Implement material overlay, depends on godotengine/godot#50823, pleas…

…e compile Godot 3.x with that pr to make this work.

Debug.gd

@@ -0,0 +1,7 @@
+extends Control
+
+
+func _process(delta):
+	$Label.text = ""
+	$Label.text += "FPS: %d\n" % Engine.get_frames_per_second()
+	$Label.text += "BuildingPlacer.is_buildable: %s" % [$"../Tools/BuildingTool".is_buildable]

Test_RoadSystem.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=20 format=2]
+[gd_scene load_steps=23 format=2]
 
 [ext_resource path="res://addons/zylann.hterrain/hterrain.gd" type="Script" id=1]
 [ext_resource path="res://addons/zylann.hterrain/hterrain_texture_set.gd" type="Script" id=2]
+[ext_resource path="res://Debug.gd" type="Script" id=3]
 [ext_resource path="res://addons/sairam.quadtree/QuadTreeNode.gd" type="Script" id=4]
 [ext_resource path="res://_terrain_data/data.hterrain" type="Resource" id=5]
 [ext_resource path="res://Road.tres" type="Material" id=6]
@@ -14,6 +15,7 @@
 [ext_resource path="res://roads_system/RoadUpgrade.gd" type="Script" id=13]
 [ext_resource path="res://building_system/building_placer.gd" type="Script" id=14]
 [ext_resource path="res://FullScreen.gd" type="Script" id=15]
+[ext_resource path="res://building_system/building_remover.gd" type="Script" id=16]
 
 [sub_resource type="Resource" id=1]
 script = ExtResource( 2 )
@@ -30,6 +32,10 @@ flags_unshaded = true
 vertex_color_use_as_albedo = true
 albedo_color = Color( 1, 0, 0, 1 )
 
+[sub_resource type="SpatialMaterial" id=6]
+flags_unshaded = true
+vertex_color_use_as_albedo = true
+
 [sub_resource type="SpatialMaterial" id=4]
 flags_transparent = true
 albedo_color = Color( 0, 1, 1, 0.501961 )
@@ -58,6 +64,7 @@ shader_params/u_triplanar = false
 shader_params/u_tile_reduction = Plane( 0, 0, 0, 0 )
 
 [node name="RoadNetwork" type="Spatial" parent="HTerrain"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 128, 0, 128 )
 script = ExtResource( 7 )
 use_astar = true
 immediate_geo_node = NodePath("ImmediateGeometry")
@@ -67,21 +74,21 @@ quad_tree_edge_bezier_node_path = NodePath("QuadTreeNodeEdgeBezier")
 auto_clear_when_draw = false
 
 [node name="GlobalRoadSystemDrawer" type="MeshInstance" parent="HTerrain/RoadNetwork"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.01, 0 )
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -128, 0.01, -128 )
 material_override = ExtResource( 6 )
 script = ExtResource( 11 )
 immediate_geometry_node_path = NodePath("../RoadSystemGeometry")
 
 [node name="ImmediateGeometry" type="ImmediateGeometry" parent="HTerrain/RoadNetwork"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.01, 0 )
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -128, 0.01, -128 )
 material_override = SubResource( 2 )
 
 [node name="RoadSystemGeometry" type="ImmediateGeometry" parent="HTerrain/RoadNetwork"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.3, 0 )
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -128, 0.3, -128 )
 material_override = SubResource( 2 )
 
 [node name="QuadTreeNode" type="Spatial" parent="HTerrain/RoadNetwork"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 128, 0, 128 )
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -128, 0, -128 )
 script = ExtResource( 4 )
 extents = Vector3( 256, 5.464, 256 )
 capacity = 6
@@ -92,7 +99,7 @@ immediate_geo_node_path = NodePath("QuadTreeGeometry")
 material_override = SubResource( 3 )
 
