chore(misc): add assets list with credits+licenses

Author: MinaPecheux

ASSETS.md

@@ -0,0 +1,40 @@
+# Assets
+
+This document lists all the assets and code snippets used or re-adapated in the various demo examples of this Unity/C# project with direct links and credits to the original source/author(s).
+
+## 1. Kenney's tilesets
+
+The tilesets shown in <u>_Chapter 2_</u> and <u>_Chapter 8_</u> are from the amazing Kenney library: [https://kenney.nl/](https://kenney.nl/). They are available for free under the **CC0 - Creative Commons** "No Rights Reserved" license (more info [here](https://creativecommons.org/share-your-work/public-domain/cc0/)).
+
+![preview_scribble](./doc/preview_scribble.png)
+![preview_scifi](./doc/preview_scifi.png)
+
+## 2. _Free Ancient Models_ by markinhofaci
+
+This collection of 3D models was made by "markinhofaci", and it's available for free on the famous 3D trading website [CG Trader](https://www.cgtrader.com/) under the Royalty Free license: [https://www.cgtrader.com/free-3d-models/character/fantasy-character/free-ancient-warriors](https://www.cgtrader.com/free-3d-models/character/fantasy-character/free-ancient-warriors).
+
+![preview_free-ancient-warriors](./doc/preview_free-ancient-warriors.jpg)
+
+## 3. Mage model by gadohoa
+
+This low-poly 3D mage character was made by "gadohoa", and it's available for free on [CG Trader](https://www.cgtrader.com/) under the Royalty Free license: [https://www.cgtrader.com/free-3d-models/character/fantasy-character/mage-model](https://www.cgtrader.com/free-3d-models/character/fantasy-character/mage-model).
+
+![preview_mage-model](./doc/preview_mage-model.jpg)
+
+## 4. 2D A* Pathfinder by pixelfac
+
+<u>_Chapter 8_</u>'s unit movement relies on a slightly adapted version of "pixelfac"'s 2D A* pathfinding algorithm for Unity tilemaps, available for free on Github over here: [https://github.com/pixelfac/2D-Astar-Pathfinding-in-Unity](https://github.com/pixelfac/2D-Astar-Pathfinding-in-Unity).
+
+Here, I've re-organised a few objects and allowed for the pathfinder to prepare the map of walkable and non-walkable areas in advance and cache it for further computations (instead of recomputing it each time like in the original implementation).
+
+## 5. _Cryo's Mini GUI_ by PaperHatLizard
+
+This nice little pack of UI elements by "PaperHatLizard" is available for free on [itch.io](https://itch.io/) under the **CC BY-NC 4.0** license (more info [here](https://creativecommons.org/licenses/by-nc/4.0/legalcode)): [https://paperhatlizard.itch.io/cryos-mini-gui](https://paperhatlizard.itch.io/cryos-mini-gui).
+
+![preview_cryos-mini-gui](./doc/preview_cryos-mini-gui.png)
+
+## 6. _Cartoon FX Remaster Free_ by Jean Moreno
+
+The magic VFX from <u>_Chapter 11_</u> are extracted from Jean Moreno's _Cartoon FX Remaster Free_ Unity pack, available for free on the asset store: [https://assetstore.unity.com/packages/vfx/particles/cartoon-fx-remaster-free-109565](https://assetstore.unity.com/packages/vfx/particles/cartoon-fx-remaster-free-109565).
+
+![preview_cartoon-fx-remaster-free](./doc/preview_cartoon-fx-remaster-free.webp)

README.md

@@ -61,3 +61,7 @@ All the code and assets for those demos are included in this Github repository,
 4. The **utility-based wizard AI** (from <u>_Chapter 10: Designing a utility-based wizard AI_</u>): Last but not least, this AI acts as a computer-controller opponent for a little magic duel game, all pumped up with magic! By evaluating the utility of each option in his action set, this sorcerer is able to cast fireballs, ice shards and healing spells... and holds its ground quite convincingly against you in this single-player magic fight game!
 
 <img src="doc/04_ubai-mage.png" />
+
+# Assets
+
+The full list of assets with proper credits and license details is available over here: [ASSETS.md](./ASSETS.md).