Ship building basics

project.godot

@@ -11,7 +11,7 @@ config_version=5
 [application]
 
 config/name="space_simulation"
-run/main_scene="uid://dogqi2c58qdc0"
+run/main_scene="uid://bvogqgqig1hps"
 config/features=PackedStringArray("4.4", "Forward Plus")
 config/icon="res://icon.svg"
 

scenes/ship/builder/module.tscn

@@ -0,0 +1,12 @@
+[gd_scene load_steps=2 format=3 uid="uid://cm0rohkr6khd1"]
+
+[ext_resource type="Script" uid="uid://6co67nfy8ngb" path="res://scenes/ship/builder/module_builder_controller.gd" id="1_b1h2b"]
+
+[node name="Module" type="RigidBody2D"]
+script = ExtResource("1_b1h2b")
+
+[node name="StructuralContainer" type="Node2D" parent="."]
+
+[node name="HullVolumeContainer" type="Node2D" parent="."]
+
+[node name="AtmosphereVisualizer" type="Node2D" parent="."]

scenes/ship/builder/module_builder_controller.gd

@@ -1,109 +1,184 @@
-# module_builder_controller.gd
-# The root script for a player-constructed ship module. This is a RigidBody2D that
-# acts as a container for all the player-placed structural pieces.
+@tool
 class_name ModuleBuilderController
 extends RigidBody2D
 
-# These nodes should be children of this RigidBody2D in the scene tree.
+# --- Editor Tool Properties ---
+var available_pieces: Dictionary = {}
+@export var piece_to_place: String = "Refresh":
+	set(value):
+		piece_to_place = value
+		if is_instance_valid(current_piece_preview):
+			current_piece_preview.queue_free()
+		_create_piece_preview()
+
+@export var grid_size: int = 50.0
+
+# --- Tool State ---
+var current_piece_preview: StructuralPiece
+var piece_rotation: int = 0  # 0, 90, 180, 270 degrees
+
 @onready var structural_container: Node2D = $StructuralContainer
 @onready var hull_volume_container: Node2D = $HullVolumeContainer
-@onready var atmosphere_visualizer: Node2D = $AtmosphereVisualizer # For "gas leak" effects
+@onready var atmosphere_visualizer: Node2D = $AtmosphereVisualizer
 
 enum ModuleState { IN_CONSTRUCTION, SEALED, PRESSURIZED, BREACHED }
 
 var current_state: ModuleState = ModuleState.IN_CONSTRUCTION
 
-# --- Public API for In-Game Construction ---
+func _get_property_list() -> Array:
+	var properties = []
+	
+	var piece_names = available_pieces.keys()
+	piece_names.sort()
+	piece_names.insert(0, "Refresh")
 
