build preview update

Scripts/build_object.gd

@@ -0,0 +1,29 @@
+extends Node3D
+
+var meshInstance: MeshInstance3D
+var default_materials
+
+#var build_material
+@onready var build_material = load("res://Shaders/build_transparent.gdshader")
+
+func _ready() -> void:
+	default_materials = Array()
+	meshInstance = $DoubleBeds
+	default_materials.resize(meshInstance.get_surface_override_material_count())
+	set_default_materials()
+	Global.preview_created.connect(_on_preview_create)
+	print(build_material)
+
+func set_default_materials():
+	for i in meshInstance.get_surface_override_material_count():
+		default_materials[i] = meshInstance.get_surface_override_material(i)
+
+
+func set_green_color():
+	for i in meshInstance.get_surface_override_material_count():
+		meshInstance.set_surface_override_material(i, Global.build_material)
+	
+
+
+func _on_preview_create():
+	set_green_color()