Show only the shadow of units
Achieving such an effect really isn't that hard. Simply follow this little step-by-step tutorial.
- Select the actor of the unit you want to only show the shadow for
- Go to the Events section of the actor
- Right click anywhere in the left hand box and select Add Event
- Change the Msg Type to Actor Creation, leave all other fields as any
- Select the action (the item below directly below the one selected)
- Change Msg Type to Set Opacity
- Change Opacity to 0.0001
Note: Setting Opacity to 0 will not render any shadow, which isn't what we want.