void CProjectileHandler::CheckUnitCollisions(
CProjectile* p,
std::vector<CUnit*>& tempUnits,
CUnit** endUnit,
const float3& ppos0,
const float3& ppos1)
{
CollisionQuery q;
for (CUnit** ui = &tempUnits[0]; ui != endUnit; ++ui) {
CUnit* unit = *ui;
const CUnit* attacker = p->owner();
const bool raytraced = (unit->collisionVolume->GetTestType() == CollisionVolume::COLVOL_HITTEST_CONT);
// if this unit fired this projectile, always ignore
if (attacker == unit) {
continue;
}
if (p->GetCollisionFlags() & Collision::NOFRIENDLIES) {
if (attacker != NULL && (unit->allyteam == attacker->allyteam)) { continue; }
}
if (p->GetCollisionFlags() & Collision::NOENEMIES) {
if (attacker != NULL && (unit->allyteam != attacker->allyteam)) { continue; }
}
if (p->GetCollisionFlags() & Collision::NONEUTRALS) {
if (unit->IsNeutral()) { continue; }
}
if (CCollisionHandler::DetectHit(unit, ppos0, ppos1, &q)) {
if (q.lmp != NULL) {
unit->SetLastAttackedPiece(q.lmp, gs->frameNum);
}
// The current projectile <p> won't reach the raytraced surface impact
// position until ::Update() is called (same frame). This is a problem
// when dealing with fast low-AOE projectiles since they would do almost
// no damage if detonated outside the collision volume. Therefore, smuggle
// a bit with its position now (rather than rolling it back in ::Update()
// and waiting for the next-frame CheckUnitCol(), which is problematic
// for noExplode projectiles).
// const float3& pimpp = (q.b0)? q.p0: q.p1;
const float3 pimpp =
(q.b0 && q.b1)? ( q.p0 + q.p1) * 0.5f:
(q.b0 )? ( q.p0 + ppos1) * 0.5f:
(ppos0 + q.p1) * 0.5f;
p->pos = (raytraced)? pimpp: ppos0;
p->Collision(unit);
p->pos = (raytraced)? ppos0: p->pos;
break;
}
}
}
bool CAICheats::IsUnitNeutral(int unitid) {
if (!CHECK_UNITID(unitid))
return false;
CUnit* unit = uh->units[unitid];
if (unit) {
return (unit->IsNeutral());
}
return false;
}
bool CAICallback::IsUnitNeutral(int unitId) {
verify();
if (CHECK_UNITID(unitId)) {
CUnit* unit = uh->units[unitId];
if (unit && (unit->losStatus[gs->AllyTeam(team)] & LOS_INLOS)) {
if (unit->IsNeutral())
return true;
}
}
return false;
}
/** same as TestTrajectoryAllyCone, but looks for neutral units */
bool CGameHelper::TestTrajectoryNeutralCone(const float3& from, const float3& flatdir, float length, float linear, float quadratic, float spread, float baseSize, CUnit* owner)
{
int quads[1000];
int* endQuad = quads;
qf->GetQuadsOnRay(from, flatdir, length, endQuad);
for (int* qi = quads; qi != endQuad; ++qi) {
const CQuadField::Quad& quad = qf->GetQuad(*qi);
for (std::list<CUnit*>::const_iterator ui = quad.units.begin(); ui != quad.units.end(); ++ui) {
CUnit* u = *ui;
if (u == owner)
continue;
if (u->IsNeutral()) {
if (TestTrajectoryConeHelper(from, flatdir, length, linear, quadratic, spread, baseSize, u))
return true;
}
}
}
return false;
}
/** same as TestAllyCone, but looks for neutral units */
bool TestNeutralCone(const float3& from, const float3& weaponDir, float length, float spread, CUnit* owner)
{
int quads[1000];
int* endQuad = quads;
qf->GetQuadsOnRay(from, weaponDir, length, endQuad);
for (int* qi = quads; qi != endQuad; ++qi) {
const CQuadField::Quad& quad = qf->GetQuad(*qi);
for (std::list<CUnit*>::const_iterator ui = quad.units.begin(); ui != quad.units.end(); ++ui) {
CUnit* u = *ui;
if (u == owner)
continue;
