Generic image rendering / property connection api for mat_maker_gd.

game/addons/mat_maker_gd/nodes/mm_material.gd

@@ -2,11 +2,36 @@ tool
 class_name MMMateial
 extends Resource
 
-var MMMNode = preload("res://addons/mat_maker_gd/nodes/mm_node.gd")
-
 export(Vector2) var image_size : Vector2 = Vector2(128, 128)
 export(Array) var nodes : Array
 
+func _init():
+	for n in nodes:
+		n.connect("changed", self, "on_node_changed")
+
 func add_node(node : MMNode) -> void:
 	nodes.append(node)
+	
+	node.connect("changed", self, "on_node_changed")
+	
 	emit_changed()
+	
+func remove_node(node : MMNode) -> void:
+	nodes.erase(node)
+	
+	node.disconnect("changed", self, "on_node_changed")
+	
+	emit_changed()
+
+func render() -> void:
+	var did_render : bool = true
+		
+	while did_render:
+		did_render = false
+		
+		for n in nodes:
+			if n && n.render(self):
+				did_render = true
+
+func on_node_changed() -> void:
+	call_deferred("render")

game/addons/mat_maker_gd/nodes/mm_node.gd

@@ -4,9 +4,30 @@ extends Resource
 
 export(Vector2) var graph_position : Vector2 = Vector2()
 
+var input_properties : Array
+
 var properties_initialized : bool = false
 
-func recalculate_image(material, slot_idx : int) -> ImageTexture:
+var dirty : bool = true
+
+#MMMateial
+func render(material) -> bool:
+	if !dirty:
+		return false
+	
+	for p in input_properties:
+		if p.input_property && p.input_property.owner.dirty:
+			return false
+			
+	_render(material)
+	
+	return true
+
+#MMMateial
+func _render(material) -> void:
+	pass
+
+func render_image(material) -> ImageTexture:
 	var image : Image = Image.new()
 	image.create(material.image_size.x, material.image_size.y, false, Image.FORMAT_RGBA8)
 		
@@ -23,7 +44,7 @@ func recalculate_image(material, slot_idx : int) -> ImageTexture:
 		for y in range(image.get_height()):
 			var v : Vector2 = Vector2(x / w, y / h)
 
-			var col : Color = get_value_for(v, slot_idx, pseed)
+			var col : Color = get_value_for(v, pseed)
 
 			image.set_pixel(x, y, col)
 
@@ -33,7 +54,7 @@ func recalculate_image(material, slot_idx : int) -> ImageTexture:
 
 	return tex
 
-func get_value_for(uv : Vector2, slot_idx : int, pseed : int) -> Color:
+func get_value_for(uv : Vector2, pseed : int) -> Color:
 	return Color()
 
 func init_properties() -> void:
@@ -59,3 +80,29 @@ func set_graph_position(pos : Vector2) -> void:
 	graph_position = pos
 	
 	emit_changed()
+
+func register_input_property(prop : MMNodeUniversalProperty) -> void:
+	prop.owner = self
+	
+	prop.connect("changed", self, "on_input_property_changed")
+	
+	input_properties.append(prop) 
+
+func unregister_input_property(prop : MMNodeUniversalProperty) -> void:
+	if prop.owner == self:
+		prop.owner = null
+	
+	prop.disconnect("changed", self, "on_input_property_changed")
+	
+	input_properties.erase(prop)
+
+func set_dirty(val : bool) -> void:
+	var changed : bool = val != dirty
+	
+	dirty = val
+	
+	if changed:
+		emit_changed()
+
+func on_input_property_changed() -> void:
+	set_dirty(true)

game/addons/mat_maker_gd/nodes/mm_node_universal_property.gd

@@ -42,6 +42,13 @@ var slot_name : String
 var value_step : float = 0.1
 var value_range : Vector2 = Vector2(-1000, 1000)
 
+#MMNode
+var owner
+
+func _init():
+	if input_property:
+		input_property.connect("changed", self, "on_input_property_cahnged")
+
 func get_value(uv : Vector2):
 	if !input_property:
 		return get_default_value(uv)
@@ -107,3 +114,17 @@ func get_active_image() -> Image:
 		return override_image
 		
 	return default_image
+
+func set_input_property(val : MMNodeUniversalProperty) -> void:
+	if input_property == val:
+		return
+		
+	if input_property:
+		input_property.disconnect("changed", self, "on_input_property_cahnged")
+	
+	input_property = val
+	
+	input_property.connect("changed", self, "on_input_property_cahnged")
+	
+func on_input_property_cahnged() -> void:
+	emit_changed()

game/addons/mat_maker_gd/nodes/noise/perlin.gd

@@ -10,11 +10,11 @@ export(Vector2) var scale : Vector2 = Vector2(4, 4)
 export(int) var iterations : int = 3
 export(float) var persistence : float = 0.5
 
-func get_value_for(uv : Vector2, slot_idx : int, pseed : int) -> Color:
+func get_value_for(uv : Vector2, pseed : int) -> Color:
 	return NoisePerlin.perlinc(uv, scale, iterations, persistence, pseed)
 
 func _register_methods(mm_graph_node) -> void:
-	mm_graph_node.add_slot_texture(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_IMAGE, "recalculate_image", "")
+	mm_graph_node.add_slot_texture(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_IMAGE, "render_image", "")
 	mm_graph_node.add_slot_int(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, "get_iterations", "set_iterations", "iterations")#, Vector2(1, 10))
 	mm_graph_node.add_slot_float(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, "get_persistence", "set_persistence", "persistence", 0.05)#, Vector2(0, 1))
 	mm_graph_node.add_slot_vector2(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, "get_scale", "set_scale", "scale", 1)#, Vector2(1, 32))

game/addons/mat_maker_gd/nodes/simple/shape.gd

@@ -40,15 +40,19 @@ func _init_properties():
 	edge.input_slot_type = MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_UNIVERSAL
 	edge.slot_name = "edge"
 	edge.value_step = 0.05
+	
+	#this will end up generating the image
+	#maybe whis should be automaticly done whenn added into material
+	#emit_changed()
 
 func _register_methods(mm_graph_node) -> void:
-	mm_graph_node.add_slot_texture(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_IMAGE, "recalculate_image", "")
+	mm_graph_node.add_slot_texture(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_IMAGE, "render_image", "")
 	mm_graph_node.add_slot_enum(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, "get_shape_typoe", "set_shape_typoe", "shape_type", [ "Circle", "Polygon", "Star", "Curved Star", "Rays" ])
 	mm_graph_node.add_slot_int(MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, MMNodeUniversalProperty.SlotTypes.SLOT_TYPE_NONE, "get_sides", "set_sides", "sides")#, Vector2(1, 10))
 	mm_graph_node.add_slot_float_universal(radius)
 	mm_graph_node.add_slot_float_universal(edge)
 
-func get_value_for(uv : Vector2, slot_idx : int, pseed : int) -> Color:
+func get_value_for(uv : Vector2, pseed : int) -> Color:
 	var c : float = 0
 	
 	if shape_type == ShapeType.SHAPE_TYPE_CIRCLE: