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r3321 | helixhorned | 2012-12-25 08:13:50 -0800 (Tue, 25 Dec 2012) | 13 lines

Cleanup of console/on-screen-display (OSD) functionality.

- Rewrite the "clear background" routine in a no-brainer way instead of
  juggling around with rotatesprite(). Make it common to game+editor.
  Expose glRectd to glbuild.
- Don't stop OSD text line drawing when encountering a non-printable char.
  Instead, treat it as space.
- In OSD_SetTextMode(), don't use swaplong (which really swaps 32-bit ints)
  to swap pointers. Write an analogous "swapptr" instead.
- When changing from/to OSD, don't inject a pause key. This *might* have been
  the cause of the reported pausing problems.
- clean up the code...
(Yes, this commit throws together too much stuff. I suck sometimes. :P)
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r3320 | helixhorned | 2012-12-25 08:13:45 -0800 (Tue, 25 Dec 2012) | 1 line

Lunatic: event chaining.
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r3319 | helixhorned | 2012-12-25 08:13:41 -0800 (Tue, 25 Dec 2012) | 1 line

Lunatic: print -> OSD_Printf, error reporting.
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r3318 | helixhorned | 2012-12-25 08:13:36 -0800 (Tue, 25 Dec 2012) | 1 line

Clip printext256() at xdim, don't crash OSD_Printf() with empty string.
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