Relaced two bogus implementations of -speed with one that actually works. Should only affect AIs trying to intercept drifting targets, though.

git-svn-id: http://svn.berlios.de/svnroot/repos/oolite-linux/trunk@3698 127b21dd-08f5-0310-b4b7-95ae10353056

src/Core/Entities/Entity.m

@@ -696,7 +696,7 @@ static NSString * const kOOLogEntityUpdateError				= @"entity.linkedList.update.
 
 - (double) speed
 {
-	return magnitude2(velocity);
+	return magnitude([self velocity]);
 }
 
 

src/Core/Entities/ShipEntity.m

@@ -2055,19 +2055,9 @@ ShipEntity* doOctreesCollide(ShipEntity* prime, ShipEntity* other)
 			bounding_box_add_vector(&totalBoundingBox, sebb.min);
 		}
 	}
-	
 }
 
 
-// override Entity version...
-//
-- (double) speed
-{
-	return sqrt(velocity.x * velocity.x + velocity.y * velocity.y + velocity.z * velocity.z + flightSpeed * flightSpeed);
-}
-
-
-
 - (void)respondToAttackFrom:(Entity *)from becauseOf:(Entity *)other
 {
 	Entity				*source = nil;