// ParticleEffects System
// Proceduralno generiranje particle efektov
class ParticleEffects {
    constructor(scene) {
        this.scene = scene;
        this.createParticleTextures();
    }

    createParticleTextures() {
        // Blood particle
        if (!this.scene.textures.exists('blood_particle')) {
            const graphics = this.scene.make.graphics({ x: 0, y: 0, add: false });
            graphics.fillStyle(0xff0000, 1);
            graphics.fillCircle(2, 2, 2);
            graphics.generateTexture('blood_particle', 4, 4);
            graphics.destroy();
        }

        // Leaf particle
        if (!this.scene.textures.exists('leaf_particle')) {
            const graphics = this.scene.make.graphics({ x: 0, y: 0, add: false });
            graphics.fillStyle(0x44aa44, 1);
            graphics.fillRect(0, 0, 4, 6);
            graphics.generateTexture('leaf_particle', 4, 6);
            graphics.destroy();
        }

        // Sparkle particle
        if (!this.scene.textures.exists('sparkle_particle')) {
            const graphics = this.scene.make.graphics({ x: 0, y: 0, add: false });
            graphics.fillStyle(0xffff00, 1);
            graphics.fillCircle(2, 2, 2);
            graphics.generateTexture('sparkle_particle', 4, 4);
            graphics.destroy();
        }
    }

    // Blood Splash on damage
    bloodSplash(x, y) {
        const emitter = this.scene.add.particles(x, y, 'blood_particle', {
            speed: { min: 50, max: 150 },
            angle: { min: 0, max: 360 },
            scale: { start: 1, end: 0 },
            lifespan: 500,
            quantity: 8,
            emitting: false
        });

        emitter.setDepth(10000);
        emitter.explode();

        this.scene.time.delayedCall(600, () => emitter.destroy());
    }

    // Falling Leaves ambient effect
    createFallingLeaves() {
        if (!this.scene.settings || this.scene.settings.particles === 'NONE') return;

        const width = this.scene.scale.width;
        const quantity = this.scene.settings.particles === 'LOW' ? 1 : 2;

        const leavesEmitter = this.scene.add.particles(0, -20, 'leaf_particle', {
            x: { min: 0, max: width },
            y: -20,
            speedY: { min: 30, max: 80 },
            speedX: { min: -20, max: 20 },
            quantity: quantity,
            frequency: 2000, // Every 2 seconds
            lifespan: 8000,
            scale: { min: 0.5, max: 1.0 },
            rotation: { min: 0, max: 360 },
            angle: { min: -10, max: 10 },
            alpha: { start: 0.8, end: 0 }
        });

        leavesEmitter.setDepth(-980); // Below UI, above world
        this.leavesEmitter = leavesEmitter;

        return leavesEmitter;
    }

    // Sparkles on item pickup
    sparkle(x, y) {
        const emitter = this.scene.add.particles(x, y, 'sparkle_particle', {
            speed: { min: 20, max: 80 },
            angle: { min: 0, max: 360 },
            scale: { start: 1.5, end: 0 },
            lifespan: 800,
            quantity: 5,
            emitting: false
        });

        emitter.setDepth(10000);
        emitter.explode();

        this.scene.time.delayedCall(900, () => emitter.destroy());
    }

    // Destroy all effects
    destroy() {
        if (this.leavesEmitter) {
            this.leavesEmitter.destroy();
        }
    }
}