-# Called by the player's construction tool to add a wall, plate, etc.
-func add_structural_piece(piece_scene: PackedScene, pos: Vector2, rot: float):
-	var piece = piece_scene.instantiate() as Node2D
-	piece.position = pos
-	piece.rotation = rot
-	structural_container.add_child(piece)
-	# Every time the structure changes, we must update the module's physics.
+	properties.append({
+		"name": "piece_to_place",
+		"type": TYPE_STRING,
+		"hint": PROPERTY_HINT_ENUM,
+		"hint_string": ",".join(piece_names),
+	})
+	
+	properties.append({
+		"name": "grid_size",
+		"type": TYPE_INT,
+		"hint": PROPERTY_HINT_RANGE,
+		"hint_string": "10,200,10"
+	})
+	
+	return properties
+	
+# The fix: This function tells the editor we want to handle all input events.
+func _handles_input_event(event: InputEvent) -> bool:
+	return Engine.is_editor_hint()
+
+func _ready() -> void:
+	if Engine.is_editor_hint():
+		_scan_for_pieces()
+		set_physics_process(false)
+
+func _enter_tree():
+	if Engine.is_editor_hint():
+		if not is_instance_valid(current_piece_preview) and piece_to_place != "Refresh":
+			_create_piece_preview()
+		
+func _exit_tree():
+	if Engine.is_editor_hint() and is_instance_valid(current_piece_preview):
+		current_piece_preview.queue_free()
+
+func _input(event: InputEvent) -> void:
+	print("foo")
+	if not Engine.is_editor_hint():
+		return
+	
+	if not is_instance_valid(current_piece_preview):
+		return
+	
+	if event is InputEventMouseMotion:
+		var mouse_pos_in_world = get_viewport().get_mouse_position()
+		var snapped_pos = _snap_to_grid(mouse_pos_in_world)
+		current_piece_preview.position = to_local(snapped_pos)
+		get_viewport().set_input_as_handled()
+	
+	if event.is_action_pressed("ui_rotate"):
+		piece_rotation = (piece_rotation + 90) % 360
+		current_piece_preview.rotation_degrees = piece_rotation
+		get_viewport().set_input_as_handled()
+	
+	if event is InputEventMouseButton and event.is_pressed():
+		if event.button_index == MOUSE_BUTTON_LEFT:
+			_place_piece_from_preview()
+			_create_piece_preview()
+			get_viewport().set_input_as_handled()
+		elif event.button_index == MOUSE_BUTTON_RIGHT:
+			if is_instance_valid(current_piece_preview):
+				current_piece_preview.queue_free()
+			_create_piece_preview()
+			get_viewport().set_input_as_handled()
+
+func _scan_for_pieces():
+	available_pieces.clear()
+	var directory = DirAccess.open("res://scenes/ship/builder/")
+	if directory:
+		directory.list_dir_begin()
+		var file_name = directory.get_next()
+		while file_name != "":
+			if file_name.ends_with(".tscn"):
+				var path = "res://scenes/ship/builder/" + file_name
+				var scene = load(path)
+				if scene and scene is PackedScene:
+					var instance = scene.instantiate()
+					if instance is StructuralPiece:
+						available_pieces[file_name.trim_suffix(".tscn")] = scene
+					instance.queue_free()
+			file_name = directory.get_next()
+		directory.list_dir_end()
+		notify_property_list_changed()
+	else:
+		print("Could not open directory: res://scenes/ship/builder/")
+
+func _create_piece_preview():
+	if is_instance_valid(current_piece_preview):
+		current_piece_preview.queue_free()
+	
+	if available_pieces.has(piece_to_place):
+		var piece_scene: PackedScene = available_pieces[piece_to_place]
+		current_piece_preview = piece_scene.instantiate() as StructuralPiece
+		add_child(current_piece_preview)
+		current_piece_preview.is_preview = true
+		current_piece_preview.set_physics_process(false)
+
+func _place_piece_from_preview():
+	if not is_instance_valid(current_piece_preview):
+		return
+		
+	var placed_piece = available_pieces[piece_to_place].instantiate() as StructuralPiece
+	placed_piece.position = current_piece_preview.position
+	placed_piece.rotation_degrees = current_piece_preview.rotation_degrees
+	
+	placed_piece.is_preview = false
+	
+	structural_container.add_child(placed_piece)
 	_recalculate_physics_properties()
 
