Call of Duty 4: Gameplay standards
Gameplay Standards are extremely important when mapping a level as they determine how the player will see the world but also how the gameplay will be affected. Building a doorway to small or a ledge too high might result in poor game flow...
- 1 COD World unit = 1 inch = 0.08334 feet = 0.02778 yard
- 1 COD World unit = 2.54 centimeters = 0.0254 meters
Doorways and windows
Doorways = 56 units wide/96 units high
For high traffic areas it is sometime best to make it a double door.
Double door = 128 units wide/96 units high
Window Height = 32 units from floor to the bottom of the window frame.
Window Frame = minimum of 46 units wide 72 units high. (Inside diameter)
Interior = 8 high / 10 deep 64 unit min. width
The tallest distance a player will climb automatically is 18 units. However, while 18 is the limit, stairs and curbs should be around 8 units high.
The highest a player can mantle ("climb") is eye level (approx. 64 units). Of course, if the player jumps, their eye level goes higher and they can climb higher things - but they player won't see the mantle icon if their eye isn't above the ledge.
Hallways = 489 units wide
Building wall/One story high = 128 units high
Wall thickness = 8 units
Columns = 32-48 units wide
A 32 unit wide column is barely enough to still offer valid cover for the player. And after the column_cover node animations have been added 32-48 units will also provide valid cover and firing angles from both sides of the column for AI as well.
Large - Four car width = 600 units
Small - Two Tank width = 300 units
Alleyway – small street = 300 units wide
Small = 128 units wide
Medium = 192 units wide
Large = 256 units wide (this is more for Singleplayer levels)
Standing cover height = 48 units high
Crouching = 32 units
Prone cover height = 16 units high
Prone crawling height clearance = 32 units high
These would be the range at which a firefight takes place. These ranges make sure the player is shooting at a target that is a good size to hit and interact with. This will help keep the levels from getting too big and having pixel shooting distances.
There is a model in the game called mw_scale_soldier. It has two rings around him, one at 600 and one at 1024. Based off of COD2’s weapons settings, 512 was a good distance to shoot an SMG at a target and 1024 was a good distance for a rifle. These can be adjusted if the new weapons get changed drastically. You can drop the model in your level to make sure your geo is not getting too big.
Standing = 72 units
Crouch = 36 units