Ymirheim Wiki - User contributions [en]

Combat Mechanics

2025-07-23T11:40:18Z

Darkt: small formatting to the hyper link

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This page describes various combat mechanics and their calculation.

== The Hit Chance Formula == 


The hit chance formula is <code>85% + (AttackerAccuracy - TargetEvasion)</code>
Hit chance is capped at 2% (meaning that your attacks now have only 2% chance to miss even if your Accuracy is way higher that the target’s Evasion) and at 95% (meaning that your attacks now have 5% chance to hit the target regardless of the target’s Evasion).

== The Cast Time Formula == 


The cast time formula is <code>BaseCastTime / (1 + (CastSpeed / 100))</code>
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== Damage Calculation ==

=== Skill attack value ===

Damage calculation for any combat skill (including normal weapon skill, aka auto attack) starts with calculating the attack value:
# Depending on the type of the attack (melee/ranged/magic), the maximum attack value is taken from the corresponding attack attribute (for example, for the melee attacks, the MeleeAttack attribute total value is taken). <code>maxAttack = MeleeAttackAttribute.Total</code>
# To determine the minimal attack value, balance factor is applied to the maximum attack value (using the result of the [[Combat_Calculation_Functions#line-172|MinAttackModifierPerBalance]] function). For example, if your balance is 60%, your minimal attack value is 60% of your maximum attack. <code>minAttack = (int)(maxAttack * MinAttackModifierPerBalance(MeleeBalanceAttribute.Total))</code>
# The same two steps are done to determine the minimal and maximum weapon attack (using the values of the `WeaponMeleeAttack`/`WeaponRangedAttack`/`WeaponMagicalPower` attributes: <code>maxWeaponAttack = WeaponMeleeAttackAttribute.Total</code> <code>minWeaponAttack = (int)(maxWeaponAttack * MinAttackModifierPerBalance(MeleeBalanceAttribute.Total))</code>
# If the attack is critical, the resulting attack is always the maximum attack value multiplied by the critical attack value (140% by default). This applies only to the character's attack, not to the weapon attack values. If the attack is not critical, the resulting attack value is a random value in between the minimal and maximum attack. <code>attack = EffectKind == Critical ? (int)(maxAttack * (1.0 + (MeleeCriticalAttackAttribute.Total / 1000.0))) : Random.Next(minAttack, maxAttack + 1)</code>
# Then attack power multiplier is applied to the resulting value. This can come from skills that say, for example, "200% Attack Power". <code>attack = (int)(attack * (1f + AttackPowerAttribute.Modifier)) + AttackPowerAttribute.Bonus</code>
# If the resulting value is lower than 1, it gets brought up to 1. <code>attack = Math.Max(attack, 1);</code>
# Then the weapon attack (which is random between the minimal and maximum weapon attack) is added to the resulting value. <code>attack = attack + Random.Next(minWeaponAttack, maxWeaponAttack + 1)</code>
# Finally, in case of an offensive skill attack, any attack modifiers based on the target type, and then on the target size, are applied if suitable. For example, if the attacker has +20% attack against the Fish type enemies and the target is Fish, the resulting attack will be multiplied by 20%. This is considered final skill attack value, for example: <code>attackModifier = 1.0f + (FishAttackAttribute.Total / 1000.0f)</code> <code>attack = (int)Math.Max(attack * attackModifier, 1)</code>

=== Damage reduction ===

After the final attack value is calculated, it can be reduced by the target's defenses:
# The defense value is first taken from the target's defense attribute that corresponds to the type of the attack: `MeleeDefense`/`RangedDefense`/`MagicResistance`
# Attacker's defense penetration then gets subtracted from the defense value, which gets taken from the attacker's `MeleeDefensePenetration`/`RangedDefensePenetration`/`MagicPenetration` attributes depending on the type of the attack. But the resulting value cannot go below 0. <code>var defense = Math.Max(target.MagicResistanceAttribute.Total - attacker.MagicPenetrationAttribute.Total, 0)</code>
# The damage is then calculated from the attack value multiplied by the value from the [[Combat_Calculation_Functions#line-127|DamageReductionFactorPerDefense]] and then [[Combat_Calculation_Functions#line-121|DamageReductionPerDefense]] gets subtracted as well: <code>var damage = (int)Math.Max((attack * DamageReductionFactorPerDefense(defense)) - DamageReductionPerDefense(defense), 1);</code>
# After that, any additional elemental, size, type defenses are getting applied as well, in the same order. These defenses don't have any flat damage reduction, they only have the factors, and are calculated using [[Combat_Calculation_Functions#line-133|DamageReductionFactorPerElementalDefense]] like this: <code>damage = (int)Math.Max(damage * DamageReductionFactorPerElementalDefense(elementalDefense), 1);</code>
# The resulting damage cannot be lower than 1.

Darkt:

'''Prontera''' is a capital city of the Rune-Midgarts Kingdom. The city is located on a southern part of the [[World Map|in-game world]]. Prontera has a lot of stores and shops, beautiful sculptures and statues, fountains and ponds.

The Royal Family castle, which is the residence of the Royal Family, is also located in Prontera. An enormously big building which has many floors, rooms and halls. Prontera also has a dangerous place called "culvert", entrance to it is located inside the castle. There is a strange door with a skull symbol, located at the end of the culvert dungeon.

2022-07-01T17:47:38Z

Darkt:

2022-07-01T16:32:38Z

Darkt:

'''Skills''' is one of the ways the players interact with the [[monsters]] and other players during PvE or [[PvP]] activities.

In Ymirheim every [[class]] has its own set of skills. Some skills can be shared, which means certain skills can be used outside their original class. There is a wide verity of skills in the game: offensive, defensive, buffs, debuffs. Skills usually consume resources called [[Attributes|mana]] and [[Attributes|rage]]. To learn and level up skills, the players have to use [[Skill Book|skill books]].

Skills have levels, which means the players can level up the skills. The skills have advanced levels, which usually illustrated as a star in the skill's description. The "star level" is only obtainable through special quests and cannot be obtained through learning the skill books.
{{SkillInfoBox|1000500211}}

== Shared Skill System ==
'''Shared Skill System''' is a system that allows the players to share certain skills from one class to another. Not all skills are sharable. To be able to share the skill, the players need to level up a certain class to a certain level. Shared skills take slots to be shared. Shared skills take different amount of slots. Not only not every skill can be shared, but also the players can't share all the sharable skills at the same time. Which means the players have to make decisions about which classes to level up and which skills to share.

[[File:Shared skills.png|frameless]]

== Weapon-related Skills ==
'''Certain skills require certain types of [[Weapon|weapons]] to be used'''. Which means, for example, if the player is playing as a [[Knight]] and has some shared skills transferred from a [[Recruit]], the player somehow should be able to use rifle related skills as a Knight. The Knight weapon is a sword, which cannot be used as a tool to use rifle-related skill. Which means the player must have a rifle to be able to use rifle-related skills.

The game has a special [[Controls|feature]] that allows the players to switch between weapon sets. That feature can be used to switch weapons, which should help to use skills that cannot be used without specific weapons.