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As with every video game, there is extensive math behind Call of Duty, which decides the outcome of gameplay. This article focuses on the game's mechanics.

Movement Edit

Sprinting increases the player's movement speed by half of its base value, and all weapons have the same sprint duration except the M14 with ACOG, M21 and the P90 in Call of Duty 4, the USAS 12, MP9 and Skorpion in Call of Duty: Modern Warfare 3 and the Combat Knife in Call of Duty: Black Ops II and Call of Duty: Ghosts.

Call of Duty 4: Modern Warfare & Modern Warfare RemasteredEdit

Movement speed is determined from the player's primary weapon upon spawning. The following table lists the base movement speed depending on the weapons, as well as the movement speed when aiming down the sights.

Weapons Movement Speed (normal) When aiming down the sights
Submachine Guns
(except the AK-74u)
100% 80%
AK-74u 95% (CoD4), 100% (Remastered) 76% (CoD4), 80% (Remastered)
Shotguns 100% 80% (W1200)
40% (M1014 and Kamchatka-12)
Sidearms 80%
RPG-7 40%
Melee (Remastered) N/A
Assault Rifles
Sniper Rifles
95% 38%
Light Machine Guns 87.5% 35%
  • Overkill can be used to achieve a higher mobility rating. For example, a player with a shotgun as their primary weapon and an LMG as their secondary weapon will always have full mobility.
  • Extreme Conditioning doubles the player's sprint duration.
  • In the PC and Wii versions of Call of Duty 4: Modern Warfare, the M14 with ACOG, the P90 and the M21 have sprint duration values that are 1.75x that of all other weapons. This was patched on both the Xbox 360 and PlayStation 3 versions of the game, and wasn't carried over in Call of Duty: Modern Warfare Remastered.

Call of Duty: World at WarEdit

Movement speed is determined from the player's primary weapon upon spawning.

Weapons Movement Speed Aiming down the sights
Submachine Guns
Shotguns
FG42 and Browning M1919
100% 40%
Sidearms 80%
Rifles
Bolt-Action Rifles
BAR
95% 38%
Type 99, DP-28 and MG42 87.5% 35%
M9A1 Bazooka Switching to the Bazooka drops
the movement speed to 75%
24%

Call of Duty: Modern Warfare 2Edit

Movement speed is determined from the player's primary weapon upon spawning, as in Call of Duty 4.

Weapons Movement Speed Aiming down the sights
Submachine Guns
Machine Pistols
Handguns
SPAS-12 and Model 1887
100% 80%
Sniper Rifles
Launchers
AA-12, Striker and M1014
40%
Ranger N/A
Assault Rifles 95% 38%
Light Machine Guns 87.5% 35%
Riot Shield 80% N/A
  • Lightweight gives the player a constant mobility multiplier of 1.07x.
  • Marathon gives the player an unlimited sprint duration.
  • When using One Man Army, the player's mobility will change with their primary weapon.
  • While using the P90 with the Extended Magazines attachment, a player's sprint time will increase to 7 seconds (75% bonus).

Call of Duty: Black OpsEdit

Movement speed is determined from the player's weapon that is currently equipped.

Weapons Movement Speed Aiming down the sights
Submachine Guns
Handguns
Stakeout
100% 80%
Shotguns (except the Stakeout)
Crossbow and Death Machine
40%
Ballistic Knife
Underbarrel attachment selected
Equipment
N/A
Assault Rifles
Sniper Rifles
95% 40%
Light Machine Guns 87.5%
Launchers
Grim Reaper & Valkyrie Rockets
80%
  • Lightweight gives the player a constant mobility multiplier of 1.07x.
  • Marathon doubles the player's sprint duration, and its Pro version gives the player unlimited sprint duration.
  • Movement speed can be modified in Custom Games, to make the player move faster or slower. The player can multiply the movement speed by up to 200%.
  • Also because of the perk modifiers, a player can modify Lightweight for incredible speeds.
  • While sprinting, it is possible to Dive to Prone.

Call of Duty: Modern Warfare 3Edit

Movement speed is determined from the player's weapon with the lowest mobility. For example, a player using an SMG replacing his secondary with an LMG (either through Overkill or by picking it up from the ground) will move at 80% speed.

The Speed proficiency increases movement speed by 10%, but only when using that weapon, so a player with an LMG with Speed and a secondary will move at 88% when using the LMG and at 80% when using the secondary (unless Speed is aquired through the Specialist bonus).

