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// Prefab.h
/*
Declares the cPrefab class, representing a cPiece descendant for the cPieceGenerator that
uses a prefabricate in a cBlockArea for drawing itself.
The class can be constructed from data that is stored directly in the executable, in a sPrefabDef structure
declared in this file as well; the Gallery server exports areas in this format.
*/
#pragma once
#include "PieceGenerator.h"
#include "../BlockArea.h"
class cPrefab :
public cPiece
{
public:
struct sDef
{
int m_SizeX;
int m_SizeY;
int m_SizeZ;
const char * m_CharMap;
const char * m_Image;
const char * m_Connectors;
int m_AllowedRotations;
cBlockArea::eMergeStrategy m_MergeStrategy;
};
cPrefab(const sDef & a_Def);
/** Draws the prefab into the specified chunk, according to the placement stored in the PlacedPiece. */
void Draw(cChunkDesc & a_Dest, const cPlacedPiece * a_Placement) const;
/** Returns true if the prefab has any connector of the specified type. */
bool HasConnectorType(int a_ConnectorType) const;
protected:
/** Maps letters in the sDef::m_Image onto a number, BlockType * 16 | BlockMeta */
typedef int CharMap[256];
/** The cBlockArea that contains the block definitions for the prefab */
cBlockArea m_BlockArea;
/** The size of the prefab */
Vector3i m_Size;
/** The hitbox of the prefab. In first version is the same as the m_BlockArea dimensions */
cCuboid m_HitBox;
/** The connectors through which the piece connects to other pieces */
cConnectors m_Connectors;
/** Bitmask, bit N set -> N rotations CCW supported */
int m_AllowedRotations;
/** The merge strategy to use when drawing the prefab into a block area */
cBlockArea::eMergeStrategy m_MergeStrategy;
// cPiece overrides:
virtual cConnectors GetConnectors(void) const override;
virtual Vector3i GetSize(void) const override;
virtual cCuboid GetHitBox(void) const override;
virtual bool CanRotateCCW(int a_NumRotations) const override;
/** Parses the CharMap in the definition into a CharMap binary data used for translating the definition into BlockArea. */
void ParseCharMap(CharMap & a_CharMapOut, const char * a_CharMapDef);
/** Parses the Image in the definition into m_BlockArea's block types and metas, using the specified CharMap. */
void ParseBlockImage(const CharMap & a_CharMap, const char * a_BlockImage);
/** Parses the connectors definition text into m_Connectors member. */
void ParseConnectors(const char * a_ConnectorsDef);
};
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