Tile.DigRiver C# (CSharp) Method

	public void DigRiver(River river, int size)
	{
		SetRiverTile (river);
		RiverSize = size;

		if (size == 1) {
			if (Bottom != null) 
			{ 
				Bottom.SetRiverTile (river);
				if (Bottom.Right != null) Bottom.Right.SetRiverTile (river);		
			}
			if (Right != null) Right.SetRiverTile (river);					
		}

		if (size == 2) {
			if (Bottom != null) { 
				Bottom.SetRiverTile (river);
				if (Bottom.Right != null) Bottom.Right.SetRiverTile (river);		
			}
			if (Right != null) {
				Right.SetRiverTile (river);
			}
			if (Top != null) {
				Top.SetRiverTile (river);
				if (Top.Left != null) Top.Left.SetRiverTile (river);
				if (Top.Right != null)Top.Right.SetRiverTile (river);
			}
			if (Left != null) {
				Left.SetRiverTile (river);
				if (Left.Bottom != null) Left.Bottom.SetRiverTile (river);
			}
		}

		if (size == 3) {
			if (Bottom != null) { 
				Bottom.SetRiverTile (river);
				if (Bottom.Right != null) Bottom.Right.SetRiverTile (river);	
				if (Bottom.Bottom != null)
				{
					Bottom.Bottom.SetRiverTile (river);
					if (Bottom.Bottom.Right != null) Bottom.Bottom.Right.SetRiverTile (river);
				}
			}
			if (Right != null) {
				Right.SetRiverTile (river);
				if (Right.Right != null) 
				{
					Right.Right.SetRiverTile (river);
					if (Right.Right.Bottom != null) Right.Right.Bottom.SetRiverTile (river);
				}
			}
			if (Top != null) {
				Top.SetRiverTile (river);
				if (Top.Left != null) Top.Left.SetRiverTile (river);
				if (Top.Right != null)Top.Right.SetRiverTile (river);
			}
			if (Left != null) {
				Left.SetRiverTile (river);
				if (Left.Bottom != null) Left.Bottom.SetRiverTile (river);
			}
		}

		if (size == 4) {

			if (Bottom != null) { 
				Bottom.SetRiverTile (river);
				if (Bottom.Right != null) Bottom.Right.SetRiverTile (river);	
				if (Bottom.Bottom != null)
				{
					Bottom.Bottom.SetRiverTile (river);
					if (Bottom.Bottom.Right != null) Bottom.Bottom.Right.SetRiverTile (river);
				}
			}
			if (Right != null) {
				Right.SetRiverTile (river);
				if (Right.Right != null) 
				{
					Right.Right.SetRiverTile (river);
					if (Right.Right.Bottom != null) Right.Right.Bottom.SetRiverTile (river);
				}
			}
			if (Top != null) {
				Top.SetRiverTile (river);
				if (Top.Right != null) { 
					Top.Right.SetRiverTile (river);
					if (Top.Right.Right != null) Top.Right.Right.SetRiverTile (river);
				}
				if (Top.Top != null)
				{
					Top.Top.SetRiverTile (river);
					if (Top.Top.Right != null) Top.Top.Right.SetRiverTile (river);
				}
			}
			if (Left != null) {
				Left.SetRiverTile (river);
				if (Left.Bottom != null) {
					Left.Bottom.SetRiverTile (river);
					if (Left.Bottom.Bottom != null) Left.Bottom.Bottom.SetRiverTile (river);
				}

				if (Left.Left != null) {
					Left.Left.SetRiverTile (river);
					if (Left.Left.Bottom != null) Left.Left.Bottom.SetRiverTile (river);
					if (Left.Left.Top != null) Left.Left.Top.SetRiverTile (river);
				}

				if (Left.Top != null)
				{
					Left.Top.SetRiverTile (river);
					if (Left.Top.Top != null) Left.Top.Top.SetRiverTile (river);
				}
			}
		}	
	}

    // Dig river
    private void DigRiver(River river)
    {
        int counter = 0;

        // How wide are we digging this river?
        int size = UnityEngine.Random.Range(1, 5);

        river.Length = river.Tiles.Count;

        // randomize size change
        int two   = river.Length / 2;
        int three = two / 2;
        int four  = three / 2;
        int five  = four / 2;

        int twomin   = two / 3;
        int threemin = three / 3;
        int fourmin  = four / 3;
        int fivemin  = five / 3;

        // randomize lenght of each size
        int count1 = UnityEngine.Random.Range(fivemin, five);

        if (size < 4)
        {
            count1 = 0;
        }
        int count2 = count1 + UnityEngine.Random.Range(fourmin, four);

        if (size < 3)
        {
            count2 = 0;
            count1 = 0;
        }
        int count3 = count2 + UnityEngine.Random.Range(threemin, three);

        if (size < 2)
        {
            count3 = 0;
            count2 = 0;
            count1 = 0;
        }
        int count4 = count3 + UnityEngine.Random.Range(twomin, two);

        // Make sure we are not digging past the river path
        if (count4 > river.Length)
        {
            int extra = count4 - river.Length;
            while (extra > 0)
            {
                if (count1 > 0)
                {
                    count1--; count2--; count3--; count4--; extra--;
                }
                else if (count2 > 0)
                {
                    count2--; count3--; count4--; extra--;
                }
                else if (count3 > 0)
                {
                    count3--; count4--; extra--;
                }
                else if (count4 > 0)
                {
                    count4--; extra--;
                }
            }
        }

        // Dig it out
        for (int i = river.Tiles.Count - 1; i >= 0; i--)
        {
            Tile t = river.Tiles[i];

            if (counter < count1)
            {
                t.DigRiver(river, 4);
            }
            else if (counter < count2)
            {
                t.DigRiver(river, 3);
            }
            else if (counter < count3)
            {
                t.DigRiver(river, 2);
            }
            else if (counter < count4)
            {
                t.DigRiver(river, 1);
            }
            else
            {
                t.DigRiver(river, 0);
            }
            counter++;
        }
    }