# SOME DESCRIPTIVE TITLE
# Copyright (C) YEAR Free Software Foundation, Inc.
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, 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 <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\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/chapter004/level005/scene_langchar.txt:1
#, no-wrap
msgid "E"
msgstr ""

#. type: Title-text
#: levels/exercises/chapter004/level005/scene.txt:1
#, no-wrap
msgid "Shadow"
msgstr ""

#. type: Resume-text
#: levels/exercises/chapter004/level005/scene.txt:2
#, no-wrap
msgid "Follow a bot, as if you were its shadow."
msgstr ""

#. type: ScriptName-text
#: levels/exercises/chapter004/level005/scene.txt:3
#, no-wrap
msgid "Follow"
msgstr ""

#. type: \b; header
#: levels/exercises/chapter004/level005/help/help.E.txt:1
#, no-wrap
msgid "Exercise"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:3
#, no-wrap
msgid ""
"You must follow the <a object|bottr>target bot</a> with the explosive "
"device, but without touching it, otherwise it will blow up. Every time the "
"target bot stops, you must be close to it (less than 10m). After you managed "
"to stay close to the target bot at 10 successive stops, it will lead you to "
"the finishing pad, and the exercise is over. At every stop, the target bot "
"checks that you are there. If you are not there, you must start over again."
msgstr ""

#. type: \b; header
#: levels/exercises/chapter004/level005/help/help.E.txt:4
#, no-wrap
msgid "General principle"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:6
#, no-wrap
msgid "Repeat forever :\n"
msgstr ""

#. type: Bullet: 'o'
#: levels/exercises/chapter004/level005/help/help.E.txt:6
#, no-wrap
msgid "Look for the target bot."
msgstr ""

#. type: Bullet: 'o'
#: levels/exercises/chapter004/level005/help/help.E.txt:7
#, no-wrap
msgid "Calculate the distance to the bot."
msgstr ""

#. type: Bullet: 'o'
#: levels/exercises/chapter004/level005/help/help.E.txt:8
#, no-wrap
msgid "if the distance to the target bot is less than 5m, move backward."
msgstr ""

#. type: Bullet: 'o'
#: levels/exercises/chapter004/level005/help/help.E.txt:9
#, no-wrap
msgid "Otherwise, calculate the direction of the target bot, and move towards it."
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:12
#, no-wrap
msgid ""
"As many times before, use <code><a cbot|while>while</a> (true)</code> in "
"order to perform the infinite loop:"
msgstr ""

#. type: \s; block (usually verbatim code)
#: levels/exercises/chapter004/level005/help/help.E.txt:16
#, no-wrap
msgid ""
"<code>while (true)\n"
"{\n"
"\t</code>instructions to be repeated ...<c/>\n"
"}"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:18
#, no-wrap
msgid ""
"Look for the target bot with the instruction <code><a "
"cbot|radar>radar</a></code>:"
msgstr ""

#. type: \s; block (usually verbatim code)
#: levels/exercises/chapter004/level005/help/help.E.txt:19
#, no-wrap
msgid "<c/>\ttarget = radar(TargetBot);"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:21
#, no-wrap
msgid "You do not have to test if the radar found a target bot: there must be one."
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:23
#, no-wrap
msgid ""
"Use the instruction <code><a cbot|dist>distance</a>( , )</code> to calculate "
"the distance between two points. The first point will be the position of "
"your own bot, given by <code>position</code>. The second point is the "
"position of the target bot, given by <code>target.position</code>."
msgstr ""

#. type: \s; block (usually verbatim code)
#: levels/exercises/chapter004/level005/help/help.E.txt:24
#, no-wrap
msgid "<c/>len = distance(position, target.position);"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:30
#, no-wrap
msgid ""
"If the distance to the target bot is smaller than 5m, move backward with a "
"speed inversely proportional to the distance: the closer you are to the bot, "
"the faster you must move backward.\n"
"\tDistance = 5.0 meters -> speed =  0.0\n"
"\tDistance = 2.5 meters -> speed = -0.5\n"
"\tDistance = 0.0 meters -> speed = -1.0\n"
"You can use the <a cbot|expr>expression</a> <code>distance/5-1</code> in "
"order to achieve this, together with the <code><a cbot|if>if</a></code> to "
"test if the target is closer than 5m:"
msgstr ""

#. type: \s; block (usually verbatim code)
#: levels/exercises/chapter004/level005/help/help.E.txt:34
#, no-wrap
msgid ""
"<c/>if ( len < 5 )  // too close ?\n"
"{\n"
"\tmotor(len/5-1, len/5-1);  // moves backward\n"
"}"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:36
#, no-wrap
msgid ""
"If the distance to the target is greater than 5m, move towards the "
"target. First calculate the angle necessary to face the target with the "
"instruction <code><a cbot|direct>direction</a></code>. You can then adjust "
"the speed of the right-hand and left-hand motor in order to follow the "
"target:"
msgstr ""

#. type: \s; block (usually verbatim code)
#: levels/exercises/chapter004/level005/help/help.E.txt:48
#, no-wrap
msgid ""
"<c/>else\n"
"{\n"
"\tdir = direction(target.position);\n"
"\tif ( dir >= 0 )  // target on the left side?\n"
"\t{\n"
"\t\tmotor(1-dir/90, 1);\n"
"\t}\n"
"\telse  // target on the right side?\n"
"\t{\n"
"\t\t<n/>it is up to you to fill in<c/>\n"
"\t}\n"
"}"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:55
#, no-wrap
msgid ""
"When the target is on your left, <code>dir</code> takes a positive value, "
"ranging between 0 and 180. The <a cbot|expr>expression</a> "
"<code>1-dir/90</code> returns a speed ranging between 1 and -1, according to "
"the direction:\n"
"\tdirection =   0 -> speed =  1.0\n"
"\tdirection =  45 -> speed =  0.5\n"
"\tdirection =  90 -> speed =  0.0\n"
"\tdirection = 135 -> speed = -0.5\n"
"\tdirection = 180 -> speed = -1.0"
msgstr ""

#. type: Image filename
#: levels/exercises/chapter004/level005/help/help.E.txt:56
#, no-wrap
msgid "radar2"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:58
#, no-wrap
msgid ""
"When the target is on the right side, <code>dir</code> is negative, ranging "
"between 0 and -180."
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:60
#, no-wrap
msgid ""
"The only task left for you now is to declare the <a cbot|var>variables</a> "
"that you use in the program. <code>target</code> is of type "
"<code>object</code>, whereas <code>dir</code> and <code>len</code> are of "
"type <code>float</code>."
msgstr ""

#. type: \t; header
#: levels/exercises/chapter004/level005/help/help.E.txt:61
#, no-wrap
msgid "See also"
msgstr ""

#. type: Plain text
#: levels/exercises/chapter004/level005/help/help.E.txt:62
#, no-wrap
msgid ""
"<a cbot>Programming</a>, <a cbot|type>types</a> and <a "
"cbot|category>categories</a>."
msgstr ""