Perisai

Pelajaran 15 dari 20 dalam kursus Game Unity: Sky Lanes di Coddy.

Power-up kedua adalah perisai: perisai ini dapat menahan satu serangan. Pelari bersinar biru saat memilikinya.

if (shield)
{
    shield = false;
    Destroy(other.gameObject);
    return;
}
game.GameOver();

Warna pelari adalah warna materialnya, GetComponent<Renderer>().material.color. Pertahankan warna awalnya, lalu pilih warna biru atau warna itu setiap frame.

Tantangan

Mudah

Di Runner, tambahkan public bool shield;, private Renderer body;, dan private Color color;; di Start, tetapkan body = GetComponent<Renderer>(); dan color = body.material.color;.
Saat menabrak rintangan ketika perisai aktif, gunakan perisai itu dan hancurkan rintangannya seperti di atas.
Tag Shield menetapkan shield = true dan menghancurkan item yang diambil.
Di akhir Update: body.material.color = shield ? new Color(0.3f, 0.9f, 1f) : color;.
Di Road, tambahkan shieldPrefab; setelah magnet, tempatkan perisai dengan cara yang sama dalam else if (roll < 0.11f).

Coba sendiri

using UnityEngine;

public class Runner : MonoBehaviour
{
    public float laneWidth = 2.5f;
    public float laneSpeed = 16f;
    public float jumpHeight = 1.6f;
    public float gravity = -40f;
    public float slideTime = 0.7f;
    public float magnetTime = 8f;

    public int lane;
    public float magnet;

    private CharacterController controller;
    private GameManager game;
    private float fallSpeed;
    private float slide;

    void Start()
    {
        controller = GetComponent<CharacterController>();
        game = FindFirstObjectByType<GameManager>();
    }

    void Update()
    {
        if (!game.over)
        {
            if (Input.GetKeyDown(KeyCode.A) || Input.GetKeyDown(KeyCode.LeftArrow)) lane = Mathf.Max(-1, lane - 1);
            if (Input.GetKeyDown(KeyCode.D) || Input.GetKeyDown(KeyCode.RightArrow)) lane = Mathf.Min(1, lane + 1);
            bool jump = Input.GetKeyDown(KeyCode.W) || Input.GetKeyDown(KeyCode.UpArrow) || Input.GetKeyDown(KeyCode.Space);
            if (jump && controller.isGrounded)
            {
                fallSpeed = Mathf.Sqrt(jumpHeight * -2f * gravity);
                StopSlide();
            }
            if ((Input.GetKeyDown(KeyCode.S) || Input.GetKeyDown(KeyCode.DownArrow)) && controller.isGrounded)
            {
                slide = slideTime;
                Resize(0.5f);
            }
        }

        if (slide > 0f)
        {
            slide -= Time.deltaTime;
            if (slide <= 0f) StopSlide();
        }
        if (magnet > 0f) magnet -= Time.deltaTime;

        if (controller.isGrounded && fallSpeed < 0f) fallSpeed = -2f;
        fallSpeed += gravity * Time.deltaTime;

        float targetX = lane * laneWidth;
        float x = Mathf.MoveTowards(transform.position.x, targetX, laneSpeed * Time.deltaTime);
        Vector3 move = new Vector3(x - transform.position.x, fallSpeed * Time.deltaTime, 0f);
        controller.Move(move);
    }

    void StopSlide()
    {
        if (transform.localScale.y < 1f) Resize(1f);
        slide = 0f;
    }

    void Resize(float height)
    {
        controller.enabled = false;
        transform.position += Vector3.up * (height - transform.localScale.y);
        transform.localScale = new Vector3(1f, height, 1f);
        controller.enabled = true;
    }

    void OnTriggerEnter(Collider other)
    {
        if (game.over) return;
        if (other.CompareTag("Obstacle"))
        {
            game.GameOver();
        }
        else if (other.CompareTag("Coin"))
        {
            game.AddCoin();
            Destroy(other.gameObject);
        }
        else if (other.CompareTag("Magnet"))
        {
            magnet = magnetTime;
            Destroy(other.gameObject);
        }
    }
}