slogo.instruction

Class Heading

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.Heading

public class Heading
extends Instruction

A HEADING instruction has no components: when called, it will return the current heading of the turtle. To evaluate a HEADING instruction, the turtle's getHeading function is called, which is converted to degrees and is returned.

The value returned by evaluating a HEADING instruction is just the HEADING itself. *

Field Summary

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
Heading()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(Context c) Evaluate this instruction in a Context.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Heading

public Heading()

Method Detail

evaluate

public java.lang.Object evaluate(Context c)

Evaluate this instruction in a Context.

Specified by:

evaluate in class Instruction

Parameters:

c - the Context for the evaluation

Returns:

the heading in Degrees

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a String representing this instruction as HEADING