-# Called by the player to define the area that should contain an atmosphere.
-func add_hull_volume(volume_scene: PackedScene, pos: Vector2):
-	var volume = volume_scene.instantiate() as Node2D
-	volume.position = pos
-	hull_volume_container.add_child(volume)
-
-# This function checks if every defined room (Hull Volume) is properly sealed.
-func check_for_seal() -> bool:
-	if hull_volume_container.get_child_count() == 0:
-		print("Module integrity check failed: No hull volumes defined.")
-		return false
-		
-	var all_sealed = true
-	for volume in hull_volume_container.get_children():
-		if volume is HullVolume:
-			if not volume.check_seal():
-				all_sealed = false
-				# The volume can be responsible for showing its own leak effect.
-				if atmosphere_visualizer.has_method("show_leak_at"):
-					atmosphere_visualizer.show_leak_at(volume.get_leak_position())
-
-	if all_sealed:
-		print("Module is sealed! Ready for pressurization and component installation.")
-		current_state = ModuleState.SEALED
-		return true
-	else:
-		print("One or more hull volumes reported a leak.")
-		current_state = ModuleState.IN_CONSTRUCTION
-		return false
-
-# --- Internal Physics Management ---
-
-# Recalculates the total mass, center of mass, and combines all collision shapes.
+func _snap_to_grid(pos: Vector2) -> Vector2:
+	return Vector2(
+		round(pos.x / grid_size) * grid_size,
+		round(pos.y / grid_size) * grid_size
+	)
+	
 func _recalculate_physics_properties():
 	print("Recalculating physics properties...")
-	
-	# 1. Sum masses and find a weighted center of mass
 	var total_mass: float = 0.0
-	var total_mass_pos = Vector2.ZERO
 	var all_structural_pieces = structural_container.get_children()
 
 	for piece in all_structural_pieces:
 		if piece is StructuralPiece:
 			total_mass += piece.piece_mass
-			# The position is relative to the structural_container.
-			total_mass_pos += piece.position * piece.piece_mass
-			
+	
 	if total_mass > 0:
-		var new_center_of_mass = total_mass_pos / total_mass
-		# We set the center of mass in the RigidBody2D.
-		self.set_center_of_mass(new_center_of_mass)
 		self.mass = total_mass
+		self.set_center_of_mass(Vector2.ZERO)
 		
-		# --- Combine all collision shapes into one for the RigidBody ---
-		# This is a key part of your design, allowing for efficient physics calculations.
-		# Note: This is an expensive operation and should only be done on demand.
-		
-		# Remove any existing collision shapes from this RigidBody2D
-		for child in get_children():
-			if child is CollisionShape2D or child is CollisionPolygon2D:
-				child.queue_free()
-				
 		var shape = ConcavePolygonShape2D.new()
 		var all_points: PackedVector2Array = []
 		
-		# Iterate through all structural pieces to get their collision polygons
 		for piece in all_structural_pieces:
 			if piece is StructuralPiece:
 				for child in piece.get_children():
 					if child is CollisionPolygon2D:
-						# Get the points in the structural piece's local space
 						var piece_points = child.polygon
 						var piece_xform = piece.transform
 						
-						# Transform the points to the module's local space
 						for p in piece_points:
 							all_points.append(piece_xform.xform(p))
 							
 		shape.set_segments(all_points)
 		
+		for child in get_children():
+			if child is CollisionShape2D or child is CollisionPolygon2D:
+				child.queue_free()
+				
 		var new_collision_shape = CollisionShape2D.new()
 		new_collision_shape.shape = shape
 		add_child(new_collision_shape)

scenes/ship/builder/pieces/bulkhead.tscn

@@ -0,0 +1,28 @@
+[gd_scene load_steps=3 format=3 uid="uid://d3hitk62fice4"]
+
+[ext_resource type="Script" uid="uid://b7f8x2qimvn37" path="res://scenes/ship/builder/pieces/structural_piece.gd" id="1_1wp2n"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_1wp2n"]
+size = Vector2(10, 100)
+
+[node name="Bulkhead" type="StaticBody2D"]
+collision_layer = 5
+script = ExtResource("1_1wp2n")
+metadata/_custom_type_script = "uid://b7f8x2qimvn37"
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("RectangleShape2D_1wp2n")
+
+[node name="ColorRect" type="ColorRect" parent="."]
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -5.0
+offset_top = -50.0
+offset_right = 5.0
+offset_bottom = 50.0
+grow_horizontal = 2
+grow_vertical = 2
+color = Color(0.6, 0.6, 0.6, 1)

