Launch your favorite map editor now (e.g. Doom Builder), create a new ZDoom/GZDoom/Skulltag map, open the map scripts and paste the whole script into the empty script lump. After compiling, we are almost ready to start mapping.

The "aircontrol" part gives the player more power over the moving direction if you are jumping, the "gravity" simply sets the jumping height and prevents the player from falling too fast. The "secretnext" line makes sure that you enter the BONUS map as soon as you have collected 100 Blood Diamonds (bonus items in Pogostick).

(camera direction)

Later I will also explain a way to walk around corners and make the camera automatically change it's direction but now let's talk about the easy stuff.

And this is how our two rooms look ingame now

But that's not exactly how we want it to look, isn't it? The areas that are marked "red" should actually be black. Reducing the sector's light level to 0 might be a solution but on some monitors and GL settings you can still see the textures, although they are almost pitch black. For pogostick, I simplay added a new texture called "BLACK" that is simply a black block, 64x64 pixels. Use this to make the front sector totally disappear.

The black void is there, the camera can move properly and the illusion is done. Last but not least, make sure that all the lines between the black void and the actual room are impassible and sound blocking so you cannot fall of the ledge and that other monsters can't hear you. Let's proceed, detail the room and continue with the next step.

Save the map and launch it with the pogostick resource included. If you have set up everything correctly, your display should look something like this

The camera moves automatically with the player's movement? You can see the hud and the crosshair? You can move with the corresponding keys? (keypad) Then everything is set up and you can continue with mapping, well done and good luck with your own Pogostick map :)

Add ACS_Execute (action special 80) to your teleport lines, activating the special 255. To define the destination, simply add the TID of the mapspot or teleport destination into the first argument of the action special.

What we have here is a hallway that has a 90 degree corner. The only thing we need to do now is to tell the script when the player's movement must switch from west/east to north/south and the camera's angle must be changed by 90 degrees anticlockwise. Difficult for the coder, easy implemention for the mapper.

Place "Actor enters Sector" things (doomednum 9998) to the blue sector/s and to the purple sector/s and make them activate script 253.

Now you only need to add the new angle to the first argument of ACS_Execute and you're done (angles for the camera facing north = 0, facing west = 64, facing south = 128, facing east = 192), time to try if it is working.

By the way, you are not limited to these 4 angles, every other number is also possible, be creative.

Also, to make things easier and more obvious for the player, please take the advantage of sector based jump pointers and thing based action pointers.

The first one - the action pointers - are there to make sure that the player actually knows when to use the "use" button and which key he needs to use an object (there are 8 pointers, 2 directions for each color including green) as ingame messages won't appear because of the 3rd person camera. The second one - the jump pointers - are there to show the player in which direction he has actually to jump. This makes sense for large scale jumps or places where it is hard to get the right direction for a larger jump. For both things, take the ingame maps as reference.