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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Game.h"
namespace Pong {
Game::Game()
{
set_override_cursor(Gfx::StandardCursor::Hidden);
start_timer(16);
reset();
}
Game::~Game()
{
}
void Game::reset_paddles()
{
m_player1_paddle.moving_up = false;
m_player1_paddle.moving_down = false;
m_player1_paddle.rect = { game_width - 12, game_height / 2 - 40, m_player1_paddle.width, m_player1_paddle.height };
m_player2_paddle.moving_up = false;
m_player2_paddle.moving_down = false;
m_player2_paddle.rect = { 4, game_height / 2 - 40, m_player2_paddle.width, m_player2_paddle.height };
}
void Game::reset()
{
reset_ball(1);
reset_paddles();
}
void Game::timer_event(Core::TimerEvent&)
{
tick();
}
void Game::paint_event(GUI::PaintEvent& event)
{
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.fill_rect(rect(), Color::Black);
painter.fill_rect(enclosing_int_rect(m_net.rect()), m_net.color);
painter.fill_ellipse(enclosing_int_rect(m_ball.rect()), Color::Red);
painter.fill_rect(enclosing_int_rect(m_player1_paddle.rect), m_player1_paddle.color);
painter.fill_rect(enclosing_int_rect(m_player2_paddle.rect), m_player2_paddle.color);
painter.draw_text(player_1_score_rect(), String::formatted("{}", m_player_1_score), Gfx::TextAlignment::TopLeft, Color::White);
painter.draw_text(player_2_score_rect(), String::formatted("{}", m_player_2_score), Gfx::TextAlignment::TopLeft, Color::White);
}
void Game::keyup_event(GUI::KeyEvent& event)
{
switch (event.key()) {
case Key_Up:
m_player1_paddle.moving_up = false;
break;
case Key_Down:
m_player1_paddle.moving_down = false;
break;
default:
break;
}
}
void Game::keydown_event(GUI::KeyEvent& event)
{
switch (event.key()) {
case Key_Escape:
GUI::Application::the()->quit();
break;
case Key_Up:
m_player1_paddle.moving_up = true;
break;
case Key_Down:
m_player1_paddle.moving_down = true;
break;
default:
break;
}
}
void Game::mousemove_event(GUI::MouseEvent& event)
{
float new_paddle_y = event.y() - m_player1_paddle.rect.height() / 2;
new_paddle_y = max(0.0f, new_paddle_y);
new_paddle_y = min(game_height - m_player1_paddle.rect.height(), new_paddle_y);
m_player1_paddle.rect.set_y(new_paddle_y);
}
void Game::reset_ball(int serve_to_player)
{
int position_y_min = (game_width / 2) - 50;
int position_y_max = (game_width / 2) + 50;
int position_y = arc4random() % (position_y_max - position_y_min + 1) + position_y_min;
int position_x = (game_height / 2);
int velocity_y = arc4random() % 3 + 1;
int velocity_x = 5 + (5 - velocity_y);
if (arc4random() % 2)
velocity_y = velocity_y * -1;
if (serve_to_player == 2)
velocity_x = velocity_x * -1;
m_ball = {};
m_ball.position = { position_x, position_y };
m_ball.velocity = { velocity_x, velocity_y };
}
void Game::game_over(int winner)
{
GUI::MessageBox::show(window(), String::formatted("Player {} wins!", winner), "Pong", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OK);
}
void Game::round_over(int winner)
{
stop_timer();
if (winner == 1)
m_player_1_score++;
if (winner == 2)
m_player_2_score++;
if (m_player_1_score == m_score_to_win || m_player_2_score == m_score_to_win) {
game_over(winner);
return;
}
reset_ball(winner);
reset_paddles();
start_timer(16);
}
void Game::calculate_move()
{
if ((m_ball.y() + m_ball.radius) < (m_player2_paddle.rect.y() + (m_player2_paddle.rect.height() / 2))) {
m_player2_paddle.moving_up = true;
m_player2_paddle.moving_down = false;
return;
}
if ((m_ball.y() + m_ball.radius) > (m_player2_paddle.rect.y() + (m_player2_paddle.rect.height() / 2))) {
m_player2_paddle.moving_up = false;
m_player2_paddle.moving_down = true;
return;
}
m_player2_paddle.moving_up = false;
m_player2_paddle.moving_down = false;
}
void Game::tick()
{
auto new_ball = m_ball;
new_ball.position += new_ball.velocity;
if (new_ball.y() < new_ball.radius || new_ball.y() > game_height - new_ball.radius) {
new_ball.position.set_y(m_ball.y());
new_ball.velocity.set_y(new_ball.velocity.y() * -1);
}
if (new_ball.x() < new_ball.radius) {
round_over(1);
return;
}
if (new_ball.x() > (game_width - new_ball.radius)) {
round_over(2);
return;
}
if (new_ball.rect().intersects(m_player1_paddle.rect)) {
new_ball.position.set_x(m_ball.x());
new_ball.velocity.set_x(new_ball.velocity.x() * -1);
float distance_to_middle_of_paddle = new_ball.y() - m_player1_paddle.rect.center().y();
float relative_impact_point = distance_to_middle_of_paddle / m_player1_paddle.rect.height();
new_ball.velocity.set_y(relative_impact_point * 7);
}
if (new_ball.rect().intersects(m_player2_paddle.rect)) {
new_ball.position.set_x(m_ball.x());
new_ball.velocity.set_x(new_ball.velocity.x() * -1);
float distance_to_middle_of_paddle = new_ball.y() - m_player2_paddle.rect.center().y();
float relative_impact_point = distance_to_middle_of_paddle / m_player2_paddle.rect.height();
new_ball.velocity.set_y(relative_impact_point * 7);
}
if (m_player1_paddle.moving_up) {
m_player1_paddle.rect.set_y(max(0.0f, m_player1_paddle.rect.y() - m_player1_paddle.speed));
}
if (m_player1_paddle.moving_down) {
m_player1_paddle.rect.set_y(min(game_height - m_player1_paddle.rect.height(), m_player1_paddle.rect.y() + m_player1_paddle.speed));
}
calculate_move();
if (m_player2_paddle.moving_up) {
m_player2_paddle.rect.set_y(max(0.0f, m_player2_paddle.rect.y() - m_player2_paddle.speed));
}
if (m_player2_paddle.moving_down) {
m_player2_paddle.rect.set_y(min(game_height - m_player2_paddle.rect.height(), m_player2_paddle.rect.y() + m_player2_paddle.speed));
}
m_ball = new_ball;
update();
}
}
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