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Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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source-engine/game/server/swarm/asw_spawn_manager.cpp

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upload "kind" alien swarm
1 year ago
#include "cbase.h"
#include "asw_spawn_manager.h"
#include "asw_marine.h"
#include "asw_marine_resource.h"
#include "asw_game_resource.h"
#include "iasw_spawnable_npc.h"
#include "asw_player.h"
#include "ai_network.h"
#include "ai_waypoint.h"
#include "ai_node.h"
#include "asw_director.h"
#include "asw_util_shared.h"
#include "asw_path_utils.h"
#include "asw_trace_filter_doors.h"
#include "asw_objective_escape.h"
#include "triggers.h"
#include "datacache/imdlcache.h"
#include "ai_link.h"
#include "asw_alien.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
CASW_Spawn_Manager g_Spawn_Manager;
CASW_Spawn_Manager* ASWSpawnManager() { return &g_Spawn_Manager; }
#define CANDIDATE_ALIEN_HULL 11 // TODO: have this use the hull of the alien type we're spawning a horde of?
#define MARINE_NEAR_DISTANCE 740.0f
extern ConVar asw_director_debug;
ConVar asw_horde_min_distance("asw_horde_min_distance", "800", FCVAR_CHEAT, "Minimum distance away from the marines the horde can spawn" );
ConVar asw_horde_max_distance("asw_horde_max_distance", "1500", FCVAR_CHEAT, "Maximum distance away from the marines the horde can spawn" );
ConVar asw_max_alien_batch("asw_max_alien_batch", "10", FCVAR_CHEAT, "Max number of aliens spawned in a horde batch" );
ConVar asw_batch_interval("asw_batch_interval", "5", FCVAR_CHEAT, "Time between successive batches spawning in the same spot");
ConVar asw_candidate_interval("asw_candidate_interval", "1.0", FCVAR_CHEAT, "Interval between updating candidate spawning nodes");
ConVar asw_horde_class( "asw_horde_class", "asw_drone", FCVAR_CHEAT, "Alien class used when spawning hordes" );
CASW_Spawn_Manager::CASW_Spawn_Manager()
{
m_nAwakeAliens = 0;
m_nAwakeDrones = 0;
}
CASW_Spawn_Manager::~CASW_Spawn_Manager()
{
}
// ==================================
// == Master list of alien classes ==
// ==================================
// NOTE: If you add new entries to this list, update the asw_spawner choices in swarm.fgd.
// Do not rearrange the order or you will be changing what spawns in all the maps.
ASW_Alien_Class_Entry g_Aliens[]=
{
ASW_Alien_Class_Entry( "asw_drone", HULL_MEDIUMBIG ),
ASW_Alien_Class_Entry( "asw_buzzer", HULL_TINY_CENTERED ),
ASW_Alien_Class_Entry( "asw_parasite", HULL_TINY ),
ASW_Alien_Class_Entry( "asw_shieldbug", HULL_LARGE ),
ASW_Alien_Class_Entry( "asw_grub", HULL_TINY ),
ASW_Alien_Class_Entry( "asw_drone_jumper", HULL_MEDIUMBIG ),
ASW_Alien_Class_Entry( "asw_harvester", HULL_HUMAN ),
ASW_Alien_Class_Entry( "asw_parasite_defanged", HULL_TINY ),
ASW_Alien_Class_Entry( "asw_queen", HULL_TINY ),
ASW_Alien_Class_Entry( "asw_boomer", HULL_HUMAN ),
ASW_Alien_Class_Entry( "asw_ranger", HULL_HUMAN ),
ASW_Alien_Class_Entry( "asw_mortarbug", HULL_LARGE ),
ASW_Alien_Class_Entry( "asw_shaman", HULL_LARGE ),
};
// Array indices of drones. Used by carnage mode.
