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- added NULL pointer check to portal rotation calculation function.

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This commit is contained in:
Christoph Oelckers 2016-03-12 22:37:43 +01:00
parent 0a92138edf
commit 8c027aef8b
1 changed files with 9 additions and 6 deletions
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15
src/portal.cpp
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@ -245,12 +245,15 @@ static line_t *FindDestination(line_t *src, int tag)
static void SetRotation(FLinePortal *port)
{
line_t *dst = port->mDestination;
line_t *line = port->mOrigin;
double angle = atan2(dst->dy, dst->dx) - atan2(line->dy, line->dx) + M_PI;
port->mSinRot = FLOAT2FIXED(sin(angle));
port->mCosRot = FLOAT2FIXED(cos(angle));
port->mAngleDiff = RAD2ANGLE(angle);
if (port != NULL && port->mDestination != NULL)
{
line_t *dst = port->mDestination;
line_t *line = port->mOrigin;
double angle = atan2(dst->dy, dst->dx) - atan2(line->dy, line->dx) + M_PI;
port->mSinRot = FLOAT2FIXED(sin(angle));
port->mCosRot = FLOAT2FIXED(cos(angle));
port->mAngleDiff = RAD2ANGLE(angle);
}
}
//============================================================================