I have a menu from which you can click and drag things into the game. However, if the mouse hits something else, they are both brought to the mouse position and moved together and cannot be seperated!
imageshack.us/photo/my-images/233/problemfg.png/
The image above demonstrates the problem. I can click on the text at the top left to make a new blue block, but when I click + drag it across the screen, if the mouse goes over another blue block, it will pick it up too and those two blue blocks will be forever combined at the same position.
I tried already to use a bool to say the mouse button is already pressed, but it seems to not let you click and drag anything at all when you do that method.