const int g_nDroneClassEntry = 0;
const int g_nDroneJumperClassEntry = 5;
int CASW_Spawn_Manager::GetNumAlienClasses()
{
return NELEMS( g_Aliens );
}
ASW_Alien_Class_Entry* CASW_Spawn_Manager::GetAlienClass( int i )
{
Assert( i >= 0 && i < NELEMS( g_Aliens ) );
return &g_Aliens[ i ];
}
void CASW_Spawn_Manager::LevelInitPreEntity()
{
m_nAwakeAliens = 0;
m_nAwakeDrones = 0;
// init alien classes
for ( int i = 0; i < GetNumAlienClasses(); i++ )
{
GetAlienClass( i )->m_iszAlienClass = AllocPooledString( GetAlienClass( i )->m_pszAlienClass );
}
}
void CASW_Spawn_Manager::LevelInitPostEntity()
{
m_vecHordePosition = vec3_origin;
m_angHordeAngle = vec3_angle;
m_batchInterval.Invalidate();
m_CandidateUpdateTimer.Invalidate();
m_iHordeToSpawn = 0;
m_iAliensToSpawn = 0;
m_northCandidateNodes.Purge();
m_southCandidateNodes.Purge();
FindEscapeTriggers();
}
void CASW_Spawn_Manager::OnAlienWokeUp( CASW_Alien *pAlien )
{
m_nAwakeAliens++;
if ( pAlien && pAlien->Classify() == CLASS_ASW_DRONE )
{
m_nAwakeDrones++;
}
}
void CASW_Spawn_Manager::OnAlienSleeping( CASW_Alien *pAlien )
{
m_nAwakeAliens--;
if ( pAlien && pAlien->Classify() == CLASS_ASW_DRONE )
{
m_nAwakeDrones--;
}
}
// finds all trigger_multiples linked to asw_objective_escape entities
void CASW_Spawn_Manager::FindEscapeTriggers()
{
m_EscapeTriggers.Purge();
// go through all escape objectives
CBaseEntity* pEntity = NULL;
while ( (pEntity = gEntList.FindEntityByClassname( pEntity, "asw_objective_escape" )) != NULL )
{
CASW_Objective_Escape* pObjective = dynamic_cast<CASW_Objective_Escape*>(pEntity);
if ( !pObjective )
continue;
const char *pszEscapeTargetName = STRING( pObjective->GetEntityName() );
CBaseEntity* pOtherEntity = NULL;
while ( (pOtherEntity = gEntList.FindEntityByClassname( pOtherEntity, "trigger_multiple" )) != NULL )
{
CTriggerMultiple *pTrigger = dynamic_cast<CTriggerMultiple*>( pOtherEntity );
if ( !pTrigger )
continue;
bool bAdded = false;
CBaseEntityOutput *pOutput = pTrigger->FindNamedOutput( "OnTrigger" );
if ( pOutput )
{
CEventAction *pAction = pOutput->GetFirstAction();
while ( pAction )
{
if ( !Q_stricmp( STRING( pAction->m_iTarget ), pszEscapeTargetName ) )
{
bAdded = true;
m_EscapeTriggers.AddToTail( pTrigger );
break;
}
pAction = pAction->m_pNext;
}
}
if ( !bAdded )
{
pOutput = pTrigger->FindNamedOutput( "OnStartTouch" );
if ( pOutput )
{
CEventAction *pAction = pOutput->GetFirstAction();
while ( pAction )
{
if ( !Q_stricmp( STRING( pAction->m_iTarget ), pszEscapeTargetName ) )
{
bAdded = true;
m_EscapeTriggers.AddToTail( pTrigger );
break;
}
pAction = pAction->m_pNext;
}
}
}
}
}
Msg("Spawn manager found %d escape triggers\n", m_EscapeTriggers.Count() );
}
void CASW_Spawn_Manager::Update()
{
if ( m_iHordeToSpawn > 0 )
{
if ( m_vecHordePosition != vec3_origin && ( !m_batchInterval.HasStarted() || m_batchInterval.IsElapsed() ) )
{
int iToSpawn = MIN( m_iHordeToSpawn, asw_max_alien_batch.GetInt() );
int iSpawned = SpawnAlienBatch( asw_horde_class.GetString(), iToSpawn, m_vecHordePosition, m_angHordeAngle, 0 );
m_iHordeToSpawn -= iSpawned;
if ( m_iHordeToSpawn <= 0 )
{
ASWDirector()->OnHordeFinishedSpawning();
m_vecHordePosition = vec3_origin;
}
else if ( iSpawned == 0 ) // if we failed to spawn any aliens, then try to find a new horde location
{
if ( asw_director_debug.GetBool() )
{
Msg( "Horde failed to spawn any aliens, trying new horde position.\n" );
}
if ( !FindHordePosition() ) // if we failed to find a new location, just abort this horde
{
m_iHordeToSpawn = 0;
ASWDirector()->OnHordeFinishedSpawning();
m_vecHordePosition = vec3_origin;
}
}
m_batchInterval.Start( asw_batch_interval.GetFloat() );
}
else if ( m_vecHordePosition == vec3_origin )
{
Msg( "Warning: Had horde to spawn but no position, clearing.\n" );
m_iHordeToSpawn = 0;
ASWDirector()->OnHordeFinishedSpawning();
}
}
if ( asw_director_debug.GetBool() )
{
engine->Con_NPrintf( 14, "SM: Batch interval: %f pos = %f %f %f\n", m_batchInterval.HasStarted() ? m_batchInterval.GetRemainingTime() : -1, VectorExpand( m_vecHordePosition ) );
