This asset is now free and no more supported.
Build with and for GMS 1.4. This is a grid based shadow casting. Ideal for roguelikes and grid based games. It uses a ray casting method. It manages unseen cells(black) and already seen cells(semi-transparent). You must be familiar with the ds_grids functions and surfaces. Easy to implement in any other projects. As always, everything is well commented.
End User Licence Agreement (EULA).
Cleaner code and added parentheses to statements and semicolon to all lines.