1.0.0

Author: Swarkin

.gitattributes

@@ -1,2 +1 @@
-# Auto detect text files and perform LF normalization
-* text=auto
+* text=auto eol=lf

.gitignore

@@ -1,15 +1,3 @@
-# Godot 4+ specific ignores
 .godot/
-
-# Godot-specific ignores
-.import/
-export.cfg
-export_presets.cfg
-
-# Imported translations (automatically generated from CSV files)
-*.translation
-
-# Mono-specific ignores
-.mono/
-data_*/
-mono_crash.*.json
+addons/
+.editorconfig

caret-right.svg

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bhop1cdyv78s4"
+path="res://.godot/imported/caret-right.svg-fef3695546786de47ae107bddc677593.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://caret-right.svg"
+dest_files=["res://.godot/imported/caret-right.svg-fef3695546786de47ae107bddc677593.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

caret-right.svg.import

@@ -0,0 +1,152 @@
+extends GraphEdit
+
+const TYPE_FLOW := 69
+const TYPE_ANY := 42
+
+@export var verbose := false
+
+class GraphNodeRepr:
+	var node: GraphNode
+	var in_connections: Array[GraphNodeConnection]
+	var out_connections: Array[GraphNodeConnection]
+
+	func _init(_node: GraphNode) -> void:
+		node = _node
+
+	func flow_next() -> GraphNodeRepr:
+		var conn := out_connections[0] as GraphNodeConnection if !out_connections.is_empty() else null
+		return conn.to_node if conn else null
+
+	func get_input(port_idx: int, default = null) -> Variant:
+		var conn: GraphNodeConnection
+		for c in in_connections:
+			if c.to_port != port_idx: continue
+			conn = c
+
+		if conn == null:
+			print("No connection for port %d" % port_idx)
+			return default
+
+		var in_node := conn.from_node.node
+
+		if in_node is ValueGraphNode:
+			return in_node.get_value()
+		elif in_node is ExecutableGraphNode:
+			push_error("Not implemented")
+		else:
+			push_error("Invalid connection")
+
+		return default
+
+class GraphNodeConnection:
+	var from_node: GraphNodeRepr
+	var from_port: int
+	var to_node: GraphNodeRepr
+	var to_port: int
+
+	func _init(d: Dictionary, nodes: Dictionary[StringName, GraphNodeRepr]) -> void:
+		from_node = nodes[d["from_node"]]
+		from_port = d["from_port"]
+		to_node = nodes[d["to_node"]]
+		to_port = d["to_port"]
+
+
+func execute() -> void:
+	if verbose: print("Executing...")
+	var nodes: Dictionary[StringName, GraphNodeRepr]
+
+	#region parsing
+	for node in get_children() as Array[Control]:
+		if node is not GraphNode: continue
+		nodes[node.name] = GraphNodeRepr.new(node)
+
+	for conn in connections:
+		var from := nodes[conn["from_node"] as StringName]
+		var to := nodes[conn["to_node"] as StringName]
+		var from_conn := GraphNodeConnection.new(conn, nodes)
+		var to_conn := GraphNodeConnection.new(conn, nodes)
+		from.out_connections.append(from_conn)
+		to.in_connections.append(to_conn)
+	#endregion
+
+	#region logic
+	var ready_node := nodes["ReadyNode"]
+	if verbose:
+		print(ready_node.node.name)
+		print("In:   ", ready_node.in_connections)
+		print("Out:  ", ready_node.out_connections)
+
+	var next := ready_node.flow_next()
+	while next:
+		if verbose:
+			print("\n - ", next.node.name)
+			print("In:   ", next.in_connections)
+			print("Out:  ", next.out_connections)
+
+		var node := next.node as ExecutableGraphNode
+		var args := []
+
+		# resolve inputs
+		for port_idx in node.get_input_port_count():
+			var slot_idx := node.get_input_port_slot(port_idx)
+			var debug := " [Port %d | Slot %d] " % [port_idx, slot_idx]
+
+			var port_type := node.get_slot_type_left(slot_idx)
+			if port_type == TYPE_FLOW:
+				if verbose:
+					debug += "Flow (Skipped)"
+					print(debug)
+				continue
+			elif port_type == TYPE_ANY:
+				debug += "Any"
+			else:
+				debug += type_string(port_type)
+
+			var value = next.get_input(port_idx)
+			if verbose: print(debug, " (%s) | " % type_string(typeof(value)), value)
+			args.append(value)
+
+		if verbose: print("Args: ", args)
+
+		node.execute(args)
+		next = next.flow_next()
+	#endregion
+
+	if verbose: print("\nFinished")
+
+
+func _on_connection_request(from_node: StringName, from_port: int, to_node: StringName, to_port: int) -> void:
+	var from := get_node(str(from_node)) as GraphNode
+	var to := get_node(str(to_node)) as GraphNode
+
+	if from == to:
+		print("Cannot connect to self")
+		return
+
+	for conn in connections:
+		if conn["to_node"] == to_node and conn["to_port"] == to_port:
+			print("Port already used")
+			return
+
+	# only connect flow outputs to flow inputs for dynamic nodes
+	var _out := from.get_output_port_type(from_port)
+	var _in := to.get_input_port_type(to_port)
+	if _out == TYPE_FLOW || _in == TYPE_FLOW:
+		if _out != _in:
+			print("Flow -> Flow connection required")
+			return
+
+	connect_node(from_node, from_port, to_node, to_port)
+
+
+func _on_disconnection_request(from_node: StringName, from_port: int, to_node: StringName, to_port: int) -> void:
+	disconnect_node(from_node, from_port, to_node, to_port)
+
+
+func _on_delete_nodes_request(nodes: Array[StringName]) -> void:
+	for node in nodes:
+		get_node(node as String).queue_free()
+
+		for conn in connections:
+			if conn["from_node"] == node || conn["to_node"] == node:
+				disconnect_node(conn["from_node"], conn["from_port"], conn["to_node"], conn["to_port"])

