Make beach agent a little more normal

Assets/Scripts/BeachAgent.cs

@@ -126,30 +126,56 @@ public class BeachAgent : MonoBehaviour
         }
     }
 
-    void SmoothBeaches(Heightmap heightmap, Texture2D colormap, List<Vector2Int> beaches)
+    void MoveToAdjacentLand(Heightmap heightmap)
+    {
+        List<Vector2Int> adjacency = new List<Vector2Int>();
+        adjacency.Add(new Vector2Int(-1, 0));
+        adjacency.Add(new Vector2Int(1, 0));
+        adjacency.Add(new Vector2Int(0, -1));
+        adjacency.Add(new Vector2Int(0, 1));
+        Shuffle(adjacency);
+
+        for (int i = 0; i < 4; i++)
+        {
+            Vector2Int newPos = pos + adjacency[i];
+            if (heightmap.isLand(newPos))
+            {
+                pos = newPos;
+                return;
+            }
+        }
+    }
+
+    void ExpandBeaches(Heightmap heightmap, Texture2D colormap, List<Vector2Int> beaches)
     {
         foreach (Vector2Int beach in beaches)
         {
             pos = beach;
-            float height = beachHeight;
 
-            for (int x = 0; x < heightmap.getSize(); x++)
+            for (int i = 0; i < 100; i++)
             {
-                for (int y = 0; y < heightmap.getSize(); y++)
-                {
-                    Vector2Int p = new Vector2Int(x, y);
-
-                    float dist = (Vector2Int.Distance(pos, p) / heightmap.getSize()) * Random.Range(8, 12);
-
-                    if (isLand(heightmap, p) && dist < 0.4f)
-                    {
-                        float pixelHeight = heightmap.GetPixel(p.x, p.y);
-                        float newHeight = height;
-                        heightmap.SetPixel(p.x, p.y, newHeight);
-                        colormap.SetPixel(p.x, p.y, new Color(0.8f, 0.8f, 0.4f, 1.0f));
-                    }
-                }
+                MoveToAdjacentLand(heightmap);
+                heightmap.SetPixel(pos.x, pos.y, beachHeight);
+                colormap.SetPixel((int) pos.x, (int) pos.y, new Color(0.8f, 0.8f, 0.4f, 1.0f));
             }
+
+            // for (int x = 0; x < heightmap.getSize(); x++)
+            // {
+            //     for (int y = 0; y < heightmap.getSize(); y++)
+            //     {
+            //         Vector2Int p = new Vector2Int(x, y);
+
+            //         float dist = (Vector2Int.Distance(pos, p) / heightmap.getSize()) * Random.Range(8, 12);
+
+            //         if (isLand(heightmap, p) && dist < 0.4f)
+            //         {
+            //             float pixelHeight = heightmap.GetPixel(p.x, p.y);
+            //             float newHeight = height;
+            //             heightmap.SetPixel(p.x, p.y, newHeight);
+            //             colormap.SetPixel(p.x, p.y, new Color(0.8f, 0.8f, 0.4f, 1.0f));
+            //         }
+            //     }
+            // }
         }
     }
 
@@ -166,13 +192,13 @@ public class BeachAgent : MonoBehaviour
 
             heightmap.SetPixel(pos.x, pos.y, beachHeight);
             List<Vector2Int> beaches = new List<Vector2Int>();
-            for (int i = 0; i < 25; i++)
+            for (int i = 0; i < 200; i++)
             {
                 MoveAlongCoast(heightmap);
                 heightmap.SetPixel(pos.x, pos.y, beachHeight);
                 beaches.Add(pos);
             }
-            SmoothBeaches(heightmap, colormap, beaches);
+            ExpandBeaches(heightmap, colormap, beaches);
         }
     }
 }