino)
+### Handles left mouse click for selection or placement.
+#func _handle_left_click() -> void:
+	#if _selected_tetromino:
+		## Try to place the ghost tetromino
+		#_place_selection()
+		#return
+	#
+	## Try to select a tetromino
+	#var tetromino = _raycast_tetromino()
+	#if tetromino:
+		#_select_tetromino(tetromino)
 
 
 ## Handles right mouse click to deselect.
@@ -69,34 +69,34 @@ func _handle_right_click() -> void:
 		_cancel_selection()
 
 
-## Raycasts from mouse position to find a tetromino.
-func _raycast_tetromino() -> Tetromino:
-	if not camera:
-		return null
-	
-	var mouse_pos = get_viewport().get_mouse_position()
-	var from = camera.project_ray_origin(mouse_pos)
-	var to = from + camera.project_ray_normal(mouse_pos) * 10000.0
-	
-	var space_state = get_world_3d().direct_space_state
-	var collision_mask = 0xFFFFFFFF # Hit all layers
-	var query = PhysicsRayQueryParameters3D.create(from, to, collision_mask)
-	query.collide_with_areas = true
-	
-	var result = space_state.intersect_ray(query)
-	
-	if result and result.get("collider"):
-		var collider = result["collider"]
-		# Walk up the node tree to find a Tetromino
-		var node = collider
-		while node:
-			if node is Tetromino:
-				return node
-			node = node.get_parent()
-	else:
-		print_debug("Raycast hit nothing")
-	
-	return null
+### Raycasts from mouse position to find a tetromino.
+#func _raycast_tetromino() -> Tetromino:
+	#if not camera:
+		#return null
+	#
+	#var mouse_pos = get_viewport().get_mouse_position()
+	#var from = camera.project_ray_origin(mouse_pos)
+	#var to = from + camera.project_ray_normal(mouse_pos) * 10000.0
+	#
+	#var space_state = get_world_3d().direct_space_state
+	#var collision_mask = 0xFFFFFFFF # Hit all layers
+	#var query = PhysicsRayQueryParameters3D.create(from, to, collision_mask)
+	#query.collide_with_areas = true;
+	#
+	#var result = space_state.intersect_ray(query)
+	#
+	#if result and result.get("collider"):
+		#var collider = result["collider"]
+		## Walk up the node tree to find a Tetromino
+		#var node = collider
+		#while node:
+			#if node is Tetromino:
+				#return node
+			#node = node.get_parent()
+	#else:
+		#print_debug("Raycast hit nothing")
+	#
+	#return null
 
 
 ## Selects a tetromino and converts it to ghost mode.