}
if ( m_iAliensToSpawn > 0 )
{
if ( SpawnAlientAtRandomNode() )
m_iAliensToSpawn--;
}
}
void CASW_Spawn_Manager::AddAlien()
{
// don't stock up more than 10 wanderers at once
if ( m_iAliensToSpawn > 10 )
return;
m_iAliensToSpawn++;
}
bool CASW_Spawn_Manager::SpawnAlientAtRandomNode()
{
UpdateCandidateNodes();
// decide if the alien is going to come from behind or in front
bool bNorth = RandomFloat() < 0.7f;
if ( m_northCandidateNodes.Count() <= 0 )
{
bNorth = false;
}
else if ( m_southCandidateNodes.Count() <= 0 )
{
bNorth = true;
}
CUtlVector<int> &candidateNodes = bNorth ? m_northCandidateNodes : m_southCandidateNodes;
if ( candidateNodes.Count() <= 0 )
return false;
const char *szAlienClass = "asw_drone";
Vector vecMins, vecMaxs;
GetAlienBounds( szAlienClass, vecMins, vecMaxs );
int iMaxTries = 1;
for ( int i=0 ; i<iMaxTries ; i++ )
{
int iChosen = RandomInt( 0, candidateNodes.Count() - 1);
CAI_Node *pNode = GetNetwork()->GetNode( candidateNodes[iChosen] );
if ( !pNode )
continue;
float flDistance = 0;
CASW_Marine *pMarine = dynamic_cast<CASW_Marine*>(UTIL_ASW_NearestMarine( pNode->GetPosition( CANDIDATE_ALIEN_HULL ), flDistance ));
if ( !pMarine )
return false;
// check if there's a route from this node to the marine(s)
AI_Waypoint_t *pRoute = ASWPathUtils()->BuildRoute( pNode->GetPosition( CANDIDATE_ALIEN_HULL ), pMarine->GetAbsOrigin(), NULL, 100 );
if ( !pRoute )
{
if ( asw_director_debug.GetBool() )
{
NDebugOverlay::Cross3D( pNode->GetOrigin(), 10.0f, 255, 128, 0, true, 20.0f );
}
continue;
}
if ( bNorth && UTIL_ASW_DoorBlockingRoute( pRoute, true ) )
{
DeleteRoute( pRoute );
continue;
}
Vector vecSpawnPos = pNode->GetPosition( CANDIDATE_ALIEN_HULL ) + Vector( 0, 0, 32 );
if ( ValidSpawnPoint( vecSpawnPos, vecMins, vecMaxs, true, MARINE_NEAR_DISTANCE ) )
{
if ( SpawnAlienAt( szAlienClass, vecSpawnPos, vec3_angle ) )
{
if ( asw_director_debug.GetBool() )
{
NDebugOverlay::Cross3D( vecSpawnPos, 25.0f, 255, 255, 255, true, 20.0f );
float flDist;
CASW_Marine *pMarine = UTIL_ASW_NearestMarine( vecSpawnPos, flDist );
if ( pMarine )
{
NDebugOverlay::Line( pMarine->GetAbsOrigin(), vecSpawnPos, 64, 64, 64, true, 60.0f );
}
}
DeleteRoute( pRoute );
return true;
}
}
else
{
if ( asw_director_debug.GetBool() )
{
NDebugOverlay::Cross3D( vecSpawnPos, 25.0f, 255, 0, 0, true, 20.0f );
}
}
DeleteRoute( pRoute );
}
return false;
}
bool CASW_Spawn_Manager::AddHorde( int iHordeSize )
{
m_iHordeToSpawn = iHordeSize;
if ( m_vecHordePosition == vec3_origin )
{
if ( !FindHordePosition() )
{
Msg("Error: Failed to find horde position\n");
return false;
}
else
{
if ( asw_director_debug.GetBool() )
{
NDebugOverlay::Cross3D( m_vecHordePosition, 50.0f, 255, 128, 0, true, 60.0f );
float flDist;
CASW_Marine *pMarine = UTIL_ASW_NearestMarine( m_vecHordePosition, flDist );
if ( pMarine )
{
NDebugOverlay::Line( pMarine->GetAbsOrigin(), m_vecHordePosition, 255, 128, 0, true, 60.0f );
}
}
}
}
return true;
}
CAI_Network* CASW_Spawn_Manager::GetNetwork()
{
return g_pBigAINet;
}
void CASW_Spawn_Manager::UpdateCandidateNodes()
{
// don't update too frequently
if ( m_CandidateUpdateTimer.HasStarted() && !m_CandidateUpdateTimer.IsElapsed() )
return;
m_CandidateUpdateTimer.Start( asw_candidate_interval.GetFloat() );
if ( !GetNetwork() || !GetNetwork()->NumNodes() )
{
m_vecHordePosition = vec3_origin;
Msg("Error: Can't spawn hordes as this map has no node network\n");
return;
}
CASW_Game_Resource *pGameResource = ASWGameResource();
if ( !pGameResource )
return;
Vector vecSouthMarine = vec3_origin;
Vector vecNorthMarine = vec3_origin;
for ( int i=0;i<pGameResource->GetMaxMarineResources();i++ )
{
CASW_Marine_Resource *pMR = pGameResource->GetMarineResource(i);
if ( !pMR )
continue;
CASW_Marine *pMarine = pMR->GetMarineEntity();
if ( !pMarine || pMarine->GetHealth() <= 0 )
continue;
if ( vecSouthMarine == vec3_origin || vecSouthMarine.y > pMarine->GetAbsOrigin().y )
