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annotate mde/input/Config.d @ 81:d8fccaa45d5f

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Moved file IO code from mde/mergetag to mde/file[/mergetag] and changed how some errors are caught.
author Diggory Hardy <diggory.hardy@gmail.com>
date Fri, 29 Aug 2008 11:59:43 +0100
parents 61ea26abe4dd
children ac1e3fd07275
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1 /* LICENSE BLOCK
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2 Part of mde: a Modular D game-oriented Engine
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3 Copyright © 2007-2008 Diggory Hardy
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4
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5 This program is free software: you can redistribute it and/or modify it under the terms
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6 of the GNU General Public License as published by the Free Software Foundation, either
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7 version 2 of the License, or (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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11 See the GNU General Public License for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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15
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16 /// This module contains a class for holding configs and handles saving, loading and editing.
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17 module mde.input.Config;
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18
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19 import mde.input.exception;
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20
81
d8fccaa45d5f Moved file IO code from mde/mergetag to mde/file[/mergetag] and changed how some errors are caught.
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21 import MT = mde.file.mergetag.Reader;
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66d555da083e Moved many modules/packages to better reflect usage.
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22 import mde.setup.paths;
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23 import mde.file.deserialize;
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24 debug import mde.file.serialize;
32
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25
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26 import tango.util.log.Log : Log, Logger;
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27 import tango.util.collection.TreeBag : TreeBag;
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28
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29 /** Class to hold the configuration for the input system. Thus loading and switching between
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30 * multiple configurations should be easy.
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31 *
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32 * Class extends DataSection so that it can be loaded by mergetag easily.
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33 */
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34 class Config : MT.IDataSection
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35 {
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36 alias uint[] outQueue; // This is the type for the out queue config data.
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37 /** Button event type bit-codes
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38 *
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39 * These bitcodes are OR'd to the identifier code for the input device, to indicate which type
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40 * of input they are for. E.g. when a key event is recieved with code x, look up
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41 * $(_B _B.SDLKEY) | x in button. Keyboard events are SDL-specific since the codes may differ
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42 * for other libraries.
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43 *
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44 * For joystick hat events, a motion is converted into up and down events on separate U,L,D,R
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45 * positions and up and down events sent to the appropriate outputs (effectively making four
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46 * buttons, some pairs of which can be pressed simultaneously). For output to axes, see
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47 * A.JOYHAT_* .
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48 */
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49 enum B : uint {
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50 KEY = 0x8000_0000u, /// 0x8000_0000
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51 SDLKEY = 0x8800_0000u, /// 0x8800_0000
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52 MOUSE = 0x4000_0000u, /// 0x4000_0000
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53 JOYBUTTON = 0x2000_0000u, /// 0x2000_0000
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54 JOYHAT = 0x1000_0000u, /// 0x1000_0000
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55 JOYHAT_U = 0x1800_0000u, /// 0x1800_0000
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56 JOYHAT_D = 0x1400_0000u, /// 0x1400_0000
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57 JOYHAT_L = 0x1200_0000u, /// 0x1200_0000
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58 JOYHAT_R = 0x1100_0000u, /// 0x1100_0000
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59 }
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60
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61 /** Axis event type bit-codes
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62 *
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63 * SDL only supports one type of axis now, but this could be extended in the future.
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64 *
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65 * This can also be used to make joystick hats output to two axes (and can be used in
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66 * conjuction with B.JOYHAT_* to output as buttons as well).
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67 */
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68 enum A : uint {
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69 JOYAXIS = 0x8000_0000u, /// 0x8000_0000
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70 JOYHAT = 0x1000_0000u, /// 0x1000_0000
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71 JOYHAT_LR = 0x1300_0000u, /// 0x1300_0000
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72 JOYHAT_UD = 0x1C00_0000u, /// 0x1C00_0000
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73 }
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74
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75 /** Mouse & Joystick ball event type bit-codes
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76 *
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77 * Currently, mouse input only comes from the window manager: the code is exactly M.WMMOUSE.
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78 */
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79 enum M : uint {
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80 MOUSE = 0x8000_0000u, /// 0x8000_0000
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81 WMMOUSE = 0x8800_0000u, /// 0x8800_0000
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82 JOYBALL = 0x4000_0000u, /// 0x4000_0000
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83 }
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84
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85 /** Output queues: the core of the input configuration.
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86 *
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87 * These are all mapped with a uint key; upon any event outQueues are looked for in the
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88 * appropriate associative array with a key as follows.
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89 *
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90 * The index is split into two parts;
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91 * the first byte specifies the type of input (given by the above enums), and the last three
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92 * bytes define where the input comes from.
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93 *
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94 * For type B.SDLKEY, the last three bytes are for the SDL keysym.
