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# Copyright (C) YEAR Free Software Foundation, Inc.
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
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msgstr ""
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#. type: Title-text
#: ../scene.txt:1
#, no-wrap
msgid "Exchange posts 2"
msgstr "Bornes 2"

#. type: Resume-text
#: ../scene.txt:2
#, no-wrap
msgid "Collect more valuable information from information exchange posts."
msgstr "Récolter des informations de direction et de distance, afin d'apprendre le concept de variable."

#. type: ScriptName-text
#: ../scene.txt:3
#, no-wrap
msgid "Info"
msgstr "Suivre"

#. type: \b; header
#: ../help/help.E.txt:1
#, no-wrap
msgid "Exercise"
msgstr "Exercice"

#. type: Plain text
#: ../help/help.E.txt:2
#, no-wrap
msgid "In this exercise, the <a object|exchange>information exchange posts</a> along the way contain the direction of the next post and the distance. And you do not know how many exchange posts you must get in touch with before arriving at your goal."
msgstr "9 <a object|exchange>bornes</a> d'informations sont placées le long d'un chemin. Lorsque le <a object|bottr>robot</a> est proche d'une borne, il peut lire les informations qu'elle contient et qui donnent la direction et la distance jusqu'à la borne suivante."

#. type: \b; header
#: ../help/help.E.txt:4
#, no-wrap
msgid "General principle"
msgstr "Principe"

#. type: Plain text
#: ../help/help.E.txt:5
#, no-wrap
msgid "\tRepeat forever:"
msgstr ""

#. type: Bullet: 'o'
#: ../help/help.E.txt:6
#, no-wrap
msgid "Retrieve the direction from the <a object|exchange>exchange post</a>."
msgstr "Lire la direction dans la <a object|exchange>borne</a>."

#. type: Bullet: 'o'
#: ../help/help.E.txt:7
#, no-wrap
msgid "Retrieve the distance from the <a object|exchange>exchange post</a>."
msgstr "Lire la longueur dans la <a object|exchange>borne</a>."

#. type: Bullet: 'o'
#: ../help/help.E.txt:8
#, no-wrap
msgid "If no information could be retrieved, stop the program."
msgstr ""

#. type: Bullet: 'o'
#: ../help/help.E.txt:9
#, no-wrap
msgid "Execute the rotation."
msgstr "Tourner dans la direction obtenue."

#. type: Bullet: 'o'
#: ../help/help.E.txt:10
#, no-wrap
msgid "Move forward to the next post."
msgstr "Avancer de la longueur obtenue."

#. type: Plain text
#: ../help/help.E.txt:12
#, no-wrap
msgid "In order to repeat always, use a <code><a cbot|while>while</a> (true)</code> loop. The instructions between the braces <code>{ }</code> will be repeated over and over, or until a <code><a cbot|break>break</a></code> instruction is executed."
msgstr ""

#. type: Source code
#: ../help/help.E.txt:13
#, no-wrap
msgid "<c/>\twhile ( true )"
msgstr ""

#. type: Plain text
#: ../help/help.E.txt:15
#, no-wrap
msgid "This time you need 2 <a cbot|var>variables</a>, one for the rotation angle, one for the distance, for example <code>dir</code> and <code>len</code> :"
msgstr "Il faut définir deux <a cbot|var>variables</a> <code>dir</code> et <code>len</code>:"

#. type: Source code
#: ../help/help.E.txt:16
#, no-wrap
msgid "<c/>\tfloat  dir, len;"
msgstr "<c/>\tfloat  dir, len;"

#. type: Plain text
#: ../help/help.E.txt:18
#, no-wrap
msgid "Then you can retrieve the information:"
msgstr "Et ensuite leur assigner la direction à prendre et la longueur à avancer:"

#. type: Source code
#: ../help/help.E.txt:19
#, no-wrap
msgid ""
"<c/>\tdir = receive(\"Direction\");\n"
"<c/>\tlen = receive(\"Length\");"
msgstr ""
"<c/>\tdir = receive(\"Direction\");\n"
"<c/>\tlen = receive(\"Length\");"

#. type: Plain text
#: ../help/help.E.txt:22
#, no-wrap
msgid ""
"A variable of the <a cbot|type>type</a> <code><a cbot|float>float</a></code> can take a special value called <code><a cbot|nan>nan</a></code>. This value means that the variable contains no number (Not A Number).\n"
"When there is no <a object|exchange>exchange post</a> nearby, either because the bot has reached the goal, or because it took the wrong way, the two variables <code>dir</code> and <code>len</code> contain this value. You can test this with the instruction <code><a cbot|if>if</a></code>, and stop the program if necessary with the instruction <code><a cbot|break>break</a></code>:"
msgstr ""

#. type: Source code
#: ../help/help.E.txt:24
#, no-wrap
msgid "<c/>\tif ( dir == nan )  break;"
msgstr ""

#. type: Plain text
#: ../help/help.E.txt:26
#, no-wrap
msgid "If the information retrieval from the <a object|exchange>exchange post</a> has been performed successfully, execute the rotation:"
msgstr ""

#. type: Source code
#: ../help/help.E.txt:27
#, no-wrap
msgid "<c/>\tturn(dir);"
msgstr "<c/>\tturn(dir);"

#. type: Plain text
#: ../help/help.E.txt:29
#, no-wrap
msgid "And move forward:"
msgstr "Puis avancer avec:"

#. type: Source code
#: ../help/help.E.txt:30
#, no-wrap
msgid "<c/>\tmove(len);"
msgstr "<c/>\tmove(len);"

#. type: \b; header
#: ../help/help.E.txt:32
#, no-wrap
msgid "Remark"
msgstr "Remarque"

#. type: Plain text
#: ../help/help.E.txt:33
#, no-wrap
msgid "You can click on an <a object|exchange>information exchange post</a> in order to read what information it contains. In this exercise, every exchange post contains two values called <code>\"Direction\"</code> and <code>\"Length\"</code>."
msgstr "En cliquant sur une <a object|exchange>borne</a> pour la sélectionner, vous pouvez voir les paramètres qu'elle contient. Dans cet exercice, chaque borne contient deux informations appelées <code>\"Direction\"</code> et <code>\"Length\"</code>."

#. type: \t; header
#: ../help/help.E.txt:35
#, no-wrap
msgid "See also"
msgstr "Voir aussi"

#. type: Plain text
#: ../help/help.E.txt:36
#, no-wrap
msgid "<a cbot>Programming</a>, <a cbot|type>types</a> and <a cbot|category>categories</a>."
msgstr "<a texch1>Exercice précédent</a> et <a cbot>programmation</a>."