Functions in the module:

• getAllBoids
• getBoidById
• #24 getBoidsGroupById

Piece ID: cb053b98-8a4c-4f53-b5c2-6fc8e5b78999

Split from #5 (comment)

Pieces

• #39 Implement ViewPort dragging with mouse
• #44 Take zoom factor into account while dragging the view
• #40 Implement Boids following the cursor rule

Suggested by @voldyman

Split form #31

Split form #31

Piece ID: 38c0786d-acd8-400b-aad8-90d91ee5d05b

Split from #22

https://www.stackage.org/package/qm-interpolated-string

Suggested by @unclechu

Derived from #56 (comment)

Split from #1

Split from #9 (comment)

https://travis-ci.org/tsoding/boids/builds/229693154#L426

Maybe we should start documenting our code?

Introduced in #41
Piece: dfec87ca-77f5-4ad6-a015-81b49929a5a1

This application works with vectors pretty extensively, and functions like addTwoVectors are not really convenient.

• TODO(#68)

After introducing a combined rule #64 the following cursor feature #31 is broken. We need to fix it back.

When we are too closed to the boids, the zooming is slow. But when we are zoomed out, the zooming is really fast. The speed of the zooming should be roughly the same on all levels.

Split from #5 (comment)

Remaining Work

• Calculate average position of near boids
• Steer to the opposite position of near boids

Split

• #18 Consider nearest boids only within the view
• #16 Implement Alignment rule
• #17 Implement Cohesion rule

Just a bunch of boids on 2D that follow the 3 steering rules:

• Separation: steer to avoid crowding local flockmates
• Alignment: steer towards the average heading of local flockmates
• Cohesion: steer to move toward the average position of local flockmates

See http://www.red3d.com/cwr/boids/ for more info

Split from #10

Split from #10

Split from #31
Introduced in #41
Piece: 38bb2eed-3ee9-4ff8-b892-46645e85229c

There are lots of situations where we need the boids to have an identity. We need to research if it makes sense to introduce an identity as the part of the boid state.

Similar to #40 but opposite. Also, come up with a method to switch between the follow and run away modes.

After reviewing https://github.com/skeeto/boids-js I came to conclusion that our implementation has several major flaws right now:

• Wrap both position of the boid.
• Average angle is broken. See https://en.wikipedia.org/wiki/Mean_of_circular_quantities
• Alignment and cohesion rule are applied simultaneously by using mean angle of their targets
• Alignment rule has roughly 3/4 influence over the cohesion rule
• Separation rule has the highest priority and override any other rule

Should fix #20

See #45 for more info

• TODO(#67)

After introducing a combined rule #64 old rules are just a dead code. Get rid of them

Suggested by everx80

Scope

• #2 Unit Testing
• #3 Travis CI

Introduced in #41
Piece: 22ffd996-8c7f-4bfa-9166-66ddc77858eb

Introduce a separate entity called Navigation which encapsulates the view port and the drag position. All of the functions such as zoomControl and dragControl should work only with Navigation instead of the entire World.

Split from #10