56 lines
1.7 KiB
Rust
56 lines
1.7 KiB
Rust
use winit::event::TouchPhase;
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use crate::texture_set::TextureSet;
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use ggez::{Context, GameResult};
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use crate::common::{KeyState, Rect};
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use crate::engine_constants::EngineConstants;
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struct TouchPoint {
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id: u64,
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position: (f64, f64),
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last_position: (f64, f64),
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}
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pub struct TouchControls {
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points: Vec<TouchPoint>,
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}
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impl TouchControls {
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pub fn new() -> TouchControls {
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TouchControls {
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points: Vec::with_capacity(8),
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}
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}
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pub fn process_winit_event(&mut self, scale: f32, key_state: &mut KeyState, touch: winit::event::Touch) {
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match touch.phase {
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TouchPhase::Started | TouchPhase::Moved => {
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if let Some(point) = self.points.iter_mut().find(|p| p.id == touch.id) {
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point.last_position = point.position;
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point.position = (touch.location.x, touch.location.y);
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} else {
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self.points.push(TouchPoint {
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id: touch.id,
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position: (touch.location.x, touch.location.y),
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last_position: (0.0, 0.0)
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});
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}
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}
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TouchPhase::Ended | TouchPhase::Cancelled => {
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self.points.retain(|p| p.id != touch.id);
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}
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}
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}
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pub fn draw(&self, constants: &EngineConstants, texture_set: &mut TextureSet, ctx: &mut Context) -> GameResult {
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let batch = texture_set.get_or_load_batch(ctx, constants, "Caret")?;
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let rect = Rect::new_size(104, 120, 24, 24);
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for point in self.points.iter() {
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batch.add_rect(point.position.0 as f32 - 12.0, point.position.1 as f32 - 12.0, &rect);
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}
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batch.draw(ctx)?;
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Ok(())
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}
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}
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