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use std::thread;
use crate::settings::Settings;
use crate::types::{BoundingBox, Dimensions, Position};
use std::io::{self, StdinLock, StdoutLock, Write};
use termion::cursor;
use termion::input::Keys;
use termion::input::TermRead;
use termion::raw::RawTerminal;
use crate::display;
use crate::types::command::Command;
/// The full state of a running Game
pub struct Game<'a> {
settings: Settings,
/// The box describing the viewport. Generally the size of the terminal, and
/// positioned at 0, 0
viewport: BoundingBox,
/// An iterator on keypresses from the user
keys: Keys<StdinLock<'a>>,
stdout: RawTerminal<StdoutLock<'a>>,
/// The position of the character
character: Position,
}
impl<'a> Game<'a> {
pub fn new(
settings: Settings,
stdout: RawTerminal<StdoutLock<'a>>,
stdin: StdinLock<'a>,
w: u16,
h: u16,
) -> Game<'a> {
Game {
settings: settings,
viewport: BoundingBox::at_origin(Dimensions { w, h }),
keys: stdin.keys(),
stdout: stdout,
character: Position { x: 1, y: 1 },
}
}
/// Returns true if there's a collision in the game at the given Position
fn collision_at(&self, pos: Position) -> bool {
!pos.within(self.viewport.inner())
}
/// Run the game
pub fn run(mut self) {
info!("Running game");
write!(
self,
"{}{}@{}",
display::make_box(
display::BoxStyle::Thin,
self.viewport.dimensions
),
cursor::Goto(2, 2),
cursor::Left(1),
)
.unwrap();
self.flush().unwrap();
loop {
let mut character_moved = false;
match Command::from_key(self.keys.next().unwrap().unwrap()) {
Some(Command::Quit) => {
info!("Quitting game due to user request");
break;
}
Some(Command::Move(direction)) => {
let new_pos = self.character + direction;
if !self.collision_at(new_pos) {
self.character = new_pos;
character_moved = true;
}
}
_ => (),
}
if character_moved {
debug!("char: {:?}", self.character);
write!(
self,
" {}@{}",
cursor::Goto(self.character.x + 1, self.character.y + 1,),
cursor::Left(1)
)
.unwrap();
}
self.flush().unwrap();
}
}
}
impl<'a> Drop for Game<'a> {
fn drop(&mut self) {
display::clear(self).unwrap();
}
}
impl<'a> Write for Game<'a> {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
self.stdout.write(buf)
}
fn flush(&mut self) -> io::Result<()> {
self.stdout.flush()
}
fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
self.stdout.write_all(buf)
}
}
|