if (u->IsNeutral()) {
if (TestConeHelper(from, weaponDir, length, spread, u))
return true;
}
}
}
return false;
}
// called by {CRifle, CBeamLaser, CLightningCannon}::Fire()
float CGameHelper::TraceRay(const float3& start, const float3& dir, float length, float /*power*/, CUnit* owner, CUnit *&hit, int collisionFlags)
{
float groundLength = ground->LineGroundCol(start, start + dir * length);
const bool ignoreAllies = !!(collisionFlags & COLLISION_NOFRIENDLY);
const bool ignoreFeatures = !!(collisionFlags & COLLISION_NOFEATURE);
const bool ignoreNeutrals = !!(collisionFlags & COLLISION_NONEUTRAL);
if (length > groundLength && groundLength > 0) {
length = groundLength;
}
CollisionQuery cq;
int quads[1000];
int* endQuad = quads;
qf->GetQuadsOnRay(start, dir, length, endQuad);
if (!ignoreFeatures) {
for (int* qi = quads; qi != endQuad; ++qi) {
const CQuadField::Quad& quad = qf->GetQuad(*qi);
for (std::list<CFeature*>::const_iterator ui = quad.features.begin(); ui != quad.features.end(); ++ui) {
CFeature* f = *ui;
if (!f->blocking || !f->collisionVolume) {
// NOTE: why check the blocking property?
continue;
}
if (CCollisionHandler::Intersect(f, start, start + dir * length, &cq)) {
const float3& intPos = (cq.b0)? cq.p0: cq.p1;
const float tmpLen = (intPos - start).Length();
// we want the closest feature (intersection point) on the ray
if (tmpLen < length) {
length = tmpLen;
}
}
}
}
}
hit = 0;
for (int* qi = quads; qi != endQuad; ++qi) {
const CQuadField::Quad& quad = qf->GetQuad(*qi);
for (std::list<CUnit*>::const_iterator ui = quad.units.begin(); ui != quad.units.end(); ++ui) {
CUnit* u = *ui;
if (u == owner)
continue;
if (ignoreAllies && u->allyteam == owner->allyteam)
continue;
if (ignoreNeutrals && u->IsNeutral()) {
continue;
}
if (CCollisionHandler::Intersect(u, start, start + dir * length, &cq)) {
const float3& intPos = (cq.b0)? cq.p0: cq.p1;
const float tmpLen = (intPos - start).Length();
// we want the closest unit (intersection point) on the ray
if (tmpLen < length) {
length = tmpLen;
hit = u;
}
}
}
}
return length;
}
void CProjectileHandler::CheckUnitCol()
{
Projectile_List::iterator psi;
static std::vector<CUnit*> tempUnits(uh->MaxUnits(), NULL);
static std::vector<CFeature*> tempFeatures(uh->MaxUnits(), NULL);
CollisionQuery q;
for (psi = ps.begin(); psi != ps.end(); ++psi) {
CProjectile* p = (*psi);
if (p->checkCol && !p->deleteMe) {
const float3 ppos0 = p->pos;
const float3 ppos1 = p->pos + p->speed;
float speedf = p->speed.Length();
CUnit** endUnit = &tempUnits[0];
CFeature** endFeature = &tempFeatures[0];
qf->GetUnitsAndFeaturesExact(p->pos, p->radius + speedf, endUnit, endFeature);
for (CUnit** ui = &tempUnits[0]; ui != endUnit; ++ui) {
CUnit* unit = *ui;
const bool friendlyShot = (p->owner() && (unit->allyteam == p->owner()->allyteam));
const bool raytraced =
(unit->collisionVolume &&
unit->collisionVolume->GetTestType() == COLVOL_TEST_CONT);
// if this unit fired this projectile or (this unit is in the
// same allyteam as the unit that shot this projectile and we
// are ignoring friendly collisions)
if (p->owner() == unit || !unit->collisionVolume ||
((p->collisionFlags & COLLISION_NOFRIENDLY) && friendlyShot)) {
continue;
}
if (p->collisionFlags & COLLISION_NONEUTRAL) {
if (unit->IsNeutral()) {
continue;
}
}
if (CCollisionHandler::DetectHit(unit, ppos0, ppos1, &q)) {
