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annotate engine/core/view/rendererbase.h @ 2:e84dccee1bb7

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* add myself to authors * fix missing break in guimanager * when an event occurs over an guichan window the event is marked as consumedByGuichan, but the event is still distributed to all event listeners, those can check via event.isConsumedByGuichan...
author spq@33b003aa-7bff-0310-803a-e67f0ece8222
date Tue, 01 Jul 2008 17:43:35 +0000
parents 4a0efb7baf70
children 90005975cdbb
rev   line source
0
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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 modify *
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7 * it under the terms of the GNU General Public License as published by *
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8 * the Free Software Foundation; either version 2 of the License, or *
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9 * (at your option) any later version. *
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10 * *
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11 * This program 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 *
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14 * GNU 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 General Public License *
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17 * along with this program; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_RENDERERBASE_H
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23 #define FIFE_RENDERERBASE_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 directory
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33 // Second block: files included from the same folder
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34
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35 namespace FIFE {
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36 class Camera;
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37 class Layer;
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38 class Map;
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39 class Instance;
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40 class RenderBackend;
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41
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42 class RendererBase;
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43 /** RendererListener allows reaction to changes in renderer
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44 * Having this implemented via callback mechanism should speed up the rendering a bit
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45 * (e.g. no need to sort pipeline order per each frame)
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46 */
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47 class IRendererListener {
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48 public:
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49 virtual ~IRendererListener() {}
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50
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51 /** Renderer's pipeline position has been changed
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52 */
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53 virtual void onRendererPipelinePositionChanged(RendererBase* renderer) = 0;
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54
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55 /** Renderer is enabled / disabled
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56 */
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57 virtual void onRendererEnabledChanged(RendererBase* renderer) = 0;
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58 };
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59
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60 /** Interface to class owning the renderers
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61 * Used to get correct subclass of renderer in scripting side (via renderer's static method)
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62 */
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63 class IRendererContainer {
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64 public:
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65 virtual ~IRendererContainer() {}
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66
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67 /** Returns renderer with given name
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68 */
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69 virtual RendererBase* getRenderer(const std::string& renderername) = 0;
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70 };
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71
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72 /** Base class for all view renderers
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73 * View renderer renders one aspect of the view shown on screen
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74 */
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75 class RendererBase {
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76 public:
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77 /** Constructor
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78 * @param renderbackend to use
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79 * @param position position for this renderer in rendering pipeline
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80 */
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81 RendererBase(RenderBackend* renderbackend, int position);
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82
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83 /** Copy Constructor
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84 */
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85 RendererBase(const RendererBase& old);
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86
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87 /** Makes copy of this renderer
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88 */
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89 virtual RendererBase* clone() = 0;
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90
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91 /** Destructor
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92 */
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93 virtual ~RendererBase() {};
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94
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95 /** This method is called by the view to ask renderer to draw its rendering aspect based on
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96 * given parameters. Renderers receive non-clipped instance stack since there is no
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97 * way to know which information is relevant for the renderer. E.g. effect renderer
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98 * might need to know offscreen instance locations to be able to draw radiation coming from
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99 * some instance not visible on the screen.
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100 *
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101 * @param cam camera view to draw
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102 * @param layer current layer to be rendered
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103 * @param instances instances on the current layer
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104 * @ see setPipelinePosition
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105 */
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106 virtual void render(Camera* cam, Layer* layer, std::vector<Instance*>& instances) = 0;
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107
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108 /** Name of the renderer
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109 */
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110 virtual std::string getName() = 0;
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111
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112 /** Gets renderer position in the rendering pipeline
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113 */
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114 int getPipelinePosition() const { return m_pipeline_position; }
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115
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116 /** Sets renderer position in the rendering pipeline
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117 * Pipeline position defines in which order view calls the renderers when update occurs
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118 * Note that renderers are called once per rendered layer, thus to update the
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119 * whole screen, renderer might receive multiple calls
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120 */
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121 void setPipelinePosition(int position);
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122
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123 /** Enables renderer
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124 */
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125 virtual void setEnabled(bool enabled);
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126
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127 /** Resets information in the renderer
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128 */
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129 virtual void reset() {}
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130
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131 /** Is renderer enabled
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132 */
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133 bool isEnabled() const { return m_enabled; }
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134
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135 /** Sets listener for renderer
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136 */
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137 void setRendererListener(IRendererListener* listener) { m_listener = listener; }
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138
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139 /** Adds active layer to renderer. Only active layers are rendered
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140 */
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141 void addActiveLayer(Layer* layer);
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142
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143 /** Removes active layer from renderer.
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144 */
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145 void removeActiveLayer(Layer* layer);
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146
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147 /** Clears all active layers from renderer
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148 */
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149 void clearActiveLayers();
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150
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151 /** Activates all layers from given elevation
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152 */
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153 void activateAllLayers(Map* elevation);
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154
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155 /** Returns if given layer is currently activated
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156 */
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157 bool isActivedLayer(Layer* layer);
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158
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159
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160 protected:
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161 RendererBase();
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162
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163 std::list<Layer*> m_active_layers;
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164 RenderBackend* m_renderbackend;
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165
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166 private:
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167 bool m_enabled;
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168 int m_pipeline_position;
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169 IRendererListener* m_listener;
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170 };
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171 }
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172
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173 #endif