# HG changeset patch
# User alys
# Date 2021-04-18 03:25:20
# Node ID d06f5425f7df9f30ce4ad78c19a98364f8d5da47
# Parent  f687e82000f059e7f08b8e53e02733fa7ea897b9

Add culling for trees.

diff --git a/isometric-park-fna/FNAGame.cs b/isometric-park-fna/FNAGame.cs
--- a/isometric-park-fna/FNAGame.cs
+++ b/isometric-park-fna/FNAGame.cs
@@ -478,7 +478,11 @@
 		return ((this.squaresAcross + 1) + ((this.squaresDown + 1) * Tile.TileWidth)) * 10;
 	}
 
-	protected Boolean cull(int gridX, int gridY)
+    protected Boolean cull(int gridX, int gridY)
+    {
+        return cull(gridX, gridY, 0);
+    }
+	protected Boolean cull(int gridX, int gridY, int margin)
 	{
 		int screenX = (gridX - gridY) * Tile.TileSpriteWidth / 2;
 		int screenY = (gridX + gridY) * Tile.TileSpriteHeight / 2;
@@ -486,8 +490,8 @@
 		Vector2 original = Vector2.Transform(new Vector2(screenX, screenY), camera.get_transformation(GraphicsDevice));
 
 		return (!FNAGame.enableCulling ||
-			(MathUtils.Between(original.X, -Tile.TileSpriteWidth, FNAGame.width)
-			&& MathUtils.Between(original.Y, -Tile.TileSpriteHeight, FNAGame.height)));
+			(MathUtils.Between(original.X, -Tile.TileSpriteWidth - margin, FNAGame.width)
+			&& MathUtils.Between(original.Y, -Tile.TileSpriteHeight - margin, FNAGame.height)));
 	}
 
     //Convenience method I'm not super sure about anymore.
@@ -743,7 +747,8 @@
                 for (int j = 0; j < this.simulation.map.MapWidth; j += 1)
                 {
 
-                    if (this.simulation.map.cells[i][j].hasTree)
+                    if (this.simulation.map.cells[i][j].hasTree
+                    && this.cull(i, j))
                     { //until we actually simulate:
                         drawTileAt(i, j, 142, 2);
                         // if ((i + j) % 8 == 0)
@@ -756,7 +761,9 @@
                         // }
                         this.treesDrawn++;
                     }
-                    else if (this.simulation.map.cells[i][j].status == CellStatus.DeadTree) {
+                    else if (this.simulation.map.cells[i][j].status == CellStatus.DeadTree
+                    && this.cull(i, j))
+                    {
                         drawTileAt(i, j, 141, 2);
                         // System.Console.WriteLine(String.Format("Drew Dead Tree at {0},{1}", i, j));
                         this.treesDrawn++;