The Pacman returns - Games and Graphics Source Code in C

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Home » C Home » Games and Graphics Home » The Pacman returns

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Title	The Pacman returns
Author	Vaqar Hyder
Author Email	vihadier3567 [at] hotmail.com
Description	This game is totally made using VDU memory. Graphics is not used atall. I mad this project during my First sem final exams.To be honest I cant take all of the credit But certainly made through combined efforts.
Category	C » Games and Graphics
Hits	406052
Code	Select and Copy the Code
Code : #include<graphics.h> #include<stdlib.h> #include<ctype.h> #include<dos.h> #include<time.h> #include<stdio.h> #include<conio.h> #define RIGHT 0 #define LEFT 1 #define UP 2 #define DOWN 3 void initialise(void); char endscreen(void); void startscreen(void); void music(int); void vline(unsigned char ,int,int,int,int); void hline(unsigned char,int,int,int,int); void drawbox (int,int,int,int,char); void gamescreen(void); void size (int,int); void writechar(char,int,int,int); void monitor(void); void getkeyhit(void); int testkeys(void); void readchar(int,int,unsigned char); void bug(int ,int ,int ,unsigned char ); void movebugright(int ,int ,unsigned char ); void movebugleft(int ,int ,unsigned char ); void movebugup(int ,int ,unsigned char ); void movebugdown(int ,int ,unsigned char ); void killeater(void); int maze[25][80],score,row,col,ascii,scan,liveslost,delayfactor; int gd=DETECT,gm,midx,midy,maxx,maxy; int bugnumber , r[5],c[5],dir[5]; unsigned char charbelow[5]; char far vid_mem= (char far ) 0xB8000000L ; void main(void) { char ans ; clrscr(); / intialize randonm number generator wih a random value / randomize (); startscreen(); while (1) { / Initialize variables at thee4 start of each game/ /create opening screen/ initialise(); / Draw ther screen for the game/ gamescreen(); / monitor the movement of the bugs and the eater/ monitor(); /create ending screen/ ans=endscreen(); /check whether the user wishes to continue playing/ if(ans== 'N') break; } } void startscreen(void) { char ch; int i; / Intialize the graphices system/ initgraph (&gd,&gm,"d:\tc\bgi"); / get maximum x and y screen coordinates/ maxx = getmaxx(); maxy= getmaxy(); / calculate the center of the screen/ midx= maxx/2; midy=maxy/2; / draw a double-lined box/ setcolor(GREEN); rectangle (0,0,maxx,midy); setcolor(BLUE); rectangle (2,2,maxx-2,maxy-2); setcolor(YELLOW); / Draw two vertical lines/ line (55,1,55,maxy-2); line (maxx-55,1,maxx-55,maxy-2); /display the string "EATER" ,horizontally / setcolor(6); settextjustify (CENTER_TEXT,CENTER_TEXT); settextstyle (4,HORIZ_DIR,8); outtextxy (midx,midy,"The PacMan"); / Place the eater character at random on the start screen/ int loop; randomize(); for(loop=0; loop<40;loop++) { gotoxy(rand() % 80,rand()%25); music(1); printf("%c",2); delay(100); } nosound(); /play the starting music/ / Clear the area enclosed by the double-lined boundry / setviewport (0,0,maxx,maxy,1); clearviewport(); / Draw the screen for display instructions/ setcolor(BLUE); rectangle(30,0,maxx-33,maxy); setcolor(YELLOW); for (i=15;i<=maxy-15;i+=15) { ellipse(15,i,0,360,6,3); ellipse(maxx-15,i,0,360,6,3); } setcolor(5); settextjustify (CENTER_TEXT,TOP_TEXT); settextstyle(4,HORIZ_DIR,5); outtextxy (midx,60,"INSTRUCTION"); /display instruction/ settextstyle(2,HORIZ_DIR,5); outtextxy(midx,110,"You goal:- To eatup all the CRUNCHY MUNCHY "); outtextxy(midx,130," UNDAY scattered throughtout the BHOOL BHULLYIAN "); outtextxy(midx,170,"Your task is not a HALWA! There are 5 Rascals chasing you "); outtextxy(midx,210,"The Eater.You have to watch out for the bugs "); outtextxy(midx,250,"To help you ,we have bestowed the PacMan with 3 Janums"); outtextxy(midx,290,"You can move around the BHOOL BHULLYIAN using arrow keys "); outtextxy(midx,330,"If you are ready to start, press any key"); setcolor(GREEN); settextstyle (DEFAULT_FONT,HORIZ_DIR,3); outtextxy(midx,400,"We wish you Best of luck"); /Wait for key press/ while(!kbhit()); /Flush the keyboard buffer/ if (getch()==0) getch(); /Draaw the screen for asking user level/ setviewport (0,0,maxx,maxy,1); clearviewport(); rectangle(midx-200,midy-60,midx+200,midy+60); settextstyle (DEFAULT_FONT,HORIZ_DIR,2); outtextxy(midx,60,"Select Speed"); settextstyle (DEFAULT_FONT,HORIZ_DIR,1); outtextxy(midx,90,"Slow(S)"); outtextxy(midx,105,"Medium(M)"); outtextxy(midx,120,"Fast(F)"); /Get user level/ /flush the keyboard buffer/ if ((ch=getch())==0) getch(); /Set the value of variable delayfactor according to level selected/ switch(toupper(ch)) { case'S': delayfactor=100; break; case'M': delayfactor=50; break; case'F': delayfactor=20; break; default: delayfactor=100; } if(delayfactor==100) outtextxy(midx,midy,"Slow(S)"); if(delayfactor==50) outtextxy(midx,midy,"Medium(M)"); if(delayfactor==20) outtextxy(midx,midy,"Fast(F)"); /Change over to text mode/ while(!kbhit()); closegraph(); restorecrtmode(); } void music(int type) { float octave[7]={130.81,146.83,164.81,174.61,196,220,246.94}; int n,i; switch(type) { case 1: n=random(6); sound(octave[n]4); delay(50); break; case 2: for(i=6;i>=0;i--){ sound(octave[i]); delay(54);} nosound(); break; case 3: sound(octave[6]2); delay(50); nosound(); }} char endscreen() { char ans; initgraph(&gd,&gm,"d:\tc\bgi"); rectangle(0,0,maxx,maxy); rectangle(2,2,maxx-2,maxy-2); settextjustify(CENTER_TEXT,CENTER_TEXT); settextstyle(TRIPLEX_FONT,HORIZ_DIR,3); if(liveslost==3) { outtextxy(midx,midy-30,"Bad Luck!!"); outtextxy(midx,midy,"Try Again");} else { outtextxy(midx,midy/2,"You really are a"); settextstyle(DEFAULT_FONT,HORIZ_DIR,6); outtextxy(midx,midy,"GENIUS!!"); } settextstyle(TRIPLEX_FONT,HORIZ_DIR,3); outtextxy(midx,midy+midy/2,"Another game(Y?N)..."); while(!(ans=='Y'\|\|ans=='N')) { fflush(stdin); ans=getch(); ans=toupper(ans); } closegraph(); restorecrtmode(); return(ans); } void initialise(void) { int j; /initialise row and column of EATere/ row=12; col=40; r[0]=3;c[0]=76; r[1]=3;c[1]=12; r[2]=12;c[2]=4; r[3]=14;c[3]=62; score=0; liveslost=0; bugnumber=0; for(j=0;j<4;j++) { dir[j]=0; charbelow[j]=250; } } void gamescreen(void) { int i ; size(32,0); /hide cursor/ /Fill the screen with the specified color/ drawbox (0,0,16,79,12); //draw the horizontal lines of the maze /Draw the titbits/ hline(205,1,0,0,79); hline(205,1,2,2,20); hline(205,1,2,22,38); hline(205,1,2,42,61); hline(205,1,2,63,77); hline(205,1,4,2,20); hline(205,1,4,22,61); hline(205,1,4,63,77); hline(205,1,17,0,79); hline(205,1,15,2,38); hline(205,1,15,42,77); hline(205,1,13,0,12); hline(205,1,13,65,78); hline(205,1,13,16,61); hline(205,1,11,2,14); hline(205,1,11,62,77); hline(205,1,8,16,61); hline(205,1,6,2,38); hline(205,1,6,42,77); hline(205,1,7,63,77); hline(205,1,9,63,78); hline(205,1,7,2,14); hline(205,1,9,1,14); /Draw the columns of the titbits / vline(186,1,0,0,16); vline(186,1,79,0,16); vline(186,1,40,0,2); vline(186,1,40,4,6); vline(186,1,14,12,14); vline(186,1,40,13,15); vline(186,1,63,12,14); vline(186,1,40,9,11); vline(202,1,14,15,15); vline(202,1,63,15,15); vline(203,1,40,0,0); vline(203,1,40,4,4); vline(203,1,40,8,8); vline(203,1,40,13,13); vline(187,1,79,0,0); vline(201,1,0,0,0); vline(188,1,79,17,17); vline(200,1,0,17,17); vline(204,1,0,9,9); vline(204,1,0,13,13); vline(185,1,79,9,9); vline(185,1,79,13,13); for(int vlin=16;vlin<=60;vlin+=2) vline(186,1,vlin,10,11); gotoxy(51,24); printf("Press Esc to stop the game"); gotoxy(2,24); printf("Point: %3d",score); /Place the five bugs at strategic Positions/ writechar(2,3,76,15); writechar(2,3,12,15); writechar(2,12,4,15); writechar(2,14,62,15); /Play Music/ music(2); } /Draw a box filling the required area/ void drawbox (int sr,int sc,int er,int ec,char attr) { int r,c; char far v; for(r=sr;r<=er;r++) {for(c=sc;c<=ec;c++){ v=vid_mem+(r160)+(c2); v=250 ; v++; v=attr;}}} /* Write character and its attributes into memeory / void writechar(char ch,int r,int c,int attr) { char far v ; /calculate address/ v=vid_mem+(r160)+c2; v=ch;/store ascii code/ v++; v=attr;/store attribute / } /draws horizantal line/ void hline(unsigned char ch,int attr,int r,int c1,int c2) { int c; for(c=c1;c<=c2;c++) { writechar (ch,r,c,attr); /if tibit placed at row r and column c, set corresponding element of array maez[][]to 1/ maze[r][c]=1; } } /draws vertical line / void vline(unsigned char ch,int attr,int c,int r1,int r2) { int r; for(r=r1;r<=r2;r++) { writechar(ch,r,c,attr); /if tibit placed at row r and column c, set corresponding element of array maez[][]to 1/ maze[r][c]=1; } } void size(int ssl,int esl) { union REGS i,o; i.h.ah=1; i.h.ch=ssl; i.h.cl=esl; i.h.bh=0; int86(16,&i,&o); } void monitor(void) { int key ; unsigned char ch; while(1) { /place eater at specified row and column / writechar(1,row,col,14); /move bugs around until a key is hit / getkeyhit(); /if all 3 lives of the eater are lost / if(liveslost==3 ) break; /place a space in the position currently occuped by the eater/ writechar(' ',row,col,1); /update the position of the eater/ key =testkeys(); /if invalid key pressed/ if(key==0) { /write backeater in its orignal position / writechar(1,row,col,14); } else { /read character at the position whixh the eater is to occupy / readchar(row,col,&ch); /if character read is tibit ,increment score and sound music/ if(ch==250) { score++; music(3); } if(ch==2) killeater(); /if character read is bug , kill the eater / if(liveslost==3) break; /print the latest score/ gotoxy(2,24); printf("points : %3d",score); /if all the tibits are eaten up/ if(score>=692) { /erase the last tibit/ writechar(' ',row,col,1); break; } } } } /moves the bugs aroubnd until a key is hit / void getkeyhit() { union REGS i,o; int count; /unti a player hits a key, move each bug in turn/ while(!kbhit()) { /introduce delay/ delay(delayfactor); bug(&r[bugnumber],&c[bugnumber],&dir[bugnumber],&charbelow[bugnumber]); /if all 3 lives of the eater are lost/ if (liveslost==3) return; /goto next bug/ bugnumber++; /start with the first bug if allfive bugs have been moved/ if(bugnumber==4) bugnumber=0; } /issue interrupt to read the ascii code and scan code od the kay pressed/ i.h.ah=0;/store service no/ int86(22,&i,&o);/issue interrupt/ ascii=o.h.al; scan=o.h.ah; } /reports which key has ben hit/ int testkeys(void) { switch(scan) { case 72:/up arrow/ /if path is not present in the specified direction / if(maze[row-1][col]==1) return(0); /update row of eater/ row--; break; case 80:/down arrow/ if(maze[row+1][col]==1) return(0); row++; break; case 77:/right arrow/ if(maze[row][col+1]==1) return(0); col++; break; case 75:/left arrow/ if(maze[row][col-1]==1) return(0); col--; break; case 1:/esc key/ exit(0);/terminate the programm/ default: return(0); } } /reads the character presennt at the row r and volumn c into ch/ void readchar(int r,int c,unsigned char ch) { char far v; /calculate addresss/ v=vid_mem+(r160) +c2; ch=v; } /moves the specefy bug in the appropriate direction/ void bug(int r,int c,int* dir,unsigned char ch) { int trials=1,flag=0; char temp; /select a valid direction which takes the bug closer to eater in each if statement the 1st condition checks whether the movement in that directionwould move the bug closer to the eater , whereas the 2nd condition checks if the maze permits a movement in that direction/ if(abs(r-1-row)<abs(r-row)&&maze[r-1][c]!=1) dir=UP; else if(abs(r+1-row)<abs(r-row)&&maze[r+1][c]!=1) dir=DOWN; else if(abs(c+1-col)<abs(c-col)&&maze[r][c+1]!=1) dir=RIGHT; else if(abs(c-1-col)<abs(c-col)&&maze[r][c-1]!=1) dir=LEFT; /check whether the direction chosen contains another bug , if so find an alternate direction/ while(1) { switch(dir) { case RIGHT: /if there is a path to right of bug/ if(maze[r][c+1]!=1) { /* read the character to the right of the bug/ readchar(r,c+1,&temp); if(temp==2) { /if the character is again a bug find alternate direction/ if(maze[r][c-1]!=1) dir=LEFT; else { /if patch exists to the top of the bug/ if (maze[r-1][c]!=1) dir=UP; else { /if path exist below the bug/ if(maze[r+1][c]!=1) dir=DOWN; } } } else { /if there is no bug to the right of the bug being considered , move the bug right/ movebugright(r,c,ch); flag=1; } } else { /since there is no pat in the RIGHT directio , try another path/ dir=random(4); } break; case LEFT: /if there is a path to the LEFT of the bug/ if(maze[r][c-1]!=1) { /read the character to the ;eft of the bug/ readchar(r,c-1,&temp); if(temp==2) { if(maze[r][c+1]!=1) dir=RIGHT; else { if(maze[r-1][c]!=1) dir=UP; else { if(maze[r+1][c]!=1) dir=DOWN; } } } else { movebugleft(r,c,ch); flag=1; } } else { dir=random(4); } break; case UP: if(maze[r-1][c]!=1) { readchar(r-1,c,&temp); if(temp==2) { if(maze[r][c+1]!=1) dir=RIGHT; else { if(maze[r][c-1]!=1) dir=LEFT; else { if(maze[r+1][c]!=1) dir=DOWN; } } } else { movebugup(r,c,ch); flag=1; } } else dir=random(4); break; case DOWN: if(maze[r+1][c]!=1) { readchar(r+1,c,&temp); if (temp==2) { if(maze[r][c+1]!=1) dir=RIGHT; else { if(maze[r][c-1]!=1) dir=LEFT; else { if(maze[r-1][c]!=1) dir=UP; } } } else { movebugdown(r,c,ch); flag=1; } } else dir=random(4); break; } if(flag==1) break; trials++; if(trials>15) break; } if(r==row&&c==col) killeater(); } void movebugleft( int row,int * colm,unsigned char ch) { if( ch==0) ch=0; writechar(ch,row,colm,12); colm=colm-1; readchar(row,colm,ch); if(ch==1) ch=' '; writechar(2,row,colm,15); } void movebugright(int row,int colm,unsigned char ch) { if( ch==0) ch=0; writechar(ch,row,colm,12); colm=colm+1; readchar(row,colm,ch); if(ch==1) ch=' '; writechar(2,row,colm,15); } void movebugup(int row,int col,unsigned char ch) { if( ch==0) ch=0; writechar(ch,row,col,12); row=row-1; readchar(row,col,ch); if(ch==1) ch=' '; writechar(2,row,col,15); } void movebugdown(int row,int col,unsigned char ch) { if( ch==0) ch=0; writechar(ch,row,col,12); row=row+1; readchar(row,col,ch); if(ch==1) ch=' '; writechar(2,row,col,15); } void killeater(void){ int r,c; r=row; c=col; writechar(1,row,col,112); writechar(1,23,15+liveslost*3,14); music(2); liveslost++; if(liveslost==3) return; row=12; col=40; writechar(1,row,col,14); }

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