static Vector3 GetPlayerPosition()
{
CCopyEntity *pPlayer = GetPlayerEntity();
if( pPlayer )
return pPlayer->GetWorldPosition();
else
return Vector3(0,0,0);
}
void CBE_Enemy::SearchPlayer(CCopyEntity* pCopyEnt, short& rsMode,
Vector3& rvDesiredDirection, float* pfSqDistToPlayer)
{
// ========= enable the following 2 lines to use enemy observation mode ==========
// rsMode = CEnemyState::STATE_SEARCH;
// return;
Vector3 vStart, vMyselfToPlayer;
CCopyEntity* pPlayer = SinglePlayerInfo().GetCurrentPlayerBaseEntity()->GetPlayerCopyEntity();
vStart = pCopyEnt->GetWorldPosition() + pCopyEnt->GetDirection() * 1.42f;
vMyselfToPlayer = pPlayer->GetWorldPosition() - vStart;
// chehck the distance to the player
float fSqDist = Vec3LengthSq( vMyselfToPlayer );
if( pfSqDistToPlayer )
*pfSqDistToPlayer = fSqDist;
if( 40000 < fSqDist )
{ // too far from the player
rsMode = CEnemyState::STATE_SEARCH;
return;
}
if( !CheckRayToPlayer(pCopyEnt) )
{
rsMode = CEnemyState::STATE_SEARCH; // there is an obstacle between the player
return;
}
// set 'rvDesiredDirection' - unit vector pointing at the target(player)
Vec3Normalize( vMyselfToPlayer, vMyselfToPlayer );
rvDesiredDirection = vMyselfToPlayer;
float fDotProduct = Vec3Dot( pCopyEnt->GetDirection(), vMyselfToPlayer );
// 'fDotProduct' ranges from -1 through 1
if( 0 < fDotProduct )
{ //the player is visible from this entity
rsMode = CEnemyState::STATE_ATTACK; // move to attack mode
}
else
{
if( fSqDist < 400.0f )
rsMode = CEnemyState::STATE_ATTACK; // close enough to hear the player
else
rsMode = CEnemyState::STATE_SEARCH;
}
}
void CES_Search::Act( CCopyEntity& rEntity, CBE_Enemy& rBaseEntity, float dt )
{
// first, get the extra data of 'pCopyEnt'
SBE_EnemyExtraData* pExtraData = rBaseEntity.GetExtraData( rEntity.iExtraDataIndex );
short& rsCurrentState = rEntity.s1;
float& rfSensoringInterval = rEntity.f1;
Vector3& rvDesiredDirection = rEntity.v1;
float fSqDistToPlayer;
rfSensoringInterval += dt;
if( 0.32f <= rfSensoringInterval )
{
rfSensoringInterval = 0;
// check if the player is in a visible position and update 'rvDesiredDirection' and 'rsMode'
short sSearchResult = 0;
rBaseEntity.SearchPlayer( &rEntity, sSearchResult, rvDesiredDirection, &fSqDistToPlayer );
if( sSearchResult == STATE_ATTACK )
{ // the player is in sight - engage
rsCurrentState = STATE_ATTACK;
rBaseEntity.UpdateDesiredYawAndPitch( &rEntity, rvDesiredDirection );
pExtraData->vLastCheckedDirectionToPlayer = rvDesiredDirection;
pExtraData->fLastCheckedSqDistToPlayer = fSqDistToPlayer;
pExtraData->vLastCheckedPlayerPosition = rvDesiredDirection * (float)sqrt(fSqDistToPlayer);
return;
}
else
{ // lost sight of the player
if( pExtraData->vLastCheckedPlayerPosition != Vector3(0,0,0) )
{
Vector3 vDir = pExtraData->vLastCheckedPlayerPosition - rEntity.GetWorldPosition();
Vec3Normalize( rvDesiredDirection, vDir );
}
}
}
rBaseEntity.SearchManeuver(&rEntity,pExtraData);
}
void EntityManager::InitEntity( boost::shared_ptr<CCopyEntity> pNewCopyEntPtr,
CCopyEntity *pParent,
BaseEntity *pBaseEntity,
CActorDesc* pPhysActorDesc )
{
CCopyEntity* pNewCopyEnt = pNewCopyEntPtr.get();
// Mark the entity as in use
pNewCopyEnt->inuse = true;
pNewCopyEnt->m_pSelf = pNewCopyEntPtr;
