- Ladders
- Water
- Checkpoints
- Teleporters
- Item boxes (think mario)
There will probably be more, I just haven't thought of them yet.
I'll probably try to get ladders working tomorrow, and possibly try water. Water is going to be tricky to make.
It's not making the player control differently when they're in water. Actually, that's the easy part. It's making the player drawn differently. The water itself will be drawn with an alpha value, so that it is semi transparent. However, I already realize there will be a problem drawing the player when he jumps into water. When the player will be drawn in water, it won't look like it's in water, because the player sprite is automatically drawn over any tile sprites. The tricky part will be making it appear as if the player is in the water.
-----------------------------------------------------------------------------
On something totally unrelated, playing around with Civilization 4 modding:
Screenshot 1
Screenshot 2
Of course if you are using DX or OGL, you could just use the depth buffer, but IIRC you are using SDL, so disregard that.