engine/examples/simple_window/src/main.rs
2025-03-10 13:40:33 +01:00

101 lines
2.6 KiB
Rust

use std::path::Path;
use anyhow::Result;
use ecs::*;
use engine::prelude::*;
use skybox::SkyBox;
fn main() -> Result<()> {
let mut world_builder = World::builder();
Engine::new::<GameState>(EngineCreateInfo::default(), &mut world_builder)?;
world_builder.add_system(GameState::update);
world_builder.resources.insert(GameState::default());
let dir = Path::new("C:/Users/M.Huebner/Downloads/skybox");
// let dir = Path::new("/home/michaelh/Sync/skybox_labeled");
SkyBox::new(
&mut world_builder,
[
dir.join("left.png"),
dir.join("right.png"),
dir.join("front.png"),
dir.join("back.png"),
dir.join("top.png"),
dir.join("bottom.png"),
]
.into_iter(),
)?;
let view = world_builder.resources.get_mut::<Scene>().view_mut();
let camera_control = FreeCameraControl::new(view)?;
world_builder.resources.insert(camera_control);
world_builder.build().run()
}
#[derive(Default)]
enum GameState {
#[default]
Startup,
Game(Game),
}
impl GameState {
fn update(world: &mut World) -> Result<bool> {
let me = world.resources.get_mut_unchecked::<Self>();
match me {
GameState::Startup => *me = GameState::Game(Game),
GameState::Game(game) => game.update(world)?,
}
Ok(true)
}
}
impl EventConsumer for GameState {
fn event(&mut self, world: &mut World, event: EngineEvent<'_>) -> Result<()> {
match self {
GameState::Startup => (),
GameState::Game(game) => game.event(world, event)?,
}
Ok(())
}
}
struct Game;
impl Game {
fn update(&mut self, _world: &mut World) -> Result<()> {
Ok(())
}
fn event(&mut self, world: &mut World, event: EngineEvent<'_>) -> Result<()> {
match event {
EngineEvent::MouseButtonDown(MouseButton::Left) => {
let camera_control = world.resources.get_mut::<FreeCameraControl>();
camera_control.mouse_down();
}
EngineEvent::MouseButtonUp(MouseButton::Left) => {
let camera_control = world.resources.get_mut::<FreeCameraControl>();
camera_control.mouse_release();
}
EngineEvent::MouseMotion(x, y) => {
let mut resources = world.resources.multi_mut();
let scene = resources.get::<Scene>();
let camera_control = resources.get::<FreeCameraControl>();
camera_control.mouse_move(x, y, scene.view_mut())?;
}
_ => (),
}
Ok(())
}
}