69 lines
1.5 KiB
Rust
69 lines
1.5 KiB
Rust
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use glyphon::{Attrs, Buffer, Color, Family, Metrics, Shaping, TextArea, TextBounds};
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use std::time::Instant;
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use crate::{datastructs::RenderState, RenderInput};
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pub(super) struct FpsIndicator {
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buffer: Buffer,
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last_update: Instant,
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update_counter: u32,
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}
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impl FpsIndicator {
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pub fn new(state: &mut RenderState) -> Self {
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let mut buffer = Buffer::new(&mut state.text_font_system, Metrics::new(12.0, 20.0));
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buffer.set_size(
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&mut state.text_font_system,
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state.window_size.width as f32,
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state.window_size.height as f32,
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);
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buffer.shape_until_scroll(&mut state.text_font_system);
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Self {
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buffer,
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last_update: Instant::now(),
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update_counter: 0,
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}
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}
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}
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impl FpsIndicator {
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pub fn update(&mut self, input: &RenderInput, state: &mut RenderState) {
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// Update once every n frames
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if self.update_counter > 0 {
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self.update_counter -= 1;
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return;
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}
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self.update_counter = 100;
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self.buffer.set_text(
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&mut state.text_font_system,
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&format!(
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"Game: {:.02?}\nPhys: {:.02?}\nRender: {:.02?}",
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1.0 / input.timing.galaxy,
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1.0 / input.timing.physics,
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1.0 / (self.last_update.elapsed().as_secs_f32() / 100.0)
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),
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Attrs::new().family(Family::SansSerif),
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Shaping::Basic,
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);
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self.last_update = Instant::now();
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}
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pub fn get_textarea(&self) -> TextArea {
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TextArea {
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buffer: &self.buffer,
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left: 10.0,
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top: 400.0,
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scale: 1.0,
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bounds: TextBounds {
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left: 10,
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top: 400,
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right: 300,
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bottom: 800,
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},
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default_color: Color::rgb(255, 255, 255),
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}
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}
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}
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