Sander van Dragt's Notes

• 0.1.0

  Sander March 20, 2023 at 5:06 pm

  Originally written on lamb-releases:

  Initial release! Full Changelog: https://github.com/svandragt/lamb/commits/0.1.0

• Godot simplified drag n drop tutorial

  Sander March 18, 2023 at 12:06 am

  I was "following" Generalist Programmer's Godot drag and drop tutorial and I made a few refinements that I wanted to share. Please read the tutorial and then follow along.

  Drop-in behaviour

  Wouldn't it be cool to give a node drag and drop behaviour simply by dropping in a node with the script, independent of any other scripting?

  We can do this by creating a new child node (here called Drag-and-drop Dropin), and attaching the script to it. It must extend from the dropin Node2D.

  

  In the script itself we make two changes:

  1. Disconnect the KinematicBody2D's input_event signal, and write it in code in the dropin's _ready function. Call it on it's parent: get_parent().connect("input_event", self, "_on_KinematicBody2D_input_event"). We want to process the input_event of the KinematicBody2D, not the dropin.
  2. In the _process function, assign the mouse position to the parent of the dropin: get_parent().position = Vector2(mousepos.x, mousepos.y).
  3. Same for the last line in the script where we set the position of the parent.

  The script then reads as follows:

  extends Node2D
  
  var dragging = false
  
  signal dragsignal
  
  
  func _ready():
      connect("dragsignal", self, "_set_drag_pc")
      get_parent().connect("input_event", self, "_on_KinematicBody2D_input_event")
  
  
  func _process(delta):
      if dragging:
          var mousepos = get_viewport().get_mouse_position()
          get_parent().position = Vector2(mousepos.x, mousepos.y)
  
  
  func _set_drag_pc():
      dragging = !dragging
  
  
  func _on_KinematicBody2D_input_event(viewport, event, shape_idx):
      if event is InputEventMouseButton:
          if event.button_index == BUTTON_LEFT and event.pressed:
              emit_signal("dragsignal")
          elif event.button_index == BUTTON_LEFT and !event.pressed:
              emit_signal("dragsignal")
      elif event is InputEventScreenTouch:
          if event.pressed and event.get_index() == 0:
              get_parent().position = event.get_position()
  

  Simplifying the script

  I was refactoring this, and it turns out we can simplify this further.

  1. We don't need a dragsignal because the signal is both emitted and consumed within the same script. We can just replace the emit_signal calls with calls to _set_drag_pc(). We can then remove the connect() call in the _ready function, and the signal dragsignal.
  2. The same function is called when the left mouse button is both pressed and not pressed, so we can remove that conditional and remove the elif statement in the input event handler.
  3. As there is only one invocation of _set_drag_pc() we can inline it.

  The final script becomes:

  extends Node2D
  
  var dragging = false
  
  
  func _ready():
      get_parent().connect("input_event", self, "_on_KinematicBody2D_input_event")
  
  
  func _process(delta):
      if dragging:
          var mousepos = get_viewport().get_mouse_position()
          get_parent().position = Vector2(mousepos.x, mousepos.y)
  
  
  func _on_KinematicBody2D_input_event(viewport, event, shape_idx):
      if event is InputEventMouseButton:
          if event.button_index == BUTTON_LEFT:
              dragging = !dragging
      elif event is InputEventScreenTouch:
          if event.pressed and event.get_index() == 0:
              get_parent().position = event.get_position()
  

  So this dropin can now be added to any node to add Drag-and-Drop behaviour. I think the script can be improved a little so that the node is not centered under the mouse cursor but takes account the offset where it is picked up.

  Let me know your thoughts! #godot

• Lamb: my upcoming selfhosted microblogging service

  Sander March 12, 2023 at 11:37 am

  Started a new project called Lamb:

  Literally Another Micro Blog.

  Barrier free super simple blogging.

  • sqlite based
  • twitter like interface
  • register to a flock, index of blaats

  View on GitHub

  #project

• Wagtail blog experimentation

  Sander March 10, 2023 at 10:01 am

  I spun up a test Wagtail install and followed its tutorial which lets you make a basic blog with categories, tags, galleries. The interface looks good on screenshots but is a bit unpolished in places, I tried installing wagtail-blog as well but it's written for v2 and we're at v4 now. That could be quite easy to update, I haven't checked but might do, depending on motivation.

  That said compared to the tutorial creating RSS feeds is not too hard, a WordPress Importer would be nice.

  After that investigate some indieweb features.

  #technology #wagtail #wordpress

• Blog

  Sander November 25, 2022 at 10:52 am
• Sander November 8, 2022 at 10:21 am

  So, I'm building a digital card game... (Follow https://amasan.co.uk/vandragt/category/project/ if you want to read my devlog).

  #project #status #super9

• Sander October 27, 2022 at 5:44 pm

  Thinking about what my personal site should be for. Replacing Twitter and notes. A blog, sharing finds, what I’m hacking on and be a reference knowledge base. Let’s see if Known can do this.

• Sander September 20, 2022 at 4:58 pm

  Drinking coffee is a form of time travelling.

  #status

• Sander September 13, 2022 at 11:27 am

  Fafi developer builds can now index individual urls, and extract urls from text based files (such as .html). That should make it more interesting if you want to search page content but don't use Firefox.

  #fafi #project #status

• Mail: a local privacy focused searchable database

  Sander September 12, 2022 at 9:09 am

  Draft mail is the WordPress custom post-type of databases.

  Ultimately all productivity apps for privacy focused folks trend towards a locally synced database containing stuff. A database searched with an interface you already use. This is e-mail, if that wasn't already ruined by untrusted parties.

  For example

  1. Notes: mail in a folder
  2. Bookmarks: page content referenced by a URI as mail in a folder.
  3. Todos: mail in a folder

  Some of these use a man in the middle process to filter content, and high volume incoming / outgoing mail might get your account in trouble. So there are webservices with paid options to sustain them, with data export and privacy concerns.

  #technology