pNewCopyEnt->pBaseEntity = pBaseEntity;
BaseEntity& rBaseEntity = (*pBaseEntity);
pNewCopyEnt->m_pStage = m_pStage;
// set id and increment the counter
pNewCopyEnt->m_ID = m_EntityIDConter++;
// z-sort is disabled by default initialization
// Entities that have translucent polygons have to turn on their copy entities'
// 'BETYPE_USE_ZSORT' in InitCopyEntity()
if( pNewCopyEnt->m_TypeID == CCopyEntityTypeID::ALPHA_ENTITY )
{
// For alpha entity, always use the z-sorting
pNewCopyEnt->RaiseEntityFlags( BETYPE_USE_ZSORT );
}
else
{
// Otherwise, disable z-sorting by default
pNewCopyEnt->ClearEntityFlags( BETYPE_USE_ZSORT );
}
// set the glare type
if( rBaseEntity.m_EntityFlag & BETYPE_GLARESOURCE )
{
pNewCopyEnt->RaiseEntityFlags( BETYPE_GLARESOURCE );
}
else if( rBaseEntity.m_EntityFlag & BETYPE_GLAREHINDER )
{
pNewCopyEnt->RaiseEntityFlags( BETYPE_GLAREHINDER );
}
// update world aabb
pNewCopyEnt->world_aabb.TransformCoord( pNewCopyEnt->local_aabb, pNewCopyEnt->GetWorldPosition() );
// link the new copy-entity to the top of 'm_pEntityInUse'
if( m_pEntityInUse )
pNewCopyEnt->SetNext( m_pEntityInUse );
else
pNewCopyEnt->SetNextToNull(); // first entity in the link list
m_pEntityInUse = pNewCopyEntPtr;
// set the created time of the entity
pNewCopyEnt->m_CreatedTime = m_pStage->GetElapsedTime();
// set parent entity
pNewCopyEnt->m_pParent = pParent;
if( pNewCopyEnt->m_pParent )
{
// 'pNewCopyEnt' is being created as a child of another copy entity
pNewCopyEnt->m_pParent->AddChild( pNewCopyEnt->m_pSelf ); // establish link from the parent to this entity
}
// LOG_PRINT( "linking a copy entity of " + rBaseEntity.GetNameString() + " to the tree" );
// link the new copy-entity to the entity-tree
Link( pNewCopyEnt );
// update light information
if( pNewCopyEnt->Lighting() )
{
pNewCopyEnt->ClearLights();
// UpdateLightInfo( pNewCopyEnt );
pNewCopyEnt->sState |= CESTATE_LIGHT_INFORMATION_INVALID;
}
// create object for physics simulation
if( pNewCopyEnt->GetEntityFlags() & BETYPE_RIGIDBODY )
{
CActor *pPhysActor = NULL;
if( pPhysActorDesc )
{
pPhysActorDesc->WorldPose = pNewCopyEnt->GetWorldPose();// * pNewCopyEnt->GetActorLocalPose();
pPhysActorDesc->BodyDesc.LinearVelocity = pNewCopyEnt->Velocity();
// each entity has its own actor desc
pPhysActor = m_pStage->GetPhysicsScene()->CreateActor( *pPhysActorDesc );
}
else if( pBaseEntity->GetPhysicsActorDesc().IsValid() )
{
// actor desc is defined by entity attributes
CActorDesc actor_desc = pBaseEntity->GetPhysicsActorDesc();
actor_desc.WorldPose = pNewCopyEnt->GetWorldPose();
actor_desc.BodyDesc.LinearVelocity = pNewCopyEnt->Velocity();
// pNewCopyEnt->pPhysicsActor = m_pStage->GetPhysicsScene()->CreateActor( actor_desc );
pPhysActor = m_pStage->GetPhysicsScene()->CreateActor( actor_desc );
}
if( pPhysActor )
{
pNewCopyEnt->m_vecpPhysicsActor.resize( 1 );
pNewCopyEnt->m_vecpPhysicsActor[0] = pPhysActor;
pPhysActor->m_pFrameworkData = pNewCopyEnt;
}
}
// When all the basic properties are copied, InitCopyEntity() is called to
// do additional initialization specific to each base entity.
rBaseEntity.InitCopyEntity( pNewCopyEnt );
}
/**
Update all the entities cerrently existing in the stage.
