Select/hover tetramino with Area3D signal

TETROMINO_SELECTOR.md

@@ -1,19 +1,22 @@
 # Tetromino Selector System
 
 ## Overview
-Adds interactive tetromino selection and repositioning during gameplay. Players can select already-placed tetrominoes, move them, rotate them, and place them in new positions.
+Adds interactive tetromino selection and repositioning during gameplay. Players can select already-
+placed tetrominoes, move them, rotate them, and place them in new positions.
 
 ## Components
 
 ### 1. TetrominoSelector (scripts/tetromino_selector.gd)
+
 Main controller for tetromino selection logic.
 
 **Features:**
-- Raycast-based tetromino detection on left-click
+- Raycast-based tetromino detection on left-click from camera to world
-- Ghost mode visualization (semi-transparent)
 - Real-time position tracking with mouse movement
-- Rotation with spacebar (45° increments)
+
+- Ghost mode visualization (semi-transparent)
 - Placement validation using board manager
+- Rotation with spacebar (45° increments)
 - Cancellation with right-click or ESC key
 
 **Signals:**
@@ -78,12 +81,12 @@ Added collision detection for raycast selection.
    - Player left-clicks to place
    - Selector validates placement using BoardManager3D._can_place_tetromino()
    - If valid:
-     - Updates board manager occupied cells
+	 - Updates board manager occupied cells
-     - Tetromino exits ghost mode
+	 - Tetromino exits ghost mode
-     - Signals emit `selection_placed`
+	 - Signals emit `selection_placed`
    - If invalid:
-     - Tetromino snaps back to original position
+	 - Tetromino snaps back to original position
-     - Reverts to original rotation
+	 - Reverts to original rotation
 
 5. **Cancellation**
    - Player right-clicks or presses ESC

resources/data/tetrominos/i_piece.tres

@@ -1,7 +1,9 @@
-[gd_resource type="Resource" script_class="TetrominoDefinition" load_steps=2 format=3 uid="uid://curn7voye0ewx"]
+[gd_resource type="Resource" script_class="TetrominoDefinition" load_steps=3 format=3 uid="uid://curn7voye0ewx"]
 
 [ext_resource type="Script" uid="uid://p168a1urs4im" path="res://scripts/tetromino_definition.gd" id="1_suu2q"]
+[ext_resource type="ArrayMesh" uid="uid://dev1jigsm4i4e" path="res://assets/models/MSH_1x2_Orizzontale.res" id="1_tot0g"]
 
 [resource]
 script = ExtResource("1_suu2q")
+mesh = ExtResource("1_tot0g")
 metadata/_custom_type_script = "uid://p168a1urs4im"

resources/data/tetrominos/t_piece.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="TetrominoDefinition" load_steps=3 format=3 uid="uid://cqgsjnof4dly0"]
+
+[ext_resource type="Script" uid="uid://p168a1urs4im" path="res://scripts/tetromino_definition.gd" id="1_0geyk"]
+[ext_resource type="ArrayMesh" uid="uid://5jb2cluw5746" path="res://assets/models/MSH_T_Corta.res" id="1_il264"]
+
+[resource]
+script = ExtResource("1_0geyk")
+mesh = ExtResource("1_il264")
+metadata/_custom_type_script = "uid://p168a1urs4im"

scenes/board/board.tscn

@@ -1,8 +1,9 @@
-[gd_scene load_steps=5 format=3 uid="uid://j3vihw63lw7q"]
+[gd_scene load_steps=6 format=3 uid="uid://j3vihw63lw7q"]
 
 [ext_resource type="Script" uid="uid://bvxt8mmibr1uj" path="res://scripts/board_manager.gd" id="1_jnyf0"]
 [ext_resource type="PackedScene" uid="uid://btdnshtrnejt" path="res://scenes/board/tetromino.tscn" id="2_jnyf0"]
 [ext_resource type="Script" uid="uid://bv7xi75mklk7d" path="res://scripts/tetromino_selector.gd" id="3_jnyf0"]
+[ext_resource type="Resource" uid="uid://cqgsjnof4dly0" path="res://resources/data/tetrominos/t_piece.tres" id="3_q07he"]
 
 [sub_resource type="PlaneMesh" id="PlaneMesh_s78fa"]
 size = Vector2(1, 1)
@@ -25,6 +26,7 @@ mesh = SubResource("PlaneMesh_s78fa")
 [node name="TetrominoContainer" type="Node3D" parent="."]
 
 [node name="Tetromino" parent="TetrominoContainer" instance=ExtResource("2_jnyf0")]
+resource = ExtResource("3_q07he")
 
 [node name="TetrominoSelector" type="Node3D" parent="."]
 script = ExtResource("3_jnyf0")

scenes/board/tetromino.tscn

@@ -1,14 +1,10 @@
-[gd_scene load_steps=6 format=3 uid="uid://btdnshtrnejt"]
+[gd_scene load_steps=5 format=3 uid="uid://btdnshtrnejt"]
 
 [ext_resource type="Script" uid="uid://c8041v2usigk4" path="res://scripts/tetromino.gd" id="1_hprdj"]
 [ext_resource type="Resource" uid="uid://curn7voye0ewx" path="res://resources/data/tetrominos/i_piece.tres" id="2_f3wyc"]
-[ext_resource type="ArrayMesh" uid="uid://e1oj3t6audj3" path="res://assets/models/MSH_1x3.res" id="3_f3wyc"]
+[ext_resource type="ArrayMesh" uid="uid://5jb2cluw5746" path="res://assets/models/MSH_T_Corta.res" id="3_f3wyc"]
-
-[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_f3wyc"]
-albedo_color = Color(1, 0, 0, 1)
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_f3wyc"]
-size = Vector3(3.0031738, 1, 1)
 
 [node name="Tetromino" type="Node3D"]
 script = ExtResource("1_hprdj")
@@ -19,7 +15,6 @@ mesh_color = Color(1, 0, 0, 1)
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="Visuals"]
 layers = 2
-material_override = SubResource("StandardMaterial3D_f3wyc")
 mesh = ExtResource("3_f3wyc")
 skeleton = NodePath("../..")
 
