C4 is a gaming/graphics engine written by Eric Lengyel
at Terathon Inc. While it has
some shortcomings because it's being created by a single guy, it's also
pretty nice in many areas, and packs a solid graphics punch. At times,
I fool around with this engine, and this page collects some information
I gather about it.
Read my article on pathfinding in C4
which actually includes code for a complete art path for authoring
navigation meshes (networks) and doing A-star pathfinding throughout
levels. You might find it useful if you want NPCs that walk around the
level, for example.
Download the code if you want
to actually use it, or just to read it.
The graphical scripting language of C4 doesn't support conditional
execution, by default. This article
describes how to implement a script method that will execute its submethods
only if a given console variable has a certain value. You get to set the name
of the variable, the reference value, and the comparison function (equal,
less than, etc). Note that console variables are NOT game state, so you
will have to do something else to make decisions based on game state.
Download the code if you want to
actually use it, or just to read it.