hakorune/examples/particle_explosion.nyash

// 🌟 パーティクル爆発システム - Everything is Box の美しい実証
// WebCanvasBox + RandomBox + MathBox の完璧な統合

print("🌟 === Particle Explosion System Starting ===")

// デバッグシステム初期化
DEBUG = new DebugBox()
DEBUG.startTracking()

// 🎨 パーティクルBox - 各粒子が独立したBox！
box ParticleBox {
    init { x, y, vx, vy, color, size, life, maxLife, gravity }
    
    ParticleBox(startX, startY) {
        // ランダム生成器
        random = new RandomBox()
        
        // 初期位置
        me.x = startX
        me.y = startY
        
        // ランダム速度（爆発効果）
        angle = random.float() * 6.28318  // 2π
        speed = random.float() * 5.0 + 2.0
        me.vx = speed * new MathBox().cos(angle)
        me.vy = speed * new MathBox().sin(angle) - 3.0  // 上向き初速度
        
        // ランダム色（虹色パーティクル）
        colorChoice = random.integer(1, 6)
        if colorChoice == 1 { me.color = "red" }
        if colorChoice == 2 { me.color = "orange" }
        if colorChoice == 3 { me.color = "yellow" }
        if colorChoice == 4 { me.color = "lime" }
        if colorChoice == 5 { me.color = "cyan" }
        if colorChoice == 6 { me.color = "magenta" }
        
        // パーティクル特性
        me.size = random.float() * 4.0 + 2.0
        me.maxLife = 100
        me.life = me.maxLife
        me.gravity = 0.1
    }
    
    // 物理更新
    update() {
        // 重力適用
        me.vy = me.vy + me.gravity
        
        // 位置更新
        me.x = me.x + me.vx
        me.y = me.y + me.vy
        
        // 空気抵抗
        me.vx = me.vx * 0.99
        me.vy = me.vy * 0.98
        
        // 寿命減少
        me.life = me.life - 1
        
        // サイズも寿命とともに小さく
        ratio = me.life / me.maxLife
        me.size = me.size * 0.995
        
        return me.life > 0
    }
    
    // Canvas描画
    draw(canvas) {
        if me.life > 0 {
            // 透明度計算
            alpha = me.life / me.maxLife
            
            // 円を描画
            canvas.setFillStyle(me.color)
            canvas.beginPath()
            canvas.arc(me.x, me.y, me.size, 0, 6.28318)
            canvas.fill()
            
            // 光るエフェクト（小さい白い点）
            if me.life > me.maxLife * 0.8 {
                canvas.setFillStyle("white")
                canvas.beginPath()
                canvas.arc(me.x, me.y, me.size * 0.3, 0, 6.28318)
                canvas.fill()
            }
        }
    }
    
    isAlive() {
        return me.life > 0
    }
}

// 🎆 パーティクルシステム管理Box
box ParticleSystemBox {
    init { particles, canvas, centerX, centerY, explosionTimer }
    
    ParticleSystemBox(canvasId, width, height) {
        // WebCanvas初期化
        me.canvas = new WebCanvasBox(canvasId, width, height)
        me.particles = new ArrayBox()
        me.centerX = width / 2
        me.centerY = height / 2
        me.explosionTimer = 0
        
        // 背景色設定
        me.canvas.setFillStyle("black")
        me.canvas.fillRect(0, 0, width, height)
        
        DEBUG.trackBox(me, "ParticleSystem")
    }
    
    // 爆発生成
    explode(x, y, count) {
        print("💥 Creating " + count + " particles at (" + x + ", " + y + ")")
        
        i = 0
        loop (i < count) {
            particle = new ParticleBox(x, y)
            me.particles.add(particle)
            DEBUG.trackBox(particle, "Particle_" + i)
            i = i + 1
        }
    }
    
    // フレーム更新
    update() {
        // 背景クリア（トレイル効果用に少し透明）
        me.canvas.setFillStyle("rgba(0,0,0,0.1)")
        me.canvas.fillRect(0, 0, me.canvas.width, me.canvas.height)
        
        // 全パーティクル更新
        aliveParticles = new ArrayBox()
        i = 0
        loop (i < me.particles.size()) {
            particle = me.particles.get(i)
            if particle.update() {
                particle.draw(me.canvas)
                aliveParticles.add(particle)
            }
            i = i + 1
        }
        
        me.particles = aliveParticles
        
        // 自動爆発タイマー
        me.explosionTimer = me.explosionTimer + 1
        if me.explosionTimer > 120 {  // 2秒間隔
            random = new RandomBox()
            explodeX = random.integer(50, me.canvas.width - 50)
            explodeY = random.integer(50, me.canvas.height - 50)
            particleCount = random.integer(15, 30)
            me.explode(explodeX, explodeY, particleCount)
            me.explosionTimer = 0
        }
        
        // 統計表示
        me.canvas.setFillStyle("white")
        me.canvas.fillText("Particles: " + me.particles.size(), 10, 20)
        me.canvas.fillText("Everything is Box!", 10, 40)
    }
    
    // メイン実行ループ
    run(frames) {
        frame = 0
        loop (frame < frames) {
            me.update()
            frame = frame + 1
            
            // フレーム情報
            if frame % 60 == 0 {
                print("🎬 Frame: " + frame + ", Active particles: " + me.particles.size())
            }
        }
    }
}

// 🚀 システム起動！
print("🎨 Creating particle system...")
system = new ParticleSystemBox("particle-canvas", 800, 600)

// 最初の大爆発！
system.explode(400, 300, 50)

print("💥 Initial explosion created!")
print("🌈 Rainbow particles with physics!")
print("✨ Each particle is an independent Box!")

// 自動実行デモ（300フレーム = 約5秒）
print("🎮 Running automatic particle show...")
system.run(300)

// 最終統計
print(DEBUG.memoryReport())
print("🎆 Particle explosion complete!")
print("🐱 Everything is Box - Even explosions are beautiful!")