This function must be called once per frame.
- Basic steps
- 1. Call BaseEntity::UpdateBaseEntity( dt ) for each base entity
- 2. Save positions of copy entities
- 3. Run physics simulator
- 4. Remove terminated entities from the active list
- 5. Call CCopyEntity::Act() for each copy entity except for child entities
- 6. Update link to the entity tree node if an entity has changed its position in Act()
TODO: Do 5 & 6 in a single loop to update link for each entity right after is Act().
Current code does this in separate loops.
*/
void EntityManager::UpdateAllEntities( float dt )
{
CCopyEntity *pEntity = NULL;
CCopyEntity *pPrevEntity = NULL;
CCopyEntity *pTouchedEnt = NULL;
ONCE( LOG_PRINT( " - updating base entities" ) );
size_t i, num_base_entities = m_vecpBaseEntity.size();
for( i=0; i<num_base_entities; i++ )
{
m_vecpBaseEntity[i]->UpdateBaseEntity( dt );
}
// save the current entity positions
for( pEntity = m_pEntityInUse.get();
pEntity != NULL;
pEntity = pEntity->m_pNextRawPtr )
{
pEntity->PrevPosition() = pEntity->GetWorldPosition();
}
// run physics simulator
// entity position may be modified in this call
UpdatePhysics( dt );
ONCE( LOG_PRINT( " - updated physics" ) );
// remove terminated entities from the active entity list
ReleaseTerminatedEntities();
ONCE( LOG_PRINT( " - removed terminated entities from the active entity list" ) );
// update active entities
for( pEntity = this->m_pEntityInUse.get(), pPrevEntity = NULL;
pEntity != NULL;
pPrevEntity = pEntity, pEntity = pEntity->m_pNextRawPtr )
{
// before updating pEntity, check if it has been terminated.
if( !pEntity->inuse )
continue;
// set the results of physics simulation to
// pose, velocity and angular velocity of the entity
// if( pEntity->pPhysicsActor && pEntity->GetEntityFlags() & BETYPE_USE_PHYSSIM_RESULTS )
if( 0 < pEntity->m_vecpPhysicsActor.size() && pEntity->GetEntityFlags() & BETYPE_USE_PHYSSIM_RESULTS )
pEntity->UpdatePhysics();
if( pEntity->sState & CESTATE_ATREST )
continue;
if( !pEntity->m_pParent || !pEntity->m_pParent->inuse )
{
// 'pEntity' has no parent or its parent is already terminated
pEntity->pBaseEntity->Act( pEntity );
}
if( !pEntity->inuse )
continue; // terminated in its own update routine
UpdateEntityAfterMoving( pEntity );
// deal with entities touched during this frame
for(int i=0; i<pEntity->vecpTouchedEntity.size(); i++)
{
pTouchedEnt = pEntity->vecpTouchedEntity[i];
pEntity->pBaseEntity->Touch( pEntity, pTouchedEnt );
if( pTouchedEnt )
pTouchedEnt->pBaseEntity->Touch( pTouchedEnt, pEntity );
}
// clear touched entities for the next frame
pEntity->vecpTouchedEntity.clear();
}
ONCE( LOG_PRINT( " - updated active entities" ) );
// unlink and link the entity in the entity tree if it changed its position
/*
for( pEntity = m_pEntityInUse.get();
pEntity != NULL;
pPrevEntity = pEntity, pEntity = pEntity->m_pNextRawPtr )
{
if( !pEntity->inuse )
continue;
UpdateEntityAfterMoving();
}
*/
}
bool CBE_Enemy::CheckRayToPlayer( CCopyEntity* pCopyEnt )
{
CCopyEntity* pPlayer = SinglePlayerInfo().GetCurrentPlayerBaseEntity()->GetPlayerCopyEntity();
