Initialize with OpenTTD 1.9.3

src/animated_tile.cpp

@@ -0,0 +1,79 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file animated_tile.cpp Everything related to animated tiles. */
+
+#include "stdafx.h"
+#include "core/alloc_func.hpp"
+#include "core/smallvec_type.hpp"
+#include "tile_cmd.h"
+#include "viewport_func.h"
+#include "framerate_type.h"
+
+#include "safeguards.h"
+
+/** The table/list with animated tiles. */
+SmallVector<TileIndex, 256> _animated_tiles;
+
+/**
+ * Removes the given tile from the animated tile table.
+ * @param tile the tile to remove
+ */
+void DeleteAnimatedTile(TileIndex tile)
+{
+	TileIndex *to_remove = _animated_tiles.Find(tile);
+	if (to_remove != _animated_tiles.End()) {
+		/* The order of the remaining elements must stay the same, otherwise the animation loop may miss a tile. */
+		_animated_tiles.ErasePreservingOrder(to_remove);
+		MarkTileDirtyByTile(tile);
+	}
+}
+
+/**
+ * Add the given tile to the animated tile table (if it does not exist
+ * on that table yet). Also increases the size of the table if necessary.
+ * @param tile the tile to make animated
+ */
+void AddAnimatedTile(TileIndex tile)
+{
+	MarkTileDirtyByTile(tile);
+	_animated_tiles.Include(tile);
+}
+
+/**
+ * Animate all tiles in the animated tile list, i.e.\ call AnimateTile on them.
+ */
+void AnimateAnimatedTiles()
+{
+	PerformanceAccumulator framerate(PFE_GL_LANDSCAPE);
+
+	const TileIndex *ti = _animated_tiles.Begin();
+	while (ti < _animated_tiles.End()) {
+		const TileIndex curr = *ti;
+		AnimateTile(curr);
+		/* During the AnimateTile call, DeleteAnimatedTile could have been called,
+		 * deleting an element we've already processed and pushing the rest one
+		 * slot to the left. We can detect this by checking whether the index
+		 * in the current slot has changed - if it has, an element has been deleted,
+		 * and we should process the current slot again instead of going forward.
+		 * NOTE: this will still break if more than one animated tile is being
+		 *       deleted during the same AnimateTile call, but no code seems to
+		 *       be doing this anyway.
+		 */
+		if (*ti == curr) ++ti;
+	}
+}
+
+/**
+ * Initialize all animated tile variables to some known begin point
+ */
+void InitializeAnimatedTiles()
+{
+	_animated_tiles.Clear();
+}