C++编好的一个俄罗斯方块游戏。生成了EXE文件，有源代码。怎么修改界面背景。就是游戏中的背景图片。

这个程序是从网上找的，是我们要交的作业，不知道怎么改背景图片，求高手帮忙

具体问题具体分析。可以先看看背景是不是在资源里存在，如果存在那直接替换估计就OK了。如果是代码中写的，那就修改代码了。

#pragma once #include "afxwin.h" #include "resource.h" const int block_line = 20; const int block_row = 10; class cblock { public: cblock(void); ~cblock(void); private: int m_blockshape; int m_nextblockshape; int m_blockstate; int m_blocklevel; int m_blockcurdelline; bool m_blockrunning; point m_blockpos[4]; point m_nextblockpos[4]; int m_blockmap[block_line][block_row]; public: void blockinit( void ); private: cbitmap m_bmpblock[7]; public: void createnewblock(void); void makenewblock(int shape, point pt[], int xpos); //cdc memdc; void drawblock(cdc* pdc); void blockdropdown(cdc* pdc); void hideblock(cdc* pdc); private: cbitmap m_bmpbkgnd; public: void drawnextblock( cdc* pdc ); void blockleft(cdc* pdc); void blockright(cdc* pdc); void blockfastdown(cdc* pdc); void changestate(cdc* pdc); void deleteline(cdc* pdc, int linenum, bool start); bool blockgameover(void); void blockscore(int del, cdc* pdc); bool blocklevelup(void); int blockspeed(void); }; #include "stdafx.h" #include "block.h" cblock::cblock(void) { srand( (unsigned)time(null) ); m_blockshape = 0; m_nextblockshape = rand()%7; m_blockstate = 0; m_blocklevel = 1; m_blockcurdelline = 0; m_blockrunning = false; memset(m_blockmap, 0, sizeof(m_blockmap) ); } cblock::~cblock(void) { } void cblock::blockinit( void ) { for( int i=0; i<7; i++) { m_bmpblock[i].loadbitmapw( idb_blockbar+i ); } m_bmpbkgnd.loadbitmapw( idb_bmpback ); } void cblock::createnewblock(void) { m_blockshape = m_nextblockshape; m_nextblockshape = rand()%7; m_blockstate = 0; makenewblock( m_blockshape, m_blockpos, 4 ); } void cblock::makenewblock(int shape, point pt[], int xpos) { switch(shape) { case 0: for(int i=0; i<4; i++) { pt[i].x=i+xpos; pt[i].y=0; } break; case 1: pt[0].x = 1+xpos; pt[0].y = 0; for(int i=1; i<4; i++) { pt[i].x = i-1+xpos; pt[i].y = 1; } break; case 2: pt[0].x = 0+xpos; pt[0].y = 0; pt[1].x = 1+xpos; pt[1].y = 0; pt[2].x = 1+xpos; pt[2].y = 1; pt[3].x = 2+xpos; pt[3].y = 1; break; case 3: pt[0].x = 0+xpos; pt[0].y = 1; pt[1].x = 1+xpos; pt[1].y = 1; pt[2].x = 1+xpos; pt[2].y = 0; pt[3].x = 2+xpos; pt[3].y = 0; break; case 4: pt[0].x = 0+xpos; pt[0].y = 0; for(int i=1; i<4; i++) { pt[i].x = i-1+xpos; pt[i].y = 1; } break; case 5: pt[0].x = 2+xpos; pt[0].y = 0; for(int i=1; i<4; i++) { pt[i].x = i-1+xpos; pt[i].y = 1; } break; case 6: for(int i=0; i<2; i++) { pt[i].x = i+xpos; pt[i].y = 0; pt[i+2].x = i+xpos; pt[i+2].y = 1; } break; default: break; } } void cblock::drawblock(cdc* pdc) { //blockinit(); //makenewblock( m_blockshape, m_blockpos, 4 ); cdc memdc; memdc.createcompatibledc(pdc); memdc.selectobject( &m_bmpblock[m_blockshape] ) ; int x = block_x; int y = block_y; for( int i = 0; i<4; i++ ) { x = block_x + m_blockpos[i].x*block_width; y = block_y + m_blockpos[i].y*block_height; pdc->bitblt( x, y, 20, 20, &memdc, 0, 0, srccopy ); } } void cblock::blockdropdown( cdc* pdc ) { int i,j; bool babledrop = true; for( i=0; i<4; i++ ) { if( 19 == m_blockpos[i].y || 0 != m_blockmap[m_blockpos[i].y+1][m_blockpos[i].x] ) { babledrop = false; break; } } if( true == babledrop ) { hideblock( pdc ); for( i=0; i<4; i++ ) { m_blockpos[i].y++; } drawblock( pdc ); } else { for( i=0; i<4; i++ ) { m_blockmap[m_blockpos[i].y][m_blockpos[i].x] = m_blockshape+1; } for( i=0; i<20; i++ ) { for( j=0; j<10; j++ ) { if( 0 == m_blockmap[i][j] ) { break; } } if( 