{
vecSouthMarine = pMarine->GetAbsOrigin();
}
if ( vecNorthMarine == vec3_origin || vecNorthMarine.y < pMarine->GetAbsOrigin().y )
{
vecNorthMarine = pMarine->GetAbsOrigin();
}
}
if ( vecSouthMarine == vec3_origin || vecNorthMarine == vec3_origin ) // no live marines
return;
int iNumNodes = GetNetwork()->NumNodes();
m_northCandidateNodes.Purge();
m_southCandidateNodes.Purge();
for ( int i=0 ; i<iNumNodes; i++ )
{
CAI_Node *pNode = GetNetwork()->GetNode( i );
if ( !pNode || pNode->GetType() != NODE_GROUND )
continue;
Vector vecPos = pNode->GetPosition( CANDIDATE_ALIEN_HULL );
// find the nearest marine to this node
float flDistance = 0;
CASW_Marine *pMarine = dynamic_cast<CASW_Marine*>(UTIL_ASW_NearestMarine( vecPos, flDistance ));
if ( !pMarine )
return;
if ( flDistance > asw_horde_max_distance.GetFloat() || flDistance < asw_horde_min_distance.GetFloat() )
continue;
// check node isn't in an exit trigger
bool bInsideEscapeArea = false;
for ( int d=0; d<m_EscapeTriggers.Count(); d++ )
{
if ( m_EscapeTriggers[d]->CollisionProp()->IsPointInBounds( vecPos ) )
{
bInsideEscapeArea = true;
break;
}
}
if ( bInsideEscapeArea )
continue;
if ( vecPos.y >= vecSouthMarine.y )
{
if ( asw_director_debug.GetInt() == 3 )
{
NDebugOverlay::Box( vecPos, -Vector( 5, 5, 5 ), Vector( 5, 5, 5 ), 32, 32, 128, 10, 60.0f );
}
m_northCandidateNodes.AddToTail( i );
}
if ( vecPos.y <= vecNorthMarine.y )
{
m_southCandidateNodes.AddToTail( i );
if ( asw_director_debug.GetInt() == 3 )
{
NDebugOverlay::Box( vecPos, -Vector( 5, 5, 5 ), Vector( 5, 5, 5 ), 128, 32, 32, 10, 60.0f );
}
}
}
}
bool CASW_Spawn_Manager::FindHordePosition()
{
// need to find a suitable place from which to spawn a horde
// this place should:
// - be far enough away from the marines so the whole horde can spawn before the marines get there
// - should have a clear path to the marines
UpdateCandidateNodes();
// decide if the horde is going to come from behind or in front
bool bNorth = RandomFloat() < 0.7f;
if ( m_northCandidateNodes.Count() <= 0 )
{
bNorth = false;
}
else if ( m_southCandidateNodes.Count() <= 0 )
{
bNorth = true;
}
CUtlVector<int> &candidateNodes = bNorth ? m_northCandidateNodes : m_southCandidateNodes;
if ( candidateNodes.Count() <= 0 )
{
if ( asw_director_debug.GetBool() )
{
Msg( " Failed to find horde pos as there are no candidate nodes\n" );
}
return false;
}
int iMaxTries = 3;
for ( int i=0 ; i<iMaxTries ; i++ )
{
int iChosen = RandomInt( 0, candidateNodes.Count() - 1);
CAI_Node *pNode = GetNetwork()->GetNode( candidateNodes[iChosen] );
if ( !pNode )
continue;
float flDistance = 0;
CASW_Marine *pMarine = dynamic_cast<CASW_Marine*>(UTIL_ASW_NearestMarine( pNode->GetPosition( CANDIDATE_ALIEN_HULL ), flDistance ));
if ( !pMarine )
{
if ( asw_director_debug.GetBool() )
{
Msg( " Failed to find horde pos as there is no nearest marine\n" );
}
return false;
}
// check if there's a route from this node to the marine(s)
AI_Waypoint_t *pRoute = ASWPathUtils()->BuildRoute( pNode->GetPosition( CANDIDATE_ALIEN_HULL ), pMarine->GetAbsOrigin(), NULL, 100 );
if ( !pRoute )
{
if ( asw_director_debug.GetInt() >= 2 )
{
Msg( " Discarding horde node %d as there's no route.\n", iChosen );
}
continue;
}
if ( bNorth && UTIL_ASW_DoorBlockingRoute( pRoute, true ) )
{
if ( asw_director_debug.GetInt() >= 2 )
{
Msg( " Discarding horde node %d as there's a door in the way.\n", iChosen );
}
DeleteRoute( pRoute );
continue;
}
m_vecHordePosition = pNode->GetPosition( CANDIDATE_ALIEN_HULL ) + Vector( 0, 0, 32 );
// spawn facing the nearest marine
Vector vecDir = pMarine->GetAbsOrigin() - m_vecHordePosition;
vecDir.z = 0;
vecDir.NormalizeInPlace();
VectorAngles( vecDir, m_angHordeAngle );
if ( asw_director_debug.GetInt() >= 2 )
{
Msg( " Accepting horde node %d.\n", iChosen );
}
DeleteRoute( pRoute );
return true;
}
if ( asw_director_debug.GetBool() )
{
Msg( " Failed to find horde pos as we tried 3 times to build routes to possible locations, but failed\n" );
