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38 lines
1.1 KiB
GDScript
38 lines
1.1 KiB
GDScript
# ------------------------------------------------------------------------------
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# This datastructure represents a simple one-to-many relationship. It manages
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# a dictionary of value/array pairs. It ignores duplicates of both the "one"
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# and the "many".
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# ------------------------------------------------------------------------------
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var _items = {}
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# return the size of _items or the size of an element in _items if "one" was
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# specified.
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func size(one=null):
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var to_return = 0
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if(one == null):
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to_return = _items.size()
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elif(_items.has(one)):
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to_return = _items[one].size()
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return to_return
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# Add an element to "one" if it does not already exist
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func add(one, many_item):
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if(_items.has(one) and !_items[one].has(many_item)):
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_items[one].append(many_item)
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else:
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_items[one] = [many_item]
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func clear():
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_items.clear()
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func has(one, many_item):
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var to_return = false
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if(_items.has(one)):
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to_return = _items[one].has(many_item)
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return to_return
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func to_s():
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var to_return = ''
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for key in _items:
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to_return += str(key, ": ", _items[key], "\n")
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return to_return
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