OpenTTD Source: src/animated_tile.cpp Source File

OpenTTD Source 13.2.1

animated_tile.cpp
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1 /*
2 * This file is part of OpenTTD.
3 * 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.
4 * 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.
5 * 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/>.
6 */
7
10 #include "stdafx.h"
11 #include "core/alloc_func.hpp"
12 #include "core/smallvec_type.hpp"
13 #include "tile_cmd.h"
14 #include "viewport_func.h"
15 #include "framerate_type.h"
16
17 #include "safeguards.h"
18
20 std::vector<TileIndex> _animated_tiles;
21
26 void DeleteAnimatedTile(TileIndex tile)
27 {
28 auto to_remove = std::find(_animated_tiles.begin(), _animated_tiles.end(), tile);
29 if (to_remove != _animated_tiles.end()) {
30 /* The order of the remaining elements must stay the same, otherwise the animation loop may miss a tile. */
31 _animated_tiles.erase(to_remove);
32 MarkTileDirtyByTile(tile);
33 }
34 }
35
41 void AddAnimatedTile(TileIndex tile)
42 {
43 MarkTileDirtyByTile(tile);
44 include(_animated_tiles, tile);
45 }
46
50 void AnimateAnimatedTiles()
51 {
52 PerformanceAccumulator framerate(PFE_GL_LANDSCAPE);
53
54 const TileIndex *ti = _animated_tiles.data();
55 while (ti < _animated_tiles.data() + _animated_tiles.size()) {
56 const TileIndex curr = *ti;
57 AnimateTile(curr);
58 /* During the AnimateTile call, DeleteAnimatedTile could have been called,
59 * deleting an element we've already processed and pushing the rest one
60 * slot to the left. We can detect this by checking whether the index
61 * in the current slot has changed - if it has, an element has been deleted,
62 * and we should process the current slot again instead of going forward.
63 * NOTE: this will still break if more than one animated tile is being
64 * deleted during the same AnimateTile call, but no code seems to
65 * be doing this anyway.
66 */
67 if (*ti == curr) ++ti;
68 }
69 }
70
74 void InitializeAnimatedTiles()
75 {
76 _animated_tiles.clear();
77 }
smallvec_type.hpp
include
bool include(std::vector< T > &vec, const T &item)
Helper function to append an item to a vector if it is not already contained Consider using std::set,...
Definition: smallvec_type.hpp:27
TileIndex
The index/ID of a Tile.
Definition: tile_type.h:85
_animated_tiles
std::vector< TileIndex > _animated_tiles
The table/list with animated tiles.
Definition: animated_tile.cpp:20
PFE_GL_LANDSCAPE
@ PFE_GL_LANDSCAPE
Time spent processing other world features.
Definition: framerate_type.h:55
tile_cmd.h
safeguards.h
stdafx.h
viewport_func.h
PerformanceAccumulator
RAII class for measuring multi-step elements of performance.
Definition: framerate_type.h:114
DeleteAnimatedTile
void DeleteAnimatedTile(TileIndex tile)
Removes the given tile from the animated tile table.
Definition: animated_tile.cpp:26
alloc_func.hpp
framerate_type.h
MarkTileDirtyByTile
void MarkTileDirtyByTile(TileIndex tile, int bridge_level_offset, int tile_height_override)
Mark a tile given by its index dirty for repaint.
Definition: viewport.cpp:1998
AnimateAnimatedTiles
void AnimateAnimatedTiles()
Animate all tiles in the animated tile list, i.e. call AnimateTile on them.
Definition: animated_tile.cpp:50
InitializeAnimatedTiles
void InitializeAnimatedTiles()
Initialize all animated tile variables to some known begin point.
Definition: animated_tile.cpp:74
AddAnimatedTile
void AddAnimatedTile(TileIndex tile)
Add the given tile to the animated tile table (if it does not exist on that table yet).
Definition: animated_tile.cpp:41