Ported over the custom node and custom dock plugins to Godot 3.

Made a new material IO plugin because the old one wasn't working. The new material IO plugin uses JSON instead of a custom
resource because you currently cannot save custom resources from GDScript.

plugins/custom_dock/dock_plugin.gd

@@ -0,0 +1,23 @@
+tool
+extends EditorPlugin
+
+var dock = null
+
+func _enter_tree():
+	# When this plugin node enters tree, add the custom type
+
+	dock = preload("res://addons/custom_dock/custom_dock.scn").instance()
+
+	add_control_to_dock( DOCK_SLOT_LEFT_UL, dock )
+
+func _exit_tree():
+
+	# Remove from docks (must be called so layout is updated and saved)
+	remove_control_from_docks(dock)
+	# Remove the node
+	dock.free()
+
+
+
+
+	

plugins/custom_dock/plugin.cfg

@@ -0,0 +1,14 @@
+[plugin]
+
+name="Custom Dock"
+description="Adds a new Customizable Dock"
+author="Juan Linietsky"
+version="1.0"
+script="dock_plugin.gd"
+
+
+
+
+
+
+

plugins/custom_import_plugin/Custom_material_dock.tscn

@@ -0,0 +1,308 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://addons/custom_import_plugin/Silly_material_creator.gd" type="Script" id=1]
+
+[node name="Silly Material Creator" type="Panel"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_right = 220.0
+margin_bottom = 340.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+script = ExtResource( 1 )
+_sections_unfolded = [ "custom_styles" ]
+
+[node name="Label_dock_name" type="Label" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -110.0
+margin_top = 10.0
+margin_right = 73.0
+margin_bottom = 24.0
+rect_scale = Vector2( 1.2, 1.2 )
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+size_flags_horizontal = 1
+size_flags_vertical = 4
+custom_colors/font_color_shadow = Color( 0, 0, 0, 1 )
+custom_constants/shadow_as_outline = 1
+text = "Silly material creator"
+align = 1
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+_sections_unfolded = [ "Rect", "custom_colors" ]
+
+[node name="Label_albedo" type="Label" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 50.0
+margin_right = 100.0
+margin_bottom = 64.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+size_flags_horizontal = 1
+size_flags_vertical = 4
+text = "Albedo color"
+align = 1
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="ColorPicker_albedo" type="ColorPickerButton" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 70.0
+margin_right = 100.0
+margin_bottom = 90.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+toggle_mode = false
+enabled_focus_mode = 2
+shortcut = null
+group = null
+flat = false
+color = Color( 1, 1, 1, 1 )
+edit_alpha = true
+
+[node name="Label_metallic" type="Label" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 100.0
+margin_right = 100.0
+margin_bottom = 114.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+size_flags_horizontal = 1
+size_flags_vertical = 4
+text = "Metallic strength"
+align = 1
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="HSlider_metallic" type="HSlider" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 120.0
+margin_right = 100.0
+margin_bottom = 136.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 0
+min_value = 0.0
+max_value = 1.0
+step = 0.05
+page = 0.0
+value = 0.0
+exp_edit = false
+rounded = false
+editable = true
+tick_count = 0
+ticks_on_borders = false
+focus_mode = 2
+
+[node name="Label_roughness" type="Label" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 150.0
+margin_right = 100.0
+margin_bottom = 164.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+size_flags_horizontal = 1
+size_flags_vertical = 4
+text = "Roughness strength"
+align = 1
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="HSlider_roughness" type="HSlider" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 170.0
+margin_right = 100.0
+margin_bottom = 186.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 0
+min_value = 0.0
+max_value = 1.0
+step = 0.05
+page = 0.0
+value = 0.0
+exp_edit = false
+rounded = false
+editable = true
+tick_count = 0
+ticks_on_borders = false
+focus_mode = 2
+
+[node name="Button_save" type="Button" parent="."]
+
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 210.0
+margin_right = 100.0
+margin_bottom = 260.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+toggle_mode = false
+enabled_focus_mode = 2
+shortcut = null
+group = null
+text = "Save silly material"
+flat = false
+
+[node name="Button_load" type="Button" parent="."]
+
+editor/display_folded = true
+anchor_left = 0.5
+anchor_top = 0.0
+anchor_right = 0.5
+anchor_bottom = 0.0
+margin_left = -100.0
+margin_top = 270.0
+margin_right = 100.0
+margin_bottom = 330.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+toggle_mode = false
+enabled_focus_mode = 2
+shortcut = null
+group = null
+flat = false
+clip_text = true
+__meta__ = {
+"_edit_group_": true
+}
+
+[node name="Label" type="Label" parent="Button_load"]
+
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_right = 200.0
+margin_bottom = 60.0
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 2
+size_flags_horizontal = 1
+size_flags_vertical = 4
+text = "Load silly material
+and apply to selected node(s)"
+align = 1
+valign = 1
+autowrap = true
+percent_visible = 1.0
+lines_skipped = 0
+max_lines_visible = -1
+
+[node name="Save_FileDialog" type="FileDialog" parent="."]
+
+visible = false
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 150.0
+margin_top = 20.0
+margin_right = 600.0
+margin_bottom = 360.0
+rect_min_size = Vector2( 200, 70 )
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+popup_exclusive = false
+window_title = "Save a File"
+resizable = true
+dialog_hide_on_ok = false
+mode = 4
+access = 0
+filters = PoolStringArray( "*.silly_mat" )
+show_hidden_files = false
+
+[node name="Load_FileDialog" type="FileDialog" parent="."]
+
+visible = false
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_left = 150.0
+margin_top = 20.0
+margin_right = 600.0
+margin_bottom = 360.0
+rect_min_size = Vector2( 200, 70 )
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+popup_exclusive = false
+window_title = "Open a File"
+resizable = true
+dialog_hide_on_ok = false
+mode = 0
+access = 0
+filters = PoolStringArray( "*.silly_mat" )
+show_hidden_files = false
+
+

