425 lines
20 KiB
C++
425 lines
20 KiB
C++
//============ Copyright (c) Valve Corporation, All rights reserved. ============
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//
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// Class & functions to parse and represent a VMF file.
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//
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//===============================================================================
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#ifndef SIMPLEMAPFILE_H
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#define SIMPLEMAPFILE_H
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#if defined( COMPILER_MSVC )
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#pragma once
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#endif
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#include "chunkfile.h"
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#include "stringpool.h"
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#include "vbspmathutil.h"
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class CSimpleMapFile;
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class GameData;
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DECLARE_LOGGING_CHANNEL( LOG_VBSP2 );
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//-----------------------------------------------------------------------------
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// Flags that modify a brush volume or brush side surface
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//-----------------------------------------------------------------------------
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typedef int MapBrushContentsFlags_t;
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//-----------------------------------------------------------------------------
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// Flags that modify a brush side surface
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//-----------------------------------------------------------------------------
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typedef short MapBrushSideSurfaceFlags_t;
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//-----------------------------------------------------------------------------
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// A single entity from a VMF file.
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//-----------------------------------------------------------------------------
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struct MapEntity_t
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{
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// World-space location of the object.
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Vector m_vOrigin;
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// Index & count of brushes contained within this entity. These are stored in the map's brush array.
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// Brushes in an entity have contiguous indices in the range: [m_nFirstBrushIndex, m_nFirstBrushIndex + m_nNumBrushes).
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int m_nFirstBrushIndex;
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int m_nNumBrushes;
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// Index & count of key-value pairs (entity properties) contained within this entity. These are stored in the map's key-value pair array.
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// Key-value pairs in an entity have contiguous indices in the range: [m_nFirstKVPairIndex, m_nFirstKVPairIndex + m_nNumKVPairs).
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int m_nFirstKVPairIndex;
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int m_nNumKVPairs;
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};
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//-----------------------------------------------------------------------------
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// A property of an entity from a VMF file.
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//-----------------------------------------------------------------------------
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struct MapEntityKeyValuePair_t
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{
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// These point into the string pool owned by the map object, so no memory management is necessary.
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const char *m_pKey;
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const char *m_pValue;
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// True if this key value pair came from the "connections" section of an entity,
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// false if it came from an ordinary entity key.
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bool m_bIsConnection;
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};
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//-----------------------------------------------------------------------------
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// A CSG brush (convex solid) from a VMF file.
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//-----------------------------------------------------------------------------
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struct MapBrush_t
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{
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// Contents of the brush, based on the properties of its sides.
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MapBrushContentsFlags_t m_ContentsFlags;
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// Index & count of brush sides. These are stored in the map's brush sides array.
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// Brush sides have contiguous indices in the range: [m_nFirstSideIndex, m_nFirstSideIndex + m_nNumSides).
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int m_nFirstSideIndex;
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int m_nNumSides;
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// AABB of the brush
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Vector m_vMinBounds, m_vMaxBounds;
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};
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static const int INVALID_DISPLACEMENT_INDEX = -1;
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//-----------------------------------------------------------------------------
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// A single side of a CSG brush from a VMF file.
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//-----------------------------------------------------------------------------
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struct MapBrushSide_t
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{
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// Contents of the brush side, based on the material properties.
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MapBrushContentsFlags_t m_ContentsFlags;
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// Surface flags of the brush side, based on the material properties.
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MapBrushSideSurfaceFlags_t m_SurfaceFlags;
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// The index of the plane coincident with this brush side. The index is in the map's plane hash.
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int m_nPlaneIndex;
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// The index of the texture info struct for this brush side, describing the material applied to this side.
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// The index is into the map's texture info array.
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int m_nTextureInfoIndex;
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// The polygonal face of this brush side.
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Polygon_t m_Polygon;
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// The index of the displacement associated with this side, or INVALID_DISPLACEMENT_INDEX if
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// this side is not a displacement surface.
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int m_nDisplacementIndex;
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};
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//-----------------------------------------------------------------------------
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// A displacement surface, specified on a particular CSG brush side.
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//-----------------------------------------------------------------------------
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class CMapDisplacement
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{
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public:
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CMapDisplacement();
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bool AreVerticesAllocated() const { return m_Vertices.Count() > 0 && m_nPower > 0; }
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// NOTE: If new fields are added to this class, you must update MoveFrom()!
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// Power-of-2 number of subdivisions.
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// MIN_MAP_DISP_POWER <= m_nPower <= MAX_MAP_DISP_POWER
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int m_nPower;
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// Map brush side corresponding to this displacement surface. The brush side is "orphaned"
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// in that no brushes will point to it (since the original brush is removed from the world).
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int m_nOriginalBrushSide;
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// SURF_* flags, defined in builddisp.h
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int m_nFlags;
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// Contents flags taken from the original brush.
