add helper function to resolve input port value to deck node

classes/deck/deck_node.gd

@@ -278,6 +278,23 @@ func _post_load() -> void:
 	pass
 
 
+## A helper function to get a value on an input port. Returns the best match in the following
+## order of priority:[br]
+## 1. The direct result of [method request value]. [br]
+## 2. The result of [method Port.value_callback]. [br]
+## 3. The input [Port] at index [param input_port]'s stored [member Port.value]. [br]
+## 4. [code]null[/code].
+func resolve_input_port_value(input_port: int) -> Variant:
+	if request_value(input_port) != null:
+		return request_value(input_port)
+	elif get_input_ports()[input_port].value_callback.get_object() && get_input_ports()[input_port].value_callback.call() != null:
+		return get_input_ports()[input_port].value_callback.call()
+	elif get_input_ports()[input_port].value != null:
+		return get_input_ports()[input_port].value
+	else:
+		return null
+
+
 ## Returns a [Dictionary] representation of this node.
 func to_dict(with_meta: bool = true) -> Dictionary:
 	var d := {

classes/deck/nodes/dictionary_get_key.gd

@@ -29,17 +29,8 @@ func _value_request(_on_port: int) -> Variant:
 	if d == null:
 		return null
 
-	var key = get_value_for_input_port(1)
+	var key = resolve_input_port_value(1)
 	if key == null:
 		return null
 
 	return d.get(key)
-
-
-func get_value_for_input_port(port: int) -> Variant:
-	if request_value(port) != null:
-		return request_value(port)
-	elif get_input_ports()[port].value_callback.get_object() && get_input_ports()[port].value_callback.call() != null:
-		return get_input_ports()[port].value_callback.call()
-	else:
-		return null

classes/deck/nodes/if_true.gd

@@ -27,7 +27,7 @@ func _receive(to_input_port: int, data: Variant, extra_data: Array = []) -> void
 	if to_input_port != 1:
 		return
 
-	if request_value(0):
+	if resolve_input_port_value(0):
 		send(0, data, extra_data)
 	elif ports[0].value:
 		send(0, data, extra_data)

classes/deck/nodes/print.gd

@@ -34,12 +34,8 @@ func _receive(to_input_port: int, data: Variant, extra_data: Array = []) -> void
 	if to_input_port != 1:
 		return
 
-	var data_to_print
+	var data_to_print = resolve_input_port_value(0)
-	if request_value(0) != null:
+	if data_to_print == null:
-		data_to_print = str(request_value(0))
-	elif get_input_ports()[0].value_callback.get_object() && get_input_ports()[0].value_callback.call() != "":
-		data_to_print = str(get_input_ports()[0].value_callback.call())
-	else:
 		data_to_print = str(data)
 
 	times_activated += 1

classes/deck/nodes/process_node.gd

@@ -30,11 +30,7 @@ func _event_received(event_name: StringName, event_data: Dictionary = {}) -> voi
 	if event_name != &"process":
 		return
 
-	var run := false
+	var run := resolve_input_port_value(0) != null
-	if request_value(0) != null:
-		run = request_value(0)
-	elif ports[0].value_callback.get_object() && ports[0].value_callback.call() != null:
-		run = ports[0].value_callback.call()
 
 	if !run:
 		return

classes/deck/nodes/set_deck_var.gd

@@ -36,8 +36,8 @@ func _receive(to_input_port: int, _data: Variant, _extra_data: Array = []) -> vo
 	if to_input_port != 2:
 		return
 
-	var var_name: String = get_value_for_port(0)
+	var var_name: String = resolve_input_port_value(0)
-	var var_value: Variant = get_value_for_port(1)
+	var var_value: Variant = resolve_input_port_value(1)
 
 	_belonging_to.variable_stack[var_name] = var_value
 
@@ -45,6 +45,7 @@ func _receive(to_input_port: int, _data: Variant, _extra_data: Array = []) -> vo
 
 # this can probably go into DeckNode with a different name that makes it clear
 # that it prioritizes call-time resolution
+# EDIT: done, see DeckNode#resolve_input_port_value
 func get_value_for_port(port: int) -> Variant:
 	if request_value(port) != null:
 		return request_value(port)

classes/deck/nodes/twitch_send_chat.gd

@@ -33,8 +33,8 @@ func _receive(to_input_port, data: Variant, extra_data: Array = []):
 		return
 		
 	
-	var msg = get_value_for_input_port(0)
+	var msg = resolve_input_port_value(0)
-	var channel = get_value_for_input_port(1)
+	var channel = resolve_input_port_value(1)
 	
 	if channel == null:
 		
@@ -47,11 +47,3 @@ func _receive(to_input_port, data: Variant, extra_data: Array = []):
 	
 	Connections.twitch.send_chat(msg, channel)
 
-
-func get_value_for_input_port(port: int) -> Variant:
-	if request_value(port) != null:
-		return request_value(port)
-	elif get_input_ports()[port].value_callback.get_object() && get_input_ports()[port].value_callback.call() != null:
-		return get_input_ports()[port].value_callback.call()
-	else:
-		return null

classes/deck/nodes/vector_compose.gd

@@ -25,15 +25,6 @@ func _init() -> void:
 
 
 func _value_request(_on_port: int) -> Dictionary:
-	var x = float(get_value_for_input_port(0))
+	var x = float(resolve_input_port_value(0))
-	var y = float(get_value_for_input_port(1))
+	var y = float(resolve_input_port_value(1))
 	return {"x": x, "y": y}
-
-
-func get_value_for_input_port(port: int) -> Variant:
-	if request_value(port) != null:
-		return request_value(port)
-	elif get_input_ports()[port].value_callback.get_object() && get_input_ports()[port].value_callback.call() != null:
-		return get_input_ports()[port].value_callback.call()
-	else:
-		return null

classes/deck/nodes/vector_multiply.gd

@@ -32,15 +32,6 @@ func _value_request(_on_port: int) -> Variant:
 	if !(v as Dictionary).has("x") || !(v as Dictionary).has("y"):
 		return null
 
-	var s = float(get_value_for_input_port(1))
+	var s = float(resolve_input_port_value(1))
 
 	return {"x": v.x * s, "y": v.y * s}
-
-
-func get_value_for_input_port(port: int) -> Variant:
-	if request_value(port) != null:
-		return request_value(port)
-	elif get_input_ports()[port].value_callback.get_object() && get_input_ports()[port].value_callback.call() != null:
-		return get_input_ports()[port].value_callback.call()
-	else:
-		return null