plugins/custom_import_plugin/Silly_material_creator.gd

@@ -0,0 +1,97 @@
+tool
+extends Panel
+
+var silly_material_resource = preload("res://addons/custom_import_plugin/Silly_material_resource.gd")
+var editor_interface
+
+func _ready():
+	# Connect all of the signals we'll need to save and load silly materials
+	get_node("Button_save").connect("pressed", self, "save_pressed")
+	get_node("Button_load").connect("pressed", self, "load_pressed")
+	get_node("Save_FileDialog").connect("file_selected", self, "save_file_selected")
+	get_node("Load_FileDialog").connect("file_selected", self, "load_file_selected")
+
+
+func save_pressed():
+	get_node("Save_FileDialog").popup_centered()
+
+func load_pressed():
+	get_node("Load_FileDialog").popup_centered()
+
+
+func save_file_selected(path):
+	
+	# Get the values from the sliders and color picker
+	var color = get_node("ColorPicker_albedo").color
+	var metallic = get_node("HSlider_metallic").value
+	var roughness = get_node("HSlider_roughness").value
+	
+	# Make a new silly resource (which in this case actually is a node)
+	# and initialize it
+	var silly_resource = silly_material_resource.new()
+	silly_resource.init()
+	
+	# Assign the values
+	silly_resource.albedo_color = color
+	silly_resource.metallic_strength = metallic
+	silly_resource.roughness_strength = roughness
+	
+	# Make a file, store the silly material as a json string, then close the file.
+	var file = File.new()
+	file.open(path, File.WRITE)
+	file.store_string(silly_resource.make_json())
+	file.close()
+	
+	return true
+
+
+
+func load_file_selected(path):
+	
+	# Using the passed in editor interface, get the selected nodes in the editor
+	var editor_selection = editor_interface.get_selection()
+	var selected_nodes = editor_selection.get_selected_nodes()
+	
+	
+	var file = File.new()
+	var SpatialMaterial_Silly = null
+	
+	# Make a new silly resource (which in this case actually is a node)
+	# and initialize it
+	var silly_resource = silly_material_resource.new()
+	silly_resource.init()
+	
+	# If the file exists, then open it
+	if file.file_exists(path):
+		file.open(path, File.READ)
+		
+		# Get the JSON string and convert it into a silly material.
+		var json_dict_as_string = file.get_line()
+		if json_dict_as_string != null:
+			silly_resource.from_json(json_dict_as_string)
+		else:
+			file.close()
+			return false
+		
+		# Tell the silly resource (actually a node) to make a material
+		SpatialMaterial_Silly = silly_resource.make_material()
+		
+		# Go through the selected nodes and see if they have the 'set_surface_material'
+		# function (which only MeshInstance has by default). If they do, then set the material
+		# to the silly material.
+		for node in selected_nodes:
+			if node.has_method("set_surface_material"):
+				node.set_surface_material(0, SpatialMaterial_Silly)
+		
+		# Close the file and return true (success!)
+		file.close()
+		return true
+	
+	# If the file does not exist, then return false (failure)
+	else:
+		return false
+	
+	
+	# If we somehow get here, then return false (failure)
+	return false
+

