This makes it hard to place exactly one corpse: I have to make sure my click lasts exactly one in-game tick. In order to be able to do that, I have to deliberately slow the game down: (Editor can only slow it down to 15fps which is not quite enough...)
- Pause the game
- Set up tons of "blood-explosion-huge" entities
- Start the game
- Watch the fps drop under 5 and listen to the computer coolers spin
- Finally place the corpse while being careful not to place more than one... The sound of it helps.