Thread: Attack Accuracy formula

Results 1 to 8 of 8
  1. #1 Attack Accuracy formula 
    Banned

    Join Date
    Jun 2009
    Posts
    2,916
    Thanks given
    169
    Thanks received
    806
    Rep Power
    0
    ‚¤º°˜¨Calculation¨˜°º¤‚¸

    Determine your accuracy in the following three steps, mostly based on your level and equipment bonus. For more information about specific steps: have a look at the 'Notes' in post 4 of this page.



    ****************************************
    1. Calculate the effective level
    ****************************************


    Melee, Ranged and Magic attack:

    • Take your current level from the stats interface (Attack, Ranged or Magic level)
    • Multiply by a prayer or curse stat adjustment and round down.
    • If Turmoil is activated, add up 0 to 14. (Attack level only)
    • Add up 8.
    • Add up the attack style bonus.
    • Multiply by the Void Set bonus.
    • Round down and let 'EA' equal this value from here on. (Effective Attack)


    Defence:

    • Take your current Defence level from the stats interface.
    • Multiply by a prayer or curse stat adjustment and round down.
    • If Turmoil is activated, add up 0 to 14.
    • Add up 8.
    • Add up the attack style bonus.
    • Let 'ED' equal this value from here on. (Effective Defence)


    Magic defence:

    • Take your current Magic level from the stats interface.
    • If Leech Magic OR a Wolpertinger is active, multiply by 1.05. If BOTH are active, multiply by 1.1.
    • Round down and let 'EM' equal this value. (Effective Magic Defence)

    • Multiply 'EM' by 0.7 and 'ED' by 0.3.
    • Round down both.
    • Add up 'EM' and 'ED'. And let this equal 'ED' in the defender's roll below.



    ****************************************
    2. Calculate the maximum roll
    ****************************************

    • Use next formulas to calculate the maximum rolls.

    (A) Attacker's roll:

    A = EA * (1 + Bonus/64)

    (D) Defender's roll:

    D = ED * (1 + Bonus/64)


    • Multiply by 10 and round down the roll to the integer.
    Optionally, multiply the maximum attack roll (A) by one of the listed special attacks:


    Melee:

    Abyssal whip: multiply by 1.1
    Abyssal vine whip: multiply by 1.25
    Barrelchest anchor: multiply by 2
    Brackish blade: multiply by 2
    Dragon dagger: multiply by 1.1
    Dragon longsword: multiply by 1.1
    Dragon slayer gloves: multiply by 1.1
    (Full) slayer helmet, Black mask: multiply by 7/6
    Salve amulet: multiply by 7/6
    Salve amulet (e): multiply by 1.2


    Ranged:

    Full slayer helmet, Focus sight: multiply by 7/6
    Magic longbow: always 100% accuracy
    Magic shortbow: multiply by 1.1
    Sharpshooter aura: multiply by 1.03
    Greater sharpshooter aura: multiply by 1.05


    Magic:

    Full slayer helmet, Hexcrest: multiply by 7/6
    Runic accuracy aura: multiply by 1.03
    Greater runic accuracy aura: multiply by 1.05


    • Round down the value.

    Also note that you cannot use Dragon Slayer Gloves, a Salve amulet and/or a Slayer helmet together. Slayer helmets have priority over Salve amulets, and Dragon Slayer Gloves have priority over Slayer helmets.



    ****************************************
    3. Calculate the accuracy
    ****************************************

    The chance to hit is:

    • If A<D:

    Accuracy = (A-1) / (2D)


    • If A>D:

    Accuracy = 1 - (D+1) / (2A)



    This value (you may want to multiply it by 100) is an estimation of the accuracy. Note that the formula isn't 100% correct, so the results are slightly off.
    ¸‚¤º°˜¨Notes¨˜°º¤‚¸


    ________________________

    1. Attack style bonus
    ________________________

    The attack style bonus is determined by the type of attacking in the combat style interface.

    Melee:
    Accurate: add up 3 Attack levels
    Defensive: add up 3 Defence levels
    Controlled: add up 1 Attack and 1 Defence level

    Ranged:
    Accurate / Short fuse: add up 3 Ranged levels
    Long range / Long fuse: add up 3 Defence levels

    Magic:
    If the previous attack style was defensive before autocasting a spell was selected: add up 3 Defence levels. 'Toggle defensive casting' does not affect this.



    ________________________

    2. Prayer bonus
    ________________________

    Prayer adjustments will increase the visible level by a percentage.