scenes/ship/builder/pieces/hullplate.tscn

@@ -0,0 +1,28 @@
+[gd_scene load_steps=3 format=3 uid="uid://bho8x10x4oab7"]
+
+[ext_resource type="Script" uid="uid://b7f8x2qimvn37" path="res://scenes/ship/builder/pieces/structural_piece.gd" id="1_ecow4"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_1wp2n"]
+size = Vector2(100, 100)
+
+[node name="Hullplate" type="StaticBody2D"]
+collision_mask = 0
+script = ExtResource("1_ecow4")
+metadata/_custom_type_script = "uid://b7f8x2qimvn37"
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("RectangleShape2D_1wp2n")
+
+[node name="ColorRect" type="ColorRect" parent="."]
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -50.0
+offset_top = -50.0
+offset_right = 50.0
+offset_bottom = 50.0
+grow_horizontal = 2
+grow_vertical = 2
+color = Color(0.4, 0.4, 0.4, 1)

scenes/ship/builder/pieces/structural_piece.gd

@@ -1,5 +1,4 @@
-# structural_piece.gd
-# A script for the individual, player-placeable pieces like walls, floors, and girders.
+@tool
 class_name StructuralPiece
 extends StaticBody2D
 
@@ -12,5 +11,16 @@ extends StaticBody2D
 # The health of this specific piece.
 @export var health: float = 100.0
 
+# This setter is triggered by the editor.
+var is_preview: bool = false:
+	set(value):
+		is_preview = value
+		if is_preview:
+			# Make the piece translucent if it's a preview.
+			modulate = Color(1, 1, 1, 0.5)
+		else:
+			# Make it opaque if it's a permanent piece.
+			modulate = Color(1, 1, 1, 1)
+
 func get_mass() -> float:
 	return piece_mass

scenes/ship/builder/pieces/structural_piece.tscn

@@ -0,0 +1,15 @@
+[gd_scene load_steps=3 format=3 uid="uid://ds4eilbvihjy7"]
+
+[ext_resource type="Script" uid="uid://b7f8x2qimvn37" path="res://scenes/ship/builder/pieces/structural_piece.gd" id="1_6jsoj"]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_jsbwo"]
+
+[node name="StructuralPiece" type="StaticBody2D"]
+script = ExtResource("1_6jsoj")
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("CircleShape2D_jsbwo")
+
+[node name="ColorRect" type="ColorRect" parent="."]
+offset_right = 40.0
+offset_bottom = 40.0

scenes/ship/builder/structural_piece.tscn

@@ -1,6 +0,0 @@
-[gd_scene load_steps=2 format=3 uid="uid://ds4eilbvihjy7"]
-
-[ext_resource type="Script" uid="uid://b7f8x2qimvn37" path="res://scenes/ship/builder/structural_piece.gd" id="1_6jsoj"]
-
-[node name="StructuralPiece" type="StaticBody2D"]
-script = ExtResource("1_6jsoj")

scenes/tests/integrity_test.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=2 format=3 uid="uid://bscabpucsv88k"]
 
-[ext_resource type="PackedScene" path="res://scenes/ship/builder/module_builder.tscn" id="1_h26xi"]
+[ext_resource type="PackedScene" uid="uid://ds3qq4yg8y86y" path="res://scenes/ship/builder/module_builder.tscn" id="1_h26xi"]
 
 [node name="IntegrityTest" type="Node2D"]
 

scenes/tests/ship_building_test.tscn

@@ -1,8 +1,10 @@
 [gd_scene load_steps=2 format=3 uid="uid://bvogqgqig1hps"]
 
-[ext_resource type="PackedScene" uid="uid://d53d4m797g36a" path="res://scenes/ship/builder/module_builder.tscn" id="1_74fwe"]
+[ext_resource type="PackedScene" uid="uid://ds3qq4yg8y86y" path="res://scenes/ship/builder/module_builder.tscn" id="1_74fwe"]
 
 [node name="ShipBuildingTest" type="Node2D"]
 
 [node name="ModuleBuilder" parent="." instance=ExtResource("1_74fwe")]
 position = Vector2(500, 300)
+piece_to_place = "bulkhead"
+piece_to_place = "bulkhead"