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Lunatic rotatesprite: disallow FULL16 coordinates since Lua numbers are FP.

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git-svn-id: https://svn.eduke32.com/eduke32@3770 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2013-05-15 18:32:50 +00:00
parent 6cc4cfbf8a
commit 3092fb20e7
2 changed files with 24 additions and 10 deletions
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26
polymer/eduke32/source/lunatic/control.lua
View file

@ -279,29 +279,43 @@ function isenemytile(tilenum)
return (bit.band(ffiC.g_tile[tilenum].flags, BADGUY_MASK)~=0)
end
function rotatesprite(x, y, zoom, ang, tilenum, shade, pal, orientation,
-- The 'rotatesprite' wrapper used by the CON commands.
function _rotspr(x, y, zoom, ang, tilenum, shade, pal, orientation,
alpha, cx1, cy1, cx2, cy2)
check_tile_idx(tilenum)
orientation = bit.band(orientation, 4095) -- ROTATESPRITE_MAX-1
if (bit.band(orientation, 2048) ~= 2048) then -- ROTATESPRITE_FULL16
if (bit.band(orientation, 2048) == 0) then -- ROTATESPRITE_FULL16
x = 65536*x
y = 65536*y
end
-- XXX: This is the same as the check in gameexec.c, but ideally we'd want
-- rotatesprite to accept all coordinates and simply draw nothing if they
-- denote an area beyond the screen.
-- rotatesprite to accept all coordinates and simply draw nothing if the
-- tile's bounding rectange is beyond the screen.
-- XXX: Currently, classic rotatesprite() is not correct with some large
-- zoom values.
if (not (x >= -320*65536 and x < 640*65536) or not (y >= -200*65536 and y < 400*65536)) then
error(format("invalid coordinates (%.03f, %.03f)", x, y), 2)
end
-- TODO: check that it works correctly with all coordinates, also if one
-- border is outside the screen etc...
ffiC.rotatesprite_(x, y, zoom, ang, tilenum, shade, pal, bit.bor(2,orientation),
alpha, cx1, cy1, cx2, cy2)
end
-- The external legacy tile drawing function for Lunatic.
function rotatesprite(x, y, zoom, ang, tilenum, shade, pal, orientation,
alpha, cx1, cy1, cx2, cy2)
-- Disallow <<16 coordinates from Lunatic. They only unnecessarily increase
-- complexity; you already have more precision in the FP number fraction.
if (bit.band(orientation, 2048) ~= 0) then
error('left-shift-by-16 coordinates forbidden', 2)
end
return _rotspr(x, y, zoom, ang, tilenum, shade, pal, orientation,
alpha, cx1, cy1, cx2, cy2)
end
function _myos(x, y, zoom, tilenum, shade, orientation, pal)
if (pal==nil) then
local sect = player[ffiC.screenpeek].cursectnum

6
polymer/eduke32/source/lunatic/lunacon.lua
View file

@ -1745,15 +1745,15 @@ local handle =
end,
rotatesprite = function(...)
return format("_con.rotatesprite(%s,%s,%s,%s,%s,%s,%s,%s,0,%s,%s,%s,%s)", ...)
return format("_con._rotspr(%s,%s,%s,%s,%s,%s,%s,%s,0,%s,%s,%s,%s)", ...)
end,
rotatesprite16 = function(...) -- (orientation|ROTATESPRITE_FULL16)
return format("_con.rotatesprite(%s,%s,%s,%s,%s,%s,%s,_bor(%s,2048),0,%s,%s,%s,%s)", ...)
return format("_con._rotspr(%s,%s,%s,%s,%s,%s,%s,_bor(%s,2048),0,%s,%s,%s,%s)", ...)
end,
rotatespritea = function(...)
return format("_con.rotatesprite(%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)", ...)
return format("_con._rotspr(%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)", ...)
end,
-- readgamevar or savegamevar