游戏地图卷动和2D的一些函数

//////////////////////// 32位色彩下全屏和窗口的2D 数学模型图形引擎的demo ///////////////////////// ////这个程序应用的是24位图在32位全频模式下的图像 场景直接切换///////////////////////////////////// #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <windowsx.h> #include <mmsystem.h> #include <iostream.h> #include <conio.h> #include <stdlib.h> #include <malloc.h> #include <memory.h> #include <string.h> #include <stdarg.h> #include <stdio.h> #include <math.h> #include <io.h> #include <fcntl.h> #include "ddraw.h" #define WINDOW_CLASS_NAME "WINCLASS1" //全局变量宏 #define SCREEN_WIDTH 640 #define SCREEN_HEIGHT 480 #define SCREEN_BIT 32 #define BITMAPID 0x4D42 #define WORLD_WIDTH SCREEN_WIDTH*2 #define WORLD_HEIGHT SCREEN_HEIGHT const double PI = 3.1415926535; //const说明在程序中不能改变这个变量，必须赋初值 const int min_clip_y=0; const int max_clip_y=SCREEN_HEIGHT-1; const int min_clip_x=0; const int max_clip_x=SCREEN_WIDTH-1; #define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0) //宏操作 #define KEYUP(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1) #define _RGB16BIT555(r,g,b) ((b & 31) + ((g & 31) << 5) + ((r & 31) << 10)) #define _RGB16BIT565(r,g,b) ((b & 31) + ((g & 63) << 5) + ((r & 31) << 11)) #define _RGB32BIT(a,r,g,b) ((b) + ((g) << 8) + ((r) << 16) + ((a) << 24)) #define INIT_STRUCT(mstruct) { memset(&mstruct,0,sizeof(mstruct)); mstruct.dwSize=sizeof(mstruct); } typedef unsigned char UCHAR; //8bit //自定义数据类型 typedef unsigned char UBYTE; //8bit typedef unsigned short USHORT; //16bit typedef unsigned short WORD; //16bit typedef unsigned int UINT; //32bit typedef struct tag_Vertex2DI //结构体 { int x; int y; }VERTEX2DI,*PVERTEX2DI; typedef struct tag_Vertex2DF { float x; float y; }VERTEX2DF, *PVERTEX2DF; typedef struct tag_Polygon2D //这个结构的限制就是每个点按照逆时针顺序进行存储，不然画的时候会乱掉，连线顺序会走样的 { int state; //当前这个凸多边形的状态 int num_vertexs; //有多少个点组成 int x0,y0; //凸多边形的中心，自身坐标原点,图形在结构体中保存属于自己的坐标系的好处就是，移动的时候只要改变中心点即可 int xv,yv; //移动速度 DWORD color; //颜色 VERTEX2DF* vlist; //这些点的用链表结构存起来,这里每个点的坐标是图形坐标系，不是世界坐标系，即存的是相对坐标 }POLYGON2D,*PPOLYGON2D; typedef struct tag_bitmap { BITMAPFILEHEADER fileheader; BITMAPINFOHEADER infoheader; PALETTEENTRY palette[256]; BYTE* Buffer; }BITMAP_FILE,*PBITMAP_FILE; typedef struct tag_object { POLYGON2D* poly; int cur_map; }OBJECT,*POBJECT; typedef struct tag_map { LPDIRECTDRAWSURFACE7 lpdds; int width; int height; int x; //左上角的坐标 int y; }OBJ_MAP,*POBJ_MAP; LPDIRECTDRAW7 lpdd = NULL ; //全局变量 LPDIRECTDRAWSURFACE7 lpddsprimary = NULL ; LPDIRECTDRAWSURFACE7 lpddsback = NULL ; LPDIRECTDRAWSURFACE7 lpddsbackground[2] ; LPDIRECTDRAWCLIPPER lpddclipper = NULL ; DDSURFACEDESC2 ddsd ; RECT SCREEN_RECT[256] ; LPRGNDATA region_data ; DDBLTFX ddbltfx ; HWND WND_APP = NULL; HINSTANCE hinstance_app = NULL; int Unit_Per_Line = NULL; POLYGON2D m_pol; OBJECT m_obj; OBJ_MAP m_map[2]; char buf[80]; //用来屏幕输出，是GDI的，用来输出一些屏幕或者提示信息 int per_line = 0 ; //是VRAM中每行的BYTE数量 DWORD start_time = 0 ; float cos_look[360]; //用来存放360个角度的cos和sin函数，打表查找，因为在实时系统中调用cpu的系统进行计算3角函数实在是太愚蠢的方法了 float sin_look[360]; int world_x; //世界当前坐标点，即视点位置 int world_y; int DDraw_Fill_Surface(LPDIRECTDRAWSURFACE7 lpdds, DWORD color); int Draw_Line(int x0, int y0, int x1, int y1, DWORD color, DWORD *vb_start, int lpitch); int Clip_Line(int &x1,int &y1,int &x2, int &y2); int Draw_Clip_Line(int x0,int y0, int x1, int y1,DWORD color,DWORD *dest_buffer, int