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Boid.pde #94

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f1a8992
Boid.pde
mshaub Jan 4, 2018
6ec4793
Boid.pde
mshaub Jan 5, 2018
bf54469
Boid
mshaub Jan 5, 2018
0fe24f1
Boid.pde
mshaub Jan 5, 2018
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15 changes: 7 additions & 8 deletions chp06_agents/box2d/Flocking_box2d/Boid.pde
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Original file line number Diff line number Diff line change
Expand Up @@ -47,17 +47,17 @@ class Boid {
ali.mulLocal(1);
coh.mulLocal(1);
// Add the force vectors to acceleration
Vec2 loc = body.getWorldCenter();
body.applyForce(sep,loc);
body.applyForce(ali,loc);
body.applyForce(coh,loc);
Vec2 pos = body.getWorldCenter();
body.applyForce(sep,pos);
body.applyForce(ali,pos);
body.applyForce(coh,pos);
}

// A method that calculates and applies a steering force towards a target
// STEER = DESIRED MINUS VELOCITY
Vec2 seek(Vec2 target) {
Vec2 loc = body.getWorldCenter();
Vec2 desired = target.sub(loc); // A vector pointing from the position to the target
Vec2 pos = body.getWorldCenter();
Vec2 desired = target.sub(pos); // A vector pointing from the position to the target

// If the magnitude of desired equals 0, skip out of here
// (We could optimize this to check if x and y are 0 to avoid mag() square root
Expand Down Expand Up @@ -102,7 +102,7 @@ class Boid {

// Wraparound
void borders() {
Vec2 loc = box2d.getBodyPixelCoord(body);
Vec2 pos = box2d.getBodyPixelCoord(body);
Vec2 vel = body.getLinearVelocity();
float a = body.getAngularVelocity();
if (pos.x < -w) {
Expand Down Expand Up @@ -254,4 +254,3 @@ class Boid {


}