Free Hero Mesh

  object as the current object and continues executing the code with that
  object instead. This new current object is not saved if you return from
  a function or a subroutine call. If it successfully chained, then the
  result is false. If given an object of a different class, an object that
  doesn't exist, or anything other than an object, then it does nothing
  and the result is true.

Chebyshev  ( obj -- number )
  Calculate the Chebyshev distance between this object and the specified
  object. If the specified object is zero, then the result is also zero.

,Chebyshev  ( obj1 obj2 -- number )
  Calculate the Chebyshev distance between thie two specified objects. If
  either specified object is zero, then the result is also zero.

Create  ( class x y image dir -- obj ) **
  Creates a new object at the specified location, and returns it. The
  result is zero if the class is zero, the coordinates are out of range,
  the object cannot be created due to the CollisionLayers, or if the new
  object is destroyed before its CREATE message returns.

cz?  ( any -- bool )

lxor  ( in1 in2 -- out )
  Logical XOR.

m?  ( any -- bool )
  True if the value is a message, or false if it is any other type. Error
  if it is a sound.

Manhattan  ( obj -- number )
  Calculate the Manhattan distance between this object and the specified
  object. If the specified object is zero, then the result is also zero.

,Manhattan  ( obj1 obj2 -- number )
  Calculate the Manhattan distance between thie two specified objects. If
  either specified object is zero, then the result is also zero.

MaxInventory  ( number -- )
  Results in an error and loss of game if the number of different
  inventory items exceeds the given number, otherwise no effect.

mod  ( in1 in2 -- out )
  Unsigned divide in1 by in2 producing the remainder.

  must be a number from 0 to 255. The extra turn is not entered into the
  replay list and does not increase MoveNumber, but otherwise will act
  like any other turn. Popup messages are not removed; they will be
  retained, and these extra turns execute the input phase as though there
  is no popup quiz. (Not implemented yet. Details described here might be
  changed when it is implemented.)

Rel  ( dir -- dir )
  Resolves a relative direction to an absolute direction.

,Rel  ( obj dir -- dir )
  Resolves a relative direction to an absolute direction, using the
  direction of the specified object as the base. If zero is specified
  instead of a valid object, thent the result is the same as the input.

ret  ( -- )
  Exit the current subroutine. If this is a message block, it must either
  leave the stack as it is, or leave it but with one extra value pushed
  which will be the return value from the message call. (This is implied
  at the end of a code block.) For a user defined function call, or a
  subroutine call, these restrictions are not applicable.

  negative, or 0 otherwise.

s?  ( any -- bool )
  True if the value is a string (which may be either a string in the class
  codes or a string in the level), or false if it is any other type. Error
  if it is a sound.

Seek  ( obj -- dir )
  Returns the direction from this object to the specified object. If that
  object is in the same place as this one, returns F. If zero is specified
  then it is an error.

,Seek  ( obj1 obj2 -- dir )
  Returns the direction from obj1 to obj2. If the two objects are in the
  same place, returns F. If either object is zero, then it is an error.

Self  ( -- obj )
  The reference to the current object.

Send  ( message arg1 arg2 -- value )
  Similar to ,Send but this object sends the message to itself.

,Send  ( obj message arg1 arg2 -- value )