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https://github.com/alliedmodders/hl2sdk.git
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First version of the SOurce SDK 2013
This commit is contained in:
Joe Ludwig
345
game/shared/decals.cpp
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345
game/shared/decals.cpp
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================//
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#include "cbase.h"
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#include "decals.h"
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#include "igamesystem.h"
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#include "utlsymbol.h"
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#include "utldict.h"
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#include "KeyValues.h"
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#include "filesystem.h"
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#ifdef CLIENT_DLL
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#include "iefx.h"
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#endif
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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#define DECAL_LIST_FILE "scripts/decals_subrect.txt"
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//#define DECAL_LIST_FILE "scripts/decals.txt"
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#define TRANSLATION_DATA_SECTION "TranslationData"
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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class CDecalEmitterSystem : public IDecalEmitterSystem, public CAutoGameSystem
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{
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public:
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CDecalEmitterSystem( char const *name ) : CAutoGameSystem( name )
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{
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}
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virtual bool Init();
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virtual void Shutdown();
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virtual void LevelInitPreEntity();
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// Public interface
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virtual int GetDecalIndexForName( char const *decalname );
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virtual const char *GetDecalNameForIndex( int nIndex );
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virtual char const *TranslateDecalForGameMaterial( char const *decalName, unsigned char gamematerial );
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private:
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char const *ImpactDecalForGameMaterial( int gamematerial );
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void LoadDecalsFromScript( char const *filename );
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void Clear();
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struct DecalListEntry
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{
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DecalListEntry()
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{
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name = UTL_INVAL_SYMBOL;
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precache_index = -1;
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weight = 1.0f;
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}
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CUtlSymbol name;
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int precache_index;
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float weight;
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};
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struct DecalEntry
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{
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DecalEntry()
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{
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}
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DecalEntry( const DecalEntry& src )
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{
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int c = src.indices.Count();
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for ( int i = 0; i < c; i++ )
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{
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indices.AddToTail( src.indices[ i ] );
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}
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}
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DecalEntry& operator = ( const DecalEntry& src )
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{
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if ( this == &src )
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return *this;
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int c = src.indices.Count();
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for ( int i = 0; i < c; i++ )
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{
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indices.AddToTail( src.indices[ i ] );
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}
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return *this;
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}
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CUtlVector< int > indices;
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};
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CUtlVector< DecalListEntry > m_AllDecals;
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CUtlDict< DecalEntry, int > m_Decals;
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CUtlSymbolTable m_DecalFileNames;
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CUtlDict< int, int > m_GameMaterialTranslation;
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};
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static CDecalEmitterSystem g_DecalSystem( "CDecalEmitterSystem" );
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IDecalEmitterSystem *decalsystem = &g_DecalSystem;
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *decalname -
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// Output : int
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//-----------------------------------------------------------------------------
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int CDecalEmitterSystem::GetDecalIndexForName( char const *decalname )
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{
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if ( !decalname || !decalname[ 0 ] )
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return -1;
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int idx = m_Decals.Find( decalname );
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if ( idx == m_Decals.InvalidIndex() )
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return -1;
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DecalEntry *e = &m_Decals[ idx ];
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Assert( e );
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int count = e->indices.Count();
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if ( count <= 0 )
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return -1;
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float totalweight = 0.0f;
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int slot = 0;
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for ( int i = 0; i < count; i++ )
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{
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int idx = e->indices[ i ];
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DecalListEntry *item = &m_AllDecals[ idx ];
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Assert( item );
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if ( !totalweight )
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{
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slot = idx;
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}
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// Always assume very first slot will match
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totalweight += item->weight;
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if ( !totalweight || random->RandomFloat(0,totalweight) < item->weight )
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{
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slot = idx;
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}
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}
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return m_AllDecals[ slot ].precache_index;
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}
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const char *CDecalEmitterSystem::GetDecalNameForIndex( int nIndex )
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{
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for ( int nDecal = 0; nDecal < m_AllDecals.Count(); ++nDecal )
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{
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if ( m_AllDecals[ nDecal ].precache_index == nIndex )
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{
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return m_DecalFileNames.String( m_AllDecals[ nDecal ].name );
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}
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}
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return "";
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Output : Returns true on success, false on failure.