}
return false;
}
bool CASW_Spawn_Manager::LineBlockedByGeometry( const Vector &vecSrc, const Vector &vecEnd )
{
trace_t tr;
UTIL_TraceLine( vecSrc,
vecEnd, MASK_SOLID_BRUSHONLY,
NULL, COLLISION_GROUP_NONE, &tr );
return ( tr.fraction != 1.0f );
}
bool CASW_Spawn_Manager::GetAlienBounds( const char *szAlienClass, Vector &vecMins, Vector &vecMaxs )
{
int nCount = GetNumAlienClasses();
for ( int i = 0 ; i < nCount; i++ )
{
if ( !Q_stricmp( szAlienClass, GetAlienClass( i )->m_pszAlienClass ) )
{
vecMins = NAI_Hull::Mins( GetAlienClass( i )->m_nHullType );
vecMaxs = NAI_Hull::Maxs (GetAlienClass( i )->m_nHullType );
return true;
}
}
return false;
}
bool CASW_Spawn_Manager::GetAlienBounds( string_t iszAlienClass, Vector &vecMins, Vector &vecMaxs )
{
int nCount = GetNumAlienClasses();
for ( int i = 0 ; i < nCount; i++ )
{
if ( iszAlienClass == GetAlienClass( i )->m_iszAlienClass )
{
vecMins = NAI_Hull::Mins( GetAlienClass( i )->m_nHullType );
vecMaxs = NAI_Hull::Maxs (GetAlienClass( i )->m_nHullType );
return true;
}
}
return false;
}
// spawn a group of aliens at the target point
int CASW_Spawn_Manager::SpawnAlienBatch( const char* szAlienClass, int iNumAliens, const Vector &vecPosition, const QAngle &angFacing, float flMarinesBeyondDist )
{
int iSpawned = 0;
bool bCheckGround = true;
Vector vecMins = NAI_Hull::Mins(HULL_MEDIUMBIG);
Vector vecMaxs = NAI_Hull::Maxs(HULL_MEDIUMBIG);
GetAlienBounds( szAlienClass, vecMins, vecMaxs );
float flAlienWidth = vecMaxs.x - vecMins.x;
float flAlienDepth = vecMaxs.y - vecMins.y;
// spawn one in the middle
if ( ValidSpawnPoint( vecPosition, vecMins, vecMaxs, bCheckGround, flMarinesBeyondDist ) )
{
if ( SpawnAlienAt( szAlienClass, vecPosition, angFacing ) )
iSpawned++;
}
// try to spawn a 5x5 grid of aliens, starting at the centre and expanding outwards
Vector vecNewPos = vecPosition;
for ( int i=1; i<=5 && iSpawned < iNumAliens; i++ )
{
QAngle angle = angFacing;
angle[YAW] += RandomFloat( -20, 20 );
// spawn aliens along top of box
for ( int x=-i; x<=i && iSpawned < iNumAliens; x++ )
{
vecNewPos = vecPosition;
vecNewPos.x += x * flAlienWidth;
vecNewPos.y -= i * flAlienDepth;
if ( !LineBlockedByGeometry( vecPosition, vecNewPos) && ValidSpawnPoint( vecNewPos, vecMins, vecMaxs, bCheckGround, flMarinesBeyondDist ) )
{
if ( SpawnAlienAt( szAlienClass, vecNewPos, angle ) )
iSpawned++;
}
}
// spawn aliens along bottom of box
for ( int x=-i; x<=i && iSpawned < iNumAliens; x++ )
{
vecNewPos = vecPosition;
vecNewPos.x += x * flAlienWidth;
vecNewPos.y += i * flAlienDepth;
if ( !LineBlockedByGeometry( vecPosition, vecNewPos) && ValidSpawnPoint( vecNewPos, vecMins, vecMaxs, bCheckGround, flMarinesBeyondDist ) )
{
if ( SpawnAlienAt( szAlienClass, vecNewPos, angle ) )
iSpawned++;
}
}
// spawn aliens along left of box
for ( int y=-i + 1; y<i && iSpawned < iNumAliens; y++ )
{
vecNewPos = vecPosition;
vecNewPos.x -= i * flAlienWidth;
vecNewPos.y += y * flAlienDepth;
if ( !LineBlockedByGeometry( vecPosition, vecNewPos) && ValidSpawnPoint( vecNewPos, vecMins, vecMaxs, bCheckGround, flMarinesBeyondDist ) )
{
if ( SpawnAlienAt( szAlienClass, vecNewPos, angle ) )
iSpawned++;
}
}
// spawn aliens along right of box
for ( int y=-i + 1; y<i && iSpawned < iNumAliens; y++ )
{
vecNewPos = vecPosition;
vecNewPos.x += i * flAlienWidth;
vecNewPos.y += y * flAlienDepth;
if ( !LineBlockedByGeometry( vecPosition, vecNewPos) && ValidSpawnPoint( vecNewPos, vecMins, vecMaxs, bCheckGround, flMarinesBeyondDist ) )
{
if ( SpawnAlienAt( szAlienClass, vecNewPos, angle ) )
iSpawned++;
}
}
}
return iSpawned;
}
CBaseEntity* CASW_Spawn_Manager::SpawnAlienAt(const char* szAlienClass, const Vector& vecPos, const QAngle &angle)
{
CBaseEntity *pEntity = NULL;
pEntity = CreateEntityByName( szAlienClass );
CAI_BaseNPC *pNPC = dynamic_cast<CAI_BaseNPC*>(pEntity);
if ( pNPC )
{
pNPC->AddSpawnFlags( SF_NPC_FALL_TO_GROUND );
}
// Strip pitch and roll from the spawner's angles. Pass only yaw to the spawned NPC.