/// CCopyEntity* pPlayer = PlayerShip.GetPlayerCopyEntity();
STrace tr;
Vector3 vCurrentPos = pCopyEnt->GetWorldPosition();
Vector3 vGoal = pPlayer->GetWorldPosition();
tr.vStart = vCurrentPos;
tr.vGoal = vGoal;
tr.bvType = BVTYPE_DOT;
tr.fRadius = 0;
tr.pSourceEntity = pCopyEnt;
tr.sTraceType = TRACETYPE_IGNORE_NOCLIP_ENTITIES;
Vector3 vDirToPlayer = vGoal - vCurrentPos;
Vec3Normalize( vDirToPlayer, vDirToPlayer ); // normalization
short sRadarPenetrationCount = 2;
short sRadarState = ERS_NOT_IN_SOLID;
while( 0 <= sRadarPenetrationCount )
{
if( sRadarState == ERS_NOT_IN_SOLID )
{ // check trace to the player
// tr.vStart = vCurrentPos;
// vGoal = &pPlayer->GetWorldPosition();
tr.in_solid = false;
tr.fFraction = 1.0f;
this->m_pStage->ClipTrace( tr );
vCurrentPos = tr.vEnd;
if( tr.fFraction < 1.0f ) // hit something
{
if( tr.pTouchedEntity == pPlayer )
return true; // player is in a visible position
else
{ // hit static geometry or another entity
sRadarState = ERS_IN_SOLID;
vCurrentPos += vDirToPlayer * 0.01f; // put 'vCurrentPos' in solid region
sRadarPenetrationCount--;
continue;
}
}
else // i.e. tr.fFraction == 1.0f
{ // no hit - an exception. trace should at least hit the player
return false;
}
}
else // i.e. sRadarState == ERS_IN_SOLID
{
vCurrentPos += vDirToPlayer * CBE_ENEMY_RADAR_PENETRATION_CALC_STEP;
tr.vEnd = vCurrentPos;
tr.fFraction = 1.0f;
tr.in_solid = false;
m_pStage->CheckPosition( tr );
if( tr.in_solid )
{ // proceeding inside the material
sRadarPenetrationCount--;
continue;
}
else
{ // penetrated through the material
// move a little forward so that 'vCurrentPos' can safely get out of the wall
vCurrentPos += vDirToPlayer * 0.05f;
sRadarState = ERS_NOT_IN_SOLID;
continue;
}
}
}
// player is not visible to this enemy entity
return false;
}
void GravityGun::Update( float dt )
{
if( !IsWeaponSelected() )
return;
// Vector3 vOwnerMuzzlePos = rWeaponSystem.m_vMuzzlePosition + rWeaponSystem.m_vMuzzleDirection * 0.25f
// + rWeaponSystem.m_vMuzzleDir_Up * 0.90f;
Vector3 vOwnerMuzzlePos = m_MuzzleEndWorldPose.vPosition;
CCopyEntity *pTarget = m_Target.GetRawPtr();
if( pTarget )
{
// calc the translation from the center of the target to the muzzle position
Vector3 vDist = vOwnerMuzzlePos - pTarget->GetWorldPosition();
float fDistSq = Vec3LengthSq(vDist);
if( m_fMaxRange * m_fMaxRange < fDistSq )
{
m_iHoldingTargetToggle = 0;
// m_pTarget->pPhysicsActor->SetAllowFreezing( true );
m_Target.Reset();
return;
}
STrace tr;
tr.bvType = BVTYPE_DOT;
tr.vStart = vOwnerMuzzlePos;
Vector3 vGoal = pTarget->GetWorldPosition();
tr.vGoal = vGoal;
tr.sTraceType = TRACETYPE_IGNORE_NOCLIP_ENTITIES;
/*
CTrace tr;
tr.BVType = BVTYPE_DOT;
tr.vStart = &vOwnerMuzzlePos;
tr.vGoal = &pTarget->GetWorldPosition();
tr.TypeFlags = CTrace::FLAG_IGNORE_NOCLIP_ENTITIES;//TRACETYPE_IGNORE_NOCLIP_ENTITIES;
*/
// check trace
CStageSharedPtr pStage = m_pStage.lock();
if( pStage )
pStage->ClipTrace( tr );
if( tr.pTouchedEntity != pTarget )
{
// found an obstacle between the player and the target object
// - unable to hold the target any more
m_iHoldingTargetToggle = 0;
