godot/modules/visual_script/doc_classes/VisualScriptCustomNode.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="VisualScriptCustomNode" inherits="VisualScriptNode" category="Core" version="3.0-rc1">
	<brief_description>
		A scripted Visual Script node.
	</brief_description>
	<description>
		A custom Visual Script node which can be scripted in powerful ways.
	</description>
	<tutorials>
	</tutorials>
	<demos>
	</demos>
	<methods>
		<method name="_get_caption" qualifiers="virtual">
			<return type="String">
			</return>
			<description>
				Return the node's title.
			</description>
		</method>
		<method name="_get_category" qualifiers="virtual">
			<return type="String">
			</return>
			<description>
				Return the node's category.
			</description>
		</method>
		<method name="_get_input_value_port_count" qualifiers="virtual">
			<return type="int">
			</return>
			<description>
				Return the count of input value ports.
			</description>
		</method>
		<method name="_get_input_value_port_name" qualifiers="virtual">
			<return type="String">
			</return>
			<argument index="0" name="idx" type="int">
			</argument>
			<description>
				Return the specified input port's name.
			</description>
		</method>
		<method name="_get_input_value_port_type" qualifiers="virtual">
			<return type="int">
			</return>
			<argument index="0" name="idx" type="int">
			</argument>
			<description>
				Return the specified input port's type. See the TYPE_* enum in [@GlobalScope].
			</description>
		</method>
		<method name="_get_output_sequence_port_count" qualifiers="virtual">
			<return type="int">
			</return>
			<description>
				Return the amount of output [b]sequence[/b] ports.
			</description>
		</method>
		<method name="_get_output_sequence_port_text" qualifiers="virtual">
			<return type="String">
			</return>
			<argument index="0" name="idx" type="int">
			</argument>
			<description>
				Return the specified [b]sequence[/b] output's name.
			</description>
		</method>
		<method name="_get_output_value_port_count" qualifiers="virtual">
			<return type="int">
			</return>
			<description>
				Return the amount of output value ports.
			</description>
		</method>
		<method name="_get_output_value_port_name" qualifiers="virtual">
			<return type="String">
			</return>
			<argument index="0" name="idx" type="int">
			</argument>
			<description>
				Return the specified output's name.
			</description>
		</method>
		<method name="_get_output_value_port_type" qualifiers="virtual">
			<return type="int">
			</return>
			<argument index="0" name="idx" type="int">
			</argument>
			<description>
				Return the specified output's type. See the TYPE_* enum in [@GlobalScope].
			</description>
		</method>
		<method name="_get_text" qualifiers="virtual">
			<return type="String">
			</return>
			<description>
				Return the custom node's text, which is shown right next to the input [b]sequence[/b] port (if there is none, on the place that is usually taken by it).
			</description>
		</method>
		<method name="_get_working_memory_size" qualifiers="virtual">
			<return type="int">
			</return>
			<description>
				Return the size of the custom node's working memory. See [method _step] for more details.
			</description>
		</method>
		<method name="_has_input_sequence_port" qualifiers="virtual">
			<return type="bool">
			</return>
			<description>
				Return whether the custom node has an input [b]sequence[/b] port.
			</description>
		</method>
		<method name="_step" qualifiers="virtual">
			<return type="Variant">
			</return>
			<argument index="0" name="inputs" type="Array">
			</argument>
			<argument index="1" name="outputs" type="Array">
			</argument>
			<argument index="2" name="start_mode" type="int">
			</argument>
			<argument index="3" name="working_mem" type="Array">
			</argument>
			<description>
				Execute the custom node's logic, returning the index of the output sequence port to use or a [String] when there is an error.
				
				The [code]inputs[/code] array contains the values of the input ports.
				[code]outputs[/code] is an array whose indices should be set to the respective outputs.
				The [code]start_mode[/code] is usually [code]START_MODE_BEGIN_SEQUENCE[/code], unless you have used the STEP_* constants.
				[code]working_mem[/code] is an array which can be used to persist information between runs of the custom node.
				
				When returning, you can mask the returned value with one of the STEP_* constants.
			</description>
		</method>
	</methods>
	<constants>
		<constant name="START_MODE_BEGIN_SEQUENCE" value="0" enum="StartMode">
			The start mode used the first time when [method _step] is called.
		</constant>
		<constant name="START_MODE_CONTINUE_SEQUENCE" value="1" enum="StartMode">
			The start mode used when [method _step] is called after coming back from a STEP_PUSH_STACK_BIT.
		</constant>
		<constant name="START_MODE_RESUME_YIELD" value="2" enum="StartMode">
			The start mode used when [method _step] is called after resuming from STEP_YIELD_BIT.
		</constant>
		<constant name="STEP_PUSH_STACK_BIT" value="16777216">
			Hint used by [method _step] to tell that control should return to it when there is no other node left to execute.
			This is used by [VisualScriptCondition] to redirect the sequence to the "Done" port after the true/false branch has finished execution.
		</constant>
		<constant name="STEP_GO_BACK_BIT" value="33554432">
			Hint used by [method _step] to tell that control should return back, either hitting a previous STEP_PUSH_STACK_BIT or exiting the function.
		</constant>
		<constant name="STEP_NO_ADVANCE_BIT" value="67108864">
		</constant>
		<constant name="STEP_EXIT_FUNCTION_BIT" value="134217728">
			Hint used by [method _step] to tell that control should stop and exit the function.
		</constant>
		<constant name="STEP_YIELD_BIT" value="268435456">
			Hint used by [method _step] to tell that the function should be yielded.
			Using this requires you to have at least one working memory slot, which is used for the [VisualScriptFunctionState].
		</constant>
	</constants>
</class>