Fix jumps in scale and rotation when pinching
Fix jumps in scale and rotation when pinching

When pressing with two fingers at once and pinching,  an old coordinate contained in the curr_state dictionary gets added to the base_state dictionary, which causes unintended jumps in both scale and rotation. By clearing base_state the script functions as intended.
godotengine/godot-demo-projects,godotengine/godot-demo-projects,godotengine/godot-demo-projects