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Add separation_force function

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Robert Garrett
2024-07-15 10:10:56 -05:00
parent 6c38083e6d
commit 283a0bdde3
1 changed files with 6 additions and 4 deletions
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10
src/birdoids_plugin.rs
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@@ -9,7 +9,7 @@ const PLAYERBOID_COLOR: Color = Color::srgb(1.0, 0.0, 0.0);
const TURN_FACTOR: f32 = 1.0; const TURN_FACTOR: f32 = 1.0;
const BOID_VIEW_RANGE: f32 = 50.0; const BOID_VIEW_RANGE: f32 = 50.0;
const COHESION_FACTOR: f32 = 1.0; const COHESION_FACTOR: f32 = 1.0;
const SEPARATION_FACTOR: f32 = 100.0; const SEPARATION_FACTOR: f32 = 1.0;
const ALIGNMENT_FACTOR: f32 = 500.0; const ALIGNMENT_FACTOR: f32 = 500.0;
const SPACEBRAKES_COEFFICIENT: f32 = 0.01; const SPACEBRAKES_COEFFICIENT: f32 = 0.01;
@@ -218,17 +218,19 @@ fn separation(
Vec3::ZERO, Vec3::ZERO,
|accumulator, neighbor| { |accumulator, neighbor| {
let force = separation_force(boid_transform.translation.xy(), neighbor.xy()); let force = separation_force(boid_transform.translation.xy(), neighbor.xy());
accumulator + *force accumulator + *force * SEPARATION_FACTOR
}, },
); );
boid_acceleration.0 += accel; boid_acceleration.0 += accel;
} }
} }
// TODO: Make this an exponential so force gets stronger faster as the points approach. // f(x) = -x^2 + 1
fn separation_force(us: Vec2, neighbor: Vec2) -> Force { fn separation_force(us: Vec2, neighbor: Vec2) -> Force {
let distance = neighbor - us; let distance = neighbor - us;
Force(-(distance * SEPARATION_FACTOR).extend(0.0)) let scaled = distance / BOID_VIEW_RANGE;
let force_vec = -scaled.powf(2.0) + Vec2::ONE;
Force(force_vec.extend(0.0))
} }
fn alignment( fn alignment(