View source for Dimensions

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The numbers below used default configurations and were only tested in [[Half-Life 2]] Single Player.

{{note|For {{tf2}} Team Fortress 2's dimensions see [[Team Fortress 2 Mapper's Reference]] }}
{{note|For {{dods}} Day of Defeat: Source dimensions see [[Day of Defeat: Source Mapper's Reference]] }}
{{note|For {{as}} Alien Swarm's dimensions see [[Alien Swarm Mapper's Reference]] }}
{{note|For {{csgo}} Counter-Strike: Global Offensive dimensions see [[Counter-Strike: Global Offensive Mapper's Reference]] }}

==Source Engine Scale Calculations==
The [[Source Engine]] 'game unit' corresponds to the Grid Unit in [[Hammer]] and [[XSI]] editors. The Scale used for Source game maps and models is based on the [http://en.wikipedia.org/wiki/Foot_%28length%29 Imperial Foot] so Metric measurements do not translate easily. {{note|Some handy online measurement conversion calculators include [http://www.onlineconversion.com/length_common.htm distance] and [http://www.onlineconversion.com/speed_common.htm speed]. A very basic Vista Sidebar gadget is available [http://www.new-life.org.au/~tin/SourceCalc.gadget here] to calculate map units (no others) from real world units (meter, centimeter, inch and foot). There is also [http://www.moddb.com/engines/source/downloads/hammer-units-conversion-tool another useful tool], which integrates into Hammer, for converting all three types of game units into metric or imperial units on-the-fly all the while working on objects. And lastly a small [http://www.codersoft.net/SourceUnitConverter.exe standalone application] for converting map, character model, prop model, and sky box units to and from metric and imperial units.}}
{{note|Hammer units are equal to 3DSMax's generic units.}}
# Maps, architecture and prop models use a scale of '''1 foot = 16 units'''.
# Skyboxes (which are 1/16th scale of ordinary maps) use '''1 foot = 1 unit'''.
# Human Character models for [[Source Engine]] currently use '''1 foot = 12 units'''. 
Texturemaps are applied to Models and Brushwork in the [[Source Engine]] and are therefore scaled relative to game units.
* At the default [[Texturemap]] scale (0.25) '''1 texture pixel = 0.25 x 0.25 units''' (or 4x4 texels = 1 grid unit). Eg: an (undistorted) 512 x 512 texture covers 128 x 128 game units.
* At the default [[Lightmap]] scale (16) '''1 lightmap pixel = 16 x 16 units'''.
Speed is usually given in map-units per second. To convert this to Miles per Hour, multiply by (15/352).

===Map Grid Units: quick reference ===
 Map Grid    Imperial    Metric
 
      1  =   0.75"   =   19.05mm
      2  =   1.5"    =   38.10mm
      4  =   3"      =   76.20mm
      8  =   6"      =  152.40mm
     16  =   1'      =  304.80mm
     32  =   2'      =  609.60mm
     64  =   4'      =    1.22m
    128  =   8'      =    2.44m
   (160  =  10'      =    3.05m
    256  =  16'      =    4.88m
    512  =  32'      =    9.75m
 
 Player Collision Hull
     32  =  2' 0"    width & length
     36  =  2' 3"    height crouching
     72  =  4' 6"    height standing
 
 Player Eyelevel
     28  =  1' 9"    height crouching
     64  =  4' 0"    height standing
 
 Architecture
    128  =  8' 0"    normal corridor height
     64  =  4' 0"    normal corridor width
    108  =  6' 9"    normal door height
     48  =  3' 6"    normal door width

=== Skyboxes ===
* 1 skybox grid unit = 1 ft
* 1 mile = 5,280 ft (1/4 mile = 1,320 ft).
* 1 acre = 66 x 660 ft (209 x 208 ft).
* 100 yards = 300 ft.
* 100 meters = 328 ft.
* 1 hectare = 328 x 328 ft.
* 2 hectares = 656 x 328 ft (=464 x 464 ft). 
* 3 hectares = 984 x 328 ft (=568 x 568 ft).
* 4 hectares = 656 x 656 ft.

== Player Collision Hull ==
These are the numerical values related to dimensions while mapping. They include the minimum space required for player passage. See also [[Player Hull]].

