Merge pull request #226 from TwistedTwigleg/3D_IK_Demo

3D IK demo (fixed)

3d/ik/addons/sade/editor_gizmo_texture.png.import

@@ -0,0 +1,33 @@
+[remap]
+
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+type="StreamTexture"
+path.s3tc="res://.import/editor_gizmo_texture.png-be14d96c2d7829c8511766ceb15d5a7f.s3tc.stex"
+path.etc2="res://.import/editor_gizmo_texture.png-be14d96c2d7829c8511766ceb15d5a7f.etc2.stex"
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+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+stream=false
+size_limit=0
+detect_3d=false
+svg/scale=1.0

3d/ik/addons/sade/ik_fabrik.png.import

@@ -0,0 +1,32 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/ik_fabrik.png-c3d637ec075c87710a4a8abbfbd526e1.stex"
+
+[deps]
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+source_file="res://addons/SADE/ik_fabrik.png"
+source_md5="2909090602f64d38ce0bb7314ec7b39d"
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+dest_files=[ "res://.import/ik_fabrik.png-c3d637ec075c87710a4a8abbfbd526e1.stex" ]
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+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
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+size_limit=0
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+svg/scale=1.0

3d/ik/addons/sade/ik_look_at.gd

@@ -0,0 +1,205 @@
+tool
+extends Spatial
+
+export (NodePath) var skeleton_path setget _set_skeleton_path
+export (String) var bone_name = ""
+export (int, "_process", "_physics_process", "_notification", "none") var update_mode = 0 setget _set_update
+export (int, "X-up", "Y-up", "Z-up") var look_at_axis = 1
+export (bool) var use_our_rot_x = false
+export (bool) var use_our_rot_y = false
+export (bool) var use_our_rot_z = false
+export (bool) var use_negative_our_rot = false
+export (Vector3) var additional_rotation = Vector3()
+export (bool) var debug_messages = false
+
+var skeleton_to_use
+var first_call = true
+const empty_vector = Vector3()
+
+func _ready():
+
+	set_process(false)
+	set_physics_process(false)
+	set_notify_transform(false)
+
+	if update_mode == 0:
+		set_process(true)
+	elif update_mode == 1:
+		set_physics_process(true)
+	elif update_mode == 2:
+		set_notify_transform(true)
+	else:
+		if debug_messages == true:
+			print (name, " - IK_LookAt: Unknown update mode. NOT updating skeleton")
+
+	if Engine.editor_hint == true:
+		_setup_for_editor()
+
+
+func _setup_for_editor():
+	# So we can see the target in the editor, let's create a mesh instance,
+	# Add it as our child, and name it
+	var indicator = MeshInstance.new()
+	add_child(indicator)
+	indicator.name = "(EditorOnly) Visual indicator"
+
+	# We need to make a mesh for the mesh instance.
+	# The code below makes a small sphere mesh
+	var indicator_mesh = SphereMesh.new()
+	indicator_mesh.radius = 0.1
+	indicator_mesh.height = 0.2
+	indicator_mesh.radial_segments = 8
+	indicator_mesh.rings = 4
+
+	# The mesh needs a material (unless we want to use the defualt one).
+	# Let's create a material and use the EditorGizmoTexture to texture it.
+	var indicator_material = SpatialMaterial.new()
+	indicator_material.flags_unshaded = true
+	indicator_material.albedo_texture = preload("editor_gizmo_texture.png")
+	indicator_material.albedo_color = Color(1, 0.5, 0, 1)
+	indicator_mesh.material = indicator_material
+	indicator.mesh = indicator_mesh
+
+
+func _set_update(new_value):
+	update_mode = new_value
+
+	# Set all of our processes to false
+	set_process(false)
+	set_physics_process(false)
+	set_notify_transform(false)
+
+	# Based on the value of upate, change how we handle updating the skeleton
+	if update_mode == 0:
+		set_process(true)
+		if debug_messages == true:
+			print (name, " - IK_LookAt: updating skeleton using _process...")
+	elif update_mode == 1:
+		set_physics_process(true)
+		if debug_messages == true:
+			print (name, " - IK_LookAt: updating skeleton using _physics_process...")
+	elif update_mode == 2:
+		set_notify_transform(true)
+		if debug_messages == true:
+			print (name, " - IK_LookAt: updating skeleton using _notification...")
+	else:
+		if debug_messages == true:
+			print (name, " - IK_LookAt: NOT updating skeleton due to unknown update method...")
+
+
+func _set_skeleton_path(new_value):
+
+	# Because get_node doesn't work in the first call, we just want to assign instead
+	# This is to get around a issue with NodePaths exposed to the editor
+	if first_call == true:
+		skeleton_path = new_value
+		return
+
+	# Assign skeleton_path to whatever value is passed
+	skeleton_path = new_value
+
+	if skeleton_path == null:
+		if debug_messages == true:
+			print (name, " - IK_LookAt: No Nodepath selected for skeleton_path!")
+		return
+
+	# Get the node at that location, if there is one
+	var temp = get_node(skeleton_path)
+	if temp != null:
+		# If the node has the method "find_bone" then we can assume it is (likely) a skeleton
+		if temp.has_method("find_bone") == true:
+			skeleton_to_use = temp
+			if debug_messages == true:
+				print (name, " - IK_LookAt: attached to (new) skeleton")
+		# If not, then it's (likely) not a skeleton
+		else:
+			skeleton_to_use = null
+			if debug_messages == true:
+				print (name, " - IK_LookAt: skeleton_path does not point to a skeleton!")
+	else:
+		if debug_messages == true:
+			print (name, " - IK_LookAt: No Nodepath selected for skeleton_path!")
+
+
+func update_skeleton():
+
+	# NOTE: Because get_node doesn't work in _ready, we need to skip
+	# a call before doing anything.
+	if first_call == true:
+		first_call = false
+		if skeleton_to_use == null:
+			_set_skeleton_path(skeleton_path)
+
+
+	# If we do not have a skeleton and/or we're not supposed to update, then return.
+	if skeleton_to_use == null:
+		return
+	if update_mode >= 3:
+		return
+
+	# Get the bone
+	var bone = skeleton_to_use.find_bone(bone_name)
+
+	# If no bone is found (-1), then return (and optionally print an error)
+	if bone == -1:
+		if debug_messages == true:
+			print (name, " - IK_LookAt: No bone in skeleton found with name [", bone_name, "]!")
+		return
+
+	# get the bone's rest position, and our position
+	var rest = skeleton_to_use.get_bone_global_pose(bone)
+	var our_position = global_transform.origin
+
+	# Convert our position relative to the skeleton's transform
+	var target_pos = skeleton_to_use.global_transform.xform_inv(global_transform.origin)
+
+	# Call helper's look_at function with the chosen up axis.
+	if look_at_axis == 0:
+		rest = rest.looking_at(target_pos, Vector3(1, 0, 0))
+	elif look_at_axis == 1:
+		rest = rest.looking_at(target_pos, Vector3(0, 1, 0))
+	elif look_at_axis == 2:
+		rest = rest.looking_at(target_pos, Vector3(0, 0, 1))
+	else:
+		rest = rest.looking_at(target_pos, Vector3(0, 1, 0))
+		if debug_messages == true:
+			print (name, " - IK_LookAt: Unknown look_at_axis value!")
+
+	# Get our rotation euler, and the bone's rotation euler
+	var rest_euler = rest.basis.get_euler()
+	var self_euler = global_transform.basis.orthonormalized().get_euler()
+
+	# If we using negative rotation, we flip our rotation euler
+	if use_negative_our_rot == true:
+		self_euler = -self_euler
+
+	# Apply our rotation euler, if wanted/required
+	if use_our_rot_x == true:
+		rest_euler.x = self_euler.x
+	if use_our_rot_y == true:
+		rest_euler.y = self_euler.y
+	if use_our_rot_z == true:
+		rest_euler.z = self_euler.z
+
+	# Rotate the bone by the (potentially) changed euler angle(s)
+	rest.basis = Basis(rest_euler)
+
+	# If we have additional rotation, then rotate it by the local rotation vectors
+	if additional_rotation != empty_vector:
+		rest.basis = rest.basis.rotated(rest.basis.x, deg2rad(additional_rotation.x))
+		rest.basis = rest.basis.rotated(rest.basis.y, deg2rad(additional_rotation.y))
+		rest.basis = rest.basis.rotated(rest.basis.z, deg2rad(additional_rotation.z))
+
+	# Finally, apply the bone rotation to the skeleton
+	skeleton_to_use.set_bone_global_pose(bone, rest)
+
+
+# Various upate methods
+# ---------------------
+func _process(delta):
+	update_skeleton()
+func _physics_process(delta):
+	update_skeleton()
+func _notification(what):
+	if what == NOTIFICATION_TRANSFORM_CHANGED:
+		update_skeleton()

