zdoom/qzdoom
0
0
Fork 0
mirror of https://github.com/ZDoom/qzdoom.git synced 2024-11-11 07:11:54 +00:00
Code Issues Projects Releases Packages Wiki Activity

Clamp xy angle range in P_SetSlope()

Browse source 
- This function just assumed that every xy angle passed to it was within
  the range [0,360). This is obviously bad, since anything outside that
  range can result in accessing data outside the range of the finecosine
  and finesine tables.
This commit is contained in:
Randy Heit 2014-02-24 18:16:18 -06:00
parent a60918f601
commit 5a5fb9b3d1
1 changed files with 8 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/p_slopes.cpp
View file

@ -178,6 +178,12 @@ void P_SetSlope (secplane_t *plane, bool setCeil, int xyangi, int zangi,
}
zang >>= ANGLETOFINESHIFT;
// Sanitize xyangi to [0,360) range
xyangi = xyangi % 360;
if (xyangi < 0)
{
xyangi = 360 + xyangi;
}
xyang = (angle_t)Scale (xyangi, ANGLE_90, 90 << ANGLETOFINESHIFT);
FVector3 norm;
@ -446,11 +452,11 @@ void P_SpawnSlopeMakers (FMapThing *firstmt, FMapThing *lastmt, const int *oldve
P_VavoomSlope(sec, mt->thingid, x, y, mt->z, mt->type & 1);
}
else if (mt->type <= THING_SlopeCeilingPointLine)
{
{ // THING_SlopeFloorPointLine and THING_SlopCeilingPointLine
P_SlopeLineToPoint (mt->args[0], x, y, z, mt->type & 1);
}
else
{
{ // THING_SetFloorSlope and THING_SetCeilingSlope
P_SetSlope (refplane, mt->type & 1, mt->angle, mt->args[0], x, y, z);
}
mt->type = 0;