import * as THREE from 'three';

export class Ball {
    constructor(scene) {
        this.scene = scene;
        this.createBall();
    }

    createBall() {
        const ballGeometry = new THREE.SphereGeometry(0.8, 16, 16);
        const ballMaterial = new THREE.MeshStandardMaterial({ color: 0xffffff });
        this.mesh = new THREE.Mesh(ballGeometry, ballMaterial);
        this.mesh.position.y = 0.8;
        this.mesh.castShadow = true;
        this.mesh.possessedBy = null;
        this.mesh.velocity = new THREE.Vector3();
        this.mesh.lastStealTime = 0;
        this.scene.add(this.mesh);
    }

    update() {
        const possessionDistance = 1 + 0.8 + 0.5; // player radius + ball radius + buffer

        if (this.mesh.possessedBy) {
            const ballOffset = 1.5; // Distance in front of player
            let offset = new THREE.Vector3(ballOffset, 0, 0); // Default offset

            // Ball moves with the player who possesses it
            if (this.mesh.possessedBy.lastVelocity && this.mesh.possessedBy.lastVelocity.lengthSq() > 0) {
                const direction = this.mesh.possessedBy.lastVelocity.clone().normalize();
                offset = direction.multiplyScalar(ballOffset);
            }
            this.mesh.position.copy(this.mesh.possessedBy.position).add(offset);

        } else {
            // Update ball position based on velocity (when not possessed)
            this.mesh.position.add(this.mesh.velocity);
            this.mesh.velocity.multiplyScalar(0.97); // Friction
        }

        // --- Field Boundaries ---
        const fieldWidth = 60;
        const fieldLength = 100;
        const ballRadius = 0.8;

        this.mesh.position.x = Math.max(-fieldWidth / 2 + ballRadius, Math.min(fieldWidth / 2 - ballRadius, this.mesh.position.x));
        this.mesh.position.z = Math.max(-fieldLength / 2 + ballRadius, Math.min(fieldLength / 2 - ballRadius, this.mesh.position.z));


        // --- Force 2D movement on the XZ plane ---
        this.mesh.position.y = 0.8;
        this.mesh.velocity.y = 0;
    }
}