material-maker/addons/material_maker/graph_edit.gd
2019-08-17 17:35:48 +02:00

258 lines
6.8 KiB
GDScript

tool
extends GraphEdit
var editor_interface = null
var node_factory = null
var renderer = null
var save_path = null setget set_save_path
var need_save = false
var generator = null
signal save_path_changed
signal graph_changed
func _ready():
OS.low_processor_usage_mode = true
center_view()
func _gui_input(event):
if event is InputEventKey and event.pressed:
var scancode_with_modifiers = event.get_scancode_with_modifiers()
if scancode_with_modifiers == KEY_C:
center_view()
elif scancode_with_modifiers == KEY_DELETE:
remove_selection()
# Misc. useful functions
func get_source(node, port):
for c in get_connection_list():
if c.to == node and c.to_port == port:
return { node=c.from, slot=c.from_port }
func offset_from_global_position(global_position):
return (scroll_offset + global_position - rect_global_position) / zoom
func add_node(node):
add_child(node)
node.connect("close_request", self, "remove_node", [ node ])
func connect_node(from, from_slot, to, to_slot):
print("Connecting "+str(from)+"("+str(from_slot)+") to "+str(to)+"("+str(to_slot)+")")
if generator.connect_children(get_node(from).generator, from_slot, get_node(to).generator, to_slot):
var disconnect = get_source(to, to_slot)
if disconnect != null:
.disconnect_node(disconnect.node, disconnect.slot, to, to_slot)
.connect_node(from, from_slot, to, to_slot)
send_changed_signal()
func disconnect_node(from, from_slot, to, to_slot):
if generator.disconnect_children(get_node(from).generator, from_slot, get_node(to).generator, to_slot):
.disconnect_node(from, from_slot, to, to_slot)
send_changed_signal();
func remove_node(node):
generator.remove_node(node.generator)
var node_name = node.name
for c in get_connection_list():
if c.from == node_name or c.to == node_name:
disconnect_node(c.from, c.from_port, c.to, c.to_port)
node.queue_free()
send_changed_signal()
# Global operations on graph
func update_tab_title():
if !get_parent().has_method("set_tab_title"):
return
var title = "[unnamed]"
if save_path != null:
title = save_path.right(save_path.rfind("/")+1)
if need_save:
title += " *"
if get_parent().has_method("set_tab_title"):
get_parent().set_tab_title(get_index(), title)
func set_need_save(ns):
if ns != need_save:
need_save = ns
update_tab_title()
func set_save_path(path):
if path != save_path:
save_path = path
update_tab_title()
emit_signal("save_path_changed", self, path)
func clear_material():
clear_connections()
for c in get_children():
if c is GraphNode:
remove_child(c)
c.free()
if generator != null:
remove_child(generator)
generator.free()
generator = null
send_changed_signal()
func update_graph(generators, connections):
for g in generators:
var node = node_factory.create_node(g.get_type())
if node != null:
node.name = "node_"+g.name
add_node(node)
node.generator = g
node.offset = g.position
for c in connections:
.connect_node("node_"+c.from, c.from_port, "node_"+c.to, c.to_port)
func new_material():
clear_material()
var loader = MMGenLoader.new()
generator = loader.create_gen({nodes=[{name="Material", type="material"}], connections=[]})
if generator != null:
add_child(generator)
update_graph(generator.get_children(), generator.connections)
set_save_path(filename)
set_need_save(false)
center_view()
func get_free_name(type):
var i = 0
while true:
var node_name = type+"_"+str(i)
if !has_node(node_name):
return node_name
i += 1
func create_nodes(data, position : Vector2 = Vector2(0, 0)):
if data == null:
return
if data.has("type"):
data = { nodes=[data], connections=[] }
if typeof(data.nodes) == TYPE_ARRAY and typeof(data.connections) == TYPE_ARRAY:
var loader = MMGenLoader.new()
var new_stuff = loader.add_to_gen_graph(generator, data.nodes, data.connections)
for g in new_stuff.generators:
g.position += position
update_graph(new_stuff.generators, new_stuff.connections)
func load_file(filename):
clear_material()
var loader = MMGenLoader.new()
generator = loader.load_gen(filename)
if generator != null:
add_child(generator)
update_graph(generator.get_children(), generator.connections)
set_save_path(filename)
set_need_save(false)
center_view()
func save_file(filename):
var data = { nodes = [] }
for c in get_children():
if c is GraphNode:
data.nodes.append(c.serialize())
data.connections = get_connection_list()
var file = File.new()
if file.open(filename, File.WRITE) == OK:
file.store_string(to_json(data))
file.close()
set_save_path(filename)
set_need_save(false)
func export_textures(size = null):
if save_path != null:
var prefix = save_path.left(save_path.rfind("."))
for c in get_children():
if c is GraphNode and c.has_method("export_textures"):
c.export_textures(prefix, size)
# Cut / copy / paste
func remove_selection():
for c in get_children():
if c is GraphNode and c.selected and c.name != "Material":
remove_node(c)
func serialize_selection():
var data = { nodes = [], connections = [] }
var nodes = []
for c in get_children():
if c is GraphNode and c.selected and c.name != "Material":
nodes.append(c)
if nodes.empty():
return null
var center = Vector2(0, 0)
for n in nodes:
center += n.offset+0.5*n.rect_size
center /= nodes.size()
for n in nodes:
var s = n.serialize()
var p = n.offset-center
s.node_position = { x=p.x, y=p.y }
data.nodes.append(s)
for c in get_connection_list():
var from = get_node(c.from)
var to = get_node(c.to)
if from != null and from.selected and to != null and to.selected:
data.connections.append(c)
return data
func can_copy():
for c in get_children():
if c is GraphNode and c.selected and c.name != "Material":
return true
return false
func cut():
copy()
remove_selection()
func copy():
OS.clipboard = to_json(serialize_selection())
func paste(pos = Vector2(0, 0)):
for c in get_children():
if c is GraphNode:
c.selected = false
var data = parse_json(OS.clipboard)
create_nodes(data, scroll_offset+0.5*rect_size)
# Center view
func center_view():
var center = Vector2(0, 0)
var node_count = 0
for c in get_children():
if c is GraphNode:
center += c.offset + 0.5*c.rect_size
node_count += 1
if node_count > 0:
center /= node_count
scroll_offset = center - 0.5*rect_size
# Delay after graph update
func send_changed_signal():
set_need_save(true)
$Timer.start()
func do_send_changed_signal():
emit_signal("graph_changed")
# Drag and drop
func can_drop_data(position, data):
return typeof(data) == TYPE_DICTIONARY and (data.has('type') or (data.has('nodes') and data.has('connections')))
func drop_data(position, data):
# The following mitigates the SpinBox problem (captures mouse while dragging)
if Input.get_mouse_mode() == Input.MOUSE_MODE_CAPTURED:
Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
create_nodes(data, offset_from_global_position(get_global_transform().xform(position)))
return true