 [node name="QuadTreeNodeEdges" type="Spatial" parent="HTerrain/RoadNetwork"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 128, 0, 128 )
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -128, 0, -128 )
 script = ExtResource( 4 )
 extents = Vector3( 256, 5.464, 256 )
 capacity = 6
@@ -103,7 +110,7 @@ immediate_geo_node_path = NodePath("QuadTreeGeometry")
 material_override = SubResource( 3 )
 
 [node name="QuadTreeNodeEdgeBezier" type="Spatial" parent="HTerrain/RoadNetwork"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 128, 0, 128 )
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -128, 0, -128 )
 script = ExtResource( 4 )
 extents = Vector3( 256, 5.464, 256 )
 capacity = 6
@@ -113,19 +120,20 @@ immediate_geo_node_path = NodePath("QuadTreeGeometry")
 [node name="QuadTreeGeometry" type="ImmediateGeometry" parent="HTerrain/RoadNetwork/QuadTreeNodeEdgeBezier"]
 
 [node name="BuildingNetwork" type="Spatial" parent="HTerrain"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.02, 0 )
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 128, 0.02, 128 )
 
 [node name="Buildings" type="Spatial" parent="HTerrain/BuildingNetwork"]
 
-[node name="QuadTreeBuilding" type="Spatial" parent="HTerrain/BuildingNetwork/Buildings"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 128, 0, 128 )
+[node name="QuadTreeBuilding" type="Spatial" parent="HTerrain/BuildingNetwork"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -128, 0, -128 )
 script = ExtResource( 4 )
 extents = Vector3( 256, 5.464, 256 )
 capacity = 6
 max_levels = 12
 immediate_geo_node_path = NodePath("QuadTreeGeometry")
 
-[node name="QuadTreeGeometry" type="ImmediateGeometry" parent="HTerrain/BuildingNetwork/Buildings/QuadTreeBuilding"]
+[node name="QuadTreeGeometry" type="ImmediateGeometry" parent="HTerrain/BuildingNetwork/QuadTreeBuilding"]
+material_override = SubResource( 6 )
 
 [node name="Camera" parent="." instance=ExtResource( 8 )]
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 20, 3, 20 )
@@ -210,14 +218,30 @@ transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.1, 0 )
 script = ExtResource( 14 )
 road_network_path = NodePath("../../HTerrain/RoadNetwork")
 buildings_path = NodePath("../../HTerrain/BuildingNetwork/Buildings")
-quad_tree_path = NodePath("../../HTerrain/BuildingNetwork/Buildings/QuadTreeBuilding")
+quad_tree_path = NodePath("../../HTerrain/BuildingNetwork/QuadTreeBuilding")
 
 [node name="ImmediateGeometry" type="ImmediateGeometry" parent="Tools/BuildingTool"]
 
+[node name="BuildingRemover" type="Spatial" parent="Tools"]
+script = ExtResource( 16 )
+
 [node name="DirectionalLight" type="DirectionalLight" parent="."]
 transform = Transform( 1, 0, 0, 0, 0.707107, 0.707107, 0, -0.707107, 0.707107, 0, 0, 0 )
 shadow_enabled = true
 
+[node name="Control" type="Control" parent="."]
+anchor_right = 1.0
+anchor_bottom = 1.0
+mouse_filter = 1
+script = ExtResource( 3 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="Label" type="Label" parent="Control"]
+margin_right = 40.0
+margin_bottom = 14.0
+
 [connection signal="graph_changed" from="HTerrain/RoadNetwork" to="HTerrain/RoadNetwork/GlobalRoadSystemDrawer" method="_on_RoadNetwork_graph_changed"]
 [connection signal="graph_changed" from="Tools/RoadTool/RoadNetwork" to="Tools/RoadTool/RoadNetwork/RoadRenderer" method="_on_RoadNetwork_graph_changed"]
 [connection signal="graph_changed" from="Tools/RoadRemover/RoadNetwork" to="Tools/RoadRemover/RoadNetwork/RoadRenderer" method="_on_RoadNetwork_graph_changed"]

