197 lines
5.8 KiB
Rust
197 lines
5.8 KiB
Rust
use iced::widget::canvas::{self, Path, Stroke, Text};
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use iced::{
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executor, keyboard, time, Application, Color, Command, Element, Length, Point, Rectangle,
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Settings, Size, Subscription,
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};
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use iced_native::{event, subscription, Event};
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use tetris_logic::{BlockGrid, MoveDirection, Tetromino};
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fn main() -> iced::Result {
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Tetris::run(Settings::default())
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}
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struct Tetris {
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background_cache: canvas::Cache,
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blocks: BlockGrid,
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ticks: usize,
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paused: bool,
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lines_removed: u32,
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}
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impl Tetris {
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fn new() -> Tetris {
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Tetris {
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background_cache: canvas::Cache::default(),
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blocks: BlockGrid::new(),
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ticks: 0,
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paused: false,
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lines_removed: 0,
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}
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}
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}
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impl Application for Tetris {
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type Executor = executor::Default;
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type Message = Message;
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type Flags = ();
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fn new(_flags: ()) -> (Self, Command<Message>) {
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(Tetris::new(), Command::none())
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}
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fn title(&self) -> String {
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String::from("Tetris - Iced")
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}
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fn update(&mut self, message: Self::Message) -> Command<Message> {
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match message {
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Message::Pause => self.paused = !self.paused,
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Message::Tick(_) => {
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if !self.paused {
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self.ticks += 1
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}
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}
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Message::Up => {
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self.blocks.rotate_active_piece();
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}
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Message::Down => {
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self.blocks.move_active_piece(MoveDirection::HardDrop);
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}
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Message::Left => {
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self.blocks.move_active_piece(MoveDirection::Left);
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}
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Message::Right => {
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self.blocks.move_active_piece(MoveDirection::Right);
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}
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};
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if self.blocks.piece_currently_active() {
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if self.ticks % 10 == 0 && !self.paused {
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self.blocks.move_active_piece(MoveDirection::SoftDrop);
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}
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} else {
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let piece: Tetromino = rand::random();
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self.blocks.drop_piece(piece);
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}
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let lines_removed = self.blocks.clear_pieces();
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self.lines_removed += lines_removed;
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Command::none()
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}
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fn subscription(&self) -> Subscription<Message> {
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let keyboard_subscription = subscription::events_with(|event, status| {
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if let event::Status::Captured = status {
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return None;
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}
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match event {
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Event::Keyboard(keyboard::Event::KeyPressed { key_code, .. }) => {
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handle_keypress(key_code)
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}
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_ => None,
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}
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});
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let time_subscription = time::every(std::time::Duration::from_millis(50))
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.map(|_| Message::Tick(chrono::Local::now()));
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Subscription::batch([time_subscription, keyboard_subscription])
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}
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fn view(&mut self) -> Element<Self::Message> {
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canvas::Canvas::new(self)
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.width(Length::Fill)
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.height(Length::Fill)
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.into()
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}
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}
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impl<'a> canvas::Program<Message> for Tetris {
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fn draw(&self, bounds: Rectangle, _cursor: canvas::Cursor) -> Vec<canvas::Geometry> {
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let game_width = bounds.width / 3.0;
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let block_length = game_width / 10.0;
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let center = bounds.center();
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let top_left = Point::new(center.x - game_width / 2.0, 0.0);
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let background = self.background_cache.draw(bounds.size(), |frame| {
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let game_size = Size::new(block_length * 10.0, block_length * 20.0);
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let game_bg = Path::rectangle(top_left, game_size);
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frame.fill(&game_bg, Color::BLACK);
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});
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let block_size = Size::new(block_length, block_length);
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let mut frame = canvas::Frame::new(bounds.size());
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for (i, j, tetronimo) in self.blocks.iter() {
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let point = Point::new(
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i as f32 * block_length + top_left.x,
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j as f32 * block_length + top_left.y,
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);
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let block = Path::rectangle(point, block_size);
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let color = tetronimo.color();
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let fill_color = Color::from_rgb8(color.0, color.1, color.2);
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frame.fill(&block, fill_color);
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let stroke_color = Color::from_rgb8(
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color.0.checked_sub(20).unwrap_or(0),
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color.1.checked_sub(20).unwrap_or(0),
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color.2.checked_sub(20).unwrap_or(0),
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);
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let stroke = Stroke {
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width: 3.0,
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color: stroke_color,
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..Stroke::default()
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};
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frame.stroke(&block, stroke);
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}
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let text_color = Color::from_rgb8(255, 30, 30);
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let text_size = 32.0;
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let score = Text {
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content: format!("Lines removed: {}", self.lines_removed),
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position: Point::new(10.0, 30.0),
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color: text_color,
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size: text_size,
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..Default::default()
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};
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frame.fill_text(score);
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if self.paused {
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let paused = Text {
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content: format!("PAUSED"),
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position: Point::new(10.0, 60.0),
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color: text_color,
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size: text_size,
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..Default::default()
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};
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frame.fill_text(paused);
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}
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vec![background, frame.into_geometry()]
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}
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}
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fn handle_keypress(key_code: keyboard::KeyCode) -> Option<Message> {
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use keyboard::KeyCode;
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Some(match key_code {
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KeyCode::Up => Message::Up,
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KeyCode::Down => Message::Down,
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KeyCode::Right => Message::Right,
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KeyCode::Left => Message::Left,
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KeyCode::Space => Message::Pause,
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_ => return None,
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})
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}
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#[derive(Debug)]
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enum Message {
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Up,
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Down,
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Left,
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Right,
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Pause,
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Tick(chrono::DateTime<chrono::Local>),
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}
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