Is a valid TTF font a monospace font?

Attempt to validate a TTF font file by loading its header using stb_truetype

Not sure why they are loaded here as opposed to a file

Wrapper method to load an image

Load an image file from disk into a texture (using stb)

Remember Y is reversed

Reset Starting Spells on Class Change

Now work out spellpoints!

Copied and rewritten from the original code from MINMAG/MINPRI/NWPRIEST/NWMAGE

Set starting spells

Set the starting spellpoints

Mappings for each type of special dungeon event in the Proving Grounds

Note Texture Coordinates (e.g. the source) is set by _set_texture_coordinates above, not here

Preset all the (transparent) windows we will need (this should be called before anything else is drawn to the screen during each render)

If we get here we can afford to heal

For each spell level, try to learn spells - called before set_spellpoints

Add hit points on level gain (but note the strict mode limitation mentioned below)

Since Grid Cartographer only defines s/e walls in our format, we do two updates, first with the tile in question, and then from the adjacent tile on a

Change Class