Procedure Level Generator

.cs

public void Initialize(int newWidth, int newHeight)
    {
        Random.InitState(seed + GameManager.Instance.currentLevel);
        foreach (Transform child in transform)
        {
            Destroy(child.gameObject);
        }

        width = newWidth;
        height = newHeight;

        int exitPositionX;
        int exitPositionY;

        bool topBottom;
        if (GameManager.Instance.currentLevel == 0)
        {
            exitPositionX = Random.Range(1, width - 1);
            exitPositionY = height - 1;
            topBottom = true;
        }
        else
        {
            topBottom = Random.Range(0.0f, 1.0f) >= .5f;
            if (topBottom)
            {
                exitPositionX = Random.Range(1, width - 1);
                exitPositionY = Random.Range(0.0f, 1.0f) >= .5f ? 0 : height - 1;
            }
            else
            {
                exitPositionX = Random.Range(0.0f, 1.0f) >= .5f ? 0 : width - 1;
                exitPositionY = Random.Range(1, height - 1);
            }
        }

        for (var x = 0; x < width; x++)
        {
            for (var y = 0; y < height; y++)
            {
                // Outer Walls
                if (x == 0 || x == (width - 1) || y == 0 || y == (height - 1))
                {
                    //Debug.LogWarning($"Trying Exit Spawn: {x}, {y} <- {exitPositionX}, {exitPositionY}");
                    if (x == exitPositionX && y == exitPositionY)
                    {
                        // place exit
                        SpawnAt(exitTile, x, y, topBottom ? 0.0f : 90.0f);
                    }
                    else
                    {
                        SpawnAt(wallTile, x, y, 0.0f);
                    }
                }
                else
                {
                    // Inner Tile Logic
                    SpawnAt(floorTiles[Random.Range(0, floorTiles.Length)], x, y, 0.0f, 0.0f, true);

                    if (Random.Range(0.0f, 1.0f) < enemyChance)
                    {
                        // only spawn enemies after 3rd level
                        if (GameManager.Instance.currentLevel > 1)
                            SpawnAt(enemies[Random.Range(0, enemies.Length)], x, y);
                    }
                    else if (Random.Range(0.0f, 1.0f) < propsChance)
                    {
                        SpawnAt(propTiles[Random.Range(0, propTiles.Length)], x, y);
                    }
                    else
                    {
                        if (Random.Range(0.0f, 1.0f) < woodenStructTileChance)
                        {
                            SpawnAt(woodenStructTile, x, y);
                            if (Random.Range(0.0f, 1.0f) > 0.6f)
                            {
                                SpawnAt(bannerTile, x, y);
                            }
                        }
                        else if (Random.Range(0.0f, 1.0f) < columnChance)
                        {
                            SpawnAt(columnTile, x, y);
                        }
                    }

                    // pickups
                    if (GameManager.Instance.currentLevel > 0)
                        if (Random.Range(0.0f, 1.0f) < pickupChance)
                        {
                            SpawnAt(pickups[Random.Range(0, pickups.Length)], x, y);
                        }
                }
            }
        }

        AstarPath.active.Scan();
    }

    private void SpawnAt(Transform tile, int x, int y, float rotationY = 0.0f, float heightOffset = 0.0f,
        bool force = false)
    {
        // Don't spawn at player spawn
        if (!force && x - width / 2 == 0 && y - height / 2 == 0) return;
        // Debug.LogWarning($"Spawning {tile.name} at {x - width / 2}, {y - height / 2}");
        Instantiate(tile, new Vector3(x - width / 2, heightOffset, y - height / 2), Quaternion.Euler(0, rotationY, 0),
            transform);
    }