plugins/custom_import_plugin/Silly_material_resource.gd

@@ -0,0 +1,61 @@
+tool
+extends Node
+
+# NOTE: in theory this would extend from resource, but until saving and loading resources
+# works in godot, we'll stick with extending from node
+# and using JSON files to save/load data
+#
+# See material_import.gd for more information
+
+
+var albedo_color
+var metallic_strength
+var roughness_strength
+
+func init():
+	albedo_color = Color()
+	metallic_strength = 0
+	roughness_strength = 0
+
+
+# Convert our data into an dictonary so we can convert it
+# into the JSON format
+func make_json():
+	var json_dict = {}
+	
+	json_dict["albedo_color"] = {}
+	json_dict["albedo_color"]["r"] = albedo_color.r
+	json_dict["albedo_color"]["g"] = albedo_color.g
+	json_dict["albedo_color"]["b"] = albedo_color.b
+	
+	json_dict["metallic_strength"] = metallic_strength
+	json_dict["roughness_strength"] = roughness_strength
+	
+	return to_json(json_dict)
+
+
+# Convert the passed in string to a json dictonary, and then
+# fill in our data.
+func from_json(json_dict_as_string):
+	var json_dict = parse_json(json_dict_as_string)
+	
+	albedo_color.r = json_dict["albedo_color"]["r"]
+	albedo_color.g = json_dict["albedo_color"]["g"]
+	albedo_color.b = json_dict["albedo_color"]["b"]
+	
+	metallic_strength = json_dict["metallic_strength"]
+	roughness_strength = json_dict["roughness_strength"]
+	
+	return
+
+
+# Make a SpatialMaterial using our variables.
+func make_material():
+	var mat = SpatialMaterial.new()
+	
+	mat.albedo_color = albedo_color
+	mat.metallic = metallic_strength
+	mat.roughness = roughness_strength
+	
+	return mat
+

plugins/custom_import_plugin/material_import.gd

@@ -0,0 +1,24 @@
+# A simple (and silly) material resource plugin. Allows you to make a really simple material
+# from a custom dock, that you can save and load, and apply to selected MeshInstances.
+#
+# SPECIAL NOTE: This technically should be using EditorImportPlugin and EditorExportPlugin
+# to handle the input and output of the silly material. However, currently you cannot export
+# custom resources in Godot, so instead we're using JSON files instead.
+# |
+# This example should be replaced when EditorImportPlugin and EditorExportPlugin are both
+# fully working and you can save custom resources.
+
+tool
+extends EditorPlugin
+
+var io_material_dialog;
+
+func _enter_tree():
+	
+	io_material_dialog = preload("res://addons/custom_import_plugin/Custom_material_dock.tscn").instance()
+	io_material_dialog.editor_interface = get_editor_interface();
+	
+	add_control_to_dock( DOCK_SLOT_LEFT_UL, io_material_dialog )
+
+func _exit_tree():
+	remove_control_from_docks(io_material_dialog)

plugins/custom_import_plugin/plugin.cfg

@@ -0,0 +1,14 @@
+[plugin]
+
+name="Silly Spatial Material Importer/Exporter"
+description="Imports and exports a 3D Material from an external text file"
+author="TwistedTwigleg"
+version="1.0"
+script="material_import.gd"
+
+
+
+
+
+
+

plugins/custom_node/heart.gd

@@ -0,0 +1,12 @@
+tool
+extends Node2D
+
+
+var heart = preload("res://addons/custom_node/heart.png")
+
+func _draw():
+	draw_texture(heart,-heart.get_size()/2)
+
+func _get_item_rect():
+	#override
+	return Rect2(-heart.get_size()/2,heart.get_size())

plugins/custom_node/heart_plugin.gd

@@ -0,0 +1,18 @@
+tool
+extends EditorPlugin
+
+
+func _enter_tree():
+	# When this plugin node enters tree, add the custom type
+
+	add_custom_type("Heart","Node2D",preload("res://addons/custom_node/heart.gd"),preload("res://addons/custom_node/heart_icon.png"))
+
+func _exit_tree():
+	# When the plugin node exits the tree, remove the custom type
+
+	remove_custom_type("Heart")
+
+
+
+
+	

plugins/custom_node/plugin.cfg

@@ -0,0 +1,14 @@
+[plugin]
+
+name="Heart"
+description="Adds a new Heart node in 2D"
+author="Juan Linietsky"
+version="1.0"
+script="heart_plugin.gd"
+
+
+
+
+
+
+

plugins/readme.txt

@@ -0,0 +1,13 @@
+
+To install these, copy each of these folders to a folder:
+
+addons/
+
+inside your projects, example:
+
+addons/custom_node
+
+To distribute and install from UI, make a zip that contains the folder,
+example:
+
+zip -r custom_node.zip custom_node/*