// this projectile won't reach the raytraced surface impact pos
// until Update() is called (right after we return, same frame)
// which is a problem when dealing with fast low-AOE projectiles
// since they would do almost no damage if detonated outside the
// volume, so smuggle a bit ("rolling back" its pos in Update()
// and waiting for the next-frame CheckUnitCol() is problematic
// for noExplode projectiles)
// const float3& pimpp = (q.b0)? q.p0: q.p1;
const float3 pimpp =
(q.b0 && q.b1)? (q.p0 + q.p1) * 0.5f:
(q.b0 )? (q.p0 + ppos1) * 0.5f:
(ppos0 + q.p1) * 0.5f;
p->pos = (raytraced)? pimpp: ppos0;
p->Collision(unit);
p->pos = (raytraced)? ppos0: p->pos;
break;
}
}
if (!(p->collisionFlags & COLLISION_NOFEATURE)) {
for (CFeature** fi = &tempFeatures[0]; fi != endFeature; ++fi) {
CFeature* feature = *fi;
const bool raytraced =
(feature->collisionVolume &&
feature->collisionVolume->GetTestType() == COLVOL_TEST_CONT);
// geothermals do not have a collision volume, skip them
if (!feature->blocking || feature->def->geoThermal || !feature->collisionVolume) {
continue;
}
if (CCollisionHandler::DetectHit(feature, ppos0, ppos1, &q)) {
const float3 pimpp =
(q.b0 && q.b1)? (q.p0 + q.p1) * 0.5f:
(q.b0 )? (q.p0 + ppos1) * 0.5f:
(ppos0 + q.p1) * 0.5f;
p->pos = (raytraced)? pimpp: ppos0;
p->Collision(feature);
p->pos = (raytraced)? ppos0: p->pos;
break;
}
}
}
}
}
}
// called by {CRifle, CBeamLaser, CLightningCannon}::Fire(), CWeapon::HaveFreeLineOfFire(), and Skirmish AIs
float TraceRay(
const float3& start,
const float3& dir,
float length,
int collisionFlags,
const CUnit* owner,
CUnit*& hitUnit,
CFeature*& hitFeature
) {
const bool ignoreEnemies = ((collisionFlags & Collision::NOENEMIES ) != 0);
const bool ignoreAllies = ((collisionFlags & Collision::NOFRIENDLIES) != 0);
const bool ignoreFeatures = ((collisionFlags & Collision::NOFEATURES ) != 0);
const bool ignoreNeutrals = ((collisionFlags & Collision::NONEUTRALS ) != 0);
const bool ignoreGround = ((collisionFlags & Collision::NOGROUND ) != 0);
const bool ignoreUnits = ignoreEnemies && ignoreAllies && ignoreNeutrals;
hitFeature = NULL;
hitUnit = NULL;
if (dir == ZeroVector) {
return -1.0f;
}
if (!ignoreFeatures || !ignoreUnits) {
GML_RECMUTEX_LOCK(quad); // TraceRay
CollisionQuery cq;
int* begQuad = NULL;
int* endQuad = NULL;
qf->GetQuadsOnRay(start, dir, length, begQuad, endQuad);
// feature intersection
if (!ignoreFeatures) {
for (int* quadPtr = begQuad; quadPtr != endQuad; ++quadPtr) {
const CQuadField::Quad& quad = qf->GetQuad(*quadPtr);
for (std::list<CFeature*>::const_iterator ui = quad.features.begin(); ui != quad.features.end(); ++ui) {
CFeature* f = *ui;
// NOTE:
// if f is non-blocking, ProjectileHandler will not test
// for collisions with projectiles so we can skip it here
if (!f->blocking)
continue;
if (CCollisionHandler::DetectHit(f, start, start + dir * length, &cq, true)) {
const float3& intPos = (cq.b0)? cq.p0: cq.p1;
const float len = (intPos - start).dot(dir); // same as (intPos - start).Length()
// we want the closest feature (intersection point) on the ray
if (len < length) {
length = len;
hitFeature = f;
}
}
}
}
}
// unit intersection
if (!ignoreUnits) {
for (int* quadPtr = begQuad; quadPtr != endQuad; ++quadPtr) {
const CQuadField::Quad& quad = qf->GetQuad(*quadPtr);