10 == j ) { deleteline( pdc, i, false ); m_blockcurdelline++; blockscore(1, pdc ); } } createnewblock(); makenewblock( m_blockshape, m_blockpos, 4 ); drawblock( pdc ); drawnextblock( pdc ); } } void cblock::hideblock(cdc* pdc) { cdc bkdc; bkdc.createcompatibledc(pdc); bkdc.selectobject(m_bmpbkgnd); int x, y; for( int i=0; i<4; i++ ) { x = block_x+block_width*m_blockpos[i].x; y = block_y+block_height*m_blockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, x, y, srccopy ); } bkdc.deletedc(); } void cblock::drawnextblock( cdc* pdc ) { cdc bkdc; bkdc.createcompatibledc( pdc ); bkdc.selectobject( m_bmpbkgnd ); int x ,y; pdc->bitblt( nextblock_x, nextblock_y, nextblock_width, nextblock_height, &bkdc, nextblock_x, nextblock_y, srccopy ); makenewblock( m_nextblockshape, m_nextblockpos, 0 ); bkdc.selectobject( m_bmpblock[m_nextblockshape] ); if( 0 == m_nextblockshape ) { for( int i=0; i<4; i++ ) { x = nextblock_x + 15 + block_width*m_nextblockpos[i].x; y = nextblock_y + 47 + block_height*m_nextblockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, 0, 0, srccopy ); } } else if( 6 == m_nextblockshape ) { for( int i=0; i<4; i++ ) { x = nextblock_x + 35 + block_width*m_nextblockpos[i].x; y = nextblock_y + 38 + block_height*m_nextblockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, 0, 0, srccopy ); } } else { for( int i=0; i<4; i++ ) { x = nextblock_x + 24 + block_width*m_nextblockpos[i].x; y = nextblock_y + 38 + block_height*m_nextblockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, 0, 0, srccopy ); } } } void cblock::blockleft(cdc* pdc) { for( int i=0; i<4; i++ ) { if( m_blockpos[i].x <= 0 ) return; if( 0 != m_blockmap[m_blockpos[i].y][m_blockpos[i].x-1] ) return; } hideblock( pdc ); for( int i=0; i<4; i++ ) { m_blockpos[i].x -= 1; } drawblock( pdc ); } void cblock::blockright(cdc* pdc) { for( int i=0; i<4; i++ ) { if( m_blockpos[i].x >= 9 ) return; if( 0 != m_blockmap[m_blockpos[i].y][m_blockpos[i].x+1] ) return; } hideblock( pdc ); for( int i=0; i<4; i++ ) { m_blockpos[i].x += 1; } drawblock( pdc ); } void cblock::blockfastdown(cdc* pdc) { for( int i=0; i<4; i++ ) { if( m_blockpos[i].y >= 19 ) return; if( 0 != m_blockmap[m_blockpos[i].y+1][m_blockpos[i].x] ) return; } hideblock( pdc ); for( int i=0; i<4; i++ ) { m_blockpos[i].y += 1; } drawblock( pdc ); } #include "stdafx.h" #include "block.h" cblock::cblock(void) { srand( (unsigned)time(null) ); m_blockshape = 0; m_nextblockshape = rand()%7; m_blockstate = 0; m_blocklevel = 1; m_blockcurdelline = 0; m_blockrunning = false; memset(m_blockmap, 0, sizeof(m_blockmap) ); } cblock::~cblock(void) { } void cblock::blockinit( void ) { for( int i=0; i<7; i++) { m_bmpblock[i].loadbitmapw( idb_blockbar+i ); } m_bmpbkgnd.loadbitmapw( idb_bmpback ); } void cblock::createnewblock(void) { m_blockshape = m_nextblockshape; m_nextblockshape = rand()%7; m_blockstate = 0; makenewblock( m_blockshape, m_blockpos, 4 ); } void cblock::makenewblock(int shape, point pt[], int xpos) { switch(shape) { case 0: for(int i=0; i<4; i++) { pt[i].x=i+xpos; pt[i].y=0; } break; case 1: pt[0].x = 1+xpos; pt[0].y = 0; for(int i=1; i<4; i++) { pt[i].x = i-1+xpos; pt[i].y = 1; } break; case 2: pt[0].x = 0+xpos; pt[0].y = 0; pt[1].x = 1+xpos; pt[1].y = 0; pt[2].x = 1+xpos; pt[2].y = 1; pt[3].x = 2+xpos; pt[3].y = 1; break; case 3: pt[0].x = 0+xpos; pt[0].y = 1; pt[1].x = 1+xpos; pt[1].y = 1; pt[2].x = 1+xpos; pt[2].y = 0; pt[3].x = 2+xpos; pt[3].y = 0; break; case 4: pt[0].x = 