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// The value is stored here, since the original brush gets removed from the world.
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MapBrushContentsFlags_t m_ContentsFlags;
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Vector m_vStartPosition;
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struct Vertex_t
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{
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float m_flAlpha;
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float m_flDistance;
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Vector m_vNormal;
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Vector m_vOffset;
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Vector4D m_vMultiBlend;
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Vector m_vMultiBlendColors[MAX_MULTIBLEND_CHANNELS];
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};
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CUtlVector< Vertex_t > m_Vertices;
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// DISPTRI_* flags, defined in bspfile.h (one per triangle).
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CUtlVector< unsigned short > m_TriangleTags;
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// Copies values and takes ownership of owned data from the other displacement object
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// (this is a destructive, but efficient, operation used to migrate a displacement
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// from one map object to another).
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// NOTE: If you add new fields to CMapDisplacement, you must update this function!
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void MoveFrom( CMapDisplacement *pOther );
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private:
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// Disallow value semantics
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CMapDisplacement( const CMapDisplacement &other );
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CMapDisplacement &operator=( const CMapDisplacement &other );
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};
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static const int MAX_TEXTURE_NAME_LENGTH = 128;
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//-----------------------------------------------------------------------------
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// Texture properties for a brush side, as loaded from a VMF file.
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//-----------------------------------------------------------------------------
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struct MapBrushTexture_t
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{
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Vector m_vUAxis, m_vVAxis;
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float m_flShift[2];
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float m_flTextureWorldUnitsPerTexel[2];
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float m_flLightmapWorldUnitsPerLuxel;
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char m_MaterialName[MAX_TEXTURE_NAME_LENGTH];
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MapBrushSideSurfaceFlags_t m_SurfaceFlags;
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};
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//-----------------------------------------------------------------------------
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// Sentinel texture info index for a side of a solid BSP node.
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//-----------------------------------------------------------------------------
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static const int NODE_TEXTURE_INFO_INDEX = -1;
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//-----------------------------------------------------------------------------
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// Planar mapping of texture data to a particular surface.
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//-----------------------------------------------------------------------------
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struct MapTextureInfo_t
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{
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// The U and V vectors (w-component contains the offset) that define
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// a homogeneous planar mapping from 3D (world) space to 2D (texture) space.
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float m_flTextureVectors[2][4];
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float m_flLightmapVectors[2][4];
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// Index into the map's texture data array of the structure which describes
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// the material being mapped to this surface.
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int m_nTextureDataIndex;
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MapBrushSideSurfaceFlags_t m_SurfaceFlags;
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};
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//-----------------------------------------------------------------------------
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// Basic material information for a surface.
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//-----------------------------------------------------------------------------
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struct MapTextureData_t
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{
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Vector m_vReflectivity;
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// Width and height of the base texture referenced by the material
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int m_nWidth, m_nHeight;
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// Name of the material (e.g. DEV/GRAYGRID) being mapped
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char m_MaterialName[MAX_TEXTURE_NAME_LENGTH];
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};
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//-----------------------------------------------------------------------------
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// Finds a key-value pair with the specified key in a given array of
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// key-value pairs, or NULL if none is found
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//-----------------------------------------------------------------------------
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const MapEntityKeyValuePair_t *FindPair( const char *pKeyName, const MapEntityKeyValuePair_t *pPairs, int nNumPairs );
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MapEntityKeyValuePair_t *FindPair( const char *pKeyName, MapEntityKeyValuePair_t *pPairs, int nNumPairs );
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//-----------------------------------------------------------------------------
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// Gets the value associated with the given pair or "" if the pair
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// or value string is NULL (safe to chain with FindPair)
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//-----------------------------------------------------------------------------
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const char *GetPairValue( const MapEntityKeyValuePair_t *pPair );
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//-----------------------------------------------------------------------------
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// A class which represents a VMF (map) file in memory
