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annotate mde/options.d @ 22:249eb6620685

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Changes to Options, particularly regarding window sizes. Window sizes for fullscreen and windowed modes are now independant. Window resizes by the WM are now persistant. Options class contents are now generated by templates. committer: Diggory Hardy <diggory.hardy@gmail.com>
author Diggory Hardy <diggory.hardy@gmail.com>
date Tue, 25 Mar 2008 12:24:04 +0000
parents a60cbb7359dd
children 47478557428d
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17
5f90774ea1ef Applied the GNU GPL v2 to mde.
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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 of
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6 the GNU General Public License, version 2, as published by the Free Software Foundation.
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7
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8 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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9 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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10 See the GNU General Public License for more details.
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11
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12 You should have received a copy of the GNU General Public License along
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13 with this program; if not, write to the Free Software Foundation, Inc.,
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14 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
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15
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16 /** This module handles stored options, currently all except input maps.
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17 *
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18 * The purpose of having all options centrally controlled is to allow generic handling by the GUI
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19 * and ease saving and loading of values. The Options class is only really designed around handling
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20 * small numbers of variables for now.
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21 */
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22 module mde.options;
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23
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24 import mde.exception;
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25
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26 import mde.mergetag.Reader;
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27 import mde.mergetag.Writer;
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28 import mde.mergetag.DataSet;
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29 import mde.mergetag.exception;
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30 import mde.resource.paths;
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31
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32 import tango.scrapple.text.convert.parseTo : parseTo;
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33 import tango.scrapple.text.convert.parseFrom : parseFrom;
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34
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35 import tango.util.log.Log : Log, Logger;
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36
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37 /** Base class for handling options. This class itself will handle no options and should not be
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38 * instantiated, but sub-classes handle options.
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39 *
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40 * Each sub-class provides named variables for maximal-speed reading & writing. Sub-class references
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41 * are stored by name, and will be available after pre-init has run (DO NOT access before this).
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42 *
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43 * The static class keeps track of all Options class instances for global loading and saving.
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44 *
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45 * Details: Options sub-classes hold associative arrays of pointers to all option variables, with a
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46 * char[] id. This list is used for saving, loading and to provide generic GUI options screens. The
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47 * built-in support in Options is only for bool, int and char[] types (a float type may get added).
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48 */
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49 class Options : IDataSection
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50 {
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51 // No actual options are stored by this class. However, much of the infrastructure is
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52 // present since it need not be redefined in sub-classes.
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53
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54 // The "pointer lists":
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55 protected bool* [ID] optsBool;
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56 protected char[]*[ID] optsCharA;
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57 protected int* [ID] optsInt;
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58
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59 //BEGIN Mergtag loading/saving code
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60 void addTag (char[] tp, ID id, char[] dt) {
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61 if (tp == "bool") {
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62 bool** p = id in optsBool;
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63 if (p !is null) **p = parseTo!(bool) (dt);
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64 } else if (tp == "char[]") {
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65 char[]** p = id in optsCharA;
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66 if (p !is null) **p = parseTo!(char[]) (dt);
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67 } else if (tp == "int") {
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68 int** p = id in optsInt;
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69 if (p !is null) **p = parseTo!(int) (dt);
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70 }
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71 }
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72 void writeAll (ItemDelg dlg) {
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73 foreach (ID id, bool* val; optsBool) dlg ("bool" , id, parseFrom!(bool ) (*val));
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74 foreach (ID id, char[]* val; optsCharA) dlg ("char[]", id, parseFrom!(char[]) (*val));
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75 foreach (ID id, int* val; optsInt) dlg ("int" , id, parseFrom!(int ) (*val));
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76 }
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77 //END Mergtag loading/saving code
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78
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79 //BEGIN Static
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80 // Each individual section
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81 static OptionsMisc misc;
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82 static OptionsVideo video;
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83
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84 /* Load/save options from file.
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85 *
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86 * If the file doesn't exist, no reading is attempted (options are left at default values).
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87 */
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88 private static const fileName = "options";
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89 static void load () {
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90 // Create all uncreated sections now, so that if we return early they are still created.
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91 if (misc is null) misc = new OptionsMisc;
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92 if (video is null) video = new OptionsVideo;
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93
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94 // Check it exists (if not it should still be created on exit).
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95 // Don't bother checking it's not a folder, because it could still be a block or something.
