When making a 2D Pokémon game, I just faked elevation by putting mountain tiles underneath the land. Now my tiles are 3D models, so I'm using layer properties to define their elevation. What I don't know though is how to generate a 'mountain' around them.
The tilemap is kinda' like this:
Layer 1: Layer 2: Layer 3: .... \\\\ \\\\ .... \..\ \\.\ .... \..\ \\\\ .... \\\\ \\\\
Layer 2 has y-offset set to 1, and Layer 3 has y-offset set to 2. All they do right now is float in the air. What I'm trying to do is render a mountain around them.