// m_pTarget->pPhysicsActor->SetAllowFreezing( true );
m_Target.Reset();
return;
}
if( fDistSq < m_fGraspRange * m_fGraspRange || m_aTriggerState[1] == 1 )
{
// the gravity gun is holding the target object
// account for the target object's size so that it does not bump into the shooter
float fDist = sqrtf(fDistSq);
Vector3 vDir = vDist / fDist; // normalization
fDist -= ( pTarget->fRadius + 0.2f );
vDist = vDir * fDist;
// calc relative velocity
Vector3 vRVel = pTarget->Velocity() - m_vMuzzleEndVelocity;
Vector3 vForce;
// vForce = m_fPosGain * vDist - m_fSpeedGain * vRVel;
// m_pTarget->ApplyWorldImpulse( vForce, m_pTarget->GetWorldPosition());
if( 6.0f < fDist )
vForce = vDir * 6.0f * 2.5f;
else if( fDist < 0.6f )
vForce = vDir * fDist * 8.0f;
else
// vForce = vDir * fDist * 2.5f;
vForce = vDir * ( fDist * 2.0f + 3.0f );
vForce += m_vMuzzleEndVelocity;
physics::CActor *pPhysicsActor = pTarget->GetPrimaryPhysicsActor();
if( pPhysicsActor )
pPhysicsActor->SetLinearVelocity( vForce );
/* Vector3 vPos = m_pTarget->pPhysicsActor->GetPosition();
Vector3 vVel = m_pTarget->pPhysicsActor->GetVelocity();
SmoothCD( vPos, vPos + vDist, vVel, 0.25f, dt );
if( 12.0f * 12.0f < Vec3LengthSq(vVel) )
{
Vec3Normalize( vVel, vVel );
vVel *= 12.0f;
}
m_pTarget->pPhysicsActor->SetVelocity( vVel );
*/
return;
}
else
{
// lost control of the target
m_iHoldingTargetToggle = 0;
ReleaseObject();
return;
}
}
}
bool GravityGun::HandleInput( int input_code, int input_type, float fParam )
{
Vector3 vOwnerMuzzlePos = m_MuzzleEndWorldPose.vPosition;
switch( input_code )
{
case ACTION_ATK_FIRE:
if( input_type == ITYPE_KEY_PRESSED )
{
m_aTriggerState[0] = 1;
CCopyEntity *pTarget = m_Target.GetRawPtr();
if( pTarget )
{
physics::CActor *pPhysicsActor = pTarget->GetPrimaryPhysicsActor();
Vector3 vDist = vOwnerMuzzlePos - pTarget->GetWorldPosition();
float fDistSq = Vec3LengthSq(vDist);
if( fDistSq < m_fGraspRange * m_fGraspRange )
{
Vector3 vImpulse = m_MuzzleEndLocalPose.matOrient.GetColumn(2) * m_fPower;
// shoot object
// pTarget->ApplyWorldImpulse( vImpulse, m_pTarget->GetWorldPosition() );
pPhysicsActor->SetLinearVelocity( vImpulse );
// release object
// m_pTarget->pPhysicsActor->SetAllowFreezing( true );
m_Target.Reset();
m_iHoldingTargetToggle = 0;
return true;
}
}
}
else if( input_type == ITYPE_KEY_RELEASED )
{
m_aTriggerState[0] = 0;
return true;
}
break;
case ACTION_ATK_RAISEWEAPON:
case ACTION_ATK_UNLOCK_TRIGGER_SAFETY:
if( input_type == ITYPE_KEY_PRESSED )
{
m_aTriggerState[1] = 1;
// the owner pulled the second trigger
m_iHoldingTargetToggle = ~m_iHoldingTargetToggle;
CCopyEntity *pTarget = m_Target.GetRawPtr();
if( !pTarget )
{
// trigger is pulled and the gravity gun is not holding any object right now
// - check if there is an object in the aim direction
return GraspObjectInAimDirection();
}
else
{
// trigger is pulled when the gun is holding an object
// - release the object
ReleaseObject();
return true;
}
}
else if( input_type == ITYPE_KEY_RELEASED )
{
m_aTriggerState[1] = 0;
return true;
}
break;
default:
break;
}
return false;
}