graph.gd

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+uid://44j7r8skexf1

graph.gd.uid

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+[gd_scene load_steps=5 format=3 uid="uid://qr52aafdvj5l"]
+
+[ext_resource type="Script" uid="uid://c4xjo5mavlg5r" path="res://node_selection.gd" id="1_7mycd"]
+[ext_resource type="Script" uid="uid://44j7r8skexf1" path="res://graph.gd" id="1_h2yge"]
+[ext_resource type="Script" uid="uid://bgdixhn7vioeb" path="res://run.gd" id="4_1bvp3"]
+
+[sub_resource type="StyleBoxEmpty" id="StyleBoxEmpty_7dm0k"]
+
+[node name="Main" type="VBoxContainer"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="TopBar" type="HBoxContainer" parent="."]
+layout_mode = 2
+
+[node name="NodeSelection" type="ScrollContainer" parent="TopBar" node_paths=PackedStringArray("graph", "buttons")]
+layout_mode = 2
+size_flags_horizontal = 3
+follow_focus = true
+horizontal_scroll_mode = 2
+vertical_scroll_mode = 0
+script = ExtResource("1_7mycd")
+graph = NodePath("../../GraphEdit")
+buttons = NodePath("ButtonContainer")
+
+[node name="ButtonContainer" type="HBoxContainer" parent="TopBar/NodeSelection"]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+
+[node name="Run" type="Button" parent="TopBar" node_paths=PackedStringArray("graph")]
+custom_minimum_size = Vector2(100, 50)
+layout_mode = 2
+size_flags_horizontal = 8
+size_flags_vertical = 8
+text = "Run"
+script = ExtResource("4_1bvp3")
+graph = NodePath("../../GraphEdit")
+
+[node name="GraphEdit" type="GraphEdit" parent="."]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_vertical = 3
+theme_override_styles/panel = SubResource("StyleBoxEmpty_7dm0k")
+grid_pattern = 1
+right_disconnects = true
+connection_lines_antialiased = false
+minimap_enabled = false
+show_menu = false
+show_zoom_buttons = false
+show_grid_buttons = false
+show_minimap_button = false
+show_arrange_button = false
+script = ExtResource("1_h2yge")
+verbose = true
+
+[connection signal="connection_request" from="GraphEdit" to="GraphEdit" method="_on_connection_request"]
+[connection signal="delete_nodes_request" from="GraphEdit" to="GraphEdit" method="_on_delete_nodes_request"]
+[connection signal="disconnection_request" from="GraphEdit" to="GraphEdit" method="_on_disconnection_request"]

