Implement a Tilemap Setup Menu

[ilexp]

Summary

Currently, setting up tilemaps is a tedious task and additionally, new users have no clue how to start. There should be a setup menu that automatically sets up a simple multi-layer tilemap including collision shape generation.

Analysis

• The menu can go next to the resize menu.
• There should be a similar context-based auto-popup of the setup menu when the Tilemap editor is focused / opened in a Scene without an existing tilemap.
• Options this menu should offer to users:
  • Number of tilemap layers.
  • Size of the tilemap.
  • Tileset to use, with the option to specify a pixmap instead and auto-create the tileset.
    • Dragdrop should be possible. Topmost, but not modal?
    • In addition, tie in issue Add a "Select Object" Button next to Reference Editors #150?
  • Flat or deep tilemap?
  • Generate collision shapes or not?
• Additional improvements related to this:
  • Introduce a "Create Tileset" right-click action for Pixmaps.
  • Provide a DataConverter from Pixmap to Tileset
    • Double-check this and fix potential false-positives for this conversion.
    • As with other converters, implement code paths for re-use of existing Resources.
  • Dragdrop of a Tileset into the Scene Editor could create a GameObject with Tilemap and TilemapRenderer Component.
    • Should be possible using a DataConverter implementation, requiring a CreateObj operation and with GameObject as a target type directly.
  • Dragdrop of a (convertible to) Tileset into the Tilemap Editor should open up the Setup dialog with the Tileset assigned.
    • This would be "hardcoded" as part of the Tilemap Editor, because it doesn't allow other dragdrop operations anyway, nor creating other objects.

[ilexp]

Progress:

• Introduced a "Create Tileset" right-click action for Pixmaps.
• Introduced a Pixmap to Tileset DataConverter.
• Dragdrop of a Tileset into the Scene Editor or Scene View will create a new Tilemap object.

Immediate ToDo:

• Implement the Tilemap Setup dialog.
• Trigger the Tilemap Setup dialog when dragging a (convertible to) Tileset into the Tilemap Editor.
• Introduce a keyboard shortcut for opening the Resize dialog and allow to complete the operation keyboard-only?

[ilexp]

Idea:

• For simplicity and flexibility reasons, this dialog could use a PropertyGrid to display all the setup values.
  • Hide the editor header and remove root indentation, should it be there.
  • Auto-focus the PropertyGrid when focusing the dialog. Make sure to provide proper tab support.
  • Make the background colors match.
• Pro:
  • No implementation overhead for every option's UI control.
  • No need to adjust UI code when changing what settings are available.
  • ContentRef editors including dragdrop support are already there, including previews and convertible support.
  • Automatically upgrades when any of the PropertyEditors are improved.
• Con:
  • Does not look as nice as a custom-designed dialog with grid layout, groups, etc.
• Overall, the Pro side seems to outweigh the Con side.

[ilexp]

Progress:

• Implemented a Tilemap Setup dialog, accessible via tool action.
• Dragdrop of a (convertible to) Tileset into the Tilemap Editor will open up the Tilemap Setup dialog.
• Countless tweaks and fixes.

Closing this.