QAngle angles = angle;
angles.x = 0.0;
angles.z = 0.0;
pEntity->SetAbsOrigin( vecPos );
pEntity->SetAbsAngles( angles );
UTIL_DropToFloor( pEntity, MASK_SOLID );
IASW_Spawnable_NPC* pSpawnable = dynamic_cast<IASW_Spawnable_NPC*>(pEntity);
ASSERT(pSpawnable);
if ( !pSpawnable )
{
Warning("NULL Spawnable Ent in CASW_Spawn_Manager::SpawnAlienAt! AlienClass = %s\n", szAlienClass);
UTIL_Remove(pEntity);
return NULL;
}
// have drones unburrow by default, so we don't worry so much about them spawning onscreen
if ( !Q_strcmp( szAlienClass, "asw_drone" ) )
{
pSpawnable->StartBurrowed();
pSpawnable->SetUnburrowIdleActivity( NULL_STRING );
pSpawnable->SetUnburrowActivity( NULL_STRING );
}
DispatchSpawn( pEntity );
pEntity->Activate();
// give our aliens the orders
pSpawnable->SetAlienOrders(AOT_MoveToNearestMarine, vec3_origin, NULL);
return pEntity;
}
bool CASW_Spawn_Manager::ValidSpawnPoint( const Vector &vecPosition, const Vector &vecMins, const Vector &vecMaxs, bool bCheckGround, float flMarineNearDistance )
{
// check if we can fit there
trace_t tr;
UTIL_TraceHull( vecPosition,
vecPosition + Vector( 0, 0, 1 ),
vecMins,
vecMaxs,
MASK_NPCSOLID,
NULL,
COLLISION_GROUP_NONE,
&tr );
if( tr.fraction != 1.0 )
return false;
// check there's ground underneath this point
if ( bCheckGround )
{
UTIL_TraceHull( vecPosition + Vector( 0, 0, 1 ),
vecPosition - Vector( 0, 0, 64 ),
vecMins,
vecMaxs,
MASK_NPCSOLID,
NULL,
COLLISION_GROUP_NONE,
&tr );
if( tr.fraction == 1.0 )
return false;
}
if ( flMarineNearDistance > 0 )
{
CASW_Game_Resource* pGameResource = ASWGameResource();
float distance = 0.0f;
for ( int i=0 ; i < pGameResource->GetMaxMarineResources() ; i++ )
{
CASW_Marine_Resource* pMR = pGameResource->GetMarineResource(i);
if ( pMR && pMR->GetMarineEntity() && pMR->GetMarineEntity()->GetHealth() > 0 )
{
distance = pMR->GetMarineEntity()->GetAbsOrigin().DistTo( vecPosition );
if ( distance < flMarineNearDistance )
{
return false;
}
}
}
}
return true;
}
void CASW_Spawn_Manager::DeleteRoute( AI_Waypoint_t *pWaypointList )
{
while ( pWaypointList )
{
AI_Waypoint_t *pPrevWaypoint = pWaypointList;
pWaypointList = pWaypointList->GetNext();
delete pPrevWaypoint;
}
}
bool CASW_Spawn_Manager::SpawnRandomShieldbug()
{
int iNumNodes = g_pBigAINet->NumNodes();
if ( iNumNodes < 6 )
return false;
int nHull = HULL_WIDE_SHORT;
CUtlVector<CASW_Open_Area*> aAreas;
for ( int i = 0; i < 6; i++ )
{
CAI_Node *pNode = NULL;
int nTries = 0;
while ( nTries < 5 && ( !pNode || pNode->GetType() != NODE_GROUND ) )
{
pNode = g_pBigAINet->GetNode( RandomInt( 0, iNumNodes ) );
nTries++;
}
if ( pNode )
{
CASW_Open_Area *pArea = FindNearbyOpenArea( pNode->GetOrigin(), HULL_MEDIUMBIG );
if ( pArea && pArea->m_nTotalLinks > 30 )
{
// test if there's room to spawn a shieldbug at that spot
if ( ValidSpawnPoint( pArea->m_pNode->GetPosition( nHull ), NAI_Hull::Mins( nHull ), NAI_Hull::Maxs( nHull ), true, false ) )
{
aAreas.AddToTail( pArea );
}
else
{
delete pArea;
}
}
}
// stop searching once we have 3 acceptable candidates
if ( aAreas.Count() >= 3 )
break;
}
// find area with the highest connectivity
CASW_Open_Area *pBestArea = NULL;
for ( int i = 0; i < aAreas.Count(); i++ )
{
CASW_Open_Area *pArea = aAreas[i];
if ( !pBestArea || pArea->m_nTotalLinks > pBestArea->m_nTotalLinks )
{
pBestArea = pArea;
}
}
if ( pBestArea )
{
CBaseEntity *pAlien = SpawnAlienAt( "asw_shieldbug", pBestArea->m_pNode->GetPosition( nHull ), RandomAngle( 0, 360 ) );
IASW_Spawnable_NPC *pSpawnable = dynamic_cast<IASW_Spawnable_NPC*>( pAlien );
if ( pSpawnable )
{
pSpawnable->SetAlienOrders(AOT_SpreadThenHibernate, vec3_origin, NULL);
}
aAreas.PurgeAndDeleteElements();
return true;
}
aAreas.PurgeAndDeleteElements();
return false;
}
Vector TraceToGround( const Vector &vecPos )
{
trace_t tr;
UTIL_TraceLine( vecPos + Vector( 0, 0, 100 ), vecPos, MASK_NPCSOLID, NULL, ASW_COLLISION_GROUP_PARASITE, &tr );
