Object¶
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class
Object¶ Defined in System.sc.
The base class used for all SCI Objects. It provides some basic operations like asking if an object supports a particular selector, or if an object is subclass of a given class.
Subclasses: Sound, Code, IconItem, Game, Block, Messager, Control, Feature, Cycle, SysWindow, Script, Sync, Print, Motion, MessageObj, ClickMenu, Polygon, File, Timer, TimeOut, Flags, Cue, Region, Event, User, Collection, Cursor.
Methods¶
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new() Returns a clone of itself
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init()
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doit()
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dispose()
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showStr(buffer) Copies the object’s name into the provided buffer.
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showSelf() Prints the object’s name on the screen.
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perform(object [...]) Calls the doit method on object with itself as the first parameter, and forwarding any additional supplied parameters.
Parameters: object (heapPtr) – Any object with a doit method.
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isKindOf(className) Determines if this object is a particular class, or inherits from that class.
Parameters: className (class) – A class name, such as Actor or Room Returns: TRUE is this object is of type className, or inherits from className.
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isMemberOf(theClass) Parameters: theClass (class) – A class, like MoveTo or Feature. Returns: TRUE if this object is an instance of this exact class, otherwise FALSE. Example usage:
(if (gThing isMemberOf: MoveTo) ; Do something... )
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respondsTo(selectorName) Parameters: selectorName (selector) – A property or method selector. Returns: TRUE if this object has selectorName as a property or method. Example usage:
(if (theThing respondsTo: #doit) (theThing doit:) )
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yourself() Returns the object itself. This is a convenient shortcut when you want to call a series of selectors on a new object and then pass that object directly to a function:
// Create a new polygon and add it to the room obstacles. (gRoom addObstacle: ((Polygon new:): type: PBarredAccess points: somePoints size: 4 dynamic: TRUE yourself: ))