floor meshing

Scripts/Space/SpaceRegion.gd

@@ -17,6 +17,28 @@ func _generate_geometry(space: Space, looked_from_inside: bool) -> Node3D:
 	var geometry := MeshInstance3D.new()
 	geometry.name = name
 
+	var mesh := ArrayMesh.new()
+	mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, _generate_wall_arrays(space, looked_from_inside))
+	mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, _generate_floor_arrays(space))
+
+	var wall_material := StandardMaterial3D.new()
+	wall_material.albedo_texture = wall_texture
+	mesh.surface_set_material(0, wall_material)
+
+	var floor_material := StandardMaterial3D.new()
+	floor_material.albedo_texture = floor_texture
+	mesh.surface_set_material(1, floor_material)
+
+	geometry.mesh = mesh
+
+	for child in get_children():
+		if child is SpaceRegion:
+			geometry.add_child(child._generate_geometry(space, not looked_from_inside))
+
+	return geometry
+
+
+func _generate_wall_arrays(space: Space, looked_from_inside: bool) -> Array:
 	var polygon = self.polygon
 	var polygon_pairs = Array()
 	for i in range(-1, polygon.size() - 1):
@@ -31,22 +53,8 @@ func _generate_geometry(space: Space, looked_from_inside: bool) -> Node3D:
 	arrays.resize(Mesh.ARRAY_MAX)
 	arrays[Mesh.ARRAY_VERTEX] = vertices
 	arrays[Mesh.ARRAY_TEX_UV] = uvs
-
-	var mesh := ArrayMesh.new()
-	mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, arrays)
-
-	var new_material := preload("res://Scenes/RegionMaterial.tres")
-	new_material.albedo_texture = wall_texture
-
-	mesh.surface_set_material(0, new_material)
-
-	geometry.mesh = mesh
-
-	for child in get_children():
-		if child is SpaceRegion:
-			geometry.add_child(child._generate_geometry(space, not looked_from_inside))
-
-	return geometry
+	
+	return arrays
 
 
 func _push_line(space: Space,
@@ -79,3 +87,26 @@ func _push_line(space: Space,
 	uvs.append(Vector2(1, 0))
 	uvs.append(Vector2(0, 1))
 	uvs.append(Vector2(0, 0))
+
+
+func _generate_floor_arrays(space: Space) -> Array:
+	var triangulation := Geometry2D.triangulate_polygon(self.polygon)
+	var vertices := PackedVector3Array()
+	var uvs := PackedVector2Array()
+	vertices.resize(triangulation.size())
+	uvs.resize(triangulation.size())
+
+	for i in range(triangulation.size()):
+		vertices[i] = Vector3(
+			self.polygon[triangulation[i]].x * space.unit_scale,
+			elevation * space.unit_scale,
+			self.polygon[triangulation[i]].y * space.unit_scale,
+		)
+		uvs[i] = self.polygon[triangulation[i]] * space.unit_scale
+
+	var arrays := Array()
+	arrays.resize(Mesh.ARRAY_MAX)
+	arrays[Mesh.ARRAY_VERTEX] = vertices
+	arrays[Mesh.ARRAY_TEX_UV] = uvs
+
+	return arrays