Hda library

.github/workflows/build.yml

@@ -0,0 +1,53 @@
+name: 🛠️ Build HEGo
+on:
+  push:
+    branches:
+      - main # or your preferred branch
+
+jobs:
+  make-submodule:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+
+      - name: Create or update release branch
+        run: |
+          # Get commit info for descriptive message
+          COMMIT_SHA="${{ github.sha }}"
+          COMMIT_MESSAGE=$(git log -1 --pretty=format:"%s" $COMMIT_SHA)
+          COMMIT_AUTHOR=$(git log -1 --pretty=format:"%an" $COMMIT_SHA)
+          SHORT_SHA=$(echo $COMMIT_SHA | cut -c1-7)
+
+          # Create new release branch from main or update existing one
+          git checkout -B release
+
+          # Clear everything except .git
+          find . -maxdepth 1 ! -name '.git' ! -name '.' -exec rm -rf {} +
+
+          # Copy README.md to addon folder first, then copy addon contents to root
+          git checkout main -- README.md demo/addons/hego
+          cp README.md demo/addons/hego/
+
+          # Fix image paths in README.md for new structure
+          sed -i 's|demo/addons/hego/assets/|assets/|g' demo/addons/hego/README.md
+
+          cp -r demo/addons/hego/* .
+          rm -rf demo
+
+          # Add and commit changes with descriptive message
+          git add .
+          git commit -m "Release: Update addon for submodule use
+
+          Based on commit $SHORT_SHA by $COMMIT_AUTHOR:
+          $COMMIT_MESSAGE" || echo "No changes to commit"
+
+          # Push to release branch
+          git push origin release --force

README.md

@@ -13,10 +13,21 @@
 - 🎥 **[Introduction Video](https://youtu.be/cviGlmKmFQ8)** - Visual walkthrough
 
 ### Quick Install
+
+**Option 1: Git Submodule (Recommended)**
+```bash
+# Add HEGo as a submodule in your Godot project
+git submodule add -b release https://github.com/peterprickarz/hego.git addons/hego
+git submodule update --init --recursive
+```
+
+**Option 2: Manual Download**
 1. Download the latest release
 2. Extract to your Godot project's `addons/` folder
 3. Enable the plugin in Project Settings
 
+> **Note**: The `release` branch is automatically updated with each commit to `main` and contains only the addon files, making it perfect for submodule use.
+
 ## Features
 
 - **Scriptable API**: Built with GDScript integration in mind for maximum flexibility

demo/addons/hego/HEGoNode3D.gd

@@ -1,14 +1,14 @@
 @icon('res://addons/hego/assets/houdini.svg')
 @tool
 extends Node3D
-
 class_name HEGoNode3D
 
-# The asset definition name in Houdini, e.g. Sop/my_tool.hda
+@export_tool_button('Select HDA', "FileDialog") var select_hda_btn = _show_select_hda_dialog
+## The asset definition name in Houdini, e.g. Sop/my_tool.hda
 @export var asset_name: String
-# Parm stash stores the parameters as a byte blob which stores parms between sessions
+## Parm stash stores the parameters as a byte blob which stores parms between sessions
 @export var parm_stash: PackedByteArray
-# Input stash to store references to the inputs between sessions
+## Input stash to store references to the inputs between sessions
 @export var input_stash: Array
 
 
@@ -17,6 +17,7 @@ var hego_asset_node: HEGoAssetNode
 # Create var to store references to the input and merge nodes in the session
 var hego_input_nodes: Dictionary
 
