Implement core Canvas Boxes and 5 WASM demos
Co-authored-by: moe-charm <217100418+moe-charm@users.noreply.github.com>
This commit is contained in:
309
src/boxes/canvas_loop_box.rs
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309
src/boxes/canvas_loop_box.rs
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/*!
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* CanvasLoopBox - アニメーションループ管理Box
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*
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* ## 📝 概要
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* ゲームや動的コンテンツのためのアニメーションループを
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* 管理するBox。requestAnimationFrame、フレームレート制御、
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* ループ状態管理を統一的に提供。
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*
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* ## 🛠️ 利用可能メソッド
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*
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* ### 🎮 ループ制御
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* - `start(callback)` - アニメーションループ開始
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* - `stop()` - アニメーションループ停止
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* - `pause()` - アニメーションループ一時停止
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* - `resume()` - アニメーションループ再開
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*
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* ### 📊 フレーム情報
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* - `getFPS()` - 現在のFPS取得
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* - `getFrameCount()` - 総フレーム数取得
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* - `getDeltaTime()` - 前フレームからの経過時間
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* - `setTargetFPS(fps)` - 目標FPS設定
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*
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* ### ⏱️ 時間管理
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* - `getElapsedTime()` - ループ開始からの経過時間
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* - `reset()` - タイマーリセット
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*
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* ## 💡 使用例
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* ```nyash
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* local loop, canvas, ball_x, ball_y
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* loop = new CanvasLoopBox()
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* canvas = new WebCanvasBox("game-canvas", 800, 600)
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* ball_x = 400
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* ball_y = 300
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*
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* // ゲームループ
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* loop.start(function(deltaTime) {
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* // 更新処理
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* ball_x = ball_x + 100 * deltaTime // 100px/秒で移動
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*
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* // 描画処理
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* canvas.clear()
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* canvas.fillCircle(ball_x, ball_y, 20, "red")
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*
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* // FPS表示
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* canvas.fillText("FPS: " + loop.getFPS(), 10, 30, "16px Arial", "black")
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* })
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* ```
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*/
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use crate::box_trait::{NyashBox, StringBox, BoolBox, BoxCore, BoxBase};
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use crate::boxes::TimerBox;
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use std::any::Any;
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#[cfg(target_arch = "wasm32")]
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use wasm_bindgen::prelude::*;
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/// アニメーションループ管理Box
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#[derive(Debug, Clone)]
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pub struct CanvasLoopBox {
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base: BoxBase,
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is_running: bool,
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is_paused: bool,
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frame_count: u64,
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last_frame_time: f64,
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start_time: f64,
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fps: f64,
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target_fps: Option<f64>,
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delta_time: f64,
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timer: TimerBox,
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#[cfg(target_arch = "wasm32")]
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animation_id: Option<i32>,
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}
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impl CanvasLoopBox {
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pub fn new() -> Self {
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let timer = TimerBox::new();
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let current_time = timer.now();
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Self {
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base: BoxBase::new(),
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is_running: false,
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is_paused: false,
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frame_count: 0,
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last_frame_time: current_time,
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start_time: current_time,
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fps: 0.0,
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target_fps: None,
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delta_time: 0.0,
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timer,
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#[cfg(target_arch = "wasm32")]
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animation_id: None,
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}
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}
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/// アニメーションループを開始
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#[cfg(target_arch = "wasm32")]
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pub fn start(&mut self, callback: js_sys::Function) {
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if self.is_running {
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return;
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}
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self.is_running = true;
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self.is_paused = false;
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self.start_time = self.timer.now();
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self.last_frame_time = self.start_time;
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self.frame_count = 0;
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// アニメーションフレーム用のクロージャを作成
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let closure = Closure::wrap(Box::new(move |time: f64| {
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// ここでフレーム処理を実行
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callback.call1(&JsValue::NULL, &JsValue::from_f64(time)).unwrap_or_default();
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}) as Box<dyn FnMut(f64)>);
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let id = self.timer.request_animation_frame(closure.as_ref().unchecked_ref());
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self.animation_id = Some(id);
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closure.forget(); // クロージャの所有権を手放す
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}
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#[cfg(not(target_arch = "wasm32"))]
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/// Non-WASM環境用のダミー実装
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pub fn start(&mut self) {
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println!("CanvasLoopBox: Animation loop not supported in non-WASM environment");
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self.is_running = true;
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}
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/// アニメーションループを停止
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pub fn stop(&mut self) {
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if !self.is_running {
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return;
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}
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self.is_running = false;
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self.is_paused = false;
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#[cfg(target_arch = "wasm32")]
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{
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if let Some(id) = self.animation_id {
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self.timer.cancel_animation_frame(id);
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self.animation_id = None;
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}
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}
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}
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/// アニメーションループを一時停止
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pub fn pause(&mut self) {
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if !self.is_running || self.is_paused {