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// or value string is NULL (safe to chain with FindPair)
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//-----------------------------------------------------------------------------
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class CSimpleMapFile
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{
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public:
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//-----------------------------------------------------------------------------
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// Gets the minimum and maximum bound of all world brushes in this map file
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//-----------------------------------------------------------------------------
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Vector GetMinBounds() const { return m_vMinBounds; }
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Vector GetMaxBounds() const { return m_vMaxBounds; }
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int GetMapRevision() const { return m_nMapRevision; }
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const MapEntity_t *GetEntities() const { return &m_Entities[0]; }
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MapEntity_t *GetEntities() { return &m_Entities[0]; }
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int GetEntityCount() const { return m_Entities.Count(); }
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//-----------------------------------------------------------------------------
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// Gets the world entity, which is the 0th entity in the file
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//-----------------------------------------------------------------------------
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const MapEntity_t *GetWorldEntity() const { return GetEntities(); }
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MapEntity_t *GetWorldEntity() { return GetEntities(); }
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const MapBrush_t *GetBrushes() const { return &m_Brushes[0]; }
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MapBrush_t *GetBrushes() { return &m_Brushes[0]; }
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int GetBrushCount() const { return m_Brushes.Count(); }
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const MapBrushSide_t *GetBrushSides() const { return &m_BrushSides[0]; }
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MapBrushSide_t *GetBrushSides() { return &m_BrushSides[0]; }
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int GetBrushSideCount() const { return m_BrushSides.Count(); }
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const CMapDisplacement *GetDisplacements() const { return &m_Displacements[0]; }
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CMapDisplacement *GetDisplacements() { return &m_Displacements[0]; }
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int GetDisplacementCount() const { return m_Displacements.Count(); }
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const MapTextureInfo_t *GetTextureInfos() const { return &m_TextureInfos[0]; }
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MapTextureInfo_t *GetTextureInfos() { return &m_TextureInfos[0]; }
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int GetTextureInfoCount() const { return m_TextureInfos.Count(); }
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const MapTextureData_t *GetTextureData() const { return &m_TextureData[0]; }
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MapTextureData_t *GetTextureData() { return &m_TextureData[0]; }
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int GetTextureDataCount() const { return m_TextureData.Count(); }
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const MapEntityKeyValuePair_t *GetKeyValuePairs() const { return &m_KeyValuePairs[0]; }
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MapEntityKeyValuePair_t *GetKeyValuePairs() { return &m_KeyValuePairs[0]; }
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int GetKeyValuePairCount() const { return m_KeyValuePairs.Count(); }
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const CPlaneHash *GetPlaneHash() const { return &m_PlaneHash; }
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const char *GetFilename() const { return m_pFilename; }
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//-----------------------------------------------------------------------------
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// Adds a func_instance entity to the map file.
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//-----------------------------------------------------------------------------
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void AddFuncInstance( const char *pFilename, QAngle angles, Vector vOrigin, MapEntityKeyValuePair_t *pExtraKeyValues = NULL, int nExtraKeyValues = 0 );
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int FindEntity( const char *pClassName, const char *pKeyName, const char *pValue, int nStartingIndex = 0 );
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void RemoveEntity( int nEntityIndex );
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//-----------------------------------------------------------------------------
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// Flags passed to ResolveInstances() to control behavior.
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//-----------------------------------------------------------------------------
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enum ResolveInstanceFlags_t
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{
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NO_FLAGS = 0x0,
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CONVERT_STRUCTURAL_TO_DETAIL = 0x1, // convert all solids in world entities to func_detail
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};
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//-----------------------------------------------------------------------------
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// Callback invoked after loading each instance.
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// The callback is given the originally provided context value, the loaded
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// instance map, and the key-value pairs from the parent map's
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// func_instance entity chunk.
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//-----------------------------------------------------------------------------
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typedef void ( *PostLoadInstanceHandler_t )( void *pContext, CSimpleMapFile *pInstanceMapFile, MapEntityKeyValuePair_t *pFuncInstanceKeyValuePairs, int nNumKeyValuePairs );
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//-----------------------------------------------------------------------------
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// Recursively loads all contained func_instance entities and merges
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// them with the current map in breadth-first recursive order.
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//-----------------------------------------------------------------------------
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bool ResolveInstances( ResolveInstanceFlags_t instanceFlags = NO_FLAGS, PostLoadInstanceHandler_t pPostLoadInstanceHandler = NULL, void *pHandlerContext = NULL );
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//-----------------------------------------------------------------------------
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// Loads a VMF (map) file from disk and constructs a new CSimpleMapFile object.
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// The caller must delete the object when done.