building_system/buildable.tres

@@ -0,0 +1,5 @@
+[gd_resource type="SpatialMaterial" format=2]
+
+[resource]
+flags_transparent = true
+albedo_color = Color( 0, 1, 1, 0.247059 )

building_system/building_instance.gd

@@ -4,12 +4,22 @@ class_name BuildingInstance
 var building
 var id
 
+var _mesh_child_index_array = []
+var _collision_child_index_array = []
+
 func get_aabb():
 	var aabb: AABB
-	for child in get_children():
+	for child in get_child(0).get_children():
 		if child is MeshInstance:
 			if !aabb:
 				aabb = child.get_transformed_aabb()
 			else:
-				aabb.merge(child.get_transformed_aabb())
+				aabb = aabb.merge(child.get_transformed_aabb())
 	return aabb
+
+func _ready():
+	for child in get_child(0).get_children():
+		if child is MeshInstance:
+			_mesh_child_index_array.append(child.get_index())
+		elif child is CollisionShape:
+			_collision_child_index_array.append(child.get_index())

building_system/building_network.gd

@@ -0,0 +1,28 @@
+extends Node
+
+
+export(NodePath) var quadtree_pth
+onready var quad_tree = get_node(quadtree_pth) as QuadTreeNode
+
+func get_closest_building(to_position: Vector3, distance: int = 0.5):
+	pass
+
+func add_building(transform: Transform, building: BuildingInstance):
+	pass
+
+func remove_building(building: BuildingInstance):
+	pass
+
+func _get_aabb_for_query(position: Vector3, radius: int = 10, height: int = 20) -> AABB:
+	var mesh_inst = MeshInstance.new()
+	var cylinder = CylinderMesh.new()
+	cylinder.top_radius = radius
+	cylinder.bottom_radius = radius
+	cylinder.height = height
+	mesh_inst.mesh = cylinder
+	var aabb = mesh_inst.get_aabb()
+	aabb.position.x += position.x
+	aabb.position.y += position.y
+	aabb.position.z += position.z
+	mesh_inst.free()
+	return aabb

building_system/building_placer.gd

@@ -6,7 +6,9 @@ onready var road_network = get_node(road_network_path) as RoadNetwork
 export(NodePath) var buildings_path
 onready var buildings = get_node(buildings_path)
 export(NodePath) var quad_tree_path
-onready var quad_tree = get_node(quad_tree_path)
+onready var quad_tree = get_node(quad_tree_path) as QuadTreeNode
+
+var is_buildable = false
 
 var ghost_instance: Spatial
 var enabled
@@ -31,24 +33,41 @@ func _input(event):
 				buildings.remove_child(ghost_instance)
 				ghost_instance.queue_free()
 			ghost_instance = current_building.instance()
+			ghost_instance.scale += Vector3(0.01, 0.01, 0.01)
 			buildings.add_child(ghost_instance)
 
 	if event is InputEventMouseMotion:
 		if current_building:
 			var building_point = _cast_ray_to(event.position)
 			building_point = building_point.snapped(Vector3(0.25, 0, 0.25))
+			var aabb = get_aabb()
+			aabb.position.y += -99
+			aabb.size.y += 99
+			is_buildable = quad_tree.query(aabb)
+#			$ImmediateGeometry.clear()
+#			DrawingUtils.draw_box_with_aabb($ImmediateGeometry, get_aabb())
+			if !is_buildable:
+				# material overlay
+				ghost_instance.get_child(0).get_child(0).material_overlay = preload("res://building_system/buildable.tres")
+			else:
+				ghost_instance.get_child(0).get_child(0).material_overlay = preload("res://building_system/non_buildable.tres")
+#				test_and_set_material_overlay(preload("res://building_system/non_buildable.tres"))
+
+#			quad_tree.draw()
 			if is_vec_nan(building_point):
 				return
 #			print(building_point)
-			var segment = road_network.get_closest_segment(building_point)
+			var segment = road_network.get_closest_segment(building_point, 1)
 			if segment:
 				var closest_point = segment.project_point(building_point)
 				var direction = (closest_point - building_point).normalized()
 
