Imagine first release

run/main.gd

@@ -1,19 +1,181 @@
 extends Control
 
+signal params_loaded
+signal params_reset
+
+@export var shader: ShaderMaterial
+var loaded_images := {}
+var loaded_image_paths := {}
+var image_modification_times := {}
+
+var trans_tween = null
+var params := ImagineParams.new()
+var time = 0.0
+var time_scale_factor = 1.0
+var fx_path = ""
+
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
-	%LoadImageButton.pressed.connect(show_image_load_dialog)
-	%LoadImageDialog.file_selected.connect(load_image)
+	params.time_scale = 0.01
+	params.transition_dur = 2
 
-func show_image_load_dialog():
-	%LoadImageDialog.visible = true
+	%LoadImageButton.pressed.connect(func():
+		%LoadImageDialog.visible = true
+	)
+	%LoadImageDialog.files_selected.connect(func(paths):
+		for p in paths:
+			load_image(p)
+	)
+	%SaveFXButton.pressed.connect(func():
+		if fx_path == "":
+			%SaveFXDialog.visible = true
+		else:
+			save_effects()
+	)
+	%SaveFXAsButton.pressed.connect(func():
+		%SaveFXDialog.visible = true
+	)
+	%SaveFXDialog.file_selected.connect(func(path):
+		fx_path = path
+		save_effects()
+	)
+	%LoadFXDialog.file_selected.connect(func(path):
+		fx_path = path
+		params = ResourceLoader.load(path)
+		params_loaded.emit()
+		%FXFileLabel.text = fx_path
+	)
 
-func load_image(path: String) -> bool:
+	%LoadFXButton.pressed.connect(func():
+		%LoadFXDialog.visible = true
+	)
+	%NewFXButton.pressed.connect(func():
+		params = ImagineParams.new()
+		fx_path = ""
+		%FXFileLabel.text = "unsaved FX"
+		params_reset.emit()
+	)
+
+	%ImageList.item_clicked.connect(func(index, at, btn):
+		if btn == MouseButton.MOUSE_BUTTON_LEFT:
+			transition_to_image(%ImageList.get_item_text(index))
+		elif btn == MouseButton.MOUSE_BUTTON_RIGHT && Input.is_action_pressed("shift"):
+			var file = %ImageList.get_item_text(index)
+			loaded_images.erase(file)
+			loaded_image_paths.erase(file)
+			image_modification_times.erase(file)
+			%ImageList.remove_item(index)
+	)
+
+	for child in %Params.get_children():
+		link_param(child)
+
+func save_effects():
+	ResourceSaver.save(params, fx_path)
+	%FXFileLabel.text = fx_path
+	%SaveConfirmPopup.dialog_text = "FX saved to %s" % fx_path
+	%SaveConfirmPopup.show()
+
+func _process(delta):
+	if Input.is_action_just_pressed("toggle_fullscreen"):
+		%ControlSide.visible = !%ControlSide.visible
+	time += delta * params.time_scale * time_scale_factor
+	shader.set_shader_parameter("time", time)
+
+	for path in loaded_image_paths.values():
+		var prev_mod = image_modification_times[path.get_file()]
+		var last_mod = FileAccess.get_modified_time(path)
+		if last_mod > prev_mod:
+			load_image(path)
+
+func load_image(path: String):
+	var file = path.get_file()
 	var image = Image.load_from_file(path)
 	if image == null:
-		return false
-
+		return
+	
 	var tex = ImageTexture.create_from_image(image)
-	%PreviewImage.texture = tex 
-	%LoadImageButton.text = path.get_file()
-	return true
+	if file in loaded_images:
+		for i in range(%ImageList.item_count):
+			var txt = %ImageList.get_item_text(i)
+			if txt == file:
+				%ImageList.set_item_icon(i, tex)
+				print("Reloaded %s" % txt)
+
+		var prev_tex = loaded_images[file]
+		if shader.get_shader_parameter("texture1") == prev_tex:
+			shader.set_shader_parameter("texture1", tex)
+		if shader.get_shader_parameter("texture2") == prev_tex:
+			shader.set_shader_parameter("texture2", tex)
+	else:
+		%ImageList.add_item(file, tex)
+
+	loaded_images[file] = tex
+	loaded_image_paths[file] = path
+	image_modification_times[file] = FileAccess.get_modified_time(path)
+
+func transition_to_image(file: String):
+	if trans_tween != null:
+		if trans_tween.is_running():
+			return
+		trans_tween.kill()
+
+	var texture1 = shader.get_shader_parameter("texture1")
+	var texture2 = loaded_images[file]
+	shader.set_shader_parameter("texture2", texture2)
+
+	var tw = create_tween()
+	trans_tween = tw
+	var set_trans = func(x):
+		shader.set_shader_parameter("transition", x)
+
+	tw.tween_callback(func():
+		time_scale_factor = 5)
+	tw.tween_method(set_trans, 0.0, 1.0, params.transition_dur/2).set_trans(Tween.TRANS_SINE)
+	tw.tween_callback(func():
+		shader.set_shader_parameter("texture1", texture2)
+		shader.set_shader_parameter("texture2", texture1)
+	)
+	tw.tween_method(set_trans, 1.0, 0.0, params.transition_dur/2).set_trans(Tween.TRANS_SINE)
+	tw.tween_callback(func():
+		time_scale_factor = 1)
+
+func link_param(node: Node):
+	if node is Label:
+		return
+
+	var param = node.name.to_snake_case()
+	var slider = node.get_node("Slider")
+	var button = node.get_node("ResetButton")
+	var val = shader.get_shader_parameter(param)
+	
+	if param == "time_scale":
+		slider.value = params.time_scale
+	elif param == "frequency":
+		var noise = shader.get_shader_parameter("ripples").noise
+		slider.value = noise.frequency
+		slider.value_changed.connect(func(x):
+			noise.frequency = x
+		)
+	elif param == "transition_dur":
+		slider.value = params.transition_dur
+	elif val != null:
+		slider.value = val
+		slider.value_changed.connect(func(x):
+			shader.set_shader_parameter(param, x)
+		)
+
+	slider.default_value = slider.value
+	params[param] = slider.value
+	slider.value_changed.connect(func(x):
+		params[param] = x
+	)
+	params_loaded.connect(func():
+		slider.value = params[param]
+	)
+	button.pressed.connect(func():
+		slider.reset()
+	)
+	params_reset.connect(func():
+		slider.reset()
+	)