Increase Damage to Shields by Multiplier

[UltimaOath]

  apply-settings:
    multipliers:
      shield-damage: 1.0   # 100% increase in damage to shields at maxLevel

This setting references:
https://hub.spigotmc.org/javadocs/spigot/org/bukkit/EntityEffect.html#SHIELD_BLOCK

When an entity hits a shield, the damage to the shield can be increased by a percentage.

Edit by @lokka30 tracking issue progress:

• Implemented entity data code in API
• Implement shield damage modifier in listener
  • Establish most of the implementation
  • Gain ability to modify shield damage linked via EntityDamageEvent (github.com/PaperMC/Paper/issues/8751)
  • Implement the small remaining part

[UltimaOath]

My suggestion is one where, if the damage is blocked by a shield, the damage that the shield would take from this event would increase proportionate to their shield-damage attribute. For example, if the config was set to 2.0 and assuming a max level entity, then when an entity attacked a player and the player successfully blocked the attack with their shield, when that shield receives damage from the event, we would multiply that damage 200%

[lokka30]

Bukkit API does not contain the code we require to implement this feature. See github.com/PaperMC/Paper/issues/8751.

[lokka30]

Apologies for bouncing around opening and closing these issues. I'll leave this open so I can close #424 and so this can be resolved once it is possible to do so (which may not happen in LM4.0, or ever).