# SOME DESCRIPTIVE TITLE # Copyright (C) YEAR Free Software Foundation, Inc. # This file is distributed under the same license as the PACKAGE package. # FIRST AUTHOR , YEAR. # #, fuzzy msgid "" msgstr "" "Project-Id-Version: PACKAGE VERSION\n" "POT-Creation-Date: DATE\n" "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" "Last-Translator: FULL NAME \n" "Language-Team: LANGUAGE \n" "Language: \n" "MIME-Version: 1.0\n" "Content-Type: text/plain; charset=UTF-8\n" "Content-Transfer-Encoding: 8bit\n" #. type: One-char language identifier #: levels-po/exercises/chapter007/level001/scene_langchar.txt:1 #, no-wrap msgid "E" msgstr "" #. type: Title-text #: levels/exercises/chapter007/level001/scene.txt:1 #, no-wrap msgid "Remote control #3" msgstr "" #. type: Resume-text #: levels/exercises/chapter007/level001/scene.txt:2 #, no-wrap msgid "" "Remote control a bot without using an information exchange post by using a " "string." msgstr "" #. type: ScriptName-text #: levels/exercises/chapter007/level001/scene.txt:3 #, no-wrap msgid "Remote3" msgstr "" #. type: \b; header #: levels/exercises/chapter007/level001/help/help.E.txt:1 #, no-wrap msgid "Exercice" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:3 #, no-wrap msgid "" "Remote control a slave robot without using an information " "exchange post. The robot should pass over the 6 blue crosses. You must " "use a string to pass the orders to the slave bot. This " "string contains the order the slave shoud execute, for exemple " "\"move(20)\". You can see that this is the same syntax as used " "in the CBOT language but we could have chosen any other syntax for exemple " "something like \"advance=20\". The string will be a static class member that will be used to communicate " "from the master to the slave." msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:5 #, no-wrap msgid "The two main actors of this exercise are:\n" msgstr "" #. type: Bullet: '1)' #: levels/exercises/chapter007/level001/help/help.E.txt:5 #, no-wrap msgid "" "The wheeled grabber without an energy pack and therefore " "immobile. This is the master you should program so it will transmit orders " "to the slave." msgstr "" #. type: Bullet: '2)' #: levels/exercises/chapter007/level001/help/help.E.txt:6 #, no-wrap msgid "" "The slave practice bot which is already programmed and " "just waits for orders from the master." msgstr "" #. type: \b; header #: levels/exercises/chapter007/level001/help/help.E.txt:8 #, no-wrap msgid "The slave" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:10 #, no-wrap msgid "" "First of all we must understand how the program of the slave works. The class exchange contains the mechanism for " "exchaning the orders. We declare a static " "class member m_order which will contain the order to be " "executed. The word static insures that the member " "m_order is shared between all instances of the class exchange." msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:12 #, no-wrap msgid "public class exchange" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:14 #, no-wrap msgid "" "{\n" "\tstatic private string m_order = \"\";" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:16 #, no-wrap msgid "" "The put method will be used by the master robot for " "transmitting an order. As long as the string m_order is not " "empty, the slave has not finished the order and the put method " "will return false and will do nothing." msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:18 #, no-wrap msgid "" "\tsynchronized bool put(string " "order)" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:29 #, no-wrap msgid "" "\t{\n" "\t\tif ( m_order == \"\" )\n" "\t\t{\n" "\t\t\tm_order = order;\n" "\t\t\treturn true;\n" "\t\t}\n" "\t\telse\n" "\t\t{\n" "\t\t\treturn false;\n" "\t\t}\n" "\t}" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:31 #, no-wrap msgid "" "Another method get will be used by the slave to retrieve the " "orders. This method returns the string contained in m_order and " "empties it, so a new order can be accepted:" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:33 #, no-wrap msgid "\tsynchronized string get()" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:39 #, no-wrap msgid "" "\t{\n" "\t\tstring ret = m_order;\n" "\t\tm_order = \"\";\n" "\t\treturn ret;\n" "\t}\n" "}" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:41 #, no-wrap msgid "" "The main program of the slave contains an instance of the class " "exchange called list." msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:43 #, no-wrap msgid "extern void object::Slave3( )" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:46 #, no-wrap msgid "" "{\n" "\texchange list();\n" "\tstring todo;" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:48 #, no-wrap msgid "" "The outer while loop lasts for ever. The inner " "while loop waits for an order by using the get " "method of the exchange class. As soon as get " "returns a non empty string, the while loop stops." msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:50 #, no-wrap msgid "\twhile ( true )" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:57 #, no-wrap msgid "" "\t{\n" "\t\twhile ( true )\n" "\t\t{\n" "\t\t\ttodo = list.get();\n" "\t\t\tif ( todo != \"\" ) break;\n" "\t\t\twait(1);\n" "\t\t}" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:59 #, no-wrap msgid "" "Now we have received the order in the todo variable. All we " "have to do is execute it:" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:61 #, no-wrap msgid "\t\tif ( strfind(todo, \"move\") == 0 )" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:70 #, no-wrap msgid "" "\t\t{\n" "\t\t\tmove(strval(strmid(todo,5)));\n" "\t\t}\n" "\t\tif ( strfind(todo, \"turn\") == 0 )\n" "\t\t{\n" "\t\t\tturn(strval(strmid(todo,5)));\n" "\t\t}\n" "\t}\n" "}" msgstr "" #. type: \b; header #: levels/exercises/chapter007/level001/help/help.E.txt:71 #, no-wrap msgid "The master" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:73 #, no-wrap msgid "" "In the master we write an function called SendOrder which will " "send an order to the slave:" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:75 #, no-wrap msgid "void object::SendOrder(string order)" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:83 #, no-wrap msgid "" "{\n" "\texchange list();\n" "\t\n" "\twhile ( list.put(order) == false )\n" "\t{\n" "\t\twait(1);\n" "\t}\n" "}" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:86 #, no-wrap msgid "" "The while loop waits until a pending order has been terminated, " "that is the slaved has exited from the get method.\n" "Now the main program of the master is very simple:" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:88 #, no-wrap msgid "extern void object::Remote3( )" msgstr "" #. type: \s; block (usually verbatim code) #: levels/exercises/chapter007/level001/help/help.E.txt:99 #, no-wrap msgid "" "{\n" "\tSendOrder(\"move(20)\");\n" "\tSendOrder(\"turn(90)\");\n" "\tSendOrder(\"move(20)\");\n" "\tSendOrder(\"turn(90)\");\n" "\tSendOrder(\"move(10)\");\n" "\tSendOrder(\"turn(90)\");\n" "\tSendOrder(\"move(10)\");\n" "\tSendOrder(\"turn(-90)\");\n" "\tSendOrder(\"move(10)\");\n" "}" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:101 #, no-wrap msgid " show these instruction at any time." msgstr "" #. type: \t; header #: levels/exercises/chapter007/level001/help/help.E.txt:102 #, no-wrap msgid "See also" msgstr "" #. type: Plain text #: levels/exercises/chapter007/level001/help/help.E.txt:103 #, no-wrap msgid "Controls and programming." msgstr ""