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//-----------------------------------------------------------------------------
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static void LoadFromFile( IFileSystem *pFileSystem, const char *pVMFFilename, CSimpleMapFile **ppNewMapFile, ResolveInstanceFlags_t instanceFlags = NO_FLAGS );
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private:
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CSimpleMapFile( IFileSystem *pFileSystem, const char *pVMFFilename );
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MapEntity_t *AllocateNewEntity();
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MapBrush_t *AllocateNewBrush();
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MapBrushSide_t *AllocateNewBrushSide();
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CMapDisplacement *AllocateNewDisplacement();
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MapBrushTexture_t *AllocateNewBrushTexture();
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MapTextureData_t *AllocateNewTextureData();
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MapEntityKeyValuePair_t *AllocateNewKeyValuePair();
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// Some entity types are simply ignored
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void DeallocateLastEntity() { m_Entities.RemoveMultipleFromTail( 1 ); }
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// Some brushes are loaded and then discarded (e.g. brushes with displacement)
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void DeallocateLastBrush() { m_Brushes.RemoveMultipleFromTail( 1 ); }
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void ReportParseError( const char *pErrorString );
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void MakeBrushPolygons( MapBrush_t *pBrush );
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void MoveEntityBrushesToWorld( int nEntityIndex );
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int GetTextureInfoForBrushTexture( MapBrushTexture_t *pBrushTexture, const Vector &vRelativeOrigin );
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int FindOrCreateTextureData( const char *pTextureName );
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int FindOrCreateTextureInfo( const MapTextureInfo_t &textureInfo );
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MapBrushContentsFlags_t ComputeBrushContents( MapBrush_t *b );
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// Functions used to merge instance data (recursively) with the primary map
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void MergeInstance( int nEntityIndex, CSimpleMapFile *pInstanceMap, GameData *pGameData );
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void PreLoadInstances( GameData *pGD );
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void MergeBrushes( int nEntityIndex, const CSimpleMapFile *pInstanceMap, const Vector &vOrigin, const QAngle &orientation, const matrix3x4_t &transform );
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void MergeBrushSides( int nEntityIndex, CSimpleMapFile *pInstanceMap, const Vector &vOrigin, const QAngle &orientation, const matrix3x4_t &transform );
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void MergeEntities( int nEntityIndex, const CSimpleMapFile *pInstanceMap, const Vector &vOrigin, const QAngle &orientation, const matrix3x4_t &transform, GameData *pGameData );
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void FixupInstanceKeyValuePair( MapEntityKeyValuePair_t *pNewKeyValuePair, const char *pOriginalValue, const MapEntityKeyValuePair_t *pInstancePairs, int nNumPairs );
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// The following static functions are passed as callbacks to the chunk file reader
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// when certain chunks and key blocks are encountered in the VMF file.
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static ChunkFileResult_t EntityChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t SolidChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t SideChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DispInfoChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t ConnectionsChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t EntityKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t SolidKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t SideKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t DisplacementKeyHandler( const char *pKey, const char *pValue, void *pData );
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// These are shim functions which simply call into their corresponding displacement key handlers
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static ChunkFileResult_t DisplacementNormalsChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementDistancesChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementOffsetsChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementAlphasChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementTriangleTagsChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementMultiBlendChunkHandler( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementMultiBlendColor0( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementMultiBlendColor1( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementMultiBlendColor2( CChunkFile *pFile, void *pData );
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static ChunkFileResult_t DisplacementMultiBlendColor3( CChunkFile *pFile, void *pData );
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// These read the actual key data associated with each displacement attribute
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static ChunkFileResult_t DisplacementNormalsKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t DisplacementDistancesKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t DisplacementOffsetsKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t DisplacementAlphasKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t DisplacementTriangleTagsKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t DisplacementMultiBlendKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t DisplacementMultiBlendColorKeyHandler( const char *pKey, const char *pValue, void *pData );
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static ChunkFileResult_t ConnectionsKeyHandler( const char *pKey, const char *pValue, void *pData );
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struct MaterialInfo_t
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{
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char m_Name[MAX_TEXTURE_NAME_LENGTH];
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MapBrushContentsFlags_t m_ContentsFlags;
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MapBrushSideSurfaceFlags_t m_SurfaceFlags;
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};
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MaterialInfo_t* FindMaterialInfo( const char *pName );
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IFileSystem *m_pFileSystem;
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// This is needed so instances can be resolved. If we're loading map files from memory buffers
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// or other non-file sources, we'll need an "include interface" (like D3DX/HLSL's include resolution system).
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const char *m_pFilename;
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CPlaneHash m_PlaneHash;
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CUtlVector< MapEntity_t > m_Entities;
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CUtlVector< MapBrush_t > m_Brushes;
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CUtlVector< CMapDisplacement > m_Displacements;
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// These two arrays (m_BrushSides & m_BrushTextures) should always be the same size as there is a 1:1 correspondence.
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CUtlVector< MapBrushSide_t > m_BrushSides;
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CUtlVector< MapBrushTexture_t > m_BrushTextures;
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CUtlVector< MapTextureInfo_t > m_TextureInfos;
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CUtlVector< MapTextureData_t > m_TextureData;
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// Number of instances loaded (recursively).
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// This value is only used on the root-level map. It is used to generate unique names for instanced entities.
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int m_nInstanceCount;
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// This value is only used on instance maps to control loading and processing.
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ResolveInstanceFlags_t m_InstanceFlags;
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// Used to store entity property data
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CUtlVector< MapEntityKeyValuePair_t > m_KeyValuePairs;
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CStringPool m_KeyValueStringPool;
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Vector m_vMinBounds, m_vMaxBounds;
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int m_nMapRevision;
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int m_nHighestID;
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// Used to cache results of FindMaterialInfo, which gets information about materials applied to brush sides.
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CUtlVector< MaterialInfo_t > m_MaterialInfos;
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};
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#endif // SIMPLEMAPFILE_H
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