main.cpp

#include <iostream>
#include <raylib.h>

using namespace std;

Color Green = Color{38, 185, 154, 255};
Color Dark_Green = Color{20, 160, 133, 255};
Color Light_Green = Color{129, 204, 184, 255};
Color Yellow = Color{243, 213, 91, 255};


int player_score = 0;
int cpu_score = 0;


class Ball{
    public:
    float x , y;
    int speed_x, speed_y;
    int radius;

    void Draw() {
      DrawCircle(x,y,radius,Yellow);

    }

    void Update(){
        x +=speed_x;
        y +=speed_y;

        if(y + radius >= GetScreenHeight() || y-radius <=0){
            speed_y *= -1;   
        }
        if(x + radius >= GetScreenWidth()) //cpu wins
        {
            cpu_score++;
            RestBall();
        }
        if(x - radius <=0){
            player_score++;
            RestBall();
        }
    }

    void RestBall(){
        x = GetScreenWidth()/2;
        y = GetScreenHeight()/2;

        int speed_choices[2]= {-1,-1};
        speed_x*=speed_choices[GetRandomValue(0,1)];
        speed_y*=speed_choices[GetRandomValue(0,1)];
    }

};

class Paddle{
    protected:
    void LimitMovement(){
        if(y<= 0){
            y=0;
        }
        if(y+height >= GetScreenHeight()){
            y=GetScreenHeight() - height;
        }
    }
    public:
    float x,y;
    float width,height;
    int speed;

    void Draw(){
         DrawRectangleRounded({x,y,width,height},0.8,0,WHITE);
    }

    void Update(){
        if(IsKeyDown(KEY_UP)){
            y = y - speed;
        }
        if(IsKeyDown(KEY_DOWN)){
            y = y+speed;
        }
        // if(y<= 0){
        //     y=0;
        // }
        // if(y+height >= GetScreenHeight()){
        //     y=GetScreenHeight() - height;
        // }
        LimitMovement();
    }
};
class CpuPaddle : public Paddle{
    public:
      void Update(int ball_y){
        if(y +height/2 >ball_y){
            y = y -speed;
        }
        if(y+height/2 <= ball_y){
            y = y +speed;
        }
        LimitMovement();
    }
};

Ball ball;
Paddle player;
CpuPaddle cpu;

int main () {
    cout<<"starting the game"<<endl;
    const int screen_width =1280;
    const int screen_height =800;

    InitWindow(screen_width,screen_height,"My Pong Game");
    SetTargetFPS(60);

    ball.radius = 20;
    ball.x = screen_width/2;
    ball.y = screen_height/2;
    ball.speed_x = 7;
    ball.speed_y = 7;

    player.width = 25;
    player.height = 120;
    player.x = screen_width-player.width - 10;
    player.y = screen_height/2 - player.height / 2;
    player.speed = 6;

    cpu.height = 120;
    cpu.width = 25;
    cpu.x = 10;
    cpu.y = screen_height/2 - cpu.height/2;
    cpu.speed = 6;



    while (WindowShouldClose() == false){   //game loop
        BeginDrawing();
        //updating
        ball.Update();
        player.Update();
        cpu.Update(ball.y);

        //checking for collisions
        if(CheckCollisionCircleRec(Vector2{ball.x,ball.y},ball.radius,Rectangle{player.x,player.y,player.width,player.height})){
            ball.speed_x *=-1;
        }
        if(CheckCollisionCircleRec(Vector2{ball.x,ball.y},ball.radius,Rectangle{cpu.x,cpu.y,cpu.width,cpu.height})){
            ball.speed_x *=-1;
        }


        //drawing
        ClearBackground(Dark_Green); //clears prev path of ball
        DrawRectangle(screen_width/2,0,screen_width/2,screen_height,Green);
        DrawCircle(screen_width/2,screen_height/2,150,Light_Green);
        
        DrawLine(screen_width/2,0,screen_width/2,screen_height,WHITE);
        ball.Draw();
        cpu.Draw();
        player.Draw();
        DrawText(TextFormat("%i",cpu_score),screen_width/4 -20,20,80,WHITE);
        DrawText(TextFormat("%i",player_score),3*screen_width/4 -20,20,80,WHITE);


        EndDrawing();
        
    }
    



    CloseWindow(); 
    return 0;
}