void CGameHelper::DoExplosionDamage(CFeature* feature,
const float3& expPos, float expRad, CUnit* owner, const DamageArray& damages)
{
CollisionVolume* cv = feature->collisionVolume;
if (cv) {
float3 dif = (feature->midPos + cv->GetOffsets()) - expPos;
float expDist = std::max(dif.Length(), 0.1f);
float expMod = (expRad - expDist) / expRad;
// always do some damage with explosive stuff
// (DDM wreckage etc. is too big to normally
// be damaged otherwise, even by BB shells)
// NOTE: this will also be only approximate
// for non-spherical volumes
if ((expRad > 8.0f) && (expDist < (cv->GetBoundingRadius() * 1.1f)) && (expMod < 0.1f)) {
expMod = 0.1f;
}
if (expMod > 0.0f) {
feature->DoDamage(damages * expMod, owner,
dif * (damages.impulseFactor * expMod / expDist *
(damages[0] + damages.impulseBoost)));
}
}
}
float CGameHelper::GuiTraceRayFeature(const float3& start, const float3& dir, float length, CFeature*& feature)
{
float nearHit = length;
GML_RECMUTEX_LOCK(quad); // GuiTraceRayFeature
std::vector<int> quads = qf->GetQuadsOnRay(start, dir, length);
std::vector<int>::iterator qi;
for (qi = quads.begin(); qi != quads.end(); ++qi) {
const CQuadField::Quad& quad = qf->GetQuad(*qi);
std::list<CFeature*>::const_iterator ui;
// NOTE: switch this to custom volumes fully?
// (not used for any LOF checks, maybe wasteful)
for (ui = quad.features.begin(); ui != quad.features.end(); ++ui) {
CFeature* f = *ui;
if (!gu->spectatingFullView && !f->IsInLosForAllyTeam(gu->myAllyTeam)) {
continue;
}
if (f->noSelect) {
continue;
}
CollisionVolume* cv = f->collisionVolume;
const float3& midPosOffset = cv? cv->GetOffsets(): ZeroVector;
const float3 dif = (f->midPos + midPosOffset) - start;
float closeLength = dif.dot(dir);
if (closeLength < 0)
continue;
if (closeLength > nearHit)
continue;
float3 closeVect = dif - dir * closeLength;
if (closeVect.SqLength() < f->sqRadius) {
nearHit = closeLength;
feature = f;
}
}
}
return nearHit;
}
