fix collision detection

1 files changed, 1 insertions, 1 deletions

diff --git a/src/drone_controller.cc b/src/drone_controller.cc
index 514a166..3284acf 100644
--- a/src/drone_controller.cc
+++ b/src/drone_controller.cc
@@ -116,7 +116,7 @@ void DroneController::seek(int frame) {
 
 
 void DroneController::computeCollisions(double sphere_radius) {
-	double sqDist = sphere_radius * sphere_radius * 2;
+	double sqDist = sphere_radius * sphere_radius * 4;
 	for (int i = 0; i < duration; i++) {
 		for (Drone &a : drones) {
 			a.setTo(i);