From 0f44dfe473ab895b9539ac8b36f9ccf1b2e656c9 Mon Sep 17 00:00:00 2001
From: planetmaker <planetmaker@openttd.org>
Date: Sun, 16 Feb 2014 17:03:58 +0000
Subject: [PATCH] (svn r26344) -Change [FS#5907]: Do not flood shores of type
 MP_TREE needlessly (MJP)

---
 src/water_cmd.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 263731937e..15c57afd56 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -1165,6 +1165,9 @@ void TileLoop_Water(TileIndex tile)
 				/* do not try to flood water tiles - increases performance a lot */
 				if (IsTileType(dest, MP_WATER)) continue;
 
+				/* TREE_GROUND_SHORE is the sign of a previous flood. */
+				if (IsTileType(dest, MP_TREES) && GetTreeGround(dest) == TREE_GROUND_SHORE) continue;
+
 				int z_dest;
 				Slope slope_dest = GetFoundationSlope(dest, &z_dest) & ~SLOPE_HALFTILE_MASK & ~SLOPE_STEEP;
 				if (z_dest > 0) continue;