In this video I'll be showing you how to generate terraria style terrain in game maker studio.
Perlin Noise Article (original broken)
http://www.arendpeter.com/Perlin_Noise.html
Tutorial on print statements
https://www.youtube.com/watch?v=pd-r0e7e3X8
Perlin Noise Series
https://www.youtube.com/playlist?list=PLywxFF6tce1-lKgtB0-i-t0c3ZtPCNFCe
Source Code
http://www.mediafire.com/download/ev5vd0b9639mh04/GMTerraria.zip