return tr.endpos;
}
bool CASW_Spawn_Manager::SpawnRandomParasitePack( int nParasites )
{
int iNumNodes = g_pBigAINet->NumNodes();
if ( iNumNodes < 6 )
return false;
int nHull = HULL_TINY;
CUtlVector<CASW_Open_Area*> aAreas;
for ( int i = 0; i < 6; i++ )
{
CAI_Node *pNode = NULL;
int nTries = 0;
while ( nTries < 5 && ( !pNode || pNode->GetType() != NODE_GROUND ) )
{
pNode = g_pBigAINet->GetNode( RandomInt( 0, iNumNodes ) );
nTries++;
}
if ( pNode )
{
CASW_Open_Area *pArea = FindNearbyOpenArea( pNode->GetOrigin(), HULL_MEDIUMBIG );
if ( pArea && pArea->m_nTotalLinks > 30 )
{
// test if there's room to spawn a shieldbug at that spot
if ( ValidSpawnPoint( pArea->m_pNode->GetPosition( nHull ), NAI_Hull::Mins( nHull ), NAI_Hull::Maxs( nHull ), true, false ) )
{
aAreas.AddToTail( pArea );
}
else
{
delete pArea;
}
}
}
// stop searching once we have 3 acceptable candidates
if ( aAreas.Count() >= 3 )
break;
}
// find area with the highest connectivity
CASW_Open_Area *pBestArea = NULL;
for ( int i = 0; i < aAreas.Count(); i++ )
{
CASW_Open_Area *pArea = aAreas[i];
if ( !pBestArea || pArea->m_nTotalLinks > pBestArea->m_nTotalLinks )
{
pBestArea = pArea;
}
}
if ( pBestArea )
{
for ( int i = 0; i < nParasites; i++ )
{
CBaseEntity *pAlien = SpawnAlienAt( "asw_parasite", TraceToGround( pBestArea->m_pNode->GetPosition( nHull ) ), RandomAngle( 0, 360 ) );
IASW_Spawnable_NPC *pSpawnable = dynamic_cast<IASW_Spawnable_NPC*>( pAlien );
if ( pSpawnable )
{
pSpawnable->SetAlienOrders(AOT_SpreadThenHibernate, vec3_origin, NULL);
}
if ( asw_director_debug.GetBool() && pAlien )
{
Msg( "Spawned parasite at %f %f %f\n", pAlien->GetAbsOrigin() );
NDebugOverlay::Cross3D( pAlien->GetAbsOrigin(), 8.0f, 255, 0, 0, true, 20.0f );
}
}
aAreas.PurgeAndDeleteElements();
return true;
}
aAreas.PurgeAndDeleteElements();
return false;
}
// heuristic to find reasonably open space - searches for areas with high node connectivity
CASW_Open_Area* CASW_Spawn_Manager::FindNearbyOpenArea( const Vector &vecSearchOrigin, int nSearchHull )
{
CBaseEntity *pStartEntity = gEntList.FindEntityByClassname( NULL, "info_player_start" );
int iNumNodes = g_pBigAINet->NumNodes();
CAI_Node *pHighestConnectivity = NULL;
int nHighestLinks = 0;
for ( int i=0 ; i<iNumNodes; i++ )
{
CAI_Node *pNode = g_pBigAINet->GetNode( i );
if ( !pNode || pNode->GetType() != NODE_GROUND )
continue;
Vector vecPos = pNode->GetOrigin();
float flDist = vecPos.DistTo( vecSearchOrigin );
if ( flDist > 400.0f )
continue;
// discard if node is too near start location
if ( pStartEntity && vecPos.DistTo( pStartEntity->GetAbsOrigin() ) < 1400.0f ) // NOTE: assumes all start points are clustered near one another
continue;
// discard if node is inside an escape area
bool bInsideEscapeArea = false;
for ( int d=0; d<m_EscapeTriggers.Count(); d++ )
{
if ( m_EscapeTriggers[d]->CollisionProp()->IsPointInBounds( vecPos ) )
{
bInsideEscapeArea = true;
break;
}
}
if ( bInsideEscapeArea )
continue;
// count links that drones could follow
int nLinks = pNode->NumLinks();
int nValidLinks = 0;
for ( int k = 0; k < nLinks; k++ )
{
CAI_Link *pLink = pNode->GetLinkByIndex( k );
if ( !pLink )
continue;
if ( !( pLink->m_iAcceptedMoveTypes[nSearchHull] & bits_CAP_MOVE_GROUND ) )
continue;
nValidLinks++;
}
if ( nValidLinks > nHighestLinks )
{
nHighestLinks = nValidLinks;
pHighestConnectivity = pNode;
}
if ( asw_director_debug.GetBool() )
{
NDebugOverlay::Text( vecPos, UTIL_VarArgs( "%d", nValidLinks ), false, 10.0f );
}
}
if ( !pHighestConnectivity )
return NULL;
// now, starting at the new node, find all nearby nodes with a minimum connectivity
CASW_Open_Area *pArea = new CASW_Open_Area();
pArea->m_vecOrigin = pHighestConnectivity->GetOrigin();
pArea->m_pNode = pHighestConnectivity;
int nMinLinks = nHighestLinks * 0.3f;
nMinLinks = MAX( nMinLinks, 4 );
pArea->m_aAreaNodes.AddToTail( pHighestConnectivity );