    For Turmoil, multiply attack or defence by 1.15 and take the remaining bonus as an addition. So a 29% bonus equals 15% + 14.

    Magic boosting prayers do not affect magic defence, but magic curses do, however.
    Defence prayers or curses affect magic defence indirectly, via Defence.



    ________________________

    3. Void Knight Armour
    ________________________

    Melee Set: multiply by 1.1
    Ranged Set: multiply by 1.1
    Magic Set: multiply by 1.3



    ________________________

    4. Summoning Familiars
    ________________________

    Some familiars may modify the defence stats. Note that these modifications will be visible in the equipment stats screen and have already been calculated while the familiar is summoned.

    Iron Titan: all melee defence bonuses are multiplied by 1.1
    Steel Titan: all melee defence bonuses are multiplied by 1.15



    ________________________

    5. Dwarf multicannon (DMC)
    ________________________

    The accuracy of the multicannon is calculated in the same way as the accuracy of the user. The roll is based on the current attack style of the player. The cannon always has the same accuracy as the user at that moment. May not work for magic combat.
    Official from:

    Forums - RuneScape - MMORPG - The No. 1 Free Online Multiplayer Game
    Reply With Quote  
     

  2. Thankful users:


  3. #2  
    Banned

    Join Date
    Jul 2009
    Posts
    3,999
    Thanks given
    1,003
    Thanks received
    1,028
    Rep Power
    0
    Goodjob, will probably use these
    Reply With Quote  
     

  4. #3  
    Respected Member


    Join Date
    Jan 2009
    Posts
    5,743
    Thanks given
    1,162
    Thanks received
    3,603
    Rep Power
    5000
    This has been the 10th time I have seen this on here. Also this is a guess at the accuracy, Jagex have never released any parts of the calculation.
    Reply With Quote  
     

  5. Thankful user:


  6. #4  
    Chemist

    Advocatus's Avatar
    Join Date
    Dec 2009
    Posts
    2,622
    Thanks given
    201
    Thanks received
    813
    Rep Power
    1462
    Quote Originally Posted by 1776 View Post
    This has been the 10th time I have seen this on here. Also this is a guess at the accuracy, Jagex have never released any parts of the calculation.
    This. I implemented this awhile back. People actually didnt like it at all.
    Quote Originally Posted by blakeman8192 View Post
    Quitting is the only true failure.
    Reply With Quote  
     

  7. #5  
    Banned

    Join Date
    Jun 2009
    Posts
    2,916
    Thanks given
    169
    Thanks received
    806
    Rep Power
    0
    Quote Originally Posted by Advocatus Diaboli View Post
    This. I implemented this awhile back. People actually didnt like it at all.
    I did not know, anyways want me to delete?
    Reply With Quote  
     

  8. #6  
    Registered Member ashitrin's Avatar
    Join Date
    Jul 2010
    Posts
    560
    Thanks given
    41
    Thanks received
    78
    Rep Power
    70
    Looks good man.
    Reply With Quote  
     

  9. #7  
    Banned

    Join Date
    Jun 2009
    Posts
    2,916
    Thanks given
    169
    Thanks received
    806
    Rep Power
    0
    Quote Originally Posted by ashitrin View Post
    Looks good man.
    It's not mine
    Reply With Quote  
     

  10. #8  
    Banned

    Join Date
    Jan 2009
    Age
    31
    Posts
    2,661
    Thanks given
    66
    Thanks received
    207
    Rep Power
    0
    What ever it is i'm sure it's extremely basic just like the max hit and combat level ones are.
    Reply With Quote  
     


Thread Information
Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)


User Tag List

Similar Threads

  1. 97% Correct Accuracy formula
    By mgi125 in forum Informative Threads
    Replies: 54
    Last Post: 11-09-2012, 12:19 AM
  2. New Accuracy Formula
    By white full in forum Snippets
    Replies: 6
    Last Post: 08-30-2011, 09:10 PM
  3. leech spec attack formula z525
    By lt gangster in forum Help
    Replies: 0
    Last Post: 09-13-2010, 11:11 PM
  4. Custom Magic Accuracy Formula
    By white full in forum Snippets
    Replies: 1
    Last Post: 07-27-2010, 10:37 PM
  5. Attack Formula, discussion
    By Martin in forum RS2 Server
    Replies: 22
    Last Post: 02-25-2010, 10:55 PM
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •