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#include <stdio.h> #include <stdlib.h> #include <time.h> #include <sdl/sdl.h> #pragma comment(lib,"sdl.lib") #pragma comment(lib,"sdlmain.lib") #define TILESIZE 16 #define NBPIECES 7 #define XRES 400 #define YRES 400 #define NLINE 21 #define NCOL 12 #define STARTXZONEJEU 4 #define STARTYZONEJEU 2 #define VITESSE 500 // temps en millisecondes avant prochaine descente. #define DOUBLEFOR(i,imax,j,jmax) for(i=0;i<imax;i++) for(j=0;j<jmax;j++) struct State { int x,y,rotate; }; struct STetris { SDL_Surface* tiles; Uint8 zone[NCOL][NLINE]; Uint8 pieces[NBPIECES][4][4][4]; int numpiece,numpiecenext; struct State Scurrent; struct State Scand; int gameover,vitesse; Uint32 nextmove; }; typedef struct STetris Tetris; int SetPixel32(SDL_Surface* srf,int x,int y,Uint32 color) { Uint32 *p = (Uint32*)(((Uint8*)srf->pixels) + y * srf->pitch + x * 4); *p = color; return 0; } int BuildTileSet(SDL_Surface* srf) { Uint32 colors[NBPIECES+2][3]={{0,0,0}, {128,128,128},{255,0,0},{0,255,0},{0,0,255}, {255,255,0},{255,0,255},{0,255,255},{255,128,0} }; Uint32 Tileshem[TILESIZE]={ 0xFFFFFFFD,0xFFFFFFF5,0xFAAAAAA5,0xFAAAAAA5, 0xFAAAAAA5,0xFAAAAAA5,0xFAAAAAA5,0xFAAAAAA5, 0xFAAAAAA5,0xFAAAAAA5,0xFAAAAAA5,0xFAAAAAA5, 0xFAAAAAA5,0xFAAAAAA5,0xD5555555,0x55555555 }; int i,j,k; SDL_LockSurface(srf); for(k=0;k<NBPIECES+2;k++) { Uint32 LocalPalette[4]; for(i=0;i<4;i++) LocalPalette[i] = SDL_MapRGBA(srf->format,(colors[k][0]/3)*i,(colors[k][1]/3)*i,(colors[k][2]/3)*i,0); DOUBLEFOR(i,TILESIZE,j,TILESIZE) { int ndat = j*TILESIZE+i; Uint32 ind = ((Tileshem[ndat/16]<<((ndat%16)*2))&0xC0000000)>>30; SetPixel32(srf,k*TILESIZE+i,j,LocalPalette[ind]); } } SDL_UnlockSurface(srf); //SDL_SaveBMP(srf,"plouf.bmp"); return 0; } int BuildPieces(Tetris* T) { Uint16 shem[NBPIECES][4] = { {0xC600,0x2640,0xC600,0x2640}, {0x6C00,0x4620,0x6C00,0x4620}, {0x8E00,0x6440,0x0E20,0x44C0}, {0x6600,0x6600,0x6600,0x6600}, {0x4E00,0x4640,0x0E40,0x4C40}, {0x0F00,0x2222,0x0F00,0x2222}, {0x2E00,0x4460,0x0E80,0xC440} }; int i,j,k,l; DOUBLEFOR(i,NBPIECES,j,4) DOUBLEFOR(k,4,l,4) { int dat = ((shem[i][j]<<(l*4+k))&0x8000)>>15; T->pieces[i][j][k][l] = dat*(i+2); } return 0; } int NouvellePiece(Tetris* T) { T->numpiece = T->numpiecenext; T->numpiecenext = rand()%NBPIECES; T->Scurrent.rotate = 0; T->Scurrent.x = (NCOL-4)/2; T->Scurrent.y = 0; T->nextmove = SDL_GetTicks()+T->vitesse; return 0; } int Tetris_Init(Tetris* T) { int i; T->numpiecenext = T->gameover = T->nextmove = 0; T->vitesse = VITESSE; NouvellePiece(T); NouvellePiece(T); T->tiles = SDL_CreateRGBSurface(0,(NBPIECES+2)*TILESIZE,TILESIZE,32,0,0,0,0); BuildTileSet(T->tiles); BuildPieces(T); memset(T->zone,0,NCOL*NLINE); for(i=0;i<NCOL;i++) T->zone[i][NLINE-1] = 1; // ligne de protection basse for(i=0;i<NLINE;i++) { T->zone[0][i] = 1; // lignes de protections latérales. T->zone[NCOL-1][i] = 1; } return 0; } int Tetris_End(Tetris* T) { SDL_FreeSurface(T->tiles); return 0; } int Cube(SDL_Surface* srf,int i,int