main.tscn

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+extends Container
+
+const PATH := "res://nodes/"
+const NODE_BUTTON := preload("res://ui/node_button.tscn") as PackedScene
+
+@export var graph: GraphEdit
+@export var buttons: Container
+
+var nodes: Dictionary[String, PackedScene]
+
+func _enter_tree() -> void:
+	for file in DirAccess.get_files_at(PATH):
+		if file.ends_with(".tscn"):
+			var scn := load(PATH+file) as PackedScene
+			nodes[file] = scn
+			var btn := NODE_BUTTON.instantiate() as Button
+			btn.text = file.get_basename().to_pascal_case()
+			btn.pressed.connect(_pressed.bind(file))
+			buttons.add_child(btn)
+
+func _pressed(node: String) -> void:
+	var scn := nodes[node].instantiate() as GraphNode
+	scn.position_offset = graph.scroll_offset
+	graph.add_child(scn)

node_selection.gd

@@ -0,0 +1 @@
+uid://c4xjo5mavlg5r

node_selection.gd.uid

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+class_name ExecutableGraphNode
+extends GraphNode
+
+@warning_ignore("unused_parameter")
+func execute(args: Array) -> void:
+	push_error("Cannot call function on abstract class")

nodes/executable_node.gd

@@ -0,0 +1 @@
+uid://dcx1bl2m38n6b

nodes/executable_node.gd.uid

@@ -0,0 +1,5 @@
+class_name GraphNodePrint
+extends ExecutableGraphNode
+
+func execute(args: Array) -> void:
+	prints(self, args[0])

nodes/print_node.gd

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+uid://c6oxvefk7b6as

nodes/print_node.gd.uid

@@ -0,0 +1,36 @@
+[gd_scene load_steps=3 format=3 uid="uid://cd8lgyd1aojs8"]
+
+[ext_resource type="Texture2D" uid="uid://bhop1cdyv78s4" path="res://caret-right.svg" id="1_3ksu2"]
+[ext_resource type="Script" uid="uid://c6oxvefk7b6as" path="res://nodes/print_node.gd" id="1_gu88u"]
+
+[node name="PrintNode" type="GraphNode"]
+offset_right = 200.0
+offset_bottom = 100.0
+title = "Print"
+ignore_invalid_connection_type = true
+slot/0/left_enabled = true
+slot/0/left_type = 69
+slot/0/left_color = Color(1, 1, 1, 1)
+slot/0/left_icon = ExtResource("1_3ksu2")
+slot/0/right_enabled = true
+slot/0/right_type = 69
+slot/0/right_color = Color(1, 1, 1, 1)
+slot/0/right_icon = ExtResource("1_3ksu2")
+slot/0/draw_stylebox = true
+slot/1/left_enabled = true
+slot/1/left_type = 42
+slot/1/left_color = Color(1, 1, 1, 1)
+slot/1/left_icon = null
+slot/1/right_enabled = false
+slot/1/right_type = 0
+slot/1/right_color = Color(1, 1, 1, 1)
+slot/1/right_icon = null
+slot/1/draw_stylebox = true
+script = ExtResource("1_gu88u")
+
+[node name="String" type="Label" parent="."]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="."]
+layout_mode = 2
+text = "Value"

nodes/print_node.tscn

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+class_name GraphNodeReady
+extends GraphNode

nodes/ready_node.gd

@@ -0,0 +1 @@
+uid://dvwb8u1qywkue

nodes/ready_node.gd.uid

@@ -0,0 +1,25 @@
+[gd_scene load_steps=3 format=3 uid="uid://dwkeqo8f1jixv"]
+
+[ext_resource type="Script" uid="uid://dvwb8u1qywkue" path="res://nodes/ready_node.gd" id="1_7udae"]
+[ext_resource type="Texture2D" uid="uid://bhop1cdyv78s4" path="res://caret-right.svg" id="1_dgv1w"]
+
+[node name="ReadyNode" type="GraphNode"]
+offset_right = 200.0
+offset_bottom = 150.0
+resizable = true
+title = "Ready"
+slot/0/left_enabled = false
+slot/0/left_type = 0
+slot/0/left_color = Color(1, 1, 1, 1)
+slot/0/left_icon = null
+slot/0/right_enabled = true
+slot/0/right_type = 69
+slot/0/right_color = Color(1, 1, 1, 1)
+slot/0/right_icon = ExtResource("1_dgv1w")
+slot/0/draw_stylebox = true
+script = ExtResource("1_7udae")
+
+[node name="Label" type="Label" parent="."]
+layout_mode = 2
+text = "Flow"
+horizontal_alignment = 2