Mutual Attraction

Nature of Code Lesson #2.6

Finishing off Chapter 2 on forces, let’s look at an “N-Body Simulation” where all movers experience gravitational attraction with all other movers!

Topics

0:00 - Introducing Today's Topic
0:30 - Recap Single attractor system
1:20 - The two body problem
2:21 - Euler Integration
2:53 - Other integration options
4:00 - Coding 2-body simulation
7:56 - The three body problem
8:15 - Coding 3-body simulation
9:04 - Refactoring for n-body
10:48 - Adding a fourth mover
11:38 - Looking at initial states
12:03 - Shape 1: donut
13:33 - The p5 Vector rotate() function
16:12 - Trying out different variations
17:34 - Looking at efficiency
19:10 - Adding the sun
20:46 - Looking at other examples
21:21 - Exercise for viewers
22:09 - Invite to chapter 3 and goodbye

Mutual Attraction (N-Body)

Mutual Attraction (N-Body) with Barnes Hut

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Links discussed in this lesson

Videos discussed in this lesson

2.5 Gravitational Attraction - The Nature of Code by The Coding Train
2.1 Simulating Forces: Gravity and Wind - The Nature of Code by The Coding Train
5.1 Autonomous Steering Agents - The Nature of Code by The Coding Train
3.1 Angles and Rotation - The Nature of Code by The Coding Train
Coding Challenge #98.1 - Quadtree by The Coding Train