[DOTS] RTS Unit Selection

This package is based on DOTS.
Uses Entities and NOT GameObjects for units. Also utilises Job and Burst for optimised performance. This means selecting a thousand units is not a problem!

Because this is an early version it will be free for a while, until all features and found bugs are resolved.

Strategy-Style Selection
Whether you're developing a strategy game, a simulation similar to The Sims, or a turn-based adventure, our Unit Selection System is designed to seamlessly integrate into your project.
This package supports single and multiple unit selection with various configurations.

- Enables single or multiple unit selection
- Short well documented code
- No-coding required for out-of-the-box use!
- Extra customisation requires minimal coding
- Quick set up flow
- Interface for custom selection area functionality
- Interface for input system
- 1 selection prefab included (2D rectangle selection area)
- Includes simple demo scene with no additional 3D models or other assets seen on previews!

Features

Click and drag with mouse:
- Click on unit will select it
- Drag mouse will select (highlight before mouse release) all units in selection area
- Sort units by their distance from start of the drag

Shift hotkey:
- Shift+drag mouse will add all units in selection area to current selection
- Shift+click on unit will toggle unit selection (select/deselect)

Configurations:
- Adjustable number for maximal selected units
- Disable maximum selection number
- Disable mouse double click
- Disable shift selection (adding to current selection)
- Disable click on friendly, neutral and enemy units
- Disable highlighting with drag selection
- Disable highlighting unit when mouse is over it