EP/GP point system support

[avandenberghe]

Summary

Support the Effort Points / Gear Points (EP/GP) system as a DKP pool variant.

How EP/GP works

• EP (Effort Points): Earned through raid attendance (like standard DKP earned)
• GP (Gear Points): Accumulated when receiving loot (items have a GP cost based on item level/slot)
• PR (Priority Ratio): EP / GP — higher ratio = higher loot priority
• Minimum GP floor to prevent division by zero (configurable, e.g. GP = max(actual_GP, base_GP))

Implementation with transaction ledger

The transaction ledger (#3) naturally supports EP/GP:

• Raid attendance → account = 'earned' (these are EP)
• Item received → account = 'spent' (these are GP)
• PR = SUM(earned) / MAX(ABS(SUM(spent)), base_gp)

Pool configuration

Add to bb_dkp_pools:

• pool_type: dkp (default) or epgp
• base_gp: Minimum GP floor (default 1)

Display

• Standings show EP, GP, PR columns instead of earned/spent/net
• Loot decisions sorted by PR descending

GP calculation

GP per item can be:

• Manual entry (admin sets GP cost)
• Formula-based: GP = base_cost * slot_modifier * ilvl_modifier (WoW-specific, via game plugin)

Reference

• Archived language keys: EP, EPLONG, GP, GPLONG, PR, PRLONG, EPNET, GPNET in bbguild/contrib/archive/language/*/dkp_common.php
• WoW addon reference: https://github.com/EQdkpPlus/game-wow