From e127c814f5be0022d8d3d20c5121cab680148db2 Mon Sep 17 00:00:00 2001
From: easynam <easynam@gmail.com>
Date: Thu, 7 Oct 2021 20:06:35 +0100
Subject: [PATCH] Add hacky implementation of group instances

Adds a button that makes groups with names like copy_X copy their
contents from other groups.
---
 .../panels/graph_edit/graph_edit.gd           | 37 +++++++++++++++++++
 .../panels/graph_edit/graph_edit.tscn         | 10 ++++-
 2 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/material_maker/panels/graph_edit/graph_edit.gd b/material_maker/panels/graph_edit/graph_edit.gd
index 3ca6764a..42d8bde0 100644
--- a/material_maker/panels/graph_edit/graph_edit.gd
+++ b/material_maker/panels/graph_edit/graph_edit.gd
@@ -708,3 +708,40 @@ func on_drop_image_file(file_name : String) -> void:
 func _on_Description_descriptions_changed(short_description, long_description):
 	generator.shortdesc = short_description
 	generator.longdesc = long_description
+
+
+func find_graph_with_label(label: String) -> GraphNode:
+	for c in get_children():
+		if c is GraphNode and c.generator is MMGenGraph && c.generator.get_type_name() == label:
+			return c
+	return null
+
+func _on_ButtonRegenCopies_pressed():
+	for c in get_children():
+		if c is GraphNode and c.generator is MMGenGraph and c.generator.get_type_name().begins_with("copy_"):
+			var gen = c.generator
+			var copy_from_label = gen.get_type_name().substr(5,-1)
+			var label = gen.get_type_name()
+
+			var copy_from = find_graph_with_label(copy_from_label)
+			
+			if copy_from == null:
+				continue
+			
+			var data = copy_from.generator._serialize({})
+			var param_data = copy_from.generator.get_node("gen_parameters")._serialize({})
+			
+			for n in gen.get_children():
+				gen.remove_child(n)
+				n.queue_free()
+			
+			data.label = label
+			gen._deserialize(data)
+			
+			var params = gen.get_node("gen_parameters")
+			params._deserialize(param_data)
+			gen.fix_remotes()
+	
+	var main_window = get_node("/root/MainWindow")
+	main_window.hierarchy.update_from_graph_edit(self)
+	update()
diff --git a/material_maker/panels/graph_edit/graph_edit.tscn b/material_maker/panels/graph_edit/graph_edit.tscn
index 4f07e484..85796c05 100644
--- a/material_maker/panels/graph_edit/graph_edit.tscn
+++ b/material_maker/panels/graph_edit/graph_edit.tscn
@@ -44,7 +44,7 @@ one_shot = true
 [node name="GraphUI" type="HBoxContainer" parent="."]
 anchor_left = 1.0
 anchor_right = 1.0
-margin_left = -294.0
+margin_left = -698.0
 margin_top = 11.0
 margin_bottom = 24.0
 alignment = 2
@@ -92,6 +92,13 @@ margin_bottom = 24.0
 hint_tooltip = "Show hierarchy"
 icon = SubResource( 4 )
 
+[node name="ButtonRegenCopies" type="Button" parent="GraphUI"]
+margin_left = 551.0
+margin_right = 682.0
+margin_bottom = 24.0
+hint_tooltip = "Copies the contents of groups named X to any other groups named copy_X"
+text = "Regenerate Copies"
+
 [node name="Control" type="Control" parent="GraphUI"]
 margin_left = 282.0
 margin_right = 296.0
@@ -116,3 +123,4 @@ script = ExtResource( 3 )
 [connection signal="toggled" from="GraphUI/SubGraphUI/ButtonTransmitsSeed" to="." method="_on_ButtonTransmitsSeed_toggled"]
 [connection signal="pressed" from="GraphUI/SubGraphUI/ButtonUp" to="." method="on_ButtonUp_pressed"]
 [connection signal="pressed" from="GraphUI/ButtonShowTree" to="." method="_on_ButtonShowTree_pressed"]
+[connection signal="pressed" from="GraphUI/ButtonRegenCopies" to="." method="_on_ButtonRegenCopies_pressed"]