```The other way of handling bullet collisions we will be looking at, is raycasting.
This method is extremely common in guns that have fast moving bullets that rarely change trajectory change over time.
Instead of creating a bullet object and sending it through space, we instead send a ray starting from the barrel/muzzle of the gun forwards. We set the raycast’s origin to the starting position of the bullet, and based on the length we can adjust how far the bullet ‘travels’ through space.
Note
While I cannot say for sure this is the case, these games probably use raycasts in some form or another: (These are entirely from my observations. They may be entirely wrong. I have never worked on any of the following games)
Halo (Assault rifles, DMRs, battle rifles, covenant carbine, spartan laser, and more)
Destiny (Auto rifles, pulse rifles, scout rifles, hand cannons, machine guns, and more)
Call of Duty (Assault rifles, light machine guns, sub machine guns, pistols, and more)
Battlefield (Assault rifles, SMGs, carbines, pistols, and more)
One huge advantage for this method is it’s light on performance. Sending a couple hundred rays through space is way easier for the computer to calculate than sending a couple hundred bullet objects.
Another advantage is we can instantly know if we’ve hit something or not exactly when we call for it. For networking this is important because we do not need to sync the bullet movements over the Internet, we only need to send whether or not the raycast hit.
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