Alright so the mechanic theme for this contest has been chosen and we’d like to explain what the theme actually means. And some of the cool things you can do with it.

First off what are “Monster LED Pads”. Well in order to answer that let’s talk about LED Pads first. LED Pads are an entity that you often use in conjunction with LED Boxes and LED Doors like in the image below:

The idea behind is the door opens when all of the LED Pads are covered with LED Boxes like this:

The color of the LED Pad/Box/Door matter so that you can make puzzles like the one below:

That’s all well and good. But what the heck is a “Monster LED Pad”? Well, it’s an LED Pad that lights up when the appropriate color monster is on top of it:

One of the options inside the LED Pad is “Required Type”:

In this contest the goal is to use any of the Require Types from “Any Monster” down:

So with the help of a red skeleton we can make a puzzle where the LED Door opens when the skeleton is on the red skeleton LED Pad:

You’ll notice I had to add some carpet to get the skeleton to stop moving once he’s on top of the pad. LED Pads do not light up for entities that are moving across them. The entity has to stop on top of the pad in order for it to trigger:

With most monsters carpet is a good way to solve this. You can also use the new occlusion entities which stop monsters:

Another clever way is to use a 4 sided Rail with only the inner edge enabled:

This rail will also trap the princess if she steps on it:

To prevent this you could set up a rail that gets triggered by the monster walking into the space. In order to do this first disable the Rail’s inner and outer edges:

Then set “Trigger Type” to “Toggle Both”:

Set the group number to a group that isn’t currently in use. In this case I’m using group 3:

Now once something triggers group 3 the rail will change from being something you can walk over freely to being a square trap for anything inside of it. Place the rail on top of the LED Pad:

Now we have to trigger the group when the monster walk on top of the pad. There are lot’s of different trigger options we could use (including the LED Pad itself) but I’m going to use a “Sensor” entity which can detect many different types of entities when they enter or leave a rectangular space:

To make this work I set the Sensor to be 1 width and 1 height so it can fit nicely on top of the LED Pad. I set the “Detect” option to “Monsters” and made sure the “On Enter” option was set so that it will trigger only when a monster steps onto the pad. And I set the group number to 3 so it will trigger our Rail trap:

And of course place the sensor on top of the LED Pad and Rail:

Now we can walk over the Monster’s LED Pad as if the rail wasn’t there but the second a monster walks onto the LED Pad the rail will become solid and trap the monster on the LED Pad:

That’s it for this tutorial for now. There are whole ton of options that you can play with on LED Pads, LED Doors, and of Course the Monsters themselves. If you run into any specific questions about what each option does don’t hesitate to comment on this post or ask us on Discord

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