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annotate engine/core/model/structures/instancetree.h @ 405:cfe2f6db4964

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Reverting my last change to camera.cpp. It caused unexpected results with rotated tiles.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Fri, 29 Jan 2010 15:55:47 +0000
parents 0fd74235b34d
children
rev   line source
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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22 #ifndef FIFE_INSTANCETREE_H
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23 #define FIFE_INSTANCETREE_H
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24
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25 // Standard C++ library includes
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26 #include <list>
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27
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28 // 3rd party library includes
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29
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30 // FIFE includes
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31 // These includes are split up in two parts, separated by one empty line
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32 // First block: files included from the FIFE root src
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33 #include "util/base/fifeclass.h"
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34
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35 #include "util/structures/quadtree.h"
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36 #include "model/metamodel/modelcoords.h"
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37
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38 namespace FIFE {
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39
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40 class Instance;
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41
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42 class InstanceTree: public FifeClass {
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43 static const int kTreeDepth = 2;
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44 public:
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45 typedef std::list<Instance*> InstanceList;
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46 typedef QuadTree< InstanceList, kTreeDepth > InstanceQuadTree;
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47 typedef InstanceQuadTree::Node InstanceTreeNode;
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48
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49 /** Constructor
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50 *
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51 */
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52 InstanceTree();
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53
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54 /** Destructor
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55 *
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56 */
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57 virtual ~InstanceTree();
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58
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59 /** Adds an instance to the quad tree.
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60 *
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61 * Adds an instance to the quad tree based upon it's location on the layer and it's
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62 * area.
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63 *
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64 * @param instance A pointer to the instance to add.
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65 * @note In case you added the instance before this will throw.
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66 */
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67 void addInstance(Instance* instance);
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68
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69 /** Removes an instance from the quad tree.
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70 *
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71 * Locates an instance in the quad tree then removes it.
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72 *
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73 * @param instance A pointer to the instance to find and remove.
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74 * @note In case you did @b not add the instance before this will throw.
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75 */
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76 void removeInstance(Instance* instance);
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77
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78 /** Find all instances in a given area.
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79 *
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80 * Takes a box as an area then returns a vector filled with all instances that intersect
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81 * with that box.
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82 *
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83 * @param point A ModelCoordinate representing the upper left part of the search area.
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84 * @param w The width of the search area in Model Units.
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85 * @param h The height of the search area in Model Units.
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86 * @param lst vector reference that will be filled with all instances within that space.
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87 */
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88 void findInstances(const ModelCoordinate& point, int w, int h, InstanceList& lst);
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89
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90 /** See QuadNode::apply_visitor
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91 */
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92 template<typename Visitor> void applyVisitor(Visitor& visitor) {
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93 m_tree.apply_visitor(visitor);
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94 }
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95
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96
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97 private:
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98 InstanceQuadTree m_tree;
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d266506ff4f9 Bug fix.
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99 std::map<Instance*,InstanceTreeNode*> m_reverse;
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100 };
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101
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102 }
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103
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104 #endif