fennel_engine/
runtime.rs

1use std::sync::{Arc, Mutex};
2
3use fennel_core::graphics::HasWindow;
4use specs::{Dispatcher, DispatcherBuilder, WorldExt};
5
6use crate::components::sprite::{RenderingSystem, Sprite};
7
8pub struct Runtime {
9    pub window: fennel_core::Window,
10    pub world: specs::World,
11    pub dispatcher: Dispatcher<'static, 'static>,
12}
13
14#[derive(Default, Debug)]
15pub struct RuntimeBuilder {
16    name: &'static str,
17    dimensions: (u32, u32),
18}
19
20impl HasWindow for Runtime {
21    fn window_mut(&mut self) -> &mut fennel_core::Window {
22        &mut self.window
23    }
24}
25
26impl Runtime {
27    pub async fn run<H>(&mut self, game_state: H) -> anyhow::Result<()>
28    where
29        H: fennel_common::events::WindowEventHandler<Host = Runtime> + Send + Sync + 'static,
30    {
31        fennel_core::events::run(self, game_state).await;
32        Ok(())
33    }
34}
35
36impl RuntimeBuilder {
37    pub fn new() -> RuntimeBuilder {
38        RuntimeBuilder {
39            name: "",
40            dimensions: (100, 100),
41        }
42    }
43
44    pub fn name(mut self, name: &'static str) -> RuntimeBuilder {
45        self.name = name;
46        self
47    }
48
49    pub fn dimensions(mut self, dimensions: (u32, u32)) -> RuntimeBuilder {
50        self.dimensions = dimensions;
51        self
52    }
53
54    pub fn build(&self) -> anyhow::Result<Runtime> {
55        let resource_manager = Arc::new(Mutex::new(fennel_core::resources::ResourceManager::new()));
56        let graphics = fennel_core::graphics::Graphics::new(
57            self.name.to_string(),
58            self.dimensions,
59            resource_manager.clone(),
60        );
61        let window = fennel_core::Window::new(
62            graphics.expect("failed to initialize graphics"),
63            resource_manager,
64        );
65        let mut world = specs::World::new();
66        let mut dispatcher = DispatcherBuilder::new()
67            .with(RenderingSystem, "rendering_system", &[])
68            .build();
69        dispatcher.setup(&mut world);
70        world.register::<Sprite>();
71
72        Ok(Runtime {
73            window,
74            world,
75            dispatcher,
76        })
77    }
78}
fennel_engine/runtime.rs

fennel_engine/
runtime.rs
