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add dynamic slowdown dependent on angle 

The boid will now slow down less if the angle created by the line from it to its target and the line from the target to the next one is nearly a straight line.
This commit is contained in:
JH159753 2022-10-29 03:27:49 -07:00
parent a460deb7ca
commit 3d16b646a8
1 changed files with 31 additions and 0 deletions
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31
Boid.pde
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@ -112,6 +112,36 @@ class Boid
//if so, change the speed depending on the angle to the next target
//This part isn't really implemented at all, and I need sleep
//We can calculate the angle to the next target with the use of two vectors: one from our location to current target, one from current target to next target
//use the dot product of those two vectors; this gives us the angle between them, and we can use that to calculate how much we should slow down
//direction is our boid to target vector
//this is at direction
//current target to next target is here:
PVector currentTargetToNext = PVector.sub(waypoints.get(currentTarget+1), target);
//i'm not sure this is the best way to do this, it might be simpler to calculate the angle, but this should work too
//holds dot product of targets
float dotProductOfTargets = PVector.dot(currentTargetToNext, direction);
//Dividing by both their magnitudes will normalize our result between -1 and 1
dotProductOfTargets = dotProductOfTargets / (currentTargetToNext.mag() * direction.mag());
//Add 1, divide by 2, this will cause our result to be between 0 and 1
//If this is closer to 0, slow down more. If it's closer to 1, slow down less.
dotProductOfTargets = (dotProductOfTargets + 1) / 2;
//use an ideal speed for our boid, to tell it to either speed up or slow down whether it's going faster than this or not
float idealSpeed = dotProductOfTargets * 20 + 10;
if (kinematic.getSpeed() < idealSpeed) {
kinematic.increaseSpeed(1,0);
} else if (kinematic.getSpeed() > idealSpeed) {
kinematic.increaseSpeed(-1,0);
}
/*
if (kinematic.getSpeed() < 40 && direction.mag() > 30) {
kinematic.increaseSpeed(1,0);
} else if (kinematic.getSpeed() < 20 && direction.mag() > 15) {
@ -124,6 +154,7 @@ class Boid
} else {
kinematic.increaseSpeed(-1,0);
}
*/
} else {