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Bitterkoekje
Feb Member 2015

Bitterkoekje

Posts: 918Gold Posts by user Forum Profile RuneMetrics Profile
| 6.3 |
Bow special attacks


The special attacks of the following ranged weapons have odd behaviour:
• Magic longbow
• Magic shortbow
• Magic composite bow
• Seercull
• Rune thrownaxe
• Ogre bow (normal attacks)

For the damage calculation, these weapons do not stack with: prayers, the void bonus, salve amulets and the slayer bonus. Instead, calculate the maximum hit as follows:

a.
Take the visible ranged level from the skills interface.
b.
Add up +10.
c.
Let this equal 'A' in the formula below.
d.
Take the ranged strength bonus from the equipment stats interface and let this equal 'B' in the formula below.
e.
Max hit = 0.5 + A * (B+64) /640
f.
Round down the max hit to the nearest integer.
g.
Add up +1 damage if:
• You're using a rune thrownaxe.
• You're using a magic short bow in PvP combat.


| 6.4 |
Unique combat mechanics


This part will cover information on several unique combat facts not essentially related to damage ouput.

• Chinchompa's: distance in tiles and combat stance (short, med or long fuse) is confirmed related to accuracy on the target. More info: see page 40 post #9.
• Auto-retaliatie mechanics: see page 36 post #6
• Dragonfire shield special: the user's defence level plays a role in calculating accuracy. Prayer boost is ignored. Damage is between 15-25.
• Special attacks roll versus a predefined defence roll. Switching combat styles does not change this. Below are some confirmed mechanics:

Abyssal whip: slash
Arclight: stab
Dragon claws: slash
Dragon dagger: slash
Dragon mace: crush
Dragon scimitar: slash
Dwarf multicannon: ranged
Godsword: slash (confirmed for ZGS)
Halberd: slash (confirmed for Chally)
Saradomin sword (and blessed): magic

• Dragon claws:

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10-Mar-2015 23:25:57 - Last edited on 06-Nov-2017 08:24:20 by Bitterkoekje

Hymbso

Hymbso

Posts: 2,191Mithril Posts by user Forum Profile RuneMetrics Profile
Where did you get that accuracy formula from? I have an accuracy formula written from a thread from like 2009 or something where they tried to figure it out with empirical tests, but it's different.

edit: I mean the max roll formula.

11-Mar-2015 13:39:21 - Last edited on 11-Mar-2015 13:40:21 by Hymbso

Hymbso

Hymbso

Posts: 2,191Mithril Posts by user Forum Profile RuneMetrics Profile
Well the formula I have for the die size is: effective_attack * (1 + attack_bonus/64) and vice versa for defence. I remember that they determined in that thread that if the defender's defence bonus was -64, then you never miss. Both of these formulas are consistent with that (because 8 + (-64/8) = 0 and 1 + (-64/64) = 0).

Effective levels are calculated exactly the same in these notes I have though.

11-Mar-2015 14:35:54 - Last edited on 11-Mar-2015 14:37:13 by Hymbso

Bitterkoekje
Feb Member 2015

Bitterkoekje

Posts: 918Gold Posts by user Forum Profile RuneMetrics Profile
Hymbso said:
I remember that they determined in that thread that if the defender's defence bonus was -64, then you never miss.


Well, it is currently in OSRS impossible to have -64 defence bonus in any stat, but it's possible to miss even when the defender has -64 bonus.
The inverse, with -64 atk, it is impossible to hit. This is what splashers use.

With -64 defence, it's still possible for the attacker to fail/miss an attack by rolling a 0 on the attack die, because a draw/tie or equal roll is in advantage of the defender.
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11-Mar-2015 16:01:48 - Last edited on 11-Mar-2015 16:02:04 by Bitterkoekje

Hymbso

Hymbso

Posts: 2,191Mithril Posts by user Forum Profile RuneMetrics Profile
Bitterkoekje said:
Well, it is currently in OSRS impossible to have -64 defence bonus in any stat, but it's possible to miss even when the defender has -64 bonus.
The inverse, with -64 atk, it is impossible to hit. This is what splashers use.

With -64 defence, it's still possible for the attacker to fail/miss an attack by rolling a 0 on the attack die, because a draw/tie or equal roll is in advantage of the defender.
Makes sense.

15-Mar-2015 23:00:43

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