// Wire to SPECTACLE_COMBO — grows with consecutive hits
eventBus.on(Events.SPECTACLE_COMBO, ({ combo }) => {
    const size = Math.min(32 + combo * 4, 72);
    const text = scene.add
        .text(GAME.WIDTH / 2, GAME.HEIGHT * 0.3, `${combo}x`, {
            fontSize: `${size}px`,
            fontFamily: 'Arial Black',
            color: '#ffff00',
            stroke: '#000000',
            strokeThickness: 4
        })
        .setOrigin(0.5)
        .setScale(1.8)
        .setDepth(400);
    scene.tweens.add({
        targets: text,
        scale: 1,
        y: text.y - 30,
        alpha: 0,
        duration: 700,
        ease: 'Elastic.easeOut',
        onComplete: () => text.destroy()
    });
});

// 60ms physics pause on destruction — makes hits feel powerful
function hitFreeze(scene) {
    scene.physics.world.pause();
    scene.time.delayedCall(60, () => scene.physics.world.resume());
}

// Hue shifts over time in update() — ambient visual energy
let bgHue = 0;
function updateBgHue(delta, bgGraphics) {
    bgHue = (bgHue + delta * 0.02) % 360;
    const color = Phaser.Display.Color.HSLToColor(bgHue / 360, 0.6, 0.15);
    bgGraphics.clear();
    bgGraphics.fillStyle(color.color, 1);
    bgGraphics.fillRect(0, 0, GAME.WIDTH, GAME.HEIGHT);
}

// Additive blend overlay that flashes on score events
const scorePulse = scene.add
    .rectangle(GAME.WIDTH / 2, GAME.HEIGHT / 2, GAME.WIDTH, GAME.HEIGHT, PALETTE.ACCENT, 0)
    .setDepth(-50)
    .setBlendMode(Phaser.BlendModes.ADD);

eventBus.on(Events.SCORE_CHANGED, () => {
    scorePulse.setAlpha(0.15);
    scene.tweens.add({
        targets: scorePulse,
        alpha: 0,
        duration: 300,
        ease: 'Quad.easeOut'
    });
});

// Pop-in: entity appears from scale 0
function popIn(scene, target, delay = 0) {
    target.setScale(0);
    scene.tweens.add({
        targets: target,
        scale: 1,
        duration: 300,
        delay,
        ease: 'Back.easeOut'
    });
}

// Slam-in: entity drops from above with bounce
function slamIn(scene, target, targetY, delay = 0) {
    target.y = -50;
    scene.tweens.add({
        targets: target,
        y: targetY,
        duration: 350,
        delay,
        ease: 'Bounce.easeOut',
        onComplete: () => scene.cameras.main.shake(80, 0.006)
    });
}

// Continuous particle spawn behind the player
const trail = scene.add.particles(0, 0, 'particle', {
    follow: player,
    scale: { start: 0.6, end: 0 },
    alpha: { start: 0.5, end: 0 },
    speed: { min: 5, max: 15 },
    lifespan: 400,
    frequency: 30,
    blendMode: 'ADD',
    tint: PALETTE.ACCENT
});

// Full-screen text slam at milestones (5x, 10x, 25x)
eventBus.on(Events.SPECTACLE_STREAK, ({ streak }) => {
    const labels = { 5: 'ON FIRE!', 10: 'UNSTOPPABLE!', 25: 'LEGENDARY!' };
    const label = labels[streak] || `${streak}x STREAK`;
    const text = scene.add
        .text(GAME.WIDTH / 2, GAME.HEIGHT / 2, label, {
            fontSize: '80px',
            fontFamily: 'Arial Black',
            color: '#ffffff',
            stroke: '#000000',
            strokeThickness: 8
        })
        .setOrigin(0.5)
        .setScale(3)
        .setAlpha(0)
        .setDepth(500);
    scene.tweens.add({
        targets: text,
        scale: 1,
        alpha: 1,
        duration: 300,
        ease: 'Back.easeOut',
        hold: 400,
        yoyo: true,
        onComplete: () => text.destroy()
    });
    scene.cameras.main.shake(200, 0.02);
    emitBurst(scene, GAME.WIDTH / 2, GAME.HEIGHT / 2, 40, PALETTE.HIGHLIGHT);
});

// In Constants.js — spectacle tuning values
export const SPECTACLE = {
    ENTRANCE_FLASH_DURATION: 300,
    ENTRANCE_SLAM_DURATION: 400,
    HIT_FREEZE_MS: 60,
    COMBO_TEXT_BASE_SIZE: 32,
    COMBO_TEXT_MAX_SIZE: 72,
    COMBO_TEXT_GROWTH: 4,
    STREAK_MILESTONES: [5, 10, 25, 50],
    PARTICLE_BURST_MIN: 12,
    PARTICLE_BURST_MAX: 30,
    SCORE_PULSE_ALPHA: 0.15,
    BG_HUE_SPEED: 0.02
};