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annotate engine/core/video/animation.h @ 46:90005975cdbb

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* Final LGPL switch step by adjusting the file headers * Remaining issues (just slightly related to the unittest switch): * No working unittest solution for msvc2005 yet * Unittests not working with mingw + scons either though this seems hard to impossible to fix without an expert in this field * sample_unit_test.cpp would need to get modified for unittest++; it still contains the old boost unittest code
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 13 Jul 2008 11:05:12 +0000
parents 4a0efb7baf70
children 6e7d228def30
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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21
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22 #ifndef FIFE_VIDEO_ANIMATION_H
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23 #define FIFE_VIDEO_ANIMATION_H
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24
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25 // Standard C++ library includes
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26 #include <cassert>
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27 #include <map>
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28 #include <vector>
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29
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30 // Platform specific includes
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31 #include "util/base/fife_stdint.h"
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32
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33 // 3rd party library includes
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34
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35 // FIFE includes
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36 // These includes are split up in two parts, separated by one empty line
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37 // First block: files included from the FIFE root src directory
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38 // Second block: files included from the same folder
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39 #include "util/base/resourceclass.h"
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40
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41 namespace FIFE {
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42
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43 class Image;
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44
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45 /** Animation.
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46 *
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47 * A container of Images describing an animation. Animation itself does
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48 * not take care of animating the images. Instead it contains images
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49 * having associated timestamps. It is the responsibility of the
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50 * animation user to query frames based on current timestamp and show
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51 * returned images on screen.
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52 */
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53 class Animation : public ResourceClass {
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54 public:
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55 /** Constructor.
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56 */
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57 explicit Animation();
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58
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59 /** Destructor. Decreases the reference count of all referred images.
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60 */
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61 ~Animation();
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62
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63 //TODO: fill in these stubs! Note, m_location is not properly initialized.
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64 virtual const ResourceLocation& getResourceLocation() { return m_location; }
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65
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66 virtual void setResourceLocation(const ResourceLocation& location) { }
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67 virtual void setResourceFile(const std::string& filename) { }
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68
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69 /** Adds new frame into animation
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70 * Frames must be added starting from first frame. Increases the reference
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71 * count of the given image.
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72 * @param image Pointer to Image. Does not transfer the ownership
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73 * @param duration Duration for given frame in the animation
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74 */
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75 void addFrame(Image* image, unsigned int duration);
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76
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77 /** Get the frame index that matches given timestamp. In case there is no exact match,
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78 * correct frame is calculated. E.g. if there are frames for timestamps 50 and 100
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79 * and frame for 75 is asked, frame associated with value 50 is given back.
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80 * In case the timestamp is past the sequence, negative value is returned
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81 * @see addFrame
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82 */
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83 int getFrameIndex(unsigned int timestamp);
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84
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85 /** Gets the frame that matches the given index. If no matches found, returns NULL
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86 */
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87 Image* getFrame(int index);
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88
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89 /** Gets the frame that matches the given timestamp.
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90 */
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91 Image* getFrameByTimestamp(unsigned int timestamp);
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92
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93 /** Gets the frame duration for given (indexed) frame. Returns negative value in case
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94 * of incorrect index
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95 */
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96 int getFrameDuration(int index);
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97
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98 /** Get the number of frames
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99 */
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100 unsigned int getNumFrames() const;
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101
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102 /** Sets the action frame. Action frame is the frame when the related
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103 * action actually happens. E.g. in case of punch animation, action frame is
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104 * the frame when punch hits the target. In case there is no associated
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105 * action frame, value is negative
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106 * @param num index of the action frame.
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107 */
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108 void setActionFrame(int num) { m_action_frame = num; }
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109
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110 /** Gets the action frame.
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111 * @see setActionFrame
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112 */
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113 int getActionFrame() { return m_action_frame; }
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114
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115 /** Animation direction tells how this animation is associated
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116 * with movement when played starting from frame 0
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117 * E.g. in walking animation there should be direction assigned so
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118 * that engine can choose the correct animation when characters are
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119 * moved around the map area
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120 * @param direction direction to set
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121 */
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122 void setDirection(unsigned int direction);
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123
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124 /** Gets the animation direction
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125 * @see setDirection
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126 * @return direction for this animation
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127 */
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128 unsigned int getDirection() { return m_direction; }
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129
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130 /** Gets the total duration for the whole animation
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131 */
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132 int getDuration() { return m_animation_endtime; }
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133
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134 private:
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135 /** Contains information about one animation frame (duration + frame index + frame pointer)
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136 */
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137 struct FrameInfo {
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138 unsigned int index;
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139 unsigned int duration;
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140 Image* img;
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141 };
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142
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143 ResourceLocation m_location;
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144
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145 /** Checks for animation frame index overflows
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146 */
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147 bool isValidIndex(int index);
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148
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149 // Map of timestamp + associated frame
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150 std::map<unsigned int, FrameInfo> m_framemap;
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151 // vector of frames for fast indexed access
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152 std::vector<FrameInfo> m_frames;
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153 // Action frame of the Animation.
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154 int m_action_frame;
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155 // time when animation ends (zero based)
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156 int m_animation_endtime;
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157 // Direction for this animation
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158 unsigned int m_direction;
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159
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160 };
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161 }
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162
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163 #endif
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164 /* vim: set noexpandtab: set shiftwidth=2: set tabstop=2: */