j,int numcube) { SDL_Rect Rsrc,Rdest; Rdest.x = i*TILESIZE; Rdest.y = j*TILESIZE; Rsrc.x = numcube*TILESIZE; Rsrc.y = 0; Rsrc.w = TILESIZE; Rsrc.h = TILESIZE; SDL_BlitSurface(srf,&Rsrc,SDL_GetVideoSurface(),&Rdest); return 0; } int RenderFond(Tetris* T) { // 2 fois pour toutes, double buffering, int i,j,k; for(k=0;k<2;k++) { DOUBLEFOR(i,XRES/TILESIZE,j,YRES/TILESIZE) Cube(T->tiles,i,j,1); SDL_Flip(SDL_GetVideoSurface()); } return 0; } int RenderPiece(Tetris* T,int x,int y,int npiece,int rotate,int transparence) { int i,j; DOUBLEFOR(i,4,j,4) { if (transparence && T->pieces[npiece][rotate][i][j]==0) continue; Cube(T->tiles,x+i,y+j,T->pieces[npiece][rotate][i][j]); } return 0; } int Render(Tetris* T) { int i,j; DOUBLEFOR(i,NCOL,j,NLINE) Cube(T->tiles,i+STARTXZONEJEU,j+STARTYZONEJEU,T->zone[i][j]); RenderPiece(T,STARTXZONEJEU+NCOL+2,4,T->numpiecenext,0,0); RenderPiece(T,STARTXZONEJEU+T->Scurrent.x,STARTYZONEJEU+T->Scurrent.y,T->numpiece,T->Scurrent.rotate,1); SDL_Flip(SDL_GetVideoSurface()); SDL_Delay(1); return 0; } #define PIECECARRE(T,i,j) (T->pieces[T->numpiece][T->Scand.rotate][i][j]) int Valide(Tetris* T) { int i,j; DOUBLEFOR(i,4,j,4) { Uint8 carre = PIECECARRE(T,i,j); if (carre!=0 && T->zone[T->Scand.x+i][T->Scand.y+j]!=0) return 0; } T->Scurrent = T->Scand; return 1; } int AncrePiece(Tetris* T) { int i,j; T->Scand = T->Scurrent; DOUBLEFOR(i,4,j,4) { Uint8 carre = PIECECARRE(T,i,j); if (carre!=0) T->zone[T->Scand.x+i][T->Scand.y+j] = carre; } return 0; } int VirerLigne(Tetris* T,int y) { int i,j; for(i=0;i<NCOL;i++) { for(j=y;j>0;j--) T->zone[i][j] = T->zone[i][j-1]; T->zone[i][0] = 0; } T->zone[0][0] = 1; T->zone[NCOL-1][0] = 1; return 0; } int VirerLignes(Tetris* T,int ystart) { int i,j; for(i=0;i<4;i++) { int cpt = 0; if (i+ystart==NLINE-1) break; // on ne vire pas la ligne de protection basse. for(j=0;j<NCOL;j++) if (T->zone[j][i+ystart]!=0) cpt++; if (cpt==NCOL) VirerLigne(T,i+ystart); } return 0; } int Descente(Tetris* T) { T->Scand.y++; if (Valide(T)) { T->nextmove = SDL_GetTicks()+T->vitesse; return 0; } else { if (T->Scurrent.y == 0) T->gameover = 1; AncrePiece(T); VirerLignes(T,T->Scurrent.y); NouvellePiece(T); } return 0; } int Jeu(Tetris* T) { SDL_Event E; SDL_EnableKeyRepeat(200,50); while(!T->gameover) { T->Scand = T->Scurrent; if (SDL_GetTicks()>=T->nextmove) Descente(T); while (SDL_PollEvent(&E)) { if (E.type!=SDL_KEYDOWN) continue; if (E.key.keysym.sym == SDLK_DOWN && T->nextmove-SDL_GetTicks()>20) // drop T->nextmove = SDL_GetTicks()+20; if (E.key.keysym.sym == SDLK_LEFT) T->Scand.x--; if (E.key.keysym.sym == SDLK_RIGHT) T->Scand.x++; if (E.key.keysym.sym == SDLK_SPACE) T->Scand.rotate = (T->Scand.rotate+1)%4; Valide(T); } Render(T); } return 0; } int main(int argc,char** argv) { Tetris T; srand((unsigned int)time(NULL)); SDL_Init(SDL_INIT_VIDEO); SDL_SetVideoMode(XRES,YRES,32,SDL_DOUBLEBUF); Tetris_Init(&T); RenderFond(&T); Jeu(&T); Tetris_End(&T); SDL_Quit(); return 0; }
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