Orbital Bombardment

Entry Point

FUN_00556430 (78 lines)—called from system battle orchestrator (FUN_00514a60).

Flow

1. Check bombardment is allowed: vtable+0x38 must return true AND this[0x14] & 0x800 == 0
2. Get attacker side via FUN_00504dc0(param_2) → piVar5
3. Get defender side via FUN_00504dc0(param_3) → puVar6
4. Get fleet strength for each side via FUN_00555540
5. Extract IDs: FUN_004025b0 for attacker (uVar1) and defender (uVar2)
6. If same faction (uVar1 == uVar2): skip—no self-bombardment
7. Call FUN_00555d30 → FUN_00555b30 for bombardment calculation
8. Apply result: FUN_004f7390(system, base + damage, context)

Bombardment Formula

Full Call Chain

FUN_00556430 (bombardment handler)
  → FUN_00555d30 (setup)
    → FUN_00555b30 (calculation)
      → FUN_00509620 (get combat stats as short[2])
      → FUN_0055d8c0 (damage formula)
        → FUN_0055d860 (power ratio)
        → / DAT_006bb6e8 (GNPRTB divisor)
        → FUN_0053e190 (difficulty modifier)

FUN_0055d8c0—Damage Formula

int bombardment_damage(short* defender, short* attacker, int difficulty_param) {
    int raw_power = power_ratio(defender, attacker);  // FUN_0055d860
    if (raw_power == 0) return 0;
    int result = apply_modifier(raw_power / GNPRTB_DIVISOR, difficulty_param);
    return result == 0 ? 1 : result;  // minimum 1 damage
}

FUN_0055d860—Power Ratio (Euclidean Distance)

float power_ratio(short* defender, short* attacker) {
    int dx = attacker[0] - defender[0];
    int dy = attacker[1] - defender[1];
    return sqrt(dx*dx + dy*dy);  // FUN_0053e1d0
}

The short[2] stats from FUN_00509620 are likely: - [0] = bombardment attack strength (attacker) / bombardment defense (defender) - [1] = secondary stat (possibly detection or maneuverability modifier)

Global Constants

Address	Purpose	Notes
DAT_006bb6e8	GNPRTB bombardment divisor	Scales raw power to damage
DAT_00661a88	Difficulty modifier table	Used by FUN_0053e190

Bombardment Disabled Flag

this[0x14] & 0x800—when set, bombardment is blocked (system already under bombardment or protected).

Decompiled Files

• FUN_00556430_bombardment.c—main bombardment handler (78 lines)
• FUN_00555d30.c—bombardment setup (calls FUN_00555b30)
• FUN_00555b30.c—bombardment calculation orchestrator
• FUN_0055d8c0.c—damage formula (Euclidean distance / GNPRTB)
• FUN_0055d860.c—power ratio (sqrt of stat deltas)
• FUN_0053e190.c—difficulty modifier application
• FUN_0053e1d0.c—sqrt function
• FUN_0053e170.c—modifier helper
• FUN_00509620_combat_stats.c—combat stat extractor
• FUN_00555540.c—fleet strength getter