0+xpos; pt[0].y = 0; for(int i=1; i<4; i++) { pt[i].x = i-1+xpos; pt[i].y = 1; } break; case 5: pt[0].x = 2+xpos; pt[0].y = 0; for(int i=1; i<4; i++) { pt[i].x = i-1+xpos; pt[i].y = 1; } break; case 6: for(int i=0; i<2; i++) { pt[i].x = i+xpos; pt[i].y = 0; pt[i+2].x = i+xpos; pt[i+2].y = 1; } break; default: break; } } void cblock::drawblock(cdc* pdc) { cdc memdc; memdc.createcompatibledc(pdc); memdc.selectobject( &m_bmpblock[m_blockshape] ) ; int x = block_x; int y = block_y; for( int i = 0; i<4; i++ ) { x = block_x + m_blockpos[i].x*block_width; y = block_y + m_blockpos[i].y*block_height; pdc->bitblt( x, y, 20, 20, &memdc, 0, 0, srccopy ); } } void cblock::blockdropdown( cdc* pdc ) { int i,j; bool babledrop = true; for( i=0; i<4; i++ ) { if( 19 == m_blockpos[i].y || 0 != m_blockmap[m_blockpos[i].y+1][m_blockpos[i].x] ) { babledrop = false; break; } } if( true == babledrop ) { hideblock( pdc ); for( i=0; i<4; i++ ) { m_blockpos[i].y++; } drawblock( pdc ); } else { for( i=0; i<4; i++ ) { m_blockmap[m_blockpos[i].y][m_blockpos[i].x] = m_blockshape+1; } for( i=0; i<20; i++ ) { for( j=0; j<10; j++ ) { if( 0 == m_blockmap[i][j] ) { break; } } if( 10 == j ) { deleteline( pdc, i, false ); m_blockcurdelline++; blockscore(1, pdc ); } } createnewblock(); makenewblock( m_blockshape, m_blockpos, 4 ); drawblock( pdc ); drawnextblock( pdc ); } } void cblock::hideblock(cdc* pdc) { cdc bkdc; bkdc.createcompatibledc(pdc); bkdc.selectobject(m_bmpbkgnd); int x, y; for( int i=0; i<4; i++ ) { x = block_x+block_width*m_blockpos[i].x; y = block_y+block_height*m_blockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, x, y, srccopy ); } bkdc.deletedc(); } void cblock::drawnextblock( cdc* pdc ) { cdc bkdc; bkdc.createcompatibledc( pdc ); bkdc.selectobject( m_bmpbkgnd ); int x ,y; pdc->bitblt( nextblock_x, nextblock_y, nextblock_width, nextblock_height, &bkdc, nextblock_x, nextblock_y, srccopy ); makenewblock( m_nextblockshape, m_nextblockpos, 0 ); bkdc.selectobject( m_bmpblock[m_nextblockshape] ); if( 0 == m_nextblockshape ) { for( int i=0; i<4; i++ ) { x = nextblock_x + 15 + block_width*m_nextblockpos[i].x; y = nextblock_y + 47 + block_height*m_nextblockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, 0, 0, srccopy ); } } else if( 6 == m_nextblockshape ) { for( int i=0; i<4; i++ ) { x = nextblock_x + 35 + block_width*m_nextblockpos[i].x; y = nextblock_y + 38 + block_height*m_nextblockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, 0, 0, srccopy ); } } else { for( int i=0; i<4; i++ ) { x = nextblock_x + 24 + block_width*m_nextblockpos[i].x; y = nextblock_y + 38 + block_height*m_nextblockpos[i].y; pdc->bitblt( x, y, block_width, block_height, &bkdc, 0, 0, srccopy ); } } } void cblock::blockleft(cdc* pdc) { for( int i=0; i<4; i++ ) { if( m_blockpos[i].x <= 0 ) return; if( 0 != m_blockmap[m_blockpos[i].y][m_blockpos[i].x-1] ) return; } hideblock( pdc ); for( int i=0; i<4; i++ ) { m_blockpos[i].x -= 1; } drawblock( pdc ); } void cblock::blockright(cdc* pdc) { for( int i=0; i<4; i++ ) { if( m_blockpos[i].x >= 9 ) return; if( 0 != m_blockmap[m_blockpos[i].y][m_blockpos[i].x+1] ) return; } hideblock( pdc ); for( int i=0; i<4; i++ ) { m_blockpos[i].x += 1; } drawblock( pdc ); } void cblock::blockfastdown(cdc* pdc) { for( int i=0; i<4; i++ ) { if( m_blockpos[i].y >= 19 ) return; if( 0 != m_blockmap[m_blockpos[i].y+1][m_blockpos[i].x] ) return; } hideblock( pdc ); for( int i=0; i<4; i++ ) { m_blockpos[i].y += 1; } drawblock( pdc ); }