Crafter.Graphics/example/HelloUI/main.cpp

/*
Crafter®.Graphics
Copyright (C) 2025 Catcrafts®
Catcrafts.net

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3.0 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
*/

#include <cstdint>
#include <iostream>

import Crafter.Event;
import Crafter.Graphics;

using namespace Crafter;

// Constants
const uint32_t SCREEN_WIDTH = 800;
const uint32_t SCREEN_HEIGHT = 600;

const uint32_t PADDLE_WIDTH = 10;
const uint32_t PADDLE_HEIGHT = 100;
const float PADDLE_SPEED = 5.0f;

const uint32_t BALL_SIZE = 10;
const float BALL_SPEED = 5.0f;

struct Paddle {
    float x, y;
};

struct Ball {
    float x, y;
    float dx, dy;
};

Paddle leftPaddle = { 50, SCREEN_HEIGHT / 2 - PADDLE_HEIGHT / 2 };
Paddle rightPaddle = { SCREEN_WIDTH - 50 - PADDLE_WIDTH, SCREEN_HEIGHT / 2 - PADDLE_HEIGHT / 2 };

Ball ball = { SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2, BALL_SPEED, BALL_SPEED };

uint32_t scoreLeft = 0;
uint32_t scoreRight = 0;


void resetBall() {
    ball.x = SCREEN_WIDTH / 2;
    ball.y = SCREEN_HEIGHT / 2;
    // Reverse direction on reset
    ball.dx = -ball.dx;
    ball.dy = (rand() % 2 == 0) ? BALL_SPEED : -BALL_SPEED;
}

void updateBall() {
    ball.x += ball.dx;
    ball.y += ball.dy;

    // Top and bottom collision
    if (ball.y <= 0 || ball.y + BALL_SIZE >= SCREEN_HEIGHT) {
        ball.dy = -ball.dy;
    }

    // Left paddle collision
    if (ball.x <= leftPaddle.x + PADDLE_WIDTH &&
        ball.y + BALL_SIZE >= leftPaddle.y &&
        ball.y <= leftPaddle.y + PADDLE_HEIGHT) {
        ball.dx = std::abs(ball.dx); // Make sure it moves right
    }

    // Right paddle collision
    if (ball.x + BALL_SIZE >= rightPaddle.x &&
        ball.y + BALL_SIZE >= rightPaddle.y &&
        ball.y <= rightPaddle.y + PADDLE_HEIGHT) {
        ball.dx = -std::abs(ball.dx); // Make sure it moves left
    }

    // Scoring
    if (ball.x < 0) {
        scoreRight++;
        resetBall();
    } else if (ball.x > SCREEN_WIDTH) {
        scoreLeft++;
        resetBall();
    }
}

void moveLeftPaddleUp() {
    if (leftPaddle.y > 0) leftPaddle.y -= PADDLE_SPEED;
}

void moveLeftPaddleDown() {
    if (leftPaddle.y + PADDLE_HEIGHT < SCREEN_HEIGHT) leftPaddle.y += PADDLE_SPEED;
}

void moveRightPaddleUp() {
    if (rightPaddle.y > 0) rightPaddle.y -= PADDLE_SPEED;
}

void moveRightPaddleDown() {
    if (rightPaddle.y + PADDLE_HEIGHT < SCREEN_HEIGHT) rightPaddle.y += PADDLE_SPEED;
}

int main() {
    WindowWaylandWayland window("HelloWindow", 1280, 720);

	

    window.StartSync();
}