Skirmish — state and globals#

Summary#

Skirmish mode is a parallel game state layered on the campaign engine. The primary discriminator is DAT_0057a0f0 (proposed lotr2_skirmish_active). Secondary flags select wizard routing, battle type, and MP behavior.

Confidence: likely for state machine; globals confirmed at listed VAs (GoG export).

State machine#

stateDiagram-v2
  [*] --> Gateway: intro complete
  Gateway --> SetupSP: step 0xc DAT_00553030=0
  Gateway --> SetupMP: step 0xb DAT_00553030=1
  SetupSP --> BattleReady: FUN_004329ec
  SetupMP --> BattleReady: all ready FUN_004329ec
  BattleReady --> InBattle: combat screen DAT_0057a0f0=1
  InBattle --> ScoreInterim: battle end screen 0x2e
  ScoreInterim --> Score1: screen .
  Score1 --> Score2: screen /
  Score2 --> SetupSP: rematch FUN_0042b780
  Score2 --> GatewayShell: DAT_0053f0c4 in 10,11 screen 0x1c
  GatewayShell --> Gateway: FUN_004329ec map rot
  Gateway --> [*]: map_index ge 8

Core globals#

Proposed name	GoG global	Type	Role
`lotr2_skirmish_active`	`DAT_0057a0f0`	int	1 = skirmish session (not campaign map)
`lotr2_skirmish_game_type`	`DAT_0057cb38`	int	1 = SIGS GameType Skirmish
`lotr2_skirmish_battle_type`	`DAT_0053e91c`	int	0/1 field, 2 siege, 3 custom
`lotr2_skirmish_scenario_index`	`DAT_0056d590`	int	Selected scenario 0..n-1
`lotr2_skirmish_scenario_scroll`	`DAT_0053f64c`	int	List scroll offset
`lotr2_skirmish_scenario_count`	`DAT_0053f0d4`	int	10 / 10 / 15 / 20 by type
`lotr2_skirmish_map_index`	`DAT_0053f258`	int	Map table slot 0–7 (+wrap)
`lotr2_skirmish_custom_map`	`DAT_0056899c`	int	Custom map UI + skircust.pl8
`lotr2_skirmish_attacker_slot`	`DAT_0053ef5c`	int	Player slot of attacker
`lotr2_skirmish_post_battle_tag`	`DAT_0053f0c4`	int	0 / 10 / 11 gateway return
`lotr2_skirmish_siege_active`	`DAT_0053e8fc`	int	1 during siege type
`lotr2_skirmish_army_tier_left`	`DAT_00553da4`	byte	Army size tier 1–3
`lotr2_skirmish_army_tier_right`	`DAT_00553dd0`	byte	Opponent tier 1–3

Wizard / session globals#

Global	Role
`DAT_005530f0`	Wizard step (0xb / 0xc skirmish)
`DAT_0055302c`	Game kind: 3 = skirmish branch
`DAT_00553030`	0 SP, 1 MP
`DAT_00553248`	SIGS MP connected
`DAT_00568464`	SIGS initialized
`DAT_005533e0[slot]`	MP ready per player
`DAT_0056d5cc`	Opponent player slot
`DAT_00553114`	Selected menu row
`DAT_0053f648`	Confirmed menu row
`DAT_0057d320`	Quick-load flag (bypass skirmish when 1)

Screen modes (skirmish-relevant)#

Char	Hex	Name
`' '`	0x00	Game shell / map (unused in skirmish)
`'+'`	0x29	In battle
`'.'`	0x2e	Score page 1
`'/'`	0x2f	Score page 2
`'\\x1c'`	0x1c	Gateway return
`'\\x1f'`	0x1f	Wizard

Interim post-battle: 0x2e (46 decimal) before '.'.

Army / battle globals#

Global	Role
`DAT_00568210`	Attacker army record index
`DAT_00568218`	Defender army record index
`DAT_00553efc`	Attacker player index for UI
`DAT_00553f34`	Defender player index for UI
`DAT_00516ac0`	Parsed unit count cube from TROOPS*.ENG
`DAT_0053f640`	Custom map table selector (0=preset, 1=custom rows)
`DAT_0057c910`	Active siege map id
`lotr2_game_active_view`	2 = battle view

Transitions that clear skirmish#

DAT_0057a0f0 = 0 when:

Wizard cancel to main menu (FUN_00433155 turn_phase 1)
Campaign load path in lotr2_game_sim_tick (non-skirmish init)
Explicit teardown in gateway handlers

Rename status#

Globals remain DAT_* in src/Lords2-gog.exe.c. Proposed names above should be applied in a future Ghidra rename pass; until then cite both in evidence docs.

Evidence#

See evidence.md for function cross-reference.