39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
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from lnx.logicnode.lnx_nodes import *
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class ValueChangedNode(LnxLogicTreeNode):
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"""Upon activation through the `In` input, this node checks whether
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the given value is different than the value from the last execution
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of this node.
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@output Changed: Activates if the value has changed compared to the
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last time the node was executed or if the node is executed for
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the first time and there is no value for comparison yet.
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@output Unchanged: Activates if the value is the same as it was when
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the node was executed the last time.
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@output Is Initial: Activates if the value is equal to the value at
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the first time the node was executed or if the node is executed
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for the first time. This output works independently of the
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`Changed` or `Unchanged` outputs.
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"""
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bl_idname = 'LNValueChangedNode'
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bl_label = 'Value Changed'
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lnx_version = 2
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def lnx_init(self, context):
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self.add_input('LnxNodeSocketAction', 'In')
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self.add_input('LnxDynamicSocket', 'Value')
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self.add_output('LnxNodeSocketAction', 'Changed')
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self.add_output('LnxNodeSocketAction', 'Unchanged')
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self.add_output('LnxNodeSocketAction', 'Is Initial')
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def get_replacement_node(self, node_tree: bpy.types.NodeTree):
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if self.lnx_version not in (0, 1):
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raise LookupError()
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return NodeReplacement(
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'LNValueChangedNode', self.lnx_version, 'LNValueChangedNode', 2,
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in_socket_mapping={0: 0, 1: 1}, out_socket_mapping={0: 0, 1: 2}
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)
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