/////////////
//	CBDraw.h		:	v0032
//	Written by		:	Liu Gang
//	Compiler		:	Microsoft Visual C++ 4.0 & DirectX
//	Library			:	DDraw.Lib
//	Copyright (C)	:	1996 WayAhead Corporation 
//	v0010			:	Sep.26.1996
//	v0011			:	Nov.16.1996
//	v0020			:	Dec.12.1996, changed the display method to MMX
//	v0021			:	Jan.22.1997, changed drawing border method
//	v0030			:	Mar.7.1997, Great changes since optimze display core functions
//						Optimize display functions again, this time, compressed the file
//						to one third, and the speed is faster 2-3 frames/second.
//						Optimzed the border drawing functions too.
//	v0031			:	Mar.12.1997, add new MMX features in code
//	v0032			:	Mar.29.1997, change drawing method of special items
/////////////
// header file
// display core codes

#ifndef	__CBDRAW_H__
#define	__CBDRAW_H__

#define		DRAW_ERROR_ID	1100

//////////////////
// 裝入所有戰場上需要的位圖和緩沖區
// load user defined surfaces
// TRUE if succeeded
// return	:	TRUE if successful
BOOL DRAW_LoadMaps();

// 釋放所有在戰場上裝入的緩沖區和位圖
// release user defined surfaces
void DRAW_ReleaseMaps();
//////////////////

//////////////////
// 顯示單元、陰影、水紋的效果、漢字、更新縮略圖等
// 每秒鐘要運行幾十次
// draw maps in every program cycle
void DRAW_DrawMaps();

// 檢測是否移動屏幕
// test if should move screen, if so move it
// return value	:	TRUE if moved
int  DRAW_MoveScreen();

// 如果鼠標點擊縮略圖，或者游戲一開始時，使屏幕跳到相應位置
// if mouse hit minimap, should jump the screen to the point
// ptCenter		:	mouse hit point, in grid
// return value	:	TRUE if jumped
BOOL  DRAW_JumpScreen( POINT ptCenter );

// draw all the user defined maps to screen
void DRAW_UpdateScreen( BOOL bFront = TRUE );
//////////////////

//////////////////
// 能夠覆蓋某點的所有點的相對坐標
#define	DRAW_COVER_MAX	56
#define	DRAW_LOCATION_MAX 4

// 讀取遮擋數據
struct DRAW_COVER_STRUCT
{
	// stores the number of the last dimension in ptCover
	int   nCoveredMax[2][DRAW_LOCATION_MAX];
	int   nCoveringMax[2][DRAW_LOCATION_MAX];

	// stores points
	// First Dimension:		Even or Odd
	// Second Dimension:	Locatoin Max, always 4
	// Third Dimension:		max cover itmes
	// Covered 
	POINT ptCovered[2][DRAW_LOCATION_MAX][DRAW_COVER_MAX];
	// Covering
	POINT ptCovering[2][DRAW_LOCATION_MAX][DRAW_COVER_MAX];
};
extern struct DRAW_COVER_STRUCT DRAW_CoverLib;

// defined in CBFile.cpp
// 讀取遮擋數據
BOOL DRAW_ReadCoverFile( HWND hwnd, LPCTSTR filename, LPCTSTR path );
//////////////////

// for draw only
#define	DRAW_SCREEN_ADJUST	2

//////////////////
// defined in CBDrawM.cpp
//////////////////
// for copy screen
// copy back buffer to a file named "ScreenXX.bmp"
// to make screen shots, advertising
// true if succeeded
BOOL DRAW_CopyScreen();

// draw blinking water, change palette to perform it
void DRAW_FlipWater();
//////////////////

//////////////////
// draw other maps
// prcCut	:	剪切的矩形
// nFile	:	OTHER圖素的文件號
// nFrame	:	當前幀
// nZ,nX,nY :	格子坐標
extern void DRAW_OTHER_Draw( const RECT *prcCut, int nFile, int nFrame, int nZ, int nX, int nY );

// 當資源狀態改變時（被砍伐，收割后），要更新該區域
// nZ,nX,nY :	格子坐標
extern void DRAW_OTHER_UpdateResource( int nZ, int nX, int nY );
//////////////////
//////////////////
#endif