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|
use std::{
sync::RwLock,
time::{Duration, Instant},
};
use minifb::Key;
use slog::Logger;
use synchronoise::SignalEvent;
use crate::{
camera::Camera,
config::Config,
error::TracerError,
image::Image,
image_action::ImageAction,
key_inputs::{KeyCallback, KeyEvent, KeyInputs},
renderer::{RenderData, Renderer},
scene::Scene,
terminal::Terminal,
};
use super::{create_screen_buffer, SceneController, SceneData};
pub struct InteractiveScene<'renderer, 'action> {
screen_buffer: RwLock<Vec<u32>>,
preview_buffer: RwLock<Vec<u32>>,
camera_speed: f64,
render_image_event: SignalEvent,
buffer_updated: SignalEvent,
stop_event: SignalEvent,
log: Logger,
term: Terminal,
image_action: &'action dyn ImageAction,
config: Config,
scene: Scene,
camera: RwLock<Camera>,
image: Image,
renderer: &'renderer dyn Renderer,
renderer_preview: &'renderer dyn Renderer,
}
impl<'renderer, 'action> InteractiveScene<'renderer, 'action> {
pub fn new(scene_data: SceneData, camera_speed: f64) -> Self {
Self {
screen_buffer: RwLock::new(create_screen_buffer(&scene_data.image)),
preview_buffer: RwLock::new(create_screen_buffer(&scene_data.image)),
camera_speed,
render_image_event: SignalEvent::manual(false),
buffer_updated: SignalEvent::manual(false),
stop_event: SignalEvent::manual(false),
log: scene_data.log,
term: scene_data.term,
image_action: (&scene_data.config.image_action).into(),
scene: scene_data.scene,
camera: RwLock::new(scene_data.camera),
image: scene_data.image,
renderer: (&scene_data.config.renderer).into(),
renderer_preview: (&scene_data.config.preview_renderer).into(),
config: scene_data.config,
}
}
}
impl<'renderer, 'action> SceneController for InteractiveScene<'renderer, 'action> {
fn get_inputs(&self) -> Vec<KeyCallback> {
vec![
KeyInputs::input(KeyEvent::Release, Key::R, |_| {
self.render_image_event.signal();
Ok(())
}),
KeyInputs::input(KeyEvent::Down, Key::W, |dt| {
self.camera
.write()
.map_err(|e| TracerError::KeyError(e.to_string()))
.map(|mut cam| {
cam.go_forward(-dt * self.camera_speed);
})
}),
KeyInputs::input(KeyEvent::Down, Key::S, |dt| {
self.camera
.write()
.map_err(|e| TracerError::KeyError(e.to_string()))
.map(|mut cam| {
cam.go_forward(dt * self.camera_speed);
})
}),
KeyInputs::input(KeyEvent::Down, Key::A, |dt| {
self.camera
.write()
.map_err(|e| TracerError::KeyError(e.to_string()))
.map(|mut cam| {
cam.go_right(-dt * self.camera_speed);
})
}),
KeyInputs::input(KeyEvent::Down, Key::D, |dt| {
self.camera
.write()
.map_err(|e| TracerError::KeyError(e.to_string()))
.map(|mut cam| {
cam.go_right(dt * self.camera_speed);
})
}),
]
}
fn get_buffer(&self) -> Result<Option<Vec<u32>>, TracerError> {
self.buffer_updated
.wait_timeout(Duration::from_secs(0))
.then_some(|| ())
.map_or(Ok(None), |_| {
self.screen_buffer
.read()
.map_err(|e| TracerError::FailedToAcquireLock(e.to_string()))
.map(|v| Some(v.to_owned()))
})
}
fn render(&self) -> Result<(), TracerError> {
self.render_image_event
.wait_timeout(Duration::from_secs(0))
.then_some(|| ())
.map_or_else(
|| {
// Render preview
self.render_image_event.reset();
// We do not want partial screen updates for the preview.
// Which is why we send in a different buffer.
self.renderer_preview
.render(RenderData {
buffer: &self.preview_buffer,
camera: &self.camera,
image: &self.image,
scene: &self.scene,
config: &self.config,
cancel_event: None,
buffer_updated: None,
})
.and_then(|_| {
self.screen_buffer
.write()
.map_err(|e| TracerError::FailedToAcquireLock(e.to_string()))
})
.and_then(|w_buffer| {
self.preview_buffer
.read()
.map_err(|e| TracerError::FailedToAcquireLock(e.to_string()))
.map(|r_buffer| (r_buffer, w_buffer))
})
.map(|(r_buffer, mut w_buffer)| {
// For the preview we want the complete image
// result before signaling the image is done.
*w_buffer = r_buffer.to_owned();
self.buffer_updated.signal();
})
},
|_| {
let render_time = Instant::now();
self.render_image_event.reset();
// When we render the final image we want partial
// updates to the screen buffer. We send in our
// original screen_buffer and the buffer_updated
// signal. This will ensure that the window will
// get updated with a new buffer as soon as a
// thread finishes writing a block and we get
// partial updates of the rendered image.
self.renderer
.render(RenderData {
buffer: &self.screen_buffer,
camera: &self.camera,
image: &self.image,
scene: &self.scene,
config: &self.config,
cancel_event: Some(&self.render_image_event),
buffer_updated: Some(&self.buffer_updated),
})
.and_then(|_| {
if !self.render_image_event.status() {
info!(
self.log,
"It took {} seconds to render the image.",
Instant::now().duration_since(render_time).as_secs()
);
} else {
info!(self.log, "Image render cancelled.");
}
self.image_action.action(
&self.screen_buffer,
&self.stop_event,
&self.render_image_event,
&self.config,
self.log.new(o!("scope" => "image-action")),
&self.term,
)
})
},
)
}
fn stop(&self) {
// If we are currently rendering anything we try to cancel it
self.render_image_event.signal();
self.stop_event.signal();
}
}
|