Items Movement Speed Aiming down the sights
Submachine Guns
Machine Pistols
Handguns
100% 80%
Shotguns
Launchers
40%
Assault Rifles
L118A, Dragunov and MSR
90% 36%
Light Machine Guns
Barrett .50cal, AS50 and RSASS
80% 32%
Riot Shield N/A
Becoming a Juggernaut Recon 60%
Becoming a Juggernaut 52%
  • Extreme Conditioning doubles the player's sprint duration.
  • Additionally, using the USAS 12, MP9 or Skorpion multiplies the duration the player can sprint by 1.75. Combining one of those weapons and Extreme Conditioning extends the time the player can sprint to 3.5x higher than normal, 14 seconds.

Call of Duty: Black Ops IIEdit

Movement speed is determined from the currently equipped weapon. For example, if the player is holding an LMG, they will move at 0.9 of the base speed. However, if they switch to a shotgun, pistol, SMG or crossbow, they will move at full speed.

Weapons Movement Speed Aiming down the sights
Ballistic Knife and Combat Knife 102% N/A
Submachine Guns 100% (101.25% for the MSMC) 80% (84% for the MSMC)
Handguns 100% 84%
Shotguns 80%
Crossbow 40%
Assault Rifles 95% (96.5% for the Type 25) 40%
Underbarrel Grenade Launcher
selected
96.25% (except on the M8A1,
where it remains 95%)
N/A
Sniper Rifles 95% (96% for the Ballista) 40% (44% for the Ballista)
Death Machine 90% 48%
Launchers
War Machine
40%
Light Machine Guns 32%
Assault Shield N/A

Call of Duty: GhostsEdit

The player's movement speed is based on their currently held weapon.

Weapons Movement Speed Aiming down the sights
Submachine Guns
Handguns
100% 80%
Shotguns 40%
Combat Knife N/A
Kastet 95% 38%
Assault Rifles
Marksman Rifles
Chain SAW
USR
MK32
90% 36%
Sniper Rifles (except the USR and the Lynx) 85% 34%
Light Machine Guns (except the Chain SAW)
Lynx
Panzerfaust
Minigun and MAAWS
80% 32%
Riot Shield N/A

Call of Duty: Advanced WarfareEdit

All players have unlimited sprint in Multiplayer. The player's movement speed is based on their currently held weapon. Additionally, some supply drop variants (for shotguns and sniper rifles, as well as the SAC3 and the 1911) change the player's movement speed.

Base weapons:

Weapons Movement Speed Aiming down the sights
Submachine Guns
Pistols
M1 Irons
100% 80%
Shotguns
Crossbow
Ripped MG, Rocket and Energy Turrets
40%
Combat Knife N/A
Assault Rifles
Sniper Rifles
90% 36%
Heavy Weapons 84% 32%
Launchers
MDL
80% 32%
Heavy Shield N/A

Supply drop variants:
(Note that the movement while aiming down the sights is unchanged from the base weapons, except for the Bulldog - Breacher where it is decreased to 36%):

Weapons Movement Speed Weapons Movement Speed
1911 - Royalty 105% Tac-19 - Sledgehammer 96%
SAC3 - Blood & Glory 104% 1911 - Hammer Bite 95%
SAC3 - Misery & Company
Tac-19 - Runner
Tac-19 - Bang Stick
Tac-19 - Jab
Blunderbuss - Scallywag
Blunderbuss - Thunderpipe
Blunderbuss - Dragon Fire
102% Lynx - Slung
MORS - Slung
MORS - Penetrator
NA-45 - Sharp Shooter
Atlas 20mm - Talent
SVO - Fury
91.8%
SAC3 - Rapid
Tac-19 - Lite Trigger
Tac-19 - Round House
Tac-19 - Upper Cut
S-12 - Adroit
Bulldog - Grip Taped
Blunderbuss - Musketeer
Blunderbuss - Culverin
Blunderbuss - Handcannon
CEL-3 - Infected
98% Bulldog - Breacher 90%
Lynx - Snake Oil
MORS - Quick Bolt
MORS - Ransacker
MORS - The Doctor
Atlas 20mm - Interrupt
SVO - Return to Sender
88.2%

Call of Duty: Black Ops IIIEdit

All players have unlimited sprint in Multiplayer and all campaign missions (except the level "Black Ops"). Movement speed depends on equipped weapon. Additionally, several weapons in Black Ops III get their movement speed reduced while firing the weapon (be the sights aimed down or not).

