# 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. # # msgid "" msgstr "" "Project-Id-Version: PACKAGE VERSION\n" "POT-Creation-Date: 2013-11-11 09:56+0100\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 #: train302.languagecode:1 #, no-wrap msgid "E" msgstr "R" #. type: Title-text #: train302/scene.txt:1 #, no-wrap msgid "train302:Follow with variables" msgstr "train302:За переменными" #. type: Resume-text #: train302/scene.txt:2 #, no-wrap msgid "train302:Use variables in order to store the parameters of the path." msgstr "train302:С помощью переменных сохраните параметры пути." #. type: ScriptName-text #: train302/scene.txt:3 #, no-wrap msgid "train302:Move" msgstr "train302:Move" #. type: \b; header #: train302-help/tmove2.txt:1 #, no-wrap msgid "Exercise" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:4 #, no-wrap msgid "" "This exercise is very similar to the previous one. The bot must move exactly in the same way, but when writing the program, you must use a new concept that is extremely important in programming: variables.\n" "We saw that all the pads are at a distance form each other of 20 meters. And all the rotations performed consist in 90 degree angles. Instead of rewriting the same values over and over again in the program, we can store them in a variable: " msgstr "" #. type: Plain text #: train302-help/tmove2.txt:7 #, no-wrap msgid "" "Instead of:\n" "\tmove(20);" msgstr "" #. type: \s; block (usually verbatim code) #: train302-help/tmove2.txt:11 #, no-wrap msgid "" "\tturn(90);\n" "\tmove(20);\n" "\tturn(-90);\n" "\t..." msgstr "" #. type: Plain text #: train302-help/tmove2.txt:14 #, no-wrap msgid "" "We write :\n" "\tdist = 20;" msgstr "" #. type: \s; block (usually verbatim code) #: train302-help/tmove2.txt:20 #, no-wrap msgid "" "\tdir = 90;\n" "\tmove(dist);\n" "\tturn(dir);\n" "\tmove(dist);\n" "\tturn(-dir);\n" "\t..." msgstr "" #. type: \b; header #: train302-help/tmove2.txt:21 #, no-wrap msgid "Variables" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:23 #, no-wrap msgid "A variable is composed of three elements: \n" msgstr "" #. type: \t; header #: train302-help/tmove2.txt:23 train302-help/tmove2.txt:27 #, no-wrap msgid "The name" msgstr "" #. type: Bullet: '2)' #: train302-help/tmove2.txt:24 #, no-wrap msgid "The type of the content" msgstr "" #. type: \t; header #: train302-help/tmove2.txt:25 train302-help/tmove2.txt:38 #, no-wrap msgid "The content" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:29 #, no-wrap msgid "Use the name to refer to a variable. For example, instead of writing move(20);, write move(dist);: \"dist\" is the name of the variable. You can choose almost any name for a variable, for example dist, dir, p2, a, x, nothing_2_grab, etc." msgstr "" #. type: \t; header #: train302-help/tmove2.txt:30 #, no-wrap msgid "The type" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:32 #, no-wrap msgid "The type of a variable determines what kind of information the variable can contain. According to the type, a variable can contain a whole number, a real number, a character string, the coordinates of a point, etc. Here is a list with the most common variable types: \n" msgstr "" #. type: Bullet: 'o' #: train302-help/tmove2.txt:32 #, no-wrap msgid "int for a whole number (12, -500, etc.)" msgstr "" #. type: Bullet: 'o' #: train302-help/tmove2.txt:33 #, no-wrap msgid "float for a real number (3.14, 0.2, -99.98, etc.)" msgstr "" #. type: Bullet: 'o' #: train302-help/tmove2.txt:34 #, no-wrap msgid "string for a character string (\"Hello!\", \"Nothing to grab\", etc.)" msgstr "" #. type: Bullet: 'o' #: train302-help/tmove2.txt:35 #, no-wrap msgid "point for the x,y,z-coordinates of a point in space" msgstr "" #. type: Bullet: 'o' #: train302-help/tmove2.txt:36 #, no-wrap msgid "object for the information about an object (bot, building, etc.) " msgstr "" #. type: Plain text #: train302-help/tmove2.txt:40 #, no-wrap msgid "The content of a variable can be a number, a string, coordinates, etc., according to the type of the variable. The content of a variable can change many times during the execution of a program. " msgstr "" #. type: Plain text #: train302-help/tmove2.txt:42 #, no-wrap msgid "Before you can use a variable, you have to declare it. For example, before you can use the two variables dist and dir, you must declare them with the following lines: " msgstr "" #. type: \s; block (usually verbatim code) #: train302-help/tmove2.txt:45 #, no-wrap msgid "" "\tfloat dist;\n" "\tfloat dir;" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:47 #, no-wrap msgid "Now you can use the two variables. To put the value 20 into dist and 90 into dir, write:" msgstr "" #. type: \s; block (usually verbatim code) #: train302-help/tmove2.txt:50 #, no-wrap msgid "" "\tdist = 20;\n" "\tdir = 90;" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:52 #, no-wrap msgid "Now you can move and turn the bot with the instructions move and turn:" msgstr "" #. type: \s; block (usually verbatim code) #: train302-help/tmove2.txt:55 #, no-wrap msgid "" "\tmove(dist);\n" "\tturn(dir);" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:57 #, no-wrap msgid "You can also use a whole mathematical expression instead of just the variable:" msgstr "" #. type: \s; block (usually verbatim code) #: train302-help/tmove2.txt:60 #, no-wrap msgid "" "\tmove(dist+100);\n" "\tturn(-dir);" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:62 #, no-wrap msgid "The latter instruction will be needed to turn the bot right. " msgstr "" #. type: Plain text #: train302-help/tmove2.txt:64 #, no-wrap msgid "Now, rewrite the program of the previous exercise, but use a variable for the distance and another variable for the angle of the rotation. " msgstr "" #. type: \t; header #: train302-help/tmove2.txt:65 #, no-wrap msgid "See also" msgstr "" #. type: Plain text #: train302-help/tmove2.txt:66 #, no-wrap msgid "Programming, types and categories." msgstr ""