it232Abschied/static/js/particles.js

// Globale Partikel-Liste (muss in state.js bekannt sein oder hier exportiert)
// Wir nutzen die globale Variable 'particles' (fügen wir gleich in state.js hinzu)

class Particle {
    constructor(x, y, type) {
        this.x = x;
        this.y = y;
        this.life = 1.0; // 1.0 = 100% Leben
        this.type = type; // 'dust', 'sparkle', 'explosion'

        // Zufällige Geschwindigkeit
        const angle = Math.random() * Math.PI * 2;
        let speed = Math.random() * 2;

        if (type === 'dust') {
            // Staub fliegt eher nach oben/hinten
            this.vx = -2 + Math.random();
            this.vy = -1 - Math.random();
            this.decay = 0.05; // Verschwindet schnell
            this.color = '#ddd';
            this.size = Math.random() * 4 + 2;
        }
        else if (type === 'sparkle') {
            // Münzen glitzern in alle Richtungen
            speed = Math.random() * 4 + 2;
            this.vx = Math.cos(angle) * speed;
            this.vy = Math.sin(angle) * speed;
            this.decay = 0.03;
            this.color = '#ffcc00';
            this.size = Math.random() * 3 + 1;
        }
        else if (type === 'explosion') {
            // Tod
            speed = Math.random() * 6 + 2;
            this.vx = Math.cos(angle) * speed;
            this.vy = Math.sin(angle) * speed;
            this.decay = 0.02;
            this.color = Math.random() > 0.5 ? '#ff4444' : '#ffaa00';
            this.size = Math.random() * 6 + 3;
        }
    }

    update() {
        this.x += this.vx;
        this.y += this.vy;

        // Physik
        if (this.type !== 'sparkle') this.vy += 0.2; // Schwerkraft für Staub/Explosion

        // Reibung
        this.vx *= 0.95;
        this.vy *= 0.95;

        this.life -= this.decay;
    }

    draw(ctx) {
        ctx.globalAlpha = this.life;
        ctx.fillStyle = this.color;

        // Quadratische Partikel (schneller zu zeichnen)
        ctx.fillRect(this.x, this.y, this.size, this.size);

        ctx.globalAlpha = 1.0;
    }
}

// --- API ---

function spawnParticles(x, y, type, count = 5) {
    for(let i=0; i<count; i++) {
        particles.push(new Particle(x, y, type));
    }
}

function updateParticles() {
    // Rückwärts loopen zum sicheren Löschen
    for (let i = particles.length - 1; i >= 0; i--) {
        particles[i].update();
        if (particles[i].life <= 0) {
            particles.splice(i, 1);
        }
    }
}

function drawParticles() {
    particles.forEach(p => p.draw(ctx));
}