+
 func cook():
 	# Ensure valid AssetNode object
 	if not hego_asset_node: hego_asset_node = HEGoAssetNode.new()
@@ -107,14 +108,14 @@ func cook():
 	handle_mesh_output()
 	handle_multimesh_output()
 	handle_object_spawn_output()
-
+
+
 func handle_mesh_output():
 	# use config to fetch output mesh
 	var fetch_surfaces_default_config = load("res://addons/hego/surface_filters/fetch_surfaces_default.tres")
 	# retrieve dictionary output, containing the mesh in godots surface_array format
 	var dict = hego_asset_node.fetch_surfaces(fetch_surfaces_default_config)
 	for hego_mesh_instance_key in dict.keys():
-
 		var arr_mesh = ArrayMesh.new()
 		var surface_id = 0
 		for hego_material_key in dict[hego_mesh_instance_key]:
@@ -226,9 +227,8 @@ func handle_mesh_output():
 				mesh_instance.create_convex_collision()
 			elif hego_col_type == 3:
 				mesh_instance.create_trimesh_collision()
-
 
-			
+
 func handle_object_spawn_output():
 	print("[HEGoNode3D]: Handling Object Spawn Output")
 	var fetch_points_config = load("res://addons/hego/point_filters/fetch_points_default_object_spawning.tres")
@@ -371,6 +371,7 @@ func handle_object_spawn_output():
 		# Log for debugging
 		#print("[HEGoNode3D]: Spawned %s at %s under %s" % [new_node.name, p, parent_node.get_path()])
 
+
 # Helper function to apply custom properties from a nested dictionary
 func apply_custom_properties(obj: Object, properties: Dictionary):
 	for key in properties.keys():
@@ -410,6 +411,7 @@ func apply_custom_properties(obj: Object, properties: Dictionary):
 		else:
 			push_warning("[HEGoNode3D]: Invalid property format for %s, expected dictionary with hego_val" % key)
 
+
 # Helper function to set a single property
 func set_property(obj: Object, property: String, value):
 	var prop_info = obj.get_property_list().filter(func(p): return p.name == property)
@@ -426,6 +428,7 @@ func set_property(obj: Object, property: String, value):
 	else:
 		push_warning("[HEGoNode3D]: Property %s does not exist on %s, skipping" % [property, obj.get_class()])
 
+
 # Helper function to check type compatibility
 func is_compatible_type(value, expected_type: int, expected_class: String) -> bool:
 	var actual_type = typeof(value)
@@ -451,6 +454,7 @@ func is_compatible_type(value, expected_type: int, expected_class: String) -> bo
 
 	return false
 
+
 func handle_multimesh_output():
 	print("[HEGoNode3D]: Handling Multimesh Output")
 	var fetch_points_config = load("res://addons/hego/point_filters/fetch_points_default_multimesh_instancing.tres")
@@ -614,6 +618,7 @@ func float_to_int_triplet_dict(float_array: Array, int_array: Array) -> Dictiona
 
 	return result
 
+
 func array_to_index_dict(float_array: Array) -> Dictionary:
 	var result: Dictionary = {}
 
@@ -625,7 +630,8 @@ func array_to_index_dict(float_array: Array) -> Dictionary:
 			result[value] = [i]
 
 	return result
-
+
+
 func update_hego_input_node(hego_input_node, input_node_path, settings):
 	var scene_root = get_tree().edited_scene_root
 	var input = scene_root.get_node_or_null(input_node_path)
@@ -642,7 +648,7 @@ func update_hego_input_node(hego_input_node, input_node_path, settings):
 	else:
 		print("[HEGoNode3D]: Input is neither Path3D nor MeshInstance3D")
 	return hego_input_node
-	
+
 
 func create_hego_input_node(input_node_path, settings):
 	var scene_root = get_tree().edited_scene_root
@@ -660,21 +666,27 @@ func create_hego_input_node(input_node_path, settings):
 		print("[HEGoNode3D]: Input is neither Path3D nor MeshInstance3D")
 	return input_node
 
+
 func hego_use_bottom_panel():
 	return true
 
+
 func hego_get_asset_node():
 	return hego_asset_node;
 
+
 func hego_stash_parms(preset: PackedByteArray):
 	parm_stash = preset
-
+
+
 func hego_get_parm_stash(preset: PackedByteArray):
 	return parm_stash
-
+
+
 func hego_get_input_stash():
 	return input_stash
-
+
+
 func hego_set_input_stash(input_array: Array):
 	# input_array is an array of inputs, as each Houdini input can combine
 	# multiple inputs, each input is an array itself, storing node names and ids
@@ -693,15 +705,18 @@ func hego_set_input_stash(input_array: Array):
 		result.append(input_dict)
 	input_stash = result
 
