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Fix crash by assert in last RoE level (and maybe elsewhere)

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The assertion in idBounds::operator-(const idBounds&) was triggered
from idWeapon::Event_LaunchProjectiles() (ownerBounds - projBounds)
It only happened when using the BFG.
So I added a check to make sure calling operator- is legal.

I guess this also caused #122
This commit is contained in:
Daniel Gibson 2015-12-13 03:06:52 +01:00
parent a5a46de8f9
commit 4ad1349113
2 changed files with 15 additions and 2 deletions
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9
d3xp/Weapon.cpp
View file

@ -3446,7 +3446,14 @@ void idWeapon::Event_LaunchProjectiles( int num_projectiles, float spread, float
// make sure the projectile starts inside the bounding box of the owner
if ( i == 0 ) {
muzzle_pos = muzzleOrigin + playerViewAxis[ 0 ] * 2.0f;
if ( ( ownerBounds - projBounds).RayIntersection( muzzle_pos, playerViewAxis[0], distance ) ) {
// DG: sometimes the assertion in idBounds::operator-(const idBounds&) triggers
// (would get bounding box with negative volume)
// => check that before doing ownerBounds - projBounds (equivalent to the check in the assertion)
idVec3 obDiff = ownerBounds[1] - ownerBounds[0];
idVec3 pbDiff = projBounds[1] - projBounds[0];
bool boundsSubLegal = obDiff.x > pbDiff.x && obDiff.y > pbDiff.y && obDiff.z > pbDiff.z;
if ( boundsSubLegal && ( ownerBounds - projBounds ).RayIntersection( muzzle_pos, playerViewAxis[0], distance ) ) {
start = muzzle_pos + distance * playerViewAxis[0];
} else {
start = ownerBounds.GetCenter();

8
game/Weapon.cpp
View file

@ -2941,7 +2941,13 @@ void idWeapon::Event_LaunchProjectiles( int num_projectiles, float spread, float
// make sure the projectile starts inside the bounding box of the owner
if ( i == 0 ) {
muzzle_pos = muzzleOrigin + playerViewAxis[ 0 ] * 2.0f;
if ( ( ownerBounds - projBounds).RayIntersection( muzzle_pos, playerViewAxis[0], distance ) ) {
// DG: sometimes the assertion in idBounds::operator-(const idBounds&) triggers
// (would get bounding box with negative volume)
// => check that before doing ownerBounds - projBounds (equivalent to the check in the assertion)
idVec3 obDiff = ownerBounds[1] - ownerBounds[0];
idVec3 pbDiff = projBounds[1] - projBounds[0];
bool boundsSubLegal = obDiff.x > pbDiff.x && obDiff.y > pbDiff.y && obDiff.z > pbDiff.z;
if ( boundsSubLegal && ( ownerBounds - projBounds ).RayIntersection( muzzle_pos, playerViewAxis[0], distance ) ) {
start = muzzle_pos + distance * playerViewAxis[0];
} else {
start = ownerBounds.GetCenter();