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//-----------------------------------------------------------------------------
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bool CDecalEmitterSystem::Init()
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{
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LoadDecalsFromScript( DECAL_LIST_FILE );
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return true;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CDecalEmitterSystem::LevelInitPreEntity()
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{
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// Precache all entries
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int c = m_AllDecals.Count();
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for ( int i = 0 ; i < c; i++ )
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{
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DecalListEntry& e = m_AllDecals[ i ];
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#if defined( CLIENT_DLL )
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e.precache_index = effects->Draw_DecalIndexFromName( (char *)m_DecalFileNames.String( e.name ) );
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#else
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e.precache_index = engine->PrecacheDecal( m_DecalFileNames.String( e.name ) );
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#endif
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *filename -
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//-----------------------------------------------------------------------------
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void CDecalEmitterSystem::LoadDecalsFromScript( char const *filename )
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{
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KeyValues *kv = new KeyValues( filename );
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Assert( kv );
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if ( kv )
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{
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KeyValues *translation = NULL;
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#ifndef _XBOX
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if ( kv->LoadFromFile( filesystem, filename ) )
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#else
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if ( kv->LoadFromFile( filesystem, filename, "GAME" ) )
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#endif
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{
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KeyValues *p = kv;
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while ( p )
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{
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if ( p->GetFirstSubKey() )
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{
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char const *keyname = p->GetName();
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if ( !Q_stricmp( keyname, TRANSLATION_DATA_SECTION ) )
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{
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translation = p;
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}
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else
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{
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DecalEntry entry;
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for ( KeyValues *sub = p->GetFirstSubKey(); sub != NULL; sub = sub->GetNextKey() )
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{
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MEM_ALLOC_CREDIT();
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DecalListEntry decal;
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decal.precache_index = -1;
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decal.name = m_DecalFileNames.AddString( sub->GetName() );
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decal.weight = sub->GetFloat();
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// Add to global list
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int idx = m_AllDecals.AddToTail( decal );
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// Add index only to local list
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entry.indices.AddToTail( idx );
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}
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// Add entry to main dictionary
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m_Decals.Insert( keyname, entry );
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}
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}
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p = p->GetNextKey();
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}
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}
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else
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{
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Msg( "CDecalEmitterSystem::LoadDecalsFromScript: Unable to load '%s'\n", filename );
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}
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if ( !translation )
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{
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Msg( "CDecalEmitterSystem::LoadDecalsFromScript: Script '%s' missing section '%s'\n",
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filename,
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TRANSLATION_DATA_SECTION );
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}
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else
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{
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// Now parse game material to entry translation table
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for ( KeyValues *sub = translation->GetFirstSubKey(); sub != NULL; sub = sub->GetNextKey() )
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{
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// Don't add NULL string to list
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if ( !Q_stricmp( sub->GetString(), "" ) )
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continue;
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int idx = m_Decals.Find( sub->GetString() );
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if ( idx != m_Decals.InvalidIndex() )
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{
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m_GameMaterialTranslation.Insert( sub->GetName(), idx );
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}
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else
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{
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Msg( "CDecalEmitterSystem::LoadDecalsFromScript: Translation for game material type '%s' references unknown decal '%s'\n",
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sub->GetName(), sub->GetString() );
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}
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}
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}
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kv->deleteThis();
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : gamematerial -
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// Output : char const
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//-----------------------------------------------------------------------------
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char const *CDecalEmitterSystem::ImpactDecalForGameMaterial( int gamematerial )
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{
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char gm[ 2 ];
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gm[0] = (char)gamematerial;
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gm[1] = 0;
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int idx = m_GameMaterialTranslation.Find( gm );
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if ( idx == m_GameMaterialTranslation.InvalidIndex() )
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return NULL;
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return m_Decals.GetElementName( m_GameMaterialTranslation.Element(idx) );
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CDecalEmitterSystem::Shutdown()
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{
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Clear();
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CDecalEmitterSystem::Clear()
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{
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m_DecalFileNames.RemoveAll();
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m_Decals.Purge();
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m_AllDecals.Purge();
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m_GameMaterialTranslation.Purge();
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *decalName -
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// gamematerial -
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// Output : char const
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//-----------------------------------------------------------------------------
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char const *CDecalEmitterSystem::TranslateDecalForGameMaterial( char const *decalName, unsigned char gamematerial )
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{
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if ( gamematerial == CHAR_TEX_CONCRETE )
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return decalName;
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if ( !Q_stricmp( decalName, "Impact.Concrete" ) )
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{
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if ( gamematerial == '-' )
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return "";
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char const *d = ImpactDecalForGameMaterial( gamematerial );
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if ( d )
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{
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return d;
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}
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}
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return decalName;
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}
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