for (std::list<CUnit*>::const_iterator ui = quad.units.begin(); ui != quad.units.end(); ++ui) {
CUnit* u = *ui;
if (u == owner)
continue;
if (ignoreAllies && u->allyteam == owner->allyteam)
continue;
if (ignoreNeutrals && u->IsNeutral())
continue;
if (ignoreEnemies && u->allyteam != owner->allyteam)
continue;
if (CCollisionHandler::DetectHit(u, start, start + dir * length, &cq, true)) {
const float3& intPos = (cq.b0)? cq.p0: cq.p1;
const float len = (intPos - start).dot(dir); // same as (intPos - start).Length()
// we want the closest unit (intersection point) on the ray
if (len < length) {
length = len;
hitUnit = u;
}
}
}
}
if (hitUnit)
hitFeature = NULL;
}
}
if (!ignoreGround) {
// ground intersection
const float groundLength = ground->LineGroundCol(start, start + dir * length);
if (length > groundLength && groundLength > 0) {
length = groundLength;
hitUnit = NULL;
hitFeature = NULL;
}
}
return length;
}
// called by {CRifle, CBeamLaser, CLightningCannon}::Fire() and Skirmish AIs
float TraceRay(const float3& start, const float3& dir, float length, int collisionFlags, const CUnit* owner, CUnit*& hitUnit, CFeature*& hitFeature)
{
const bool ignoreEnemies = !!(collisionFlags & Collision::NOENEMIES);
const bool ignoreAllies = !!(collisionFlags & Collision::NOFRIENDLIES);
const bool ignoreFeatures = !!(collisionFlags & Collision::NOFEATURES);
const bool ignoreNeutrals = !!(collisionFlags & Collision::NONEUTRALS);
const bool ignoreGround = !!(collisionFlags & Collision::NOGROUND);
const bool ignoreUnits = ignoreEnemies && ignoreAllies && ignoreNeutrals;
hitFeature = NULL;
hitUnit = NULL;
if (dir == ZeroVector) {
return -1.0f;
}
CollisionQuery cq;
{
GML_RECMUTEX_LOCK(quad); // TraceRay
const vector<int> &quads = qf->GetQuadsOnRay(start, dir, length);
//! feature intersection
if (!ignoreFeatures) {
for (vector<int>::const_iterator qi = quads.begin(); qi != quads.end(); ++qi) {
const CQuadField::Quad& quad = qf->GetQuad(*qi);
for (std::list<CFeature*>::const_iterator ui = quad.features.begin(); ui != quad.features.end(); ++ui) {
CFeature* f = *ui;
if (!f->blocking || !f->collisionVolume) {
// NOTE: why check the blocking property?
continue;
}
if (CCollisionHandler::Intersect(f, start, start + dir * length, &cq)) {
const float3& intPos = (cq.b0)? cq.p0: cq.p1;
const float len = (intPos - start).dot(dir); //! same as (intPos - start).Length()
//! we want the closest feature (intersection point) on the ray
if (len < length) {
length = len;
hitFeature = f;
}
}
}
}
}
//! unit intersection
if (!ignoreUnits) {
for (vector<int>::const_iterator qi = quads.begin(); qi != quads.end(); ++qi) {
const CQuadField::Quad& quad = qf->GetQuad(*qi);
for (std::list<CUnit*>::const_iterator ui = quad.units.begin(); ui != quad.units.end(); ++ui) {
CUnit* u = *ui;
if (u == owner)
continue;
if (ignoreAllies && u->allyteam == owner->allyteam)
continue;
if (ignoreNeutrals && u->IsNeutral())
continue;
if (ignoreEnemies && u->allyteam != owner->allyteam)
continue;
if (CCollisionHandler::Intersect(u, start, start + dir * length, &cq)) {
const float3& intPos = (cq.b0)? cq.p0: cq.p1;
const float len = (intPos - start).dot(dir); //! same as (intPos - start).Length()
//! we want the closest unit (intersection point) on the ray
if (len < length) {
length = len;
hitUnit = u;
}
}
}
}
if (hitUnit)
hitFeature = NULL;
