Okay, here's my How-To guide on how to easily get ladders into your games:
- Download the "Ladder and Water Pack" pack. To do this, open up Stencyl, and click on the big "StencylForge" button on the top bar. Then do a search (top-right of screen) for "Ladder and Water Pack".
- Go to the Actor Type for your playable character, and then go to the Behaviors tab. On the bottom left of the screen, click on the "+ Add Behavior" button, and select the "Climbing" behavior. Now just configure the behavior.
- Now we need to add ladders. First, if you have some ladder sprites, add it to your levels and make sure that it's not collideable. For instance, my ladder sprites were imported as part of a Tileset, so I had to edit the Collision Bounds for those tiles to be "No Collisions". Next, add your fake ladders to a Scene so that we can test them out.
- In the Scene Editor, select the Add Region tool from the toolbar on the left (it looks like a dark blue square with a green plus sign on its bottom-right corner, and if you mouse over it long enough, a tooltip pops up that says "Add Region (Box)".). Draw a rectangle over your fake ladders, but don't worry about being super accurate. Once you've drawn the rectangle, click on the region you just created, and on the right side of the screen, you'll see that you can now fine-tune the dimensions of the box if you want to be more accurate. But here's the important part: make sure the name of your region is "Ladder".
And that's it! The player will start "climbing" the ladder once they go "Up" while colliding with it, and make sure your ladder movement speed is something other than zero or else it might appear to not work.
Remember that your ladder sprites and the ladder collision regions are not linked to each other. You can easily view your regions at any time in the Scene Editor by choosing the Working Mode that looks like the outline of a square and whose tooltip reads "Work only with Regions". So if you want to add, move, or delete a ladder, remember that you have to change both the visuals and the collision region separately.
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