Deep Marsh Tiles 2020-08-16

This script adds in Deep Marsh tiles, the annoying classic from DPPt, which cause the player to sink in and get stuck until they wiggle free.
To use it, you must create a new tile with terrain tag MarshDeep. Remember to change the number if you are already using the default 17.
There's also one other edit to "def bush_depth" in Game_Character.
This line :
Becomes this line :
You could instead edit the line above in it in the same manner if you want the player to sink more into the mud. Or even just make the stuck condition on its own line to have it sink a different amount. Not gonna explain that though, it's beyond the scope of the script.