Added unproject

Broken and buggy font stuff
Fixed some typos
Fixed draw rect not using dim properly

code/game/core.h

@@ -25,6 +25,12 @@ function void G_PipelinesLoad(G_State *game);
 
 function void G_CalculateCamera(G_Camera *camera, F32 aspect);
 
+// Assumes 'calculate' has been called
+function V3f G_CameraUnprojectAt(G_Camera *camera, V2f clip, F32 z);
+function V3f G_CameraUnproject(G_Camera *camera, V2f clip);
+
+function R3f G_CameraBounds(G_Camera *camera);
+
 #include "aabb.h"
 #include "player.h"
 #include "nav.h"