Retinal scanners
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January 2024
January 2024
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Half-Life (Goldsource)
The primary entities of a HL1 scanner are listed below. A complete tutorial (which is the source of the listed information) can be found here
- The player triggers (via a
trigger_once
) the whole sequence - The barney walks over to the scanner performs his "retina" animation (
scripted_sequence
) - The scanner model (a
func_button
) is activated so it flashes - Some sounds (
ambient_generic
) are played to show that the scanner is operating - The door (
func_door
) is triggered to open
Half-Life 2
- Dr. Kleiner walks over to the picture frame (a
prop_dynamic
parented to afunc_rot_button
) using ascripted_sequence
. As Kleiner plays his picture frame animation, the picture rotates into place. - The button triggers a
func_door
to open up and reveal the scanner (aprop_dynamic
) - The scanner gets pushed out by an invisible
func_door_rotating
beneath it. - Kleiner walks over to the scanner using another scripted sequence and starts his eyescanner animation.
- The prop_dynamic scanner model changes its appearance using a
material_modify_control
entity. - Several
ambient_generic
entities play eyescanner sounds. - After a period of time, a
func_door
is triggered to open, allowing the player to walk through.