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95 * For B.MOUSE, B.JOY*, A.JOY* & M.JOY*, the last three bytes are split into two sets of 12
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96 * bits (with masks 0x00FF_F000 and 0x0000_0FFF), the higher of which specifies the device
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97 * (which mouse or joystick), and the lower of which specifies the button/axis/ball.
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98 *
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99 * For all three types of output, the outQueues are used as follows. The first value in the queue is
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100 * read, and a function is called with the event details dependant on this; most of the time an
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101 * output function is called directly. Other functions may be used, however, to allow further
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102 * functionality such as modifier keys, timed keys, and key sequences.
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103 *
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104 * The output functions all have code 0x100; these read a single item from the outQueue which
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105 * is the inputID the event outputs to (i.e. any callbacks at that ID called and status set for
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106 * that ID).
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107 *
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108 */
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109 outQueue[][uint] button;
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110 outQueue[][uint] axis; /// ditto
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111 outQueue[][uint] relMotion; /// ditto
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112
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113 // FIXME:
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114 char[] name; /// Name for user to save this under.
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115 uint[] inheritants; /// Other profiles to inherit.
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116
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117 static Config[char[]] configs; /// All configs loaded by load().
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118 private static TreeBag!(char[]) loadedFiles; // all filenames load tried to read
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119
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120 private static Logger logger;
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121 static this() {
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122 logger = Log.getLogger ("mde.input.config.Config");
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123 }
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124
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125 //BEGIN File loading/saving code
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126 static this () {
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127 loadedFiles = new TreeBag!(char[]);
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128 }
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129
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130 // Load all configs from a file.
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131 static void load (char[] filename) {
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132 if (loadedFiles.contains (filename)) return; // forget it; already done that
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133 loadedFiles.add (filename);
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134
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135 MT.IReader file;
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136
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137 try {
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138 // open and read header:
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139 file = confDir.makeMTReader (filename, PRIORITY.LOW_HIGH, null, true);
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140
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141 file.dataSecCreator =
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142 delegate MT.IDataSection (MT.ID) { return new Config; };
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143
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144 // Restrict config sections if this tag exists:
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145 auto file_configs_p = cast(MT.ID)"Configs" in file.dataset.header._charAA;
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146 MT.ID[] file_configs = null;
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147 if (file_configs_p) {
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148 file_configs = cast(MT.ID[]) *file_configs_p;
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149 }
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150
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151 if (file_configs) file.read(file_configs); // restrict to this set IF a restriction was given
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152 else file.read(); // otherwise read all
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153 }
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154 catch (MT.MTException e) {
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155 logger.fatal ("Unable to load configs from: " ~ filename ~ ":");
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156 logger.fatal (e.msg);
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157 throw new ConfigLoadException;
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158 }
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159
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160 // Trying to directly cast dataset.sec to configs resulted in the Configs losing their data.
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161 // Also this is safer since it checks types (and must be done if configs wasn't previously empty).
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162 foreach (i, sec; file.dataset.sec) {
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163 Config c = cast(Config) sec;
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164 if (c) configs[i] = c; // Check, because we don't want null entries in configs
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165 else debug logger.error ("Ended up with DataSection of wrong type; this should never happen.");
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166 }
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167
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168 debug (MDE_CONFIG_DUMP) {
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169 logger.trace ("Loaded {} config sections.", configs.length);
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170 foreach (id, cfg; configs) {
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171 logger.trace ("Section " ~ id ~
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172 ":\n\tbutton:\t\t" ~ parseFrom!(uint[][][uint])(cfg.button) ~
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173 "\n\taxis:\t\t" ~ parseFrom!(uint[][][uint])(cfg.axis) ~
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174 "\n\trelMotion:\t" ~ parseFrom!(uint[][][uint])(cfg.relMotion) );
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175 }
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176 }
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177 }
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178
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179 private this() {} // Private since this class should only be created from here.
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180
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181 void addTag (char[] tp, MT.ID id, char[] dt) {
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182 if (tp == "uint[][uint]") {
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183 if (id == "B") button = cast(outQueue[][uint]) parseTo!(uint[][][uint]) (dt);
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184 else if (id == "A") axis = cast(outQueue[][uint]) parseTo!(uint[][][uint]) (dt);
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185 else if (id == "M") relMotion = cast(outQueue[][uint]) parseTo!(uint[][][uint]) (dt);
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186 else logger.warn ("Unexpected tag encountered with ID " ~ cast(char[])id);
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187 } // FIXME: add support for name and inheritants.
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188 }
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189 void writeAll (ItemDelg) {
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190 // FIXME
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191 }
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192 //END File loading/saving code
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193 }