 
 				var point: Vector3 = closest_point + direction * (-segment.road_network_info.width/2 + -1)
+
 				var building_transform = Transform.IDENTITY
 				point.y = 0.02
+				var b_scale = ghost_instance.global_transform.basis.get_scale()
 				building_transform.origin = point
 
 				var a = closest_point - point
@@ -58,7 +77,7 @@ func _input(event):
 				var angle = angle_b - angle_a
 
 				building_transform.basis = building_transform.basis.rotated(Vector3.UP, angle)
-
+				building_transform.basis = building_transform.basis.scaled(b_scale)
 				ghost_instance.global_transform = building_transform
 
 			else:
@@ -82,7 +101,7 @@ func _input(event):
 				var building_transform = Transform.IDENTITY
 				point.y = 0.02
 				building_transform.origin = point
-
+				
 				var a = closest_point - point
 				var b = current_building.door_face_direction
 				var angle_a = atan2(a.z, a.x)
@@ -92,10 +111,41 @@ func _input(event):
 				building_transform.basis = building_transform.basis.rotated(Vector3.UP, angle)
 				var new_building = current_building.instance()
 				buildings.add_child(new_building)
+
+				var b_scale = new_building.global_transform.basis.get_scale()
+				building_transform.basis = building_transform.basis.scaled(b_scale)
+
 				new_building.global_transform = building_transform
+
 				quad_tree.add_body(new_building, new_building.get_aabb())
-				var expanded_aabb = new_building.get_aabb()
-				DrawingUtils.draw_box_with_aabb($"ImmediateGeometry", expanded_aabb)
+#				var expanded_aabb = new_building.get_aabb()
+#				DrawingUtils.draw_box_with_aabb($"ImmediateGeometry", expanded_aabb)
+
+func get_aabb():
+
+	return ghost_instance.get_aabb()
+
+func test_and_set_material(p_material):
+	var test_mesh = ghost_instance.get_child(0).get_child(ghost_instance._mesh_child_index_array[randi() % ghost_instance._mesh_child_index_array.size()]).mesh as Mesh
+	var test_material = test_mesh.surface_get_material(randi() % test_mesh.get_surface_count())
+	if test_material == p_material:
+		for index in current_building._mesh_child_index_array:
+			var child = ghost_instance.get_child(0).get_child(index) as MeshInstance
+			for material_index in range(child.get_surface_material_count()):
+				var material = child.mesh.surface_get_material(material_index)
+				material = p_material
+				child.mesh.surface_set_material(material_index, material)
+
+func test_and_set_material_overlay(p_material):
+	var test_mesh = ghost_instance.get_child(0).get_child(ghost_instance._mesh_child_index_array[randi() % ghost_instance._mesh_child_index_array.size()]).mesh as Mesh
+	var test_material = test_mesh.surface_get_material(randi() % test_mesh.get_surface_count())
+	if test_material == p_material:
+		for index in current_building._mesh_child_index_array:
+			var child = ghost_instance.get_child(0).get_child(index) as MeshInstance
+			for material_index in range(child.get_surface_material_count()):
+				var material = child.mesh.surface_get_material(material_index)
+				material.next_pass = p_material
+				child.mesh.surface_set_material(material_index, material)
 
 #func _process(delta):
 #	print("------------------------------------------")

building_system/building_remover.gd

@@ -0,0 +1,12 @@
+extends Spatial
+
+
+var enabled
+func _input(event):
+	if event is InputEventKey:
+		if event.scancode == KEY_Y and event.pressed:
+			enabled = !enabled
+
+	if event is InputEventMouseMotion:
+		pass
+

building_system/non_buildable.tres

@@ -0,0 +1,5 @@
+[gd_resource type="SpatialMaterial" format=2]
+
+[resource]
+flags_transparent = true
+albedo_color = Color( 1, 0, 0, 0.247059 )