Weapons Movement Speed Aiming down the sights
Sparrow
Annihilator
Tempest
Scythe
War Machine
H.I.V.E.
Purifier
Gravity Spikes
Ripper
• 100%
• 100%
• 100% (65% when firing)
• 100% (30% when firing)
• 100%
• 100%
• 100%
• 100%
• 110%
• 96% (92% when firing)
• 84% (60% when firing)
• 40% (26% when firing)
• 34% (30% when firing)
• 60%
• 40%
• 40%
• N/A
• N/A
Pistols (except the Rift E9) 100%
(95% when dual-wielded)
84%
(N/A when dual-wielded)
Shotguns (except the Banshii) 100% (95% when firing) 80% (38% when firing)
Rift E9
Banshii
NX ShadowClaw
100% 80%
Kuda, VMP and Weevil
HG 40 and PPSh
HLX 4
• Other Submachine Guns
• 100%
• 100% (95% when firing)
• 95% (90% when firing)
• 100%
• 76%
• 80% (76% when firing)
• 40% (38% when firing)
• 80%
Melee Weapons
Fists
Ballistic Knife
100% N/A
Peacekeeper MK2
Man-O-War and Galil
• Other Assault Rifles
• 97.5% (90% when firing)
• 95% (80% when firing)
• 95% (90% when firing)
• 60% (38% when firing)
• 40% (32% when firing)
• 40% (38% when firing)
D13 Sector 95% 40%
Sniper Rifles 95% (80% when firing) 40%
Dingo
BRM and R70 Ajax
Gorgon
48 Dredge
• 95% (70% when firing)
• 95% (60% when firing)
• 95% (55% when firing)
• 95% (45% when firing)
• 40% (20% when firing)
• 40% (16% when firing)
• 28% (10% when firing)
• 38% (10% when firing)
Launchers 90% 40%

StancesEdit

Stances are a position that the player's character assumes that has the capacity to affect their movement speed, accuracy, and fire exposure. The three stances have been common to the series since the first game.

  • Standing: The player is fully standing and capable of moving at 100% of their mobility (defined as the base speed multiplied by the movement speed multiplier of the weapon). This stance is also the only stance in which the player can sprint. As a result, this stance is best when on the move or when it is necessary to move from cover to cover. However, while standing bullet spread is increased, and the player is a larger target to the enemy. In addition, standing players make noise when they run, which allows them to be heard by enemies.
  • Crouching: The player is crouched to about half their height and moves at 60% of their base mobility. While the player moves slower, they are capable of taking advantage of cover that is about waist-height and their accuracy is increased. Crouching players do not make noise as they walk around (except in Modern Warfare 3), making it the best stance for sneaking up behind an enemy when there isn't much action going on to mask the sound of footsteps.
  • Prone: The player is prone on the ground, and moves at 15% mobility. The player moves extremely slow, but they present a very small target to the enemy at longer ranges. Accuracy is also best when prone. Prone is best utilized to take full advantage of cover, when taking shots at targets farther away, or to minimize damage taken in close quarters combat. A crawling animation was introduced for the first time in Call of Duty: Black Ops II.
  • Lifting: In certain situations, such as in "One Shot, One Kill" (a singleplayer mission in Call of Duty 4: Modern Warfare), the player must carry another character. While the player moves at 100% speed, the player is unable to fire a weapon, perform a melee attack, sprint, or vault over obstacles until the character has been put down.
  • Call of Duty: Modern Warfare 2 was the last Call of Duty title to include Stance icons.

Health Edit

Main article: Health system

A player's health is determined by the game mode being played.

  • Health regenerates after being hit and not killed, except in Hardcore and Old School, which do not feature health regeneration.
  • Five seconds after surviving the most recent damage, all health is restored when normal health regeneration is on and maximum health is 100.

Weapon and Explosive damage Edit

Every weapon in the game deals a set amount of damage. As the range between the player and the target increases, damage is reduced until it reaches a set minimum amount. These charts show each weapons' damages, ranges and reload times, among other things.

