From fa210ceace46e5e7e9fddb1116029afb74dd2c46 Mon Sep 17 00:00:00 2001
From: terkhen <terkhen@openttd.org>
Date: Sat, 3 Dec 2011 20:19:33 +0000
Subject: [PATCH] (svn r23402) -Add: Function to check if a TileArea contains a
 tile. (michi_cc)

---
 src/tilearea.cpp    | 19 +++++++++++++++++++
 src/tilearea_type.h |  2 ++
 2 files changed, 21 insertions(+)

diff --git a/src/tilearea.cpp b/src/tilearea.cpp
index 29a164351e..e6efd05593 100644
--- a/src/tilearea.cpp
+++ b/src/tilearea.cpp
@@ -93,6 +93,25 @@ bool TileArea::Intersects(const TileArea &ta) const
 		);
 }
 
+/**
+ * Does this tile area contain a tile?
+ * @param tile Tile to test for.
+ * @return True if the tile is inside the area.
+ */
+bool TileArea::Contains(TileIndex tile) const
+{
+	if (this->w == 0) return false;
+
+	assert(this->w != 0 && this->h != 0);
+
+	uint left   = TileX(this->tile);
+	uint top    = TileY(this->tile);
+	uint tile_x = TileX(tile);
+	uint tile_y = TileY(tile);
+
+	return IsInsideBS(tile_x, left, this->w) && IsInsideBS(tile_y, top, this->h);
+}
+
 /**
  * Clamp the tile area to map borders.
  */
diff --git a/src/tilearea_type.h b/src/tilearea_type.h
index 46a093fc6d..5826ce116f 100644
--- a/src/tilearea_type.h
+++ b/src/tilearea_type.h
@@ -48,6 +48,8 @@ struct TileArea {
 
 	bool Intersects(const TileArea &ta) const;
 
+	bool Contains(TileIndex tile) const;
+
 	void ClampToMap();
 
 	/**