40 lines
1.6 KiB
Plaintext
40 lines
1.6 KiB
Plaintext
\b;Exercise
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Remote control a robot using an \l;information exchange post\u object\exchange;, so it will transport \l;uranium ore\u object\uranore;.
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The main actors of this exercise are¦:
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1) A \l;sniffer\u object\botsr; (can't carry anything).
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2) An \l;information exchange post\u object\exchange; that receives information from a sender and then transmits it to a receiver.
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3) A \l;grabber\u object\botgr; which waits for orders from the exchange post. You have no way control this robot directly.
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\image tremot1a 16 8;
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An information exchange post stores "name/value" couples. To control the "slave" robot we use just one couple¦:
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name="order", valuer=order number
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The slace robot understands following orders¦:
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\c;
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1 -> grab(); // take an object
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2 -> drop(); // drop an object
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3 -> move(10); // move 10 meters forward
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4 -> move(-10); // move 10 meters backwards
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\n;
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To instruct the slave to move forward 10 meters all you have to do is¦:
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\c;\s; \l;send\u cbot\send;("order", 3, 100); // order 3 -> "move(10)"
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\n;
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After the send instruction we wait for 5 seconds to be sure the move is done.
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\c;\s; \l;wait\u cbot\wait;(5);
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\n;
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Remark: There is a better way for waiting the order has been executed, but we'll see this later in exercise "Remote Control #2".
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To finish the exercise you must¦:
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1) Take the uranium ore
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2) Move forward by 10 meters
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3) Drop the uranium ore
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4) Move backwards by 10 meters
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It's up to you to write the program.
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\t;See also
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\l;Programming\u cbot;, \l;types\u cbot\type; and \l;categories\u cbot\category;.
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