bool CWeaponFireDesc::FireOnFragment (const CDamageSource &Source, CSpaceObject *pShot, const CVector &vHitPos, CSpaceObject *pNearestObj, CSpaceObject *pTarget)
// FireOnFragment
//
// Event fires when a shot fragments. If we return TRUE then we skip the default
// fragmentation event.
{
SEventHandlerDesc Event;
if (FindEventHandler(evtOnFragment, &Event))
{
// Setup arguments
CCodeChainCtx CCCtx;
CCCtx.SaveAndDefineSourceVar(pShot);
CCCtx.DefineSpaceObject(CONSTLIT("aNearestObj"), pNearestObj);
CCCtx.DefineSpaceObject(CONSTLIT("aTargetObj"), pTarget);
CCCtx.DefineVector(CONSTLIT("aHitPos"), vHitPos);
CCCtx.DefineInteger(CONSTLIT("aHitDir"), (pShot ? pShot->GetRotation() : 0));
CCCtx.DefineItemType(CONSTLIT("aWeaponType"), GetWeaponType());
CCCtx.DefineString(CONSTLIT("aWeaponFragment"), m_sUNID);
CSpaceObject *pAttacker = Source.GetObj();
CCCtx.DefineSpaceObject(CONSTLIT("aCause"), pShot);
CCCtx.DefineSpaceObject(CONSTLIT("aAttacker"), pAttacker);
CCCtx.DefineSpaceObject(CONSTLIT("aOrderGiver"), (pAttacker ? pAttacker->GetOrderGiver(Source.GetCause()) : NULL));
ICCItem *pResult = CCCtx.Run(Event);
if (pResult->IsError())
pShot->ReportEventError(ON_FRAGMENT_EVENT, pResult);
// If we return Nil, then we continue processing
bool bResult;
if (pResult->IsNil())
bResult = false;
// Otherwise, we skip fragmentation
else
bResult = true;
CCCtx.Discard(pResult);
return bResult;
}
else
return false;
}
ALERROR CParticleDamage::Create (CSystem *pSystem,
CWeaponFireDesc *pDesc,
CItemEnhancementStack *pEnhancements,
DestructionTypes iCause,
const CDamageSource &Source,
const CVector &vPos,
const CVector &vVel,
int iDirection,
CSpaceObject *pTarget,
CParticleDamage **retpObj)
// Create
//
// Create the object
{
ALERROR error;
// Make sure we have a valid CWeaponFireDesc (otherwise we won't be
// able to save the object).
ASSERT(!pDesc->m_sUNID.IsBlank());
// Create the area
CParticleDamage *pParticles = new CParticleDamage;
if (pParticles == NULL)
return ERR_MEMORY;
pParticles->Place(vPos, vVel);
// Get notifications when other objects are destroyed
pParticles->SetObjectDestructionHook();
// Set non-linear move, meaning that we are responsible for
// setting the position and velocity in OnMove
pParticles->SetNonLinearMove();
pParticles->m_pDesc = pDesc;
pParticles->m_pTarget = pTarget;
pParticles->m_pEnhancements = (pEnhancements ? pEnhancements->AddRef() : NULL);
pParticles->m_iCause = iCause;
pParticles->m_iEmitDirection = iDirection;
pParticles->m_vEmitSourcePos = vPos;
pParticles->m_vEmitSourceVel = (Source.GetObj() ? Source.GetObj()->GetVel() : CVector());
pParticles->m_iEmitTime = Max(1, pDesc->GetParticleEmitTime());
pParticles->m_iLifeLeft = pDesc->GetMaxLifetime() + pParticles->m_iEmitTime;
pParticles->m_Source = Source;
pParticles->m_iTick = 0;
pParticles->m_iDamage = pDesc->m_Damage.RollDamage();
// Friendly fire
if (!pDesc->CanHitFriends())
pParticles->SetNoFriendlyFire();
// Painter
CEffectCreator *pEffect;
if (pEffect = pDesc->GetEffect())
{
CCreatePainterCtx Ctx;
Ctx.SetWeaponFireDesc(pDesc);
pParticles->m_pPainter = pEffect->CreatePainter(Ctx);
}
// Remember the sovereign of the source (in case the source is destroyed)
if (Source.GetObj())
pParticles->m_pSovereign = Source.GetObj()->GetSovereign();
else
pParticles->m_pSovereign = NULL;
// Compute the maximum number of particles that we might have
int iMaxCount = pParticles->m_iEmitTime * pDesc->GetMaxParticleCount();
pParticles->m_Particles.Init(iMaxCount, vPos);
// Create the initial particles
int iInitCount = pDesc->GetParticleCount();
pParticles->InitParticles(iInitCount, CVector(), vVel, iDirection);
// Figure out the number of particles that will cause full damage
if (pParticles->m_iEmitTime > 1)
pParticles->m_iParticleCount = pParticles->m_iEmitTime * pDesc->GetAveParticleCount();
else
pParticles->m_iParticleCount = iInitCount;
pParticles->m_iParticleCount = Max(1, pParticles->m_iParticleCount);
// Add to system
if (error = pParticles->AddToSystem(pSystem))
{
delete pParticles;
return error;
}
// Done
if (retpObj)
*retpObj = pParticles;
return NOERROR;
}
