#include <asm-generic/errno.h>
#include <raylib.h>
#include <stdio.h>
#include <stdlib.h>

//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{

    const int screenWidth = 1000;
    const int screenHeight = 550;

    InitWindow(screenWidth, screenHeight, "Pong Clone");

    Vector2 ballPosition = { (float)screenWidth/2, (float)screenHeight/2 };
    Vector2 rightBarPosition = { (float)screenWidth -100, (float)screenHeight/2 };

    Rectangle rightBar = {rightBarPosition.x, rightBarPosition.y, 30,200};

    Vector2 ballVelocity = {10.f, 0.0f};

    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
    //--------------------------------------------------------------------------------------

    const Color backroundColor = BLUE;
    const Color barColor = GREEN;

    int speed = 1;




    // Main game loop
    while (!WindowShouldClose())    // Detect window close button or ESC key
    {





        ballPosition.x = ballPosition.x + ballVelocity.x * GetFrameTime() * 10 * speed;
        ballPosition.y = ballPosition.y + ballVelocity.y * GetFrameTime() * 10 * speed;
        rightBar.x = rightBarPosition.x;
        rightBar.y = rightBarPosition.y;

        if (CheckCollisionCircleRec(ballPosition, 25, rightBar)) {
            if (speed == 1) {
                float value = rand() % (10 - -10 + 1) + -10;
                ballVelocity.y = value;

            }

            ballVelocity.x = -10.0f;

            speed++;
        } if (ballPosition.x >= (float)screenWidth) {
            return 0;
        } if (ballPosition.y >= (float)screenHeight) {
            ballVelocity.y = ballVelocity.y * -1;
        } if (ballPosition.y <= 0) {
            ballVelocity.y = ballVelocity.y * -1;



        } if (ballPosition.x <= 141) {
            ballVelocity.x = ballVelocity.x +10.0f;
            ballVelocity.y = ballVelocity.y * -1;


        }
        // Update
        //----------------------------------------------------------------------------------
        if (IsKeyDown(KEY_UP)) rightBarPosition.y -= 2.0f * GetFrameTime() * 100;
        if (IsKeyDown(KEY_DOWN)) rightBarPosition.y += 2.0f * GetFrameTime() * 100;
        //----------------------------------------------------------------------------------

        // Draw
        //----------------------------------------------------------------------------------
        char str[3];
        BeginDrawing();

            ClearBackground(backroundColor);

            sprintf(str, "%d", speed);

            DrawText(str, screenWidth / 2, screenHeight -50, 50, RED);

            DrawRectangle(rightBarPosition.x, rightBarPosition.y, 30, 200, barColor);
            DrawRectangle(0 + 100, ballPosition.y -100, 30, 200, barColor);

            DrawCircleV(ballPosition, 25, ORANGE);

        EndDrawing();
        //----------------------------------------------------------------------------------
    }

    // De-Initialization
    //--------------------------------------------------------------------------------------
    CloseWindow();        // Close window and OpenGL context
    //--------------------------------------------------------------------------------------

    return 0;
}