car_game.cpp

#include<iostream>
#include<conio.h>
// #include<dos.h>
#include<direct.h>
#include<windows.h>
#include<time.h>

#define SCREEN_WIDTH 90
#define SCREEN_HEIGHT 26
#define WIN_WIDTH 70

using namespace std;

HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);
COORD CursorPosition;

int enemyY[3];
int enemyX[3];
int enemyFlag[3];
char car[4][4] = {' ', '*','*',' ',
                                      '*','*','*','*',
                                      ' ','*','*',' ',
                                      '*','*','*','*'};

int carPos = (WIN_WIDTH)/2;
int score = 0;

void gotoxy(int x, int y){
    CursorPosition.X = x;
    CursorPosition.Y = y;
    SetConsoleCursorPosition(console, CursorPosition);
}
void setcursor(bool visible, DWORD size){
    if(size == 0)
        size = 20;

        CONSOLE_CURSOR_INFO lpCursor;
        lpCursor.bVisible = visible;
        lpCursor.dwSize = size;
        SetConsoleCursorInfo(console, &lpCursor);
}
void drawBorder(){
    for(int i=0; i<SCREEN_HEIGHT; i++){
        for(int j=0; j<17; j++){
                gotoxy(0+j, i); 
                cout<<"*";
                gotoxy(WIN_WIDTH-j, i);
                cout<<"*";
        }
    }
    for(int i=0; i<SCREEN_HEIGHT; i++){
        gotoxy(SCREEN_WIDTH, i);
        cout<<"*";
    }
}
void genEnemy(int ind){
    enemyX[ind] = 17 + rand()%(33);
}
void drawEnemy(int ind){
    if(enemyFlag[ind] == true){
        gotoxy(enemyX[ind], enemyY[ind]);
        cout<<"****";
        gotoxy(enemyX[ind], enemyY[ind]+1); 
        cout<<" ** ";
        gotoxy(enemyX[ind], enemyY[ind]+2);
        cout<<"****";
        gotoxy(enemyX[ind], enemyY[ind]+3);
        cout<<" ** "; 
    }
}
void eraseEnemy(int ind){
    if(enemyFlag[ind] == true ){
        gotoxy(enemyX[ind], enemyY[ind]);
        cout<<"    ";
        gotoxy(enemyX[ind], enemyY[ind]+1); 
        cout<<"    ";
        gotoxy(enemyX[ind], enemyY[ind]+2);
        cout<<"    ";
        gotoxy(enemyX[ind], enemyY[ind]+3);
        cout<<"    "; 
    }
}
void resetEnemy(int ind){
    eraseEnemy(ind);
    enemyY[ind] = 1;
    genEnemy(ind);
}
void drawCar(){
    for(int i = 0; i<4; i++){
        for(int j = 0; j<4; j++){
            gotoxy(j+carPos, i+22); 
            cout<<car[i][j];
        }
    }
}
void eraseCar(){
    for(int i = 0; i<4; i++){
        for(int j = 0; j<4; j++){
            gotoxy(j+carPos, i+22);
            cout<<"  ";
        }
    }
}
int collision(){
    if(enemyY[0]+4 >= 23){
        if(enemyX[0] + 4 - carPos >= 0 && enemyX[0] + 4 - carPos < 9){
            return 1;
        }
    }
    return 0;
}
void gameover(){
    system("cls");
    cout<<endl;
    cout<<"\t\t----------------------------------------------"<<endl;
    cout<<"\t\t-------------------Game Over------------------"<<endl;
    cout<<"\t\t----------------------------------------------"<<endl;
    cout<<"\t\tPress any key to go back to menu.";
    getch();
}
void updateScore(){
    gotoxy(WIN_WIDTH + 7, 5);
    cout<<"Score: "<<score<<endl;
}
void instructions(){

    system("cls");
    cout<<"Instructions";
    cout<<"\n------------------------";
    cout<<"\n Avoid Cars by moving left or right. ";
    cout<<"\n\n Press 'a' to move left";
    cout<<"\n Press 'd' to move right";
    cout<<"\n Press 'escape' to exit";
    cout<<"\n\n Press any key to go back to menu";
    getch(); 
}
void play(){
    carPos = -1 + WIN_WIDTH/2;
    score = 0;
    enemyFlag[0] = 1;
    enemyFlag[1] = 0;
    enemyY[0] = enemyY[1] = 1;

    system("cls");
    drawBorder();
    updateScore();
    genEnemy(0);
    genEnemy(1);

    gotoxy(WIN_WIDTH + 7, 2);
    cout<<"Car Game";
    gotoxy(WIN_WIDTH + 6, 4);
    cout<<"----------------";
    gotoxy(WIN_WIDTH + 6, 6);
    cout<<"----------------";
    gotoxy(WIN_WIDTH + 7, 12);
    cout<<"Control";
    gotoxy(WIN_WIDTH + 7, 13);
    cout<<"----------------";
    gotoxy(WIN_WIDTH + 2, 14);
    cout<<" A key - Left";
    gotoxy(WIN_WIDTH + 2, 15);
    cout<<" D key - Right";

    gotoxy(18,5);
    cout<<"Press any key to start";
    getch();
    gotoxy(18, 5);
    cout<<"                      ";

    while(1){
        if(kbhit()){
            char ch = getch();
            if(ch == 'a' || ch == 'A'){
                if(carPos > 18)
                    carPos -= 4;
            }
            if(ch == 'd' || ch == 'D'){
                if(carPos < 50)
                    carPos += 4;
            }
            if(ch == 27){
                break;
            }
        }

        drawCar();
        drawEnemy(0);
        drawEnemy(1);
        if(collision() == 1){
            gameover();
            return;
        }
        Sleep(50);
        eraseCar();
        eraseEnemy(0);
        eraseEnemy(1);

        if(enemyY[0] == 10)
            if(enemyFlag[1] == 0)
                enemyFlag[1] = 1;

        if(enemyFlag[0] == 1)
            enemyY[0] += 1;

        if(enemyFlag[1] == 1)
            enemyY[1] += 1;

        if(enemyY[0] > SCREEN_HEIGHT-4){
            resetEnemy(0);
            score++;
            updateScore();
        }
        if(enemyY[1] > SCREEN_HEIGHT -4){
            resetEnemy(1);
            score++;
            updateScore();
        }
    }
}

int main(){
    setcursor(0,0);
    srand( (unsigned)time(NULL));

    do{

        system("cls");
        gotoxy(10,5);
        cout<<"----------------------";
        gotoxy(10,6);
        cout<<" |     Car Game      |";
        gotoxy(10,7);
        cout<<"----------------------";
        gotoxy(10,9);
        cout<<"1. Start Game";
        gotoxy(10,10);
        cout<<"2. Instructions";
        gotoxy(10,11);
        cout<<"3. Quit";
        gotoxy(10,13);
        cout<<"Select Option: ";
        char op = getche();

        if(op == '1') play();
        else if(op == '2') instructions();
        else if(op == '3') exit(0);

    } while(1);

    return 0;
}


// THE END.....