===Ground Obstacle Height===
[[Image:Units01.jpg|thumb|left]]
This is the maximum height, in units, an object can be while still allowing the player to walk over it.
* Crouched: 18
* Standing: 18


{{clr}}

===Overhead Obstacle Height===
[[Image:Units02.jpg|thumb|left]]
This is the minimum distance, in units, that can be between the ground and an object while still allowing the player to pass underneath.
* Crouched: 37
* Standing: 73
* Left 4 Dead Crouched: 56
* Counter-Strike Source Crouched: 48
* Counter-Strike Source Standing: 63
* CS:GO Crouched: 55
* CS:GO Standing: 73

{{clr}}

===Minimum Path Size===
[[Image:Units03.jpg|thumb|left]]
This is the minimum size, in units, that can be between two objects while still allowing the player to pass between them. 

* Width: 33 (Between collision surfaces oriented along the x or y axis.)
* Width: 46 (Walls rotated 45 degrees to grid.)
* Width: 65 (On-axis width between walls skewed to 45 degrees relative to grid.)
* Height: 37

{{clr}}

===Gradient===
This is the maximum slope angle, in degrees from the horizontal, that the player can scale. Anything steeper than this is un-climbable.

* Gradient: 45&deg;

===Reach===
* Automatic pick up item (ammo/weapon): 25 from center. ie 9 units beyond the Player Collision Hull.
* Max Distance to '''use''' switch/door-handle/etc: 82 units.

== Player Viewpoint ==
=== Field of View===
Change the default Horizontal [[FOV]] in HL2 by typing <code>fov xx</code> in the console, where xx is the number in degrees.
* Player default = 75&deg;
* View Model = 54&deg; (<code>viewmodel_fov</code>)
* Suit Zoom = 25&deg;
* Crossbow = 20&deg;
* HL2 Jeep = 90&deg; (<code>r_jeepFOV</code>)

=== Eyelevel ===
This is the Height above the floor on which the player is standing.
* Crouch: 28 units (+ Jump = 49 units)
* Stand/Walk/Run/Sprint: 64 units (+ Jump = 85 units)
* Jump: adds 21 units.
* CSGO Crouch: 46 units (+ Jump = 103 units)
* CSGO Stand/Walk/Run/Sprint: 64 (+ Jump = 119 units)

==Player Movement Data==
These are the numerical values for the various settings related to movement in [[Half-Life 2]].
===Speed===
* Crouching: 63.33 (2.7 mph)
* Walking: 150 (6.4 mph)
* Running: 190 (8.1 mph)
* Sprinting : 320 (13.6 mph)
* Surface Swim Speed: 152 (6.5 mph)
* Surface Swim Fast Speed: 256 (11.3 mph)
* Surface Swim Slow Speed: 120 (5.1 mph)
* Aux power flashlight: 43 seconds

===Sprinting===
* Speed: 320 units per second (13.6 mph)
* Max Distance: 2560
* Max Duration: 8 seconds
* Recovery time: 8 seconds
====Sprinting with Flashlight====
* Max Distance: 1920
* Max Duration with flashlight: 6 seconds

===Jumping===

====Vertical (To High Point)====
This is the maximum height, in units, an object can be while still allowing the player to jump on top of it. 

  HL2         Step Height   +Jump     +Jump-Crouch   
  Crouching:      18         21         21        
  Standing:       18         20         56        
  Walking:        18         20         56        
  Running:        18         20         56        
  Sprinting:      18         20         56       

  CS:S        Step Height   +Jump     +Jump-C   +C-Jump-C
  Crouching:      18         56          -         -
  Standing:       18         52         61        65
  Walking:        18         52         61        65
  Running:        18         52         61        65
  Sprinting:      18         52         61        65

====Horizontal (To Equal Height)====
This is the maximum distance, in units, that can be between two objects of the same height, while still allowing the player to jump from one object to the other. 

* Stationary: 84
* Stationary crouched: 40
* Crouched: 99 now 62
* Walking: N/A will not jump while walking
* Running: 176
* Running crouch-jump: 225
* Sprinting crouch-jump: 272

====High Point to Low Point====
This is the distance while falling to a lower point.