lpitch); int Draw_Polygon2D(PPOLYGON2D, DWORD *vbuffer, int lpitch); int Translate_Polygon2D(PPOLYGON2D poly, int dx, int dy); int Rotate_Polygon2D(PPOLYGON2D poly, int theta); int Scale_Polygon2D(PPOLYGON2D poly, float sx, float sy); int Draw_Text_GDI(char *text, int x,int y,DWORD color, LPDIRECTDRAWSURFACE7 lpdds); int Init_Cos_Sin_Look_chart(); LPDIRECTDRAWSURFACE7 DDraw_Create_Surface(int width, int height, int mem_flags, DWORD color_key); int Flip_Bitmap(UCHAR *image, int bytes_per_line, int height); int Scan_Image_Bitmap( PBITMAP_FILE bitmap, LPDIRECTDRAWSURFACE7 lpdds ); int Load_Bitmap_File( PBITMAP_FILE bitmap, char *filename); int DDraw_Draw_Surface(LPDIRECTDRAWSURFACE7 source,int x,int y,int width,int height,LPDIRECTDRAWSURFACE7 dest,int transparent); LPDIRECTDRAWCLIPPER DDraw_Attach_Clipper(LPDIRECTDRAWSURFACE7 lpdds,int num_rects,LPRECT clip_list); LPDIRECTDRAWCLIPPER DDraw_Attach_Clipper(LPDIRECTDRAWSURFACE7 lpdds, int num_rects, LPRECT clip_list) { int i; if( FAILED(lpdd->CreateClipper(NULL,&lpddclipper,NULL)) ) return 0; region_data = (LPRGNDATA)malloc(sizeof(RGNDATAHEADER)+sizeof(RECT)*num_rects); //指针要用的时候就要 分配内存的，不然这个结构根本没内存，无法赋值 //另外就是 这个 RGNDATA一定要全局变量用指针的形式来声明，因为它的内存空间 需要动态分配，根据NUM_RECTS的不同而分配不同大小的内存.... memcpy(region_data->Buffer,clip_list,sizeof(RECT)*num_rects); region_data->rdh.dwSize = sizeof(RGNDATAHEADER); region_data->rdh.iType = RDH_RECTANGLES; region_data->rdh.nCount = num_rects; region_data->rdh.nRgnSize = num_rects*sizeof(RECT); region_data->rdh.rcBound.left = 40000 ; region_data->rdh.rcBound.top = 40000 ; region_data->rdh.rcBound.bottom =-40000 ; region_data->rdh.rcBound.right =-40000 ; for(i=0;i<num_rects;i++) { if( clip_list[i].left < region_data->rdh.rcBound.left ) region_data->rdh.rcBound.left=clip_list[i].left; if( clip_list[i].top < region_data->rdh.rcBound.top ) region_data->rdh.rcBound.top=clip_list[i].top; if( clip_list[i].right > region_data->rdh.rcBound.right ) region_data->rdh.rcBound.right=clip_list[i].right; if( clip_list[i].bottom > region_data->rdh.rcBound.bottom ) region_data->rdh.rcBound.bottom=clip_list[i].bottom; } if( FAILED(lpddclipper->SetClipList(region_data,NULL)) ) return 0; if( FAILED(lpdds->SetClipper(lpddclipper)) ) { free(region_data); return 0; } free(region_data); return lpddclipper; } int Unload_Bitmap_File(PBITMAP_FILE bitmap) { if (bitmap->Buffer) { free(bitmap->Buffer); bitmap->Buffer = NULL; } return(1); } int DDraw_Draw_Surface(LPDIRECTDRAWSURFACE7 source, int x, int y, int width, int height, LPDIRECTDRAWSURFACE7 dest, int transparent = 1) { RECT dest_rect, source_rect; dest_rect.left = x; dest_rect.top = y; dest_rect.right = x+width; //这里不要减一了 比较经典的 dest_rect.bottom = y+height; source_rect.left = 0; // 不同用1 不然寻址，就太慢了，一定从0开始快很多 source_rect.top = 0; source_rect.right = width; source_rect.bottom = height; if(transparent) { if( FAILED(dest->Blt(&dest_rect,source,&source_rect,DDBLT_WAIT|DDBLT_KEYSRC ,NULL)) ) return 0; } else { if( FAILED(dest->Blt(&dest_rect,source,&source_rect,DDBLT_WAIT,NULL)) ) return 0; } return 1; } int Scan_Image_Bitmap( PBITMAP_FILE bitmap, LPDIRECTDRAWSURFACE7 lpdds ) { int i; INIT_STRUCT(ddsd); if( FAILED(lpdds->Lock(NULL,&ddsd,DDLOCK_WAIT | DDLOCK_SURFACEMEMORYPTR,NULL)) ) return 0; int height=ddsd.dwHeight; int width=ddsd.dwWidth; DWORD* dst_ptr ;