Combat System

Fully deterministic combat with no RNG. Initiative, damage formulas, counter tags, and battle reports.

Inputs

  • Fleet A — list of ship stacks with their blueprint loaded
  • Fleet B — list of ship stacks with their blueprint loaded

Initiative

fleet_speed = weighted_average(ship_speed across all ships)

The fleet with higher speed attacks first each round.

Round Loop

while both fleets have ships alive:
    attacker selects targets
    damage applied
    defender retaliates
    repeat

Damage Formula

Per attacking ship:

effective_damage =
  base_damage ×
  targeting_modifier ×
  counter_modifier

Damage is applied in order:

1. shield_absorb  → reduces incoming by shield value
2. armor_absorb   → reduces remaining by armor value
3. hull_damage    → remainder applied to hull

A ship is destroyed when hull ≤ 0.

Counter Tags

Weapon modules carry counter tags that interact with defense module tags:

Weapon TagBonus AgainstModifier
armor_piercingArmored targets1.25×
shield_breakerShield-heavy targets1.25×
anti_missileMissile weaponsIntercept

Defense modules can carry resistance tags:

Defense TagResists
piercing_resistancearmor_piercing weapons
breaker_resistanceshield_breaker weapons

When a weapon tag matches a defense weakness:

counter_modifier = 1.25

Otherwise:

counter_modifier = 1.0

Combat Log

Every event in every round is stored:

CombatEvent {
  attacker_blueprint
  defender_blueprint
  damage_done
  ships_destroyed
}

A human-readable battle report is generated from the log after combat completes.

Determinism Verification

hash = sha256(fleetA_state + fleetB_state + engine_version)

This hash can be used to verify that combat results were not tampered with. The same inputs always produce the same hash and the same outcome.

Fleet System
Fleet model, movement, missions, and the ship production queue.
Trade Routes
Automated intra-empire logistics and player-to-player trade contracts.