Call of Duty 4Edit

CoD4WeaponDataSheetCoD4ExplosivesDataSheet

Call of Duty: World At WarEdit

CoD5WeaponSheet

RAYGUN


CoD5ExplosivesDataSheet

[1]

Modern Warfare 2Edit

Interactive Modern Warfare 2 Flash Chart

Weapon Behavior Edit

There are many more in depth statistics which determine weapon behavior.

HitscansEdit

One of the most important things to take note of is that guns in Call of Duty do not shoot projectiles. Instead, they shoot Hitscans, which are perfectly straight, infinitely thin lines that travel at an infinite velocity. All hitscans travel forever except for those fired from shotguns, which disappear at a set distance. This means that all weapons in Call of Duty, excluding weapons that obviously do not use hitscans, such as the RPG-7, and certain weapons in Zombies, are perfectly accurate at an infinite range while aiming down the sights. Misses are caused by idle sway, recoil, misaligned sights, spread, and lag.

Idle swayEdit

Idle sway is the movement of the weapon's sights without any input from the player. (In Call of Duty: Modern Warfare 3, all weapons now feature idle sway, where as previously only certain weapons had idle sway.) Idle sway is simply determined by two numbers; idle amount and idle speed. Idle amount refers to the radius where the weapon will naturally sway, while speed refers to the speed at which it moves around this area.

RecoilEdit

Recoil is slightly more complex. Recoil is a combination of two factors; View Kick, Gun Kick. View Kick is determined by five numbers; maximum horizontal, minimum horizontal, maximum vertical, minimum vertical, and center speed. View kick will move the view of your camera when firing a weapon. Gun kick is similar to view kick, in that it has its own horizontal, vertical, and center speed figures which determine it's magnitude of kick. However, unlike view kick, gun kick moves the sights relative to the screen. Each weapon has its own set of numbers. 

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Every time a shot is fired, the game randomly chooses two numbers, one for vertical recoil and one for horizontal recoil. These numbers will be in between the weapon's maximum and minimum values for each shot. If a number is positive, it is right or up, and if it is negative, it is left or down. Thus, if a weapon has a positive minimum value or a negative maximum value, it will always kick in that direction.

Of note are certain attachments which affect view kick and gun kick. The specific higher magnification scopes (Thermal, Variable Zoom, etc.) will affect gun kick. Because gun kick is the movement of a weapon model, it is entirely removed when aiming down these sights (since there is no weapon model to view). This is not the case in Ghosts, where gun kick will still be applied when aiming down these specific sights. In Ghosts and Advanced Warfare, Rapid Fire will also give an increase in view kick. 

Center speedEdit

Center speed is how fast your view and sights reset between shots. It takes effect immediately upon firing, but during fully automatic fire there is usually too much recoil for the sights to completely re-center after each shot. Low recoil is a result of a high center speed, minimum and maximum numbers having low absolute values and balanced values on all sides, and the weapon's rate of fire.

It should be noted that some attachments (Grip, and various optical attachments) can change Center Speed, leading to a decrease or increase in recoil. This is also the case for Rapid Fire in Black Ops 2, which will decrease Center Speed by 15%.

Time to KillEdit

Time to Kill, usually abbreviated as TTK, is how long a gun takes to kill an enemy from the time the trigger is pulled until the target is dead. In many role-playing games, players use damage per second, or DPS, to determine a weapon's effectiveness. However, in a shooter such as Call of Duty, where everyone has equal health and firefights are very fast, it is far more beneficial to determine TTK than DPS to determine how fast a weapon could kill. However, due to the randomness of all gunfights it becomes an irrelevant factor unless you also calculate the probable misses which makes it a much more tedious process. To calculate a weapon's TTK, all that is needed are damage values and the delay between shots. For example, a gun that fires at 750 RPM has a delay between shots of .08 seconds. If that gun does 30 damage, it takes four shots to kill. The first shot comes out the instant the trigger is pulled, so the formula for determining a weapon's TTK is d(s-1), where d is the delay between shots and s is the number of shots needed to kill. This means that any weapon that kills in one shot will technically kill in zero seconds flat. Because most weapons lose damage over range, it can be necessary to perform multiple TTK calculations for a single gun. Beware that even a few missed shots will greatly increase a weapon's TTK, so it can be beneficial to plug in different amounts of misses using the formula d(s-1+m), where m is the number of misses. Weapons with low recoil are the most likely to actually reflect TTK with no misses.

References Edit

  1. http://denkirson.xanga.com

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