}
} //GML_RECMUTEX_LOCK(quad);
if (!ignoreGround) {
//! ground intersection
float groundLength = ground->LineGroundCol(start, start + dir * length);
if (length > groundLength && groundLength > 0) {
length = groundLength;
hitUnit = NULL;
hitFeature = NULL;
}
}
return length;
}
// called by {CRifle, CBeamLaser, CLightningCannon}::Fire(), CWeapon::HaveFreeLineOfFire(), and Skirmish AIs
float TraceRay(
const float3& start,
const float3& dir,
float length,
int avoidFlags,
const CUnit* owner,
CUnit*& hitUnit,
CFeature*& hitFeature,
CollisionQuery* hitColQuery
) {
const bool ignoreEnemies = ((avoidFlags & Collision::NOENEMIES ) != 0);
const bool ignoreAllies = ((avoidFlags & Collision::NOFRIENDLIES) != 0);
const bool ignoreFeatures = ((avoidFlags & Collision::NOFEATURES ) != 0);
const bool ignoreNeutrals = ((avoidFlags & Collision::NONEUTRALS ) != 0);
const bool ignoreGround = ((avoidFlags & Collision::NOGROUND ) != 0);
const bool ignoreUnits = ignoreEnemies && ignoreAllies && ignoreNeutrals;
hitFeature = NULL;
hitUnit = NULL;
if (dir == ZeroVector)
return -1.0f;
if (!ignoreFeatures || !ignoreUnits) {
GML_RECMUTEX_LOCK(quad); // TraceRay
CollisionQuery cq;
int* begQuad = NULL;
int* endQuad = NULL;
quadField->GetQuadsOnRay(start, dir, length, begQuad, endQuad);
// locally point somewhere non-NULL; we cannot pass hitColQuery
// to DetectHit directly because each call resets it internally
if (hitColQuery == NULL)
hitColQuery = &cq;
// feature intersection
if (!ignoreFeatures) {
for (int* quadPtr = begQuad; quadPtr != endQuad; ++quadPtr) {
const CQuadField::Quad& quad = quadField->GetQuad(*quadPtr);
for (std::list<CFeature*>::const_iterator ui = quad.features.begin(); ui != quad.features.end(); ++ui) {
CFeature* f = *ui;
// NOTE:
// if f is non-blocking, ProjectileHandler will not test
// for collisions with projectiles so we can skip it here
if (!f->HasCollidableStateBit(CSolidObject::CSTATE_BIT_QUADMAPRAYS))
continue;
if (CCollisionHandler::DetectHit(f, start, start + dir * length, &cq, true)) {
const float len = cq.GetHitPosDist(start, dir);
// we want the closest feature (intersection point) on the ray
if (len < length) {
length = len;
hitFeature = f;
*hitColQuery = cq;
}
}
}
}
}
// unit intersection
if (!ignoreUnits) {
for (int* quadPtr = begQuad; quadPtr != endQuad; ++quadPtr) {
const CQuadField::Quad& quad = quadField->GetQuad(*quadPtr);
for (std::list<CUnit*>::const_iterator ui = quad.units.begin(); ui != quad.units.end(); ++ui) {
CUnit* u = *ui;
if (u == owner)
continue;
if (!u->HasCollidableStateBit(CSolidObject::CSTATE_BIT_QUADMAPRAYS))
continue;
if (ignoreAllies && u->allyteam == owner->allyteam)
continue;
if (ignoreNeutrals && u->IsNeutral())
continue;
if (ignoreEnemies && u->allyteam != owner->allyteam)
continue;
if (CCollisionHandler::DetectHit(u, start, start + dir * length, &cq, true)) {
const float len = cq.GetHitPosDist(start, dir);
// we want the closest unit (intersection point) on the ray
if (len < length) {
length = len;
hitUnit = u;
*hitColQuery = cq;
}
}
}
}
if (hitUnit)
hitFeature = NULL;
}
}
if (!ignoreGround) {
// ground intersection
const float groundLength = ground->LineGroundCol(start, start + dir * length);
if (length > groundLength && groundLength > 0.0f) {
length = groundLength;
hitUnit = NULL;
hitFeature = NULL;
}
}
return length;
}
