slogo.instruction

Class Xcor

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.Xcor

public class Xcor
extends Instruction

A XCOR instruction has no components: when called, it returns the x coordinate of the turtle's current position. To evaluate a XCOR instruction, the turtle's point is found and the x coordinate is found using the getX method. The x coordinate is rounded to two decimal places and returned.

The value returned by evaluating a XCOR instruction is the instruction itself.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.Double	x

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
Xcor()

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

Field Detail

x

private java.lang.Double x

Constructor Detail

Xcor

public Xcor()

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 current x coordinate

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a String representing this instruction as XCOR