* Taking no damage: Drop 185 : Span 415.
* Taking 98 damage: Drop 692 : Span 540.

====Jumping Using the Gravity Gun====

Firing a single shot straight down at a prop_physics model (props_debris/metal_panel01a.mdl) = 350 units

Jumping, pulling, then firing, then pulling, and firing again = 400+ units

===Falling Damage===
This is the damage taken when falling straight down.
* Terminal velocity: 3500 (150mph)

{|style="background:transparent;"
|style="vertical-align:top;"|
{| class=standard-table
! Domain<br />Minimum || Domain<br />Maximum || Health<br />Lost
|-
| 000 || 240 || 0 
|-
| 241 || 249 || 2
|-
| 250 || 257 || 4
|-
| 258 || 265 || 6
|-
| 266 || 274 || 9 
|-
| 275 || 282 || 11 
|-
| 283 || 292 || 13 
|-
| 293 || 301 || 15 
|-
| 302 || 309 || 18 
|-
| 310 || 318 || 20 
|-
| 319 || 327 || 22 
|-
| 328 || 337 || 24
|-
| 338 || 347 || 27 
|-
| 348 || 357 || 29 
|-
| 358 || 366 || 31
|-
| 367 || 376 || 34
|-
| 377 || 387 || 36
|-
| 388 || 396 || 38
|-
| 397 || 408 || 40
|-
| 409 || 417 || 43
|-
| 418 || 428 || 45
|-
| 429 || 439 || 47
|-
| 440 || 450 || 49
|}
|style="width:30px;"|
|style="vertical-align:top;"|
{| class=standard-table
! Domain<br />Minimum || Domain<br />Maximum || Health<br />Lost
|-
| 451 || 461 || 52
|-
| 462 || 472 || 54
|-
| 473 || 483 || 56
|-
| 484 || 495 || 59
|-
| 496 || 507 || 61
|-
| 519 || 529 || 65
|-
| 530 || 542 || 68
|-
| 543 || 554 || 70
|-
| 555 || 567 || 72
|-
| 568 || 579 || 75
|-
| 580 || 592 || 77
|-
| 593 || 604 || 79
|-
| 605 || 617 || 81
|-
| 618 || 630 || 84
|-
| 631 || 643 || 86
|-
| 644 || 656 || 88
|-
| 657 || 670 || 90
|-
| 671 || 683 || 93
|-
| 684 || 697 || 95
|-
| 698 || 711 || 97
|-
| 712 || 725 || 99
|-
| 726 || <32768 || 100
|}
|}

{{note|Falling into water ><nowiki>=</nowiki>2 units negates all fall damage.}}


===Swimming Underwater===
* Speed: 152 (6.5 mph)
* Sinking Speed (no keys): 48 (2.0 mph)
* Max Distance (no damage): 2523
* Max Distance (still alive): 3848
* Max Depth & return to surface (no damage): 1325
* Max Depth & return to surface (10 hp remaining): 2000
====Swimming Underwater with Flashlight====
* Max Distance (no damage): 2170
* Max Distance (still alive): 3535
* Max Depth & return to surface (no damage): 1190
* Max Depth & return to surface (still alive): 1850

==Vehicles==
===Buggy===
* Buggy speed normal: 821.3 (35 mph)
* Buggy reverse: 469.3 (20 mph)
* Buggy speed turbo: 1173.3 (50 mph)
* Climb angles: ramp = 3900 l x 1670 h 564 l x 504 h
* Climb angle from stopped: 63 deg
* Climb angle no turbo: 66 deg
* Climb angle turbo: 50 deg long 42 deg short
* Jump distance normal: 216
* Jump distance turbo: 860
* Overhead obstacle height: 90
* Minimum path width: 118
* Stall depth: 40 sputters at 37

===Airboat===
* Airboat forward: 797.9 (34 mph)
* Airboat reverse: 797.9 (34 mph)
* Climb angle no full throttle momentum: 55
* Jump distance same height: 856 
* Overhead obstacle height: 86
* Minimum path width: 86

===Muscle Car===

==See Also==
* [[AI Metrics]]

[[Category:Level Design]]
[[Category:Level Design FAQ]]