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https://github.com/anuraghazra/EvolutionAquerium
:fish: :bug: Small Inteli Creatures Based On Steering Behaviours
https://github.com/anuraghazra/EvolutionAquerium
agent-based-simulation anuraghazra boids canvas2d flocking flocking-agents flocking-algorithm flocking-simulation genetic-algorithm simulation steering-behaviours
Last synced: about 2 months ago
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:fish: :bug: Small Inteli Creatures Based On Steering Behaviours
- Host: GitHub
- URL: https://github.com/anuraghazra/EvolutionAquerium
- Owner: anuraghazra
- License: mit
- Created: 2018-06-26T05:00:15.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2022-02-12T20:33:10.000Z (almost 3 years ago)
- Last Synced: 2024-10-11T13:31:06.919Z (2 months ago)
- Topics: agent-based-simulation, anuraghazra, boids, canvas2d, flocking, flocking-agents, flocking-algorithm, flocking-simulation, genetic-algorithm, simulation, steering-behaviours
- Language: JavaScript
- Homepage: https://anuraghazra.github.io/EvolutionAquerium
- Size: 364 KB
- Stars: 185
- Watchers: 5
- Forks: 21
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
- License: LICENSE
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README
# Evolution Aquerium
Check out [Evolution Aquerium case study](https://anuraghazra.github.io/case-studies/evolution-aquerium).
[](https://github.com/anuraghazra/EvolutionAquerium/blob/master/LICENSE)
[](https://github.com/anuraghazra/EvolutionAquerium)
Check-out [DevEnv](https://github.com/anuraghazra/EvolutionAquerium/tree/devEnv) Branch for Beta Optimization and Development which includes Refactored Code and EcoSystem.js Class to manage Creatures and Easy-to-use API for making new Agents.
# How It Works?
Well that's an obvious question.
These Creatures are based on [Craig Reynold's](https://www.red3d.com/cwr/index.html) Steering Behaviors and [Flocking System](https://www.red3d.com/cwr/boids/)
It's also implements Genetic Algorithm and mutations.
You can learn more about them on Daniel Shiffman's YouTube Channel [The Coding Train](https://www.youtube.com/user/shiffman)
* [Coding Challenge #69.1: Evolutionary Steering Behaviors](https://www.youtube.com/watch?v=flxOkx0yLrY&t=1223s)
* [Coding Challenge #124: Flocking Simulation](https://www.youtube.com/watch?v=mhjuuHl6qHM&t=1978s)
* [9. Genetic Algorithm playlist The Nature of Code](https://www.youtube.com/playlist?list=PLRqwX-V7Uu6bJM3VgzjNV5YxVxUwzALHV)
# How My Code Works?
My code is actually pretty simple.
## Agent Class
I made a `Agent` class which handles all the Basic behavior like
* `flock()`
* `align()`
* `separate()`
* `cohesion()`
And added some basic parameters like
```javascript
this.radius = radius; //size of the agent
this.health = 1; // health
this.healthDecrease = 0.003; // how much health will decrease over time
this.goodFoodDie = 0.5; // food increase the health by that amount
this.badFoodDie = -0.4; // poison decrease the health by that amount
```
I also added a `sex` variable for the agents and all of them also has unique names
```javascript
this.sex = (Math.random() < 0.5) ? 'male' : 'female';
```
## Fear Behavior
And for the most important part, i added a **`defineFear()`** method which handles Fear behavior.
It's a robust function to define fear which can be also used inversly with negative values.
**`defineFear()`** function allows Agents to add Steering Forces simultaneously on each other
```javascript
// list, weight, perception, ?callback
creature.defineFear(predators, -4, 50);
```
## Reproduction System
Reproduction System checks for `male` and `female` agents and if their `radius` is greater than 8 and they are close enough to each other, then they can reproduce with their specific `DNA` and creates a small Agent based on their DNA data and with some mutation.
# Predator class
Predators are simple but deadly
they just has a `sex` property set to 'predator'
and i used **`defineFear()`** function inversely to attack the Creatures
And bigger they get slower they became.
# Avoider Class
Avoiders are very very very fast but they are very agile too.
they just has a `sex` property set to 'avoider'
and i used **`defineFear()`** function to avoid every poison and Predator.
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