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return;
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}
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self.is_paused = true;
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#[cfg(target_arch = "wasm32")]
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{
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if let Some(id) = self.animation_id {
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self.timer.cancel_animation_frame(id);
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self.animation_id = None;
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}
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}
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}
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/// アニメーションループを再開
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#[cfg(target_arch = "wasm32")]
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pub fn resume(&mut self, callback: js_sys::Function) {
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if !self.is_running || !self.is_paused {
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return;
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}
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self.is_paused = false;
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self.last_frame_time = self.timer.now(); // 時間をリセット
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let closure = Closure::wrap(Box::new(move |time: f64| {
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callback.call1(&JsValue::NULL, &JsValue::from_f64(time)).unwrap_or_default();
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}) as Box<dyn FnMut(f64)>);
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let id = self.timer.request_animation_frame(closure.as_ref().unchecked_ref());
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self.animation_id = Some(id);
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closure.forget();
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}
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#[cfg(not(target_arch = "wasm32"))]
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pub fn resume(&mut self) {
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println!("CanvasLoopBox: Resume not supported in non-WASM environment");
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self.is_paused = false;
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}
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/// フレーム更新処理(各フレームで呼び出される)
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pub fn update_frame(&mut self) {
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if !self.is_running || self.is_paused {
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return;
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}
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let current_time = self.timer.now();
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self.delta_time = (current_time - self.last_frame_time) / 1000.0; // 秒単位
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self.last_frame_time = current_time;
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self.frame_count += 1;
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// FPS計算(1秒間の移動平均)
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if self.delta_time > 0.0 {
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let instant_fps = 1.0 / self.delta_time;
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// 簡単な移動平均でFPSを滑らかにする
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self.fps = self.fps * 0.9 + instant_fps * 0.1;
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}
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}
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/// 現在のFPSを取得
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pub fn get_fps(&self) -> f64 {
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self.fps
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}
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/// 総フレーム数を取得
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pub fn get_frame_count(&self) -> u64 {
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self.frame_count
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}
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/// 前フレームからの経過時間(秒)を取得
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pub fn get_delta_time(&self) -> f64 {
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self.delta_time
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}
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/// ループ開始からの経過時間(秒)を取得
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pub fn get_elapsed_time(&self) -> f64 {
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if self.is_running {
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(self.timer.now() - self.start_time) / 1000.0
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} else {
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0.0
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}
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}
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/// 目標FPSを設定
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pub fn set_target_fps(&mut self, fps: f64) {
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if fps > 0.0 {
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self.target_fps = Some(fps);
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} else {
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self.target_fps = None;
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}
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}
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/// 実行状態を確認
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pub fn is_running(&self) -> bool {
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self.is_running
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}
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/// 一時停止状態を確認
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pub fn is_paused(&self) -> bool {
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self.is_paused
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}
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/// タイマーをリセット
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pub fn reset(&mut self) {
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let current_time = self.timer.now();
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self.start_time = current_time;
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self.last_frame_time = current_time;
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self.frame_count = 0;
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self.fps = 0.0;
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self.delta_time = 0.0;
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}
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}
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impl BoxCore for CanvasLoopBox {
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fn box_id(&self) -> u64 {
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self.base.id
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}
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fn parent_type_id(&self) -> Option<std::any::TypeId> {
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self.base.parent_type_id
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}
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fn fmt_box(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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write!(f, "CanvasLoopBox(running={}, fps={:.1})", self.is_running, self.fps)
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}
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fn as_any(&self) -> &dyn Any {
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self
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}
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fn as_any_mut(&mut self) -> &mut dyn Any {
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self
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}
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}
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impl NyashBox for CanvasLoopBox {
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fn clone_box(&self) -> Box<dyn NyashBox> {
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Box::new(self.clone())
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}
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fn to_string_box(&self) -> StringBox {
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StringBox::new(format!("CanvasLoopBox(running={}, fps={:.1})", self.is_running, self.fps))
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}
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fn type_name(&self) -> &'static str {
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"CanvasLoopBox"
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}
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fn equals(&self, other: &dyn NyashBox) -> BoolBox {
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if let Some(other_loop) = other.as_any().downcast_ref::<CanvasLoopBox>() {
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BoolBox::new(self.base.id == other_loop.base.id)
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} else {
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BoolBox::new(false)
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}
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}
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}
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impl std::fmt::Display for CanvasLoopBox {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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self.fmt_box(f)
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}
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}
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