if ( asw_director_debug.GetBool() )
{
Msg( "minLinks = %d\n", nMinLinks );
}
pArea->m_nTotalLinks = 0;
for ( int i=0 ; i<iNumNodes; i++ )
{
CAI_Node *pNode = g_pBigAINet->GetNode( i );
if ( !pNode || pNode->GetType() != NODE_GROUND )
continue;
Vector vecPos = pNode->GetOrigin();
float flDist = vecPos.DistTo( pArea->m_vecOrigin );
if ( flDist > 400.0f )
continue;
// discard if node is inside an escape area
bool bInsideEscapeArea = false;
for ( int d=0; d<m_EscapeTriggers.Count(); d++ )
{
if ( m_EscapeTriggers[d]->CollisionProp()->IsPointInBounds( vecPos ) )
{
bInsideEscapeArea = true;
break;
}
}
if ( bInsideEscapeArea )
continue;
// count links that drones could follow
int nLinks = pNode->NumLinks();
int nValidLinks = 0;
for ( int k = 0; k < nLinks; k++ )
{
CAI_Link *pLink = pNode->GetLinkByIndex( k );
if ( !pLink )
continue;
if ( !( pLink->m_iAcceptedMoveTypes[nSearchHull] & bits_CAP_MOVE_GROUND ) )
continue;
nValidLinks++;
}
if ( nValidLinks >= nMinLinks )
{
pArea->m_aAreaNodes.AddToTail( pNode );
pArea->m_nTotalLinks += nValidLinks;
}
}
// highlight and measure bounds
Vector vecAreaMins = Vector( FLT_MAX, FLT_MAX, FLT_MAX );
Vector vecAreaMaxs = Vector( -FLT_MAX, -FLT_MAX, -FLT_MAX );
for ( int i = 0; i < pArea->m_aAreaNodes.Count(); i++ )
{
vecAreaMins = VectorMin( vecAreaMins, pArea->m_aAreaNodes[i]->GetOrigin() );
vecAreaMaxs = VectorMax( vecAreaMaxs, pArea->m_aAreaNodes[i]->GetOrigin() );
if ( asw_director_debug.GetBool() )
{
if ( i == 0 )
{
NDebugOverlay::Cross3D( pArea->m_aAreaNodes[i]->GetOrigin(), 20.0f, 255, 255, 64, true, 10.0f );
}
else
{
NDebugOverlay::Cross3D( pArea->m_aAreaNodes[i]->GetOrigin(), 10.0f, 255, 128, 0, true, 10.0f );
}
}
}
Vector vecArea = ( vecAreaMaxs - vecAreaMins );
float flArea = vecArea.x * vecArea.y;
if ( asw_director_debug.GetBool() )
{
Msg( "area mins = %f %f %f\n", VectorExpand( vecAreaMins ) );
Msg( "area maxs = %f %f %f\n", VectorExpand( vecAreaMaxs ) );
NDebugOverlay::Box( vec3_origin, vecAreaMins, vecAreaMaxs, 255, 128, 128, 10, 10.0f );
Msg( "Total links = %d Area = %f\n", pArea->m_nTotalLinks, flArea );
}
return pArea;
}
// creates a batch of aliens at the mouse cursor
void asw_alien_batch_f( const CCommand& args )
{
MDLCACHE_CRITICAL_SECTION();
bool allowPrecache = CBaseEntity::IsPrecacheAllowed();
CBaseEntity::SetAllowPrecache( true );
// find spawn point
CASW_Player* pPlayer = ToASW_Player(UTIL_GetCommandClient());
if (!pPlayer)
return;
CASW_Marine *pMarine = pPlayer->GetMarine();
if (!pMarine)
return;
trace_t tr;
Vector forward;
AngleVectors( pMarine->EyeAngles(), &forward );
UTIL_TraceLine(pMarine->EyePosition(),
pMarine->EyePosition() + forward * 300.0f,MASK_SOLID,
pMarine, COLLISION_GROUP_NONE, &tr );
if ( tr.fraction != 0.0 )
{
// trace to the floor from this spot
Vector vecSrc = tr.endpos;
tr.endpos.z += 12;
UTIL_TraceLine( vecSrc + Vector(0, 0, 12),
vecSrc - Vector( 0, 0, 512 ) ,MASK_SOLID,
pMarine, COLLISION_GROUP_NONE, &tr );
ASWSpawnManager()->SpawnAlienBatch( "asw_parasite", 25, tr.endpos, vec3_angle );
}
CBaseEntity::SetAllowPrecache( allowPrecache );
}
static ConCommand asw_alien_batch("asw_alien_batch", asw_alien_batch_f, "Creates a batch of aliens at the cursor", FCVAR_GAMEDLL | FCVAR_CHEAT);
void asw_alien_horde_f( const CCommand& args )
{
if ( args.ArgC() < 2 )
{
Msg("supply horde size!\n");
return;
}
if ( !ASWSpawnManager()->AddHorde( atoi(args[1]) ) )
{
Msg("Failed to add horde\n");
}
}
static ConCommand asw_alien_horde("asw_alien_horde", asw_alien_horde_f, "Creates a horde of aliens somewhere nearby", FCVAR_GAMEDLL | FCVAR_CHEAT);
CON_COMMAND_F( asw_spawn_shieldbug, "Spawns a shieldbug somewhere randomly in the map", FCVAR_CHEAT )
{
ASWSpawnManager()->SpawnRandomShieldbug();
}
CON_COMMAND_F( asw_spawn_parasite_pack, "Spawns a group of parasites somewhere randomly in the map", FCVAR_CHEAT )
{
ASWSpawnManager()->SpawnRandomParasitePack( RandomInt( 3, 5 ) );
}