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#![allow(incomplete_features)]
#![feature(generic_associated_types)]
#[cfg(feature = "vulkan")]
extern crate gfx_backend_vulkan as back;
extern crate gfx_hal as hal;
extern crate nalgebra_glm as na;
#[macro_use]
extern crate legion;
mod culling;
pub mod draw;
pub mod error;
pub mod systems;
mod types;
pub mod window;
use culling::get_visible_faces;
use draw::RenderingContext;
use error::full_error_display;
use error::LockPoisoned;
use legion::world::SubWorld;
use legion::IntoQuery;
use std::sync::mpsc::{Receiver, Sender};
use std::sync::Arc;
use std::sync::RwLock;
pub use window::{UiState, WindowEvent};
use anyhow::{Context, Result};
use log::error;
use stockton_levels::prelude::*;
use stockton_types::components::{CameraSettings, Transform};
use stockton_types::Vector3;
use winit::event_loop::ControlFlow;
use winit::window::Window;
use std::sync::mpsc::channel;
/// Renders a world to a window when you tell it to.
/// Also takes ownership of the window and channels window events to be processed outside winit's event loop.
pub struct Renderer<'a, M: 'static + MinBspFeatures<VulkanSystem>> {
/// All the vulkan stuff
pub(crate) context: RenderingContext<'a, M>,
/// For getting events from the winit event loop
pub window_events: Receiver<WindowEvent>,
/// For updating the control flow of the winit event loop
pub update_control_flow: Arc<RwLock<ControlFlow>>,
}
impl<'a, M: 'static + MinBspFeatures<VulkanSystem>> Renderer<'a, M> {
/// Create a new Renderer.
pub fn new(window: &Window, file: M) -> Result<(Self, Sender<WindowEvent>)> {
let (tx, rx) = channel();
let update_control_flow = Arc::new(RwLock::new(ControlFlow::Poll));
Ok((
Renderer {
context: RenderingContext::new(window, file)?,
window_events: rx,
update_control_flow,
},
tx,
))
}
/// Render a single frame of the given map.
fn render(&mut self, ui: &mut UiState, pos: Vector3) -> Result<()> {
// Get visible faces
let faces = get_visible_faces(
pos,
&*self
.context
.map
.read()
.map_err(|_| LockPoisoned::Map)
.context("Error getting read lock on map")?,
);
// Then draw them
if self.context.draw_vertices(ui, &faces).is_err() {
unsafe { self.context.handle_surface_change()? };
// If it fails twice, then error
self.context.draw_vertices(ui, &faces)?;
}
Ok(())
}
fn resize(&mut self) -> Result<()> {
unsafe { self.context.handle_surface_change() }
}
}
/// A system that just renders the world.
#[system]
#[read_component(Transform)]
#[read_component(CameraSettings)]
pub fn do_render<T: 'static + MinBspFeatures<VulkanSystem>>(
#[resource] renderer: &mut Renderer<'static, T>,
#[resource] ui: &mut UiState,
world: &SubWorld,
) {
let mut query = <(&Transform, &CameraSettings)>::query();
for (transform, _) in query.iter(world) {
if let Err(err) = renderer.render(ui, transform.position) {
error!("{}", full_error_display(err));
}
}
}
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