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// BMPLoad.h: interface for the CBMPLoad class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#if !defined(AFX_BMPLOAD_H__A7A2B09D_8283_4DA1_8A5C_C023D4DDB6D0__INCLUDED_) 
#define AFX_BMPLOAD_H__A7A2B09D_8283_4DA1_8A5C_C023D4DDB6D0__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
#define INDEX_TEXTURE_NAME(x, z) ((x) + ((z)*8)) 
#ifndef PI 
#define PI 3.1415926535 
#endif PI 
 
#ifndef f4  
#define f4(a, b, c, d) ((a) + (b) + (c) + (d)) / 4 
#endif 
#define IX(x, z) (((x)&255) + (((z)&255) << 8)) // 将2D坐标转换为1D坐标 
#define M_SIZE 256  
 
typedef unsigned char BYTE; 
typedef short int SHORT; 
typedef long int LONG; 
typedef unsigned short int WORD; 
typedef unsigned long int DWORD; 
 
typedef struct TEXTURE{ 
	int w, h; 
	unsigned char *data; 
} TEXTURE; 
 
typedef struct _Win3xBitmapHeader 
{ 
	WORD	ImageFileType; 
	DWORD FileSize; 
	WORD	Reserved1; 
	WORD	Reserved2; 
	DWORD	ImageDataOffset; 
 
} WIN3XHEAD; 
 
typedef struct _Win3xBitmapInfoHeader 
{ 
	DWORD	HeaderSize; 
	LONG ImageWidth; 
	LONG ImageHeight; 
	WORD	NumberOfImagePlanes; 
	WORD	BitsPerPixel; 
	DWORD	CompressionMethod; 
	DWORD SizeOfBitmap; 
	LONG HorzResolution; 
	LONG VertResolution; 
	DWORD NumColorsUsed; 
	DWORD NumSignificantColors; 
 
} WIN3XINFOHEAD; 
 
typedef struct _Win3xPixelData 
{ 
	BYTE r; 
	BYTE g; 
	BYTE b; 
} PAL; 
 
class CBMPLoad   
{ 
public: 
	CBMPLoad(); 
	virtual ~CBMPLoad(); 
 
	TEXTURE *load_bitmap(char *);  
	void destroy_bmp(TEXTURE *); 
	void texture_terrain(TEXTURE *t, int *hf); 
	 
	int IX_MAP(int x, int z); 
	float texture_factor(int h1, int h2); 
	int limit255(int a); 
	TEXTURE *new_bitmap(int x, int y); 
	void SET_COLOR(TEXTURE *tex, int x, int y, BYTE r, BYTE g, BYTE b); 
	void GET_COLOR(TEXTURE *tex, int x, int y, BYTE *r, BYTE *g, BYTE *b); 
 
 
}; 
 
 
#endif // !defined(AFX_BMPLOAD_H__A7A2B09D_8283_4DA1_8A5C_C023D4DDB6D0__INCLUDED_)