+
 func hego_get_asset_name():
 	return asset_name
-
+
+
 func repeat_indent(indent: int) -> String:
 	var result := ""
 	for i in range(indent):
 		result += "    " # 4 spaces
 	return result
 
+
 func pretty_print(value, indent := 0) -> String:
 	var indent_str = repeat_indent(indent)
 	var next_indent_str = repeat_indent(indent + 1)
@@ -727,3 +742,48 @@ func pretty_print(value, indent := 0) -> String:
 
 	else:
 		return str(value)
+
+
+func _show_select_hda_dialog():
+	if Engine.is_editor_hint():
+		var viewport = EditorInterface.get_editor_viewport_3d()
+		var picker_scene = preload("res://addons/hego/ui/asset_picker_dialog.tscn")
+		var picker = picker_scene.instantiate()
+
+		# Add to the scene tree temporarily
+		viewport.add_child(picker)
+
+		# Connect the signal to handle the selection
+		picker.asset_selected.connect(_on_asset_selected)
+
+		# Show the dialog
+		picker._populate_tree()
+		picker.popup_centered()
+
+
+func _on_asset_selected(selected_asset: String):
+	# Clear old HDA data when selecting a new asset
+	_clear_hda_data()
+
+	asset_name = selected_asset
+	notify_property_list_changed()
+	print("[HEGoNode3D]: Selected asset: ", selected_asset)
+
+func _clear_hda_data():
+	# Reset the asset node's internal HAPI node ID to force re-instantiation
+	if hego_asset_node:
+		hego_asset_node.reset_node_id()
+
+	# Clear parameter stash so we start fresh
+	parm_stash = PackedByteArray()
+
+	# Clear input references
+	input_stash.clear()
+	hego_input_nodes.clear()
+
+	# Clear any existing output nodes
+	var outputs_node = get_node_or_null("Outputs")
+	if outputs_node:
+		outputs_node.queue_free()
+
+	print("[HEGoNode3D]: Cleared old HDA data and reset node ID")

demo/addons/hego/hego.gd

@@ -22,13 +22,37 @@ func _enter_tree():
 	# Add HEGo project settings
 	_add_project_settings()
 
+
 func _exit_tree():
 	# Clean-up of the plugin goes here.
+	print("[HEGo]: Plugin exiting, cleaning up Houdini session...")
+
+	# Stop any active Houdini session
+	_cleanup_houdini_session()
+
 	if editor_selection and editor_selection.selection_changed.is_connected(_on_selection_changed):
 		editor_selection.selection_changed.disconnect(_on_selection_changed)
 
 	remove_import_plugin(import_plugin)
 	import_plugin = null
+
+	# Remove bottom panel
+	if bottom_panel:
+		remove_control_from_bottom_panel(bottom_panel)
+		bottom_panel = null
+
+	print("[HEGo]: Plugin cleanup completed")
+
+
+func _cleanup_houdini_session():
+	if HEGoAPI.get_singleton() and HEGoAPI.get_singleton().is_session_active():
+		print("[HEGo]: Stopping active Houdini session...")
+		var stop_success = HEGoAPI.get_singleton().stop_session()
+		if stop_success:
+			print("[HEGo]: Houdini session stopped successfully")
+		else:
+			print("[HEGo]: Warning: Failed to stop Houdini session")
+
 
 func _on_selection_changed():
 	var selected_nodes = editor_selection.get_selected_nodes()
@@ -39,6 +63,7 @@ func _on_selection_changed():
 				if bottom_panel:
 					bottom_panel.update_hego_asset_node(selected_node)
 
+
 func _add_project_settings():
 	# Add Houdini installation path setting if it doesn't exist
 	var setting_name = "hego/houdini_installation_path"