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96 if (!confDir.exists (fileName)) return;
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97
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98 IReader reader;
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99 try {
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100 reader = confDir.makeMTReader (fileName, PRIORITY.LOW_HIGH);
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101 reader.dataSecCreator = delegate IDataSection(ID id) {
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102 /* Recognise each defined section, and return null for unrecognised sections. */
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103
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104 if (id == cast(ID) "misc") return misc;
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105 else if (id == cast(ID) "video") return video;
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106 else return null;
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107 };
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108 reader.read;
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109 } catch (MTException e) {
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110 logger.error ("Mergetag exception occurred:");
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111 logger.error (e.msg);
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112 throw new optionsLoadException ("Loading aborted: mergetag exception");
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113 }
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114 }
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115 static void save () {
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116 DataSet ds = new DataSet();
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117 ds.sec[cast(ID) "misc"] = misc;
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118 ds.sec[cast(ID) "video"] = video;
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119
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120 IWriter writer;
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121 try {
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122 writer = confDir.makeMTWriter (fileName, ds);
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123 writer.write();
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124 } catch (MTException e) {
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125 logger.error ("Mergetag exception occurred; saving aborted:");
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126 logger.error (e.msg);
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127 //FIXME: currently nothing done besides logging the error
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128 }
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129 }
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130
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131 private static Logger logger;
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132 static this() {
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133 logger = Log.getLogger ("mde.options");
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134 }
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135 //END Static
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136
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137 //BEGIN Templates
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138 template store(A...) {
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139 alias A a;
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140 }
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141 template decRecurse(char[] A, B...) {
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142 static if (B.length) const char[] decRecurse = A ~ ", " ~ decRecurse!(B);
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143 else const char[] decRecurse = A;
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144 }
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145 template decBool(A...) {
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146 const char[] decBool = "bool " ~ decRecurse!(A) ~ ";\n";
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147 }
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148 template decCharA(A...) {
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149 const char[] decCharA = "char[] " ~ decRecurse!(A) ~ ";\n";
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150 }
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151 template decInt(A...) {
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152 const char[] decInt = "int " ~ decRecurse!(A) ~ ";\n";
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153 }
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154 template aaRecurse(char[] A, B...) {
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155 static if (B.length) const char[] aaRecurse = "\""~A~"\"[]:&"~A ~ ", " ~ aaRecurse!(B);
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156 else const char[] aaRecurse = "\""~A~"\"[]:&"~A;
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157 }
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158 template aaBool(A...) {
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159 const char[] aaBool = "optsBool = [" ~ aaRecurse!(A) ~ "];\n";
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160 }
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161 template aaInt(A...) {
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162 const char[] aaInt = "optsInt = [" ~ aaRecurse!(A) ~ "];\n";
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163 }
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164 template aaCharA(A...) {
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165 const char[] aaCharA = "optsCharA = [" ~ aaRecurse!(A) ~ "];\n";
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166 }
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167 //END Templates
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168 }
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169
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170 /* NOTE: These Options classes use templates to ease inserting contents.
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171 *
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172 * Each entry has an I18nTranslation entry; see data/L10n/ClassName.mtt for descriptions.
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173 *
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174 * To create a new class, copy and paste, and update Options.
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175 */
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176
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177 /** A home for all miscellaneous options, at least for now. */
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178 class OptionsMisc : Options {
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179 alias store!("useThreads") BOOL;
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180 alias store!("logLevel") INT;
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181 alias store!("L10n") CHARA;
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182
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183 mixin (decBool!(BOOL.a));
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184 mixin (decInt!(INT.a));
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185 mixin (decCharA!(CHARA.a));
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186
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187 this () {
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188 mixin (aaBool!(BOOL.a));
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189 mixin (aaInt!(INT.a));
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190 mixin (aaCharA!(CHARA.a));
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191 }
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192 }
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193
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194 /** All video options. */
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195 class OptionsVideo : Options {
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196 alias store!("fullscreen","hardware","resizable","noFrame") BOOL;
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197 alias store!("screenW","screenH","windowW","windowH") INT;
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198 //alias store!() CHARA;
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199
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200 mixin (decBool!(BOOL.a));
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201 mixin (decInt!(INT.a));
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202 //mixin (decCharA!(CHARA.a));
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203
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204 this () {
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205 mixin (aaBool!(BOOL.a));
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206 mixin (aaInt!(INT.a));
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207 //mixin (aaCharA!(CHARA.a));
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208 }
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209 }