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nns2009/10 Minute Game.cs

Created September 20, 2020 00:26
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  1. nns2009 created this gist Sep 20, 2020.
    85 changes: 85 additions & 0 deletions 10 Minute Game.cs
    View file
    Original file line number Diff line number Diff line change
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    // Made from scratch in just 8 minutes 23 seconds
    // Watch this video to see how:
    // https://youtu.be/aP9eKrnyxe4
    // Play online here:
    // https://nns2009.itch.io/just-maze

    using Cinemachine;
    using System.Collections;
    using System.Collections.Generic;
    using System.Linq;
    using UnityEngine;

    public class Game : MonoBehaviour
    {
    public float holep;
    public int w, h, x, y;
    public bool[,] hwalls, vwalls;
    public Transform Level, Player, Goal;
    public GameObject Floor, Wall;
    public CinemachineVirtualCamera cam;

    void Start()
    {
    foreach (Transform child in Level)
    Destroy(child.gameObject);

    hwalls = new bool[w + 1, h];
    vwalls = new bool[w, h + 1];
    var st = new int[w, h];

    void dfs(int x, int y)
    {
    st[x, y] = 1;
    Instantiate(Floor, new Vector3(x, y), Quaternion.identity, Level);

    var dirs = new[]
    {
    (x - 1, y, hwalls, x, y, Vector3.right, 90, KeyCode.A),
    (x + 1, y, hwalls, x + 1, y, Vector3.right, 90, KeyCode.D),
    (x, y - 1, vwalls, x, y, Vector3.up, 0, KeyCode.S),
    (x, y + 1, vwalls, x, y + 1, Vector3.up, 0, KeyCode.W),
    };
    foreach (var (nx, ny, wall, wx, wy, sh, ang, k) in dirs.OrderBy(d => Random.value))
    if (!(0 <= nx && nx < w && 0 <= ny && ny < h) || (st[nx, ny] == 2 && Random.value > holep))
    {
    wall[wx, wy] = true;
    Instantiate(Wall, new Vector3(wx, wy) - sh / 2, Quaternion.Euler(0, 0, ang), Level);
    }
    else if (st[nx, ny] == 0) dfs(nx, ny);
    st[x, y] = 2;
    }
    dfs(0, 0);

    x = Random.Range(0, w);
    y = Random.Range(0, h);
    Player.position = new Vector3(x, y);
    do Goal.position = new Vector3(Random.Range(0, w), Random.Range(0, h));
    while (Vector3.Distance(Player.position, Goal.position) < (w + h) / 4);
    cam.m_Lens.OrthographicSize = Mathf.Pow(w / 3 + h / 2, 0.7f) + 1;
    }

    void Update()
    {
    var dirs = new[]
    {
    (x - 1, y, hwalls, x, y, Vector3.right, 90, KeyCode.A),
    (x + 1, y, hwalls, x + 1, y, Vector3.right, 90, KeyCode.D),
    (x, y - 1, vwalls, x, y, Vector3.up, 0, KeyCode.S),
    (x, y + 1, vwalls, x, y + 1, Vector3.up, 0, KeyCode.W),
    };
    foreach (var (nx, ny, wall, wx, wy, sh, ang, k) in dirs.OrderBy(d => Random.value))
    if (Input.GetKeyDown(k))
    if (wall[wx, wy])
    Player.position = Vector3.Lerp(Player.position, new Vector3(nx, ny), 0.1f);
    else (x, y) = (nx, ny);

    Player.position = Vector3.Lerp(Player.position, new Vector3(x, y), Time.deltaTime * 12);
    if (Vector3.Distance(Player.position, Goal.position) < 0.12f)
    {
    if (Random.Range(0, 5) < 3) w++;
    else h++;
    Start();
    }
    }
    }