alice-teacher Alice 2.4.2 distanceTo problem

[Robert Durtschi]

the "Distance to" integer function will now drag to "if true", but it generates the code line:



    if penguin distanceTo flagpole



and does not give the user a choice of logic comparisons that dragging an integer variable would. The desired line should read:



    if penguin distanceTo flagpole < 1



I will create a simple version of the a2w world that shows the problem.



When I clicked on the Outermost arrow next to the flagpole it indicated an error. Here is the stack trace for the error:



Alice version: 2.4.2
os.name: Windows 7
os.version: 6.1
os.arch: x86
java.vm.name: Java HotSpot(TM) Client VM
java.vm.version: 20.0-b11
user.dir: C:\Users\Bob\Documents\Alice 2.4\Required

Running World
Stopping World
Running World
Stopping World
Running World
Stopping World
Running World
Stopping World
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: firstOperand must represent a Boolean
 at edu.cmu.cs.stage3.alice.authoringtool.util.PopupMenuUtilities.makeBooleanLogicStructure(PopupMenuUtilities.java:1890)
 at edu.cmu.cs.stage3.alice.authoringtool.util.PopupMenuUtilities.makePropertyStructure(PopupMenuUtilities.java:1624)
 at edu.cmu.cs.stage3.alice.authoringtool.viewcontroller.PropertyViewController.updatePopupStructure(PropertyViewController.java:534)
 at edu.cmu.cs.stage3.alice.authoringtool.viewcontroller.PropertyViewController$3.actionPerformed(PropertyViewController.java:137)
 at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
 at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
 at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
 at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
 at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
 at java.awt.Component.processMouseEvent(Component.java:6288)
 at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
 at java.awt.Component.processEvent(Component.java:6053)
 at java.awt.Container.processEvent(Container.java:2041)
 at java.awt.Component.dispatchEventImpl(Component.java:4651)
 at java.awt.Container.dispatchEventImpl(Container.java:2099)
 at java.awt.Component.dispatchEvent(Component.java:4481)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
 at java.awt.Container.dispatchEventImpl(Container.java:2085)
 at java.awt.Window.dispatchEventImpl(Window.java:2478)
 at java.awt.Component.dispatchEvent(Component.java:4481)
 at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:643)
 at java.awt.EventQueue.access$000(EventQueue.java:84)
 at java.awt.EventQueue$1.run(EventQueue.java:602)
 at java.awt.EventQueue$1.run(EventQueue.java:600)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
 at java.awt.EventQueue$2.run(EventQueue.java:616)
 at java.awt.EventQueue$2.run(EventQueue.java:614)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:613)
 at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
 at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
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