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use tetra::graphics::{self, Color, DrawParams, Texture};
use tetra::input::{self, Key};
use tetra::math::Vec2;
use tetra::{Context, Settings, State};
struct GameState {
texture: Texture,
position: Vec2,
}
impl GameState {
fn new(ctx: &mut Context) -> tetra::Result<GameState> {
Ok(GameState {
texture: Texture::new(ctx, "./examples/resources/player.png")?,
position: Vec2::new(32.0, 32.0),
})
}
}
impl State for GameState {
fn update(&mut self, ctx: &mut Context) -> tetra::Result {
if input::is_key_down(ctx, Key::A) {
self.position.x -= 4.0;
}
if input::is_key_down(ctx, Key::D) {
self.position.x += 4.0;
}
if input::is_key_down(ctx, Key::W) {
self.position.y -= 4.0;
}
if input::is_key_down(ctx, Key::S) {
self.position.y += 4.0;
}
let mut pressed = input::get_keys_pressed(ctx).peekable();
if pressed.peek().is_some() {
println!("Keys pressed this tick: {:?}", pressed.collect::<Vec<_>>());
}
let mut released = input::get_keys_released(ctx).peekable();
if released.peek().is_some() {
println!(
"Keys released this tick: {:?}",
released.collect::<Vec<_>>()
);
}
Ok(())
}
fn draw(&mut self, ctx: &mut Context, _dt: f64) -> tetra::Result {
graphics::clear(ctx, Color::rgb(0.769, 0.812, 0.631));
graphics::draw(
ctx,
&self.texture,
DrawParams::new()
.position(self.position)
.origin(Vec2::new(8.0, 8.0))
.scale(Vec2::new(2.0, 2.0)),
);
Ok(())
}
}
fn main() {
tetra::run(
&Settings::new("Keyboard Input", 640, 480).quit_on_escape(true),
GameState::new,
);
}
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