34 lines
1.5 KiB
Plaintext
34 lines
1.5 KiB
Plaintext
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\b;Instruction \c;turn\n;
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Use the instruction \c;turn();\n; to instruct the bot to perform a rotation on itself of a certain number of degrees.
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\b;Basic use
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90 degreed means a quarter turn, 180 degrees means a half turn. A positive angle will perform a counterclockwise rotation, a negative angle means a clockwise rotation. Here are some examples with \c;turn();\n;:
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\c;turn(90);\n; quarter turn to the left
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\c;turn(-90);\n; quarter turn to the right (negative angle)
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\c;turn(180);\n; half turn
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In order to turn the bot towards an object found with the instruction \c;\l;radar\u cbot\radar;();\n;, you must calculate the rotation angle with the instruction \c;\l;direction\u cbot\direct;()\n;:
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\c;
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\s; item = \l;radar\u cbot\radar;(AlienSpider);
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\s; turn(\l;direction\u cbot\direct;(item.position));
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\n;
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After these lines, just fire the cannon, and there is one hostile element less.
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\b;For specialists
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Syntax:
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\s;\c;turn ( angle );\n;
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Turns the bot with a given angle, right or left, without moving either forward or backward.
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\t;angle: \c;\l;float\u cbot\float;\n;
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Angle of the required rotation, in degrees. A positive value turns left, a negative value turns right. \c;turn(180)\n; turns round completely.
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\t;Return value: \c;\l;int\u cbot\int;\n;
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Zero if everything is OK, or a value different from zero if an error occurred.
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\c;== 0 \n;rotation performed
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\c;!= 0 \n;rotation impossible
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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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