Fuzzy logic is artificial intelligence use in video game. The specificity of the fuzzy logic is to compute a desiraiblity value for very specific case instead of normal checking to enable state
Here is an example where the fuzzy logic can useful
Project : Which weapon choose again player ?
In a shooter game, an AI actor can have multiple weapons, but which weapon choose to fight efficiently again player
For this project, I create 3 weapons
- Shotgun : Very efficient on a close combat insofar as the spread of weapon, but useless for long distance because the shell spread so the damage is minimal form afar
- Rocket Launcher : Very efficent on mid combat, not efficient close because the damage explosion can hurt the player , and not efficient form far because the rocket is slow so the enemy can avoid the rocket
- Sniper Rifle : Very efficient for far combat , efficient on middle. Not efficient on close combat, because the time of reloading a sniper is very long
The selection of the weapon will using 2 data
- Distance from the player
- Munition in the weapon
For each of the 2 data, multiples rules will be create
- Target Close & Lot of ammo, Target Close & Correct amount of ammo, Target Close & low ammo
- Target Mid & Lot of ammo, Target Mid & Correct ammount of ammo...
Diagram
Here is 2 diagrams for the 2 datas
 |
| Distance |
- Close : 0 : 25 meters
- Middle : 25 300 meters
- Far 150 1000
You can note that a target can middle and far at the same time ! But that is the fuzzy logic is not stuck in one state, but give values for each state
 |
| Ammo |
The target is
- Low ammo: 0 : 10 ammo
- Correct ammo : 10 30 ammo
- Lot ammo 30 100
On this project the user can enter the distance of the target and the munition of each weapon (rocket,shotgun , sniper)
Here are the result
For a ditance of 50 meter to the target the best weapon is the shotgun
For a distance of 150 meter to the target the best weapon is the rocket launcher
For a distance of 300 meter to the target the best weapon is the sniper rifle
Link to this project : https://github.com/NicolasBunn/FuzzyLogic