@@ -28,5 +23,8 @@ collision_layer = 16
 collision_mask = 0
 
 [node name="CollisionShape3D" type="CollisionShape3D" parent="SelectionArea"]
-transform = Transform3D(-4.371139e-08, 0, 1, 0, 1, 0, -1, 0, -4.371139e-08, -1.6541168e-10, 0.49949223, -0.0037841797)
 shape = SubResource("BoxShape3D_f3wyc")
+
+[connection signal="input_event" from="SelectionArea" to="." method="_on_selection_area_input_event"]
+[connection signal="mouse_entered" from="SelectionArea" to="." method="_on_selection_area_mouse_entered"]
+[connection signal="mouse_exited" from="SelectionArea" to="." method="_on_selection_area_mouse_exited"]

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()
+	_initialize_material()
-	#_set_mesh_representation()
+	_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
 
@@ -44,17 +49,11 @@ 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.
 func get_grid_cells(at_position: Vector3i = grid_position) -> PackedVector3Array:
 	var result = PackedVector3Array()
@@ -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:
+#func _input(event: InputEvent) -> void:
-	if event is InputEventMouseButton:
+	#if event is InputEventMouseButton:
-		if event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+		#if event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
-			_handle_left_click()
+			#_handle_left_click()
-		elif event.pressed and event.button_index == MOUSE_BUTTON_RIGHT:
+		#elif event.pressed and event.button_index == MOUSE_BUTTON_RIGHT:
-			_handle_right_click()
+			#_handle_right_click()
-	
+	#
-	if _selected_tetromino and event is InputEventMouseMotion:
+	#if _selected_tetromino and event is InputEventMouseMotion:
-		_update_ghost_position()
+		#_update_ghost_position()
-	
+	#
-	if _selected_tetromino:
+	#if _selected_tetromino:
-		if event.is_action_pressed("ui_select"):  # Spacebar
+		#if event.is_action_pressed("ui_select"):  # Spacebar
-			_rotate_ghost()
+			#_rotate_ghost()
-		elif event.is_action_pressed("ui_cancel"):  # ESC
+		#elif event.is_action_pressed("ui_cancel"):  # ESC
-			_cancel_selection()
+			#_cancel_selection()
 
 
-## Handles left mouse click for selection or placement.
+### Handles left mouse click for selection or placement.
-func _handle_left_click() -> void:
+#func _handle_left_click() -> void:
-	if _selected_tetromino:
+	#if _selected_tetromino:
-		# Try to place the ghost tetromino
+		## Try to place the ghost tetromino
-		_place_selection()
+		#_place_selection()
-		return
+		#return
-	
+	#
-	# Try to select a tetromino
+	## Try to select a tetromino
-	var tetromino = _raycast_tetromino()
+	#var tetromino = _raycast_tetromino()
-	if tetromino:
+	#if tetromino:
-		_select_tetromino(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.
+### Raycasts from mouse position to find a tetromino.
-func _raycast_tetromino() -> Tetromino:
+#func _raycast_tetromino() -> Tetromino:
-	if not camera:
+	#if not camera:
-		return null
+		#return null
-	
+	#
-	var mouse_pos = get_viewport().get_mouse_position()
+	#var mouse_pos = get_viewport().get_mouse_position()
-	var from = camera.project_ray_origin(mouse_pos)
+	#var from = camera.project_ray_origin(mouse_pos)
-	var to = from + camera.project_ray_normal(mouse_pos) * 10000.0
+	#var to = from + camera.project_ray_normal(mouse_pos) * 10000.0
-	
+	#
-	var space_state = get_world_3d().direct_space_state
+	#var space_state = get_world_3d().direct_space_state
-	var collision_mask = 0xFFFFFFFF # Hit all layers
+	#var collision_mask = 0xFFFFFFFF # Hit all layers
-	var query = PhysicsRayQueryParameters3D.create(from, to, collision_mask)
+	#var query = PhysicsRayQueryParameters3D.create(from, to, collision_mask)
-	query.collide_with_areas = true
+	#query.collide_with_areas = true;
-	
+	#
-	var result = space_state.intersect_ray(query)
+	#var result = space_state.intersect_ray(query)
-	
+	#
-	if result and result.get("collider"):
+	#if result and result.get("collider"):
-		var collider = result["collider"]
+		#var collider = result["collider"]
-		# Walk up the node tree to find a Tetromino
+		## Walk up the node tree to find a Tetromino
-		var node = collider
+		#var node = collider
-		while node:
+		#while node:
-			if node is Tetromino:
+			#if node is Tetromino:
-				return node
+				#return node
-			node = node.get_parent()
+			#node = node.get_parent()
-	else:
+	#else:
-		print_debug("Raycast hit nothing")
+		#print_debug("Raycast hit nothing")
-	
+	#
-	return null
+	#return null
 
 
 ## Selects a tetromino and converts it to ghost mode.