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annotate engine-runner.js @ 43:e45b81cdb4d0

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Modified indentation to be 2 spaces instead of 4, as per Mozilla's JS style guidelines.
author Atul Varma <varmaa@toolness.com>
date Thu, 15 May 2008 23:42:23 -0700
parents 696fef276111
children 1effb310d6ee
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
6
aeb4289c141f Added a test runner class w/ simple test suite.
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1 function Zui() {
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2 }
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3
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4 Zui.prototype = {
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afa332a44721 The zui now has a getSize() method which returns the size of the screen in characters. This is communicated to the z-machine.
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6 // Returns a 2-element list containing the width and height of the
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7 // screen, in characters. The width may be 255, which means
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8 // "infinite".
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10 getSize: function() {
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11 },
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12 onLineInput: function(callback) {
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13 },
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14 onCharacterInput: function(callback) {
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15 },
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16 onSave: function(callback) {
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17 },
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18 onRestore: function(callback) {
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19 },
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20 onQuit: function() {
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21 },
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22 onRestart: function(callback) {
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23 },
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24 onWimpOut: function(callback) {
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25 },
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26 onBreakpoint: function(callback) {
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27 },
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28 onSetStyle: function(textStyle, foreground, background) {
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29 },
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31 // From the Z-Machine spec for split_window: Splits the screen so
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32 // that the upper window has the given number of lines: or, if
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33 // this is zero, unsplits the screen again.
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34
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35 onSplitWindow: function(numLines) {
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36 },
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37 onSetWindow: function(window) {
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38 },
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40 // From the Z-Machine spec for erase_window: Erases window with
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41 // given number (to background colour); or if -1 it unsplits the
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42 // screen and clears the lot; or if -2 it clears the screen
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43 // without unsplitting it.
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44
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45 onEraseWindow: function(window) {
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46 },
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47 onEraseLine: function() {
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48 },
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49 onSetCursor: function(x, y) {
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50 },
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51 onSetBufferMode: function() {
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52 },
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53 onSetInputStream: function() {
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54 },
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55 onGetCursor: function() {
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56 },
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57 onPrint: function(output) {
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58 },
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59 onPrintTable: function(lines) {
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60 },
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61 };
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62
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63 function EngineRunner(engine, zui, logfunc) {
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64 this._engine = engine;
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65 this._zui = zui;
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66 this._isRunning = false;
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67 this._isInLoop = false;
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68 this._isWaitingForCallback = false;
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69
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70 if (logfunc) {
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71 this._log = logfunc;
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72 } else {
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73 this._log = function() {};
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74 }
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75
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76 var self = this;
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78 this.__proto__ = {
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79 stop: function() {
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80 self._isRunning = false;
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81 },
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82
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83 run: function() {
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84 var size = self._zui.getSize();
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85
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86 self._isRunning = true;
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87 self._engine.m_memory[0x20] = size[1];
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88 self._engine.m_memory[0x21] = size[0];
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89 self._continueRunning();
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90 },
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91
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92 _continueRunning: function() {
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93 while (self._isRunning && !self._isWaitingForCallback) {
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94 self._loop();
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95 }
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96 },
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98 _receiveLineInput: function(input) {
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99 self._isWaitingForCallback = false;
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100 self._engine.answer(1, input);
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101 if (!self._isInLoop) {
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102 self._continueRunning();
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103 } else {
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104 /* We're still inside _loop(), so just return. */
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105 }
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106 },
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108 _receiveCharacterInput: function(input) {
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109 self._isWaitingForCallback = false;
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110 self._engine.answer(0, input);
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111 if (!self._isInLoop) {
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112 self._continueRunning();
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113 } else {
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114 /* We're still inside _loop(), so just return. */
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115 }
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116 },
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3a85b5915ea6 Added bad implementation of character input. The 'info' command in Troll no longer crashes the Z-Machine, but because we don't currently support multiple windows and the the 'info' command uses the top window as an interface, it still looks like it's hanging.
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117
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118 _loop: function() {
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119 if (self._isInLoop)
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120 throw Error("Already in loop!");
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121
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122 self._isInLoop = true;
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123 var engine = self._engine;
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124
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125 engine.run();
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126
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127 var text = engine.consoleText();
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128 if (text)
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129 self._zui.onPrint(text);
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130
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131 var effect = '"' + engine.effect(0) + '"';
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132
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133 var logString = "[ " + engine.effect(0);
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134
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135 for (var i = 1; engine.effect(i) != undefined; i++) {
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136 var value = engine.effect(i);
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137 if (typeof value == "string")
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138 value = value.quote();
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139 logString += ", " + value;
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140 }
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141
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142 self._log(logString + " ]");
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143
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144 switch (effect) {
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145 case GNUSTO_EFFECT_INPUT:
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146 self._isWaitingForCallback = true;
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147 self._zui.onLineInput(self._receiveLineInput);
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148 break;
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149 case GNUSTO_EFFECT_INPUT_CHAR:
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150 self._isWaitingForCallback = true;
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151 self._zui.onCharacterInput(self._receiveCharacterInput);
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152 break;
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153 case GNUSTO_EFFECT_SAVE:
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154 case GNUSTO_EFFECT_RESTORE:
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155 throw Error("Unimplemented effect: " + effect);
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156 case GNUSTO_EFFECT_QUIT:
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157 self.stop();
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158 self._zui.onQuit();
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159 break;
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diff changeset
160 case GNUSTO_EFFECT_RESTART:
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161 case GNUSTO_EFFECT_WIMP_OUT:
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162 case GNUSTO_EFFECT_BREAKPOINT:
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163 case GNUSTO_EFFECT_FLAGS_CHANGED:
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164 case GNUSTO_EFFECT_PIRACY:
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165 throw Error("Unimplemented effect: " + effect);
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166 case GNUSTO_EFFECT_STYLE:
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167 self._zui.onSetStyle(engine.effect(1),
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168 engine.effect(2),
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169 engine.effect(3));
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170 break;
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diff changeset
171 case GNUSTO_EFFECT_SOUND:
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172 throw Error("Unimplemented effect: " + effect);
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173 case GNUSTO_EFFECT_SPLITWINDOW:
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174 self._zui.onSplitWindow(engine.effect(1));
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175 break;
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diff changeset
176 case GNUSTO_EFFECT_SETWINDOW:
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177 self._zui.onSetWindow(engine.effect(1));
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178 break;
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diff changeset
179 case GNUSTO_EFFECT_ERASEWINDOW:
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180 self._zui.onEraseWindow(engine.effect(1));
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181 break;
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diff changeset
182 case GNUSTO_EFFECT_ERASELINE:
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183 throw Error("Unimplemented effect: " + effect);
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184 case GNUSTO_EFFECT_SETCURSOR:
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185 self._zui.onSetCursor(engine.effect(2),
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186 engine.effect(1));
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187 break;
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188 case GNUSTO_EFFECT_SETBUFFERMODE:
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189 case GNUSTO_EFFECT_SETINPUTSTREAM:
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190 case GNUSTO_EFFECT_GETCURSOR:
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191 case GNUSTO_EFFECT_PRINTTABLE:
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192 throw Error("Unimplemented effect: " + effect);
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193 }
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194
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195 self._isInLoop = false;
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196 }
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197 };
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198 }