Scratch

//This is Source code in C++ for Rhy's Line Racer MADE BY Fanofcena AKA Abhishek Hingnikar

//Header files . (these are the basic thing that tell the computer what to do)
#include<iostream.h> // For basic In and out funcions
#include<graphics.h> // For Graphics
#include<Math.h> // for mathematical functions
#include<conio.h>// for keyboard Initialisation
#include<dos.h> // For MSDOS functions
#include<stdlib.h>//For some basic functions
#include<stdio.h>//For most
//Basic Functions(could be termed as scratch blocks) and Strutures( group of variables for an object)
// Coor declares a coordinate in 3 dimensions
struct coor{
int x;
int y;
int z;
};
//coor_xy is teh coordinate in 2 dimensions
struct coor_xy{
int x;
int y;
};

inline char keystroke()       // To check if a key is pressed and if pressed which one is pressed
{
    if(kbhit())
    {return getche();
    }
    else
    return 0;
}
inline coor_xy PntPos(coor P,coor Cam,int xrot,int yrot,int zrot,int f_len)  // The rhy's Gale1.2a programming this is how it looks in C++
{  int xy=(P.y*(cos(yrot))-P.z*(sin(yrot)));
   int xz=(P.y*(sin(yrot))+P.z*(cos(yrot)));
   int yz=(xz*(cos(xrot))-P.x*(sin(xrot)));
   int yx=(xz*(sin(xrot))+P.x*(cos(xrot)));
   int zx=(yx*(cos(zrot))-xy*(sin(zrot)));
   int zy=(yx*(sin(zrot))+xy*(cos(zrot)));
   int SFR=(f_len/f_len+yz+P.z+Cam.z);
   coor_xy ret;
   ret.x=(zx+P.x-Cam.x)*SFR;
   ret.y=(zy+P.y-Cam.y)*SFR;
   return ret;
}
inline int dist(coor P,coor Cam) // To find distance of 2 points I will use Draw distance
{ return sqrt(((P.x-Cam.x)*(P.x-Cam.x))+((P.y-Cam.y)*(P.y-Cam.y))+((P.z-Cam.z)*(P.z-Cam.z)));
}

void main() // This is the main thing that runs ie the When Flag clicked this thing runs :D though u can only have 1 main
{      coor Camera;     // Here is the declration of a coordinate camera
        //Lets initialise our camera at the starting position
        Camera.x=-100;
        Camera.y=0;
        Camera.z=-200;
           // The focal length
    int focallength = 10;



// INITIALISATION OF GRAPHIC DRIVERS
    /* request auto detection */
    int gdriver = DETECT, gmode, errorcode;
    int midx, midy, i;

/* initialize graphics, local variables*/
    initgraph(&gdriver, &gmode, "");

/* read result of initialization */
    errorcode = graphresult();
    if (errorcode != grOk)  /* an error
    occurred */
    {
    printf("Graphics error: %s\n", grapherrormsg(errorcode));
    printf("Press any key to halt:");
    getch();
    exit(1); /* terminate with error code */
    }
    char game ='y';    // a variable of type character that tells if the game loop has to be run or not
        do{ settextstyle(GOTHIC_FONT,0,5);   // This sets the text style to Gothic Font with size 5 and Horizontal typing
             for(float i=0;i<30;i+=5)// A loop that runs 6 times
                {
                     cleardevice();// the clear button
                     setbkcolor(GREEN);//sets background color to green
                     setcolor(i);// sets Pen color to variable value i
                     outtextxy(100,200,"Credits to Rhy & BWOG");
                     delay(400);// Halts the screen for 400 miliseconds
                }
            cleardevice();
            settextstyle(SANS_SERIF_FONT,0,20);
            outtextxy(190,140,"DG");
            settextstyle(SANS_SERIF_FONT,0,5);
            outtextxy(190,260,"Games");
            delay(900);
            cleardevice();
            settextstyle(0,0,6);
            setbkcolor(BLACK);
            setcolor(GREEN);
            outtextxy(10,10,"Line Racing");
            getch();
            settextstyle(0,0,2);
            outtextxy(0,180,"To Begin race press key");
            outtextxy(0,220," no options so far");
            getch(); // Halts the screen to the menu
            char RACE='t'; // Declares and sets a variable RACE to t which tells the Computer that race is going on

            coor Map[100];// Here is your map space  a list which contains 3 coordinate per element :D
            float Vel,Theta; // Variables for our car
            do
            {       cleardevice();//This gives us a fresh screen to paint
                for(int i=1;i<=100;i++)// Prints the MAP ALL AS WHOLE MUWHAHAHA C++ HAS NO PROBLEM PASTING THE WHOLE 100Point map its too mere for it :p
                {
                    lineto(PntPos(Map[i],Camera,0,0,0,focallength).x,PntPos(Map[i],Camera,0,0,0,focallength).y);// This function draws line from current point to the given point
                }
            char k = keystroke();   // sets a character variable keystroke to the keypressed
            if(k=='w') // Accelerates your car
            { if(Vel<12)
                Vel=Vel+1;
            }
            else if(k=='s')  // Brakes!!!!!!
            { if(Vel>0);
                Vel=Vel-1;
            }
            if(k=='a') // here we built the steering wheel though i think of using mouse rather then keyboard for directional control
            { Theta = Theta+10/Vel;
            }
            else if(k=='d')
            { Theta = Theta - 10/Vel;
            }
            if(k=='q')
            { exit(1);// this means if Q is pressed the program will exit
            }

             // The following code tells the car to move
            Camera.x= Camera.x+Vel*cos(Theta);
            Camera.y= Camera.y+Vel*sin(Theta);
            delay(2);
 }while(RACE == 't');
    cleardevice();
    outtext("Do u want to Quit(y/n)");
    game= getche(); // Sets Game to N when the race is done and U want to quit;
        if(game!='y'&&game!='n')// if game is not y or n starts a loop to ask
               { do{ cleardevice();
                       outtext("Please enter a valid choice(y/n)");
                   game= getche();
                      }while(game!='y'&&game!='n);
                }
}while(game=='y'); // Runs the loop till game =  Y
}