3d/ik/addons/sade/ik_look_at.png.import

@@ -0,0 +1,32 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/ik_look_at.png-ec8164b5f09a539e05ec8153e50e1d99.stex"
+
+[deps]
+
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+process/HDR_as_SRGB=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0

3d/ik/addons/sade/plugin.cfg

@@ -0,0 +1,7 @@
+[plugin]
+
+name="S.A.D.E (Skeleton additions and extensions)"
+description="S.A.D.E is A bunch of helpful nodes designed to make using skeletons in Godot powerful and easy."
+author="TwistedTwigleg"
+version="0.1.0"
+script="plugin_main.gd"

3d/ik/addons/sade/plugin_main.gd

@@ -0,0 +1,21 @@
+tool
+extends EditorPlugin
+
+func _enter_tree():
+	# Plugin Initialization here!
+
+	# ------ IK STUFF ------
+	add_custom_type("IK_LookAt", "Spatial", preload("ik_look_at.gd"), preload("ik_look_at.png"))
+	add_custom_type("IK_FABRIK", "Spatial", preload("ik_fabrik.gd"), preload("ik_fabrik.png"))
+	# ------ ---------- ------
+
+
+
+func _exit_tree():
+	# Plugin Clean-up here!
+
+	# ------ IK STUFF ------
+	remove_custom_type("IK_LookAt")
+	remove_custom_type("IK_FABRIK")
+	# ------ ---------- ------
+

3d/ik/button_change_scene.gd

@@ -0,0 +1,10 @@
+extends Button
+
+export (String, FILE) var scene_to_change_to = null
+
+func _ready():
+	connect("pressed", self, "change_scene")
+
+func change_scene():
+	if scene_to_change_to != null:
+		get_tree().change_scene(scene_to_change_to)