This trap is up to you as you build up the tiles you decide which are safe to walk and which are not. All you have to do is set the name of the path tile to safe and your character will be able to walk it. If on the other hand you stray from the 'safe' path you will get hurt. It is up to you to decide if it is worth it.
Here is a video for you to have a look at:
You can make this trap as big or as small as you like, you have 16 tiles that can be set as safe or not to place around.
HP Pavilion Laptop, AMD A8-4555M APU with Radeon(tm) Graphics HD Graphics 1.6GHz, 8GB Memory, 64 Bit Operating System (Windows 10), 1 TB Hard Drive.
I've got something to say - It's better to burn out than fade away.