#include "TXlib.h"

void CircleDraw ();
void CirclePhysics (int* x, int* y, int* VX, int* VY, int DT, double ax, double ay);
void circleMove ( int* VX, int* VY, int WhatForDown, int WhatForUp, int WhatForLeft, int WhatForRight);
void CircleDDDD(int x, int y);
void CircleDDDD2(int x2, int y2);


int main()
    {
    txCreateWindow (1020, 700);


    CircleDraw ();



    return 0;
    }




void CircleDraw ()
    {
     int x = 100, y = 100;
     int VX = 10, VY = 5;
     int DT = 1;


     int x2 = 600, y2 = 500;
     int VX2 = 10, VY2 = 5;

     double ax = 0, ay = 0;

    while (!GetAsyncKeyState(VK_ESCAPE))
        {
        txSetColor (RGB(255, 0, 0));
        CircleDDDD(x, y);
        CircleDDDD2(x2, y2);




        CirclePhysics (&x, &y, &VX, &VY, DT, ax, ay);
        circleMove ( &VX, &VY, VK_DOWN, VK_UP, VK_LEFT, VK_RIGHT);

        CirclePhysics (&x2, &y2, &VX2, &VY2, DT, ax, ay);
        circleMove ( &VX2, &VY2, 'S', 'W', 'A', 'D');

        txSleep (1);
        }
     }




    void CirclePhysics (int* x, int* y, int* VX, int* VY, int DT, double ax, double ay)
        {
        *x = *x + *VX * DT;
        *y = *y + *VY * DT;

        *x = *x + ax*DT;
        *y = *y + ay*DT;

        if (*x > 1020)
            {
            *VX = -(*VX);
            *x = 1020;
            txSetFillColor (RGB (rand(), rand(), rand()));
            }

        if (*x < 0)
            {
            *VX = -(*VX);
            *x = 0;
            txSetFillColor (RGB (rand(), rand(), rand()));
            }

        if (*y < 0)
            {
            *VY = -(*VY);
            *y = 0;
            txSetFillColor (RGB (rand(), rand(), rand()));
            }

        if (*y > 700)
            {
            *VY = -(*VY);
            *y = 700;
            txSetFillColor (RGB (rand(), rand(), rand()));
            }


        txSleep (0);

        }



     void circleMove ( int* VX, int* VY, int WhatForDown, int WhatForUp, int WhatForLeft, int WhatForRight)
        {
         if (GetAsyncKeyState (WhatForUp))
            {
            (*VY)--;
             txSetFillColor (RGB (rand(), rand(), rand()));
            }

        if (GetAsyncKeyState(WhatForDown))
            {
            (*VY)++;
             txSetFillColor (RGB (rand(), rand(), rand()));
            }

        if (GetAsyncKeyState(WhatForLeft))
            {
            (*VX)--;
             txSetFillColor (RGB (rand(), rand(), rand()));
            }

        if (GetAsyncKeyState(WhatForRight))
            {
            (*VX)++;
             txSetFillColor (RGB (rand(), rand(), rand()));
            }

        }


void CircleDDDD(int x, int y)
        {
        txCircle (x, y, 50);

        }


void CircleDDDD2(int x2, int y2)
        {
        txCircle (x2, y2, 50);

        }