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3 commits

Author SHA1 Message Date
helixhorned
63fee16ca5 CON: in rotatespritea and screentext, if alpha < 0, make -alpha denote blend.
For convenience, orientation gets bit 1 (translucency) set automatically.
Again, test/screentext.con is updated to show off this functionality (the
code there assumes that additive blending tables are loaded at blend
numbers 101 -- 132).

BUILD_LUNATIC.

git-svn-id: https://svn.eduke32.com/eduke32@4428 1a8010ca-5511-0410-912e-c29ae57300e0
2014-04-09 18:51:35 +00:00
helixhorned
e1845c8d05 In ext. PALETTE.DAT, store log2 of last alpha table index. Handle alpha in classic.
The extended PALETTE.DAT format can now carry a trailing byte, called
'lognumalphatables'. If it is present, the engine assumes that alpha blending
tables are loaded at blend indices 1 to 1<<lognumalphatables and handles
rotatesprite's alpha and spriteext[].alpha accordingly.
The ability to save this new byte is added to engine.lua:savePaletteDat()
and the corresponding convenience functions in shadexfog.lua.

Examples test/screentext.con and test/sprite_access.con are updated for
demonstration purposes.

git-svn-id: https://svn.eduke32.com/eduke32@4426 1a8010ca-5511-0410-912e-c29ae57300e0
2014-04-09 18:51:31 +00:00
hendricks266
ced47cf9fc Add qstrdim and screentext, powerful new functions for HUD text.
git-svn-id: https://svn.eduke32.com/eduke32@3833 1a8010ca-5511-0410-912e-c29ae57300e0
2013-06-01 06:55:00 +00:00