Reference · Engine

Bosses - Innis

partialfrom#266

Innis (ccBoss02, boss02.cpp) is Mutation's first boss, fought in event 107 in field 2 of town 2 (EVENTAREAB0). It is a ccBoss (the base is Skeith's page) with its own Main, Think, Action and Affect, three images (ccBoss02Slave, each with a BreakMirror) and three missiles. The names and layouts are Infection's DWARF; the behaviour here is Mutation's code, checked frame by frame against the port.

Where it comes from

Event 107's block 17 (in_field town=2 field=2, in_point 3) runs entry type=7 code=1 and battle_ready. ccBossEntryStart(1) (MUT gcmn 0x00470c40) starts ccThBossEffect and bossFunc[1] = ccThBoss02 (0x004941f0) at priority 66. Block 20 waits on absent type=7 code=1, then sets eventStatus[0] to 2 and leaves the scene.

bossFunc (MUT 0x006192c0, 16 words) by code:

The constructor

ccBoss02::ccBoss02 (0x004942c0), on bossTbl row 1 (maxHP 30000, maxPP 15000):

• PatEndMode[0..3]: the indices of the first three 29s in Pattern (41, 102, 148).
• The place: Kite's plus (0, 1500, 20); Hipos its z; Kite's heading.
• ANM_ex21nut0, act 0; cheatHP on; drawn; the body hit on.
• DmgWait 500; DmgCount 0 (maxHP as ccChar::ccChar left it, before SetBaseParam); AFtiming 3; LockTargetFlg 2; EndFlg, PatEndFlg and PFlg 1; Alpha 1.0.
• The blur (bossBlur, the manager's +4): on, never ending, colour DefaultARGB 0x30808080 (ExARGB is 0x60808080).
• QuakeVector (5, 5, 5); InitBossCamera(200, 900).
• The wave's ccAnm (ANM_xx11wave of xeffect).
• Three ccBoss02Slave (bossTbl row 10, exited, not drawn).
• vecCenter: the arena's DMY_center01. On the command list.

A frame

ccBoss02::Main (0x00495d50) is ccBoss::Main with Think, Action and Move in that order. Then:

1. With lockPlayer, every member is held (affect 5, 32767) and a reserved menu forbid applies once no menu is open. Act 5 writes ccMenu.forbid itself the same frame, which that check reads.
2. anmStatus is the clip's _AnimateForward, and the transparency is Alpha.
3. Each image's ccBoss::Main runs, its Think the slave's.
4. condition.hold is cleared.

Move (0x00494cd0) is ccBoss::Move; the body, once pushed out, is held at Hipos.

Think and the patterns

Think (0x004964b0):

AFcou++; past AFtiming: 0
DmgCheckCount()
act 0 or 12, and not ExSpinBackFlg:
  EndFlg 0 and ActionStartFlg 1.0: ActionEnd
  EndFlg 1 and ActionStartFlg 0: ActionDecision
act 0 or 12:
  with a valid target, ActionStartFlg set, and not held (or spinning back,
  or Escape): SwitchActionPattern(MoveFlg)
  held: moveSpd 0
  no valid target: SetCameraEyes, target = RndTarget()
act 1, 2: ParticularCount (MoveFlg 15, 14, 5: Cou + 1; 4: Cou + 2)
act 11: EPITAPH_Flg 1, NowMode 3
act 3-8, 13, 14: nothing; any other act: ChangeAction(0)

ActionDecision (0x00496a50) picks the run by the protect gauge while not drained. PPcount 0 and PP at most 0.2 maxPP: mode 0 from word 0. PPcount 0 and PP at most 0.7 maxPP: mode 1 from PatEndMode[0] + 1. Otherwise mode 2 from PatEndMode[1] + 1. A mode change restarts its run. MoveFlg 0 takes the next word (Pattern, or EPITAPH_Pattern once drained); 7 sets Cou 20. LockTargetFlg 2 retargets every word, 0 retargets once and becomes 1, 1 or 3 keeps a valid target. Then Cou and SubNO 0, ActionStartFlg 1.0, targetPOS the target.

RndTarget (0x00499950) is SelectTarget(|ccRand() % 15|, 1e6), else the first living PC. SelectTarget's types 2-13 are the base's (boss.md); 14 never picks.

DmgCheckCount (0x00499d10): before the drain, once DmgCount - HP is at least a fifth of DmgWait (100), Innis spins away (MoveFlg 15, off the targets) from the waits (words 4-6), else ExSpinBackFlg 1. After the drain the same at DmgWait (500), to act 12.

SwitchActionPattern (0x00496fc0, jump table 0x006e0c20) first faces the camera (SetCameraEyes: the camera's heading plus pi, 256 a step) and, the first time, starts the four InisFieldGenerator rows 2, 3, 0, 1 at (0, 0, 200). Then the word:

Words 1-3, 7-11, 13, 17 and 19 take Innis off the command list for the action (EntryFlg); ResetData puts it back once the player is free. CheckRange (0x004997d0) is 2200 from vecCenter on each axis; a move past it ends in the escape.

The tables (MUT gcmn; identical on Infection):

Pattern 0x00619bd0 (150 words):
  6 3 25 2 11 200 7 16 26 5 1 16 3 25 27 20 0 26 13 25 27 20 0 26 1 16 8 5
  25 27 20 0 26 4 25 2 11 200 7 16 26 29 | 1 25 27 10 28 19 26 6 3 1 16 5 25
  10 17 26 6 1 16 6 25 2 11 200 7 16 26 4 25 27 20 0 26 1 25 27 10 28 19 26
  6 1 5 21 13 25 2 11 200 7 16 26 3 25 27 20 0 26 1 6 29 | 1 16 4 1 25 27 10
  28 19 26 6 1 5 25 27 20 0 26 16 3 1 16 21 3 1 25 27 10 28 19 26 6 25 2 11
  400 7 26 6 5 25 10 17 26 6 29 | 30
EPITAPH_Pattern 0x00619e30 (53 words):
  5 1 25 27 20 0 26 5 3 2 3 16 5 4 25 27 20 0 26 3 1 16 3 1 25 2 11 200 7 16
  26 3 25 27 20 0 26 2 4 5 9 25 2 11 200 7 16 26 1 4 13 16 29
Skill_VARIOUS_INIS 0x00619f08: 156 157 158 159 160 161 162
Skill_DOWNER_INIS  0x00619f20: 163 164 165 166 167 168 169 170 171 172 173 174
boss02AnmTbl 0x00619b90: 0 ex21nut0, 1 2 ex21dmg0, 3 4 ex21nut0, 7 ex21dmg0,
  12 ex2xnut0, 14 ex2xdea0 (the rest none)
Mon1-3 0x00619f40/80/c0: ANM_ex21mon1, mon2, mon3 at act 0 (the rest none)
@2702 0x0061a000: 191 193 191

The acts

AllAttack (0x0049aa10) drops Innis at 100 a frame to -4. There the wave starts, the quake is (15, 15, 15) and SkAtk is skill row 4. Each frame after holds every living member within its range, with the quake for 50 frames. Frame 3 brings a flash (30, 0x80ffffff) and a WaveShock; 30 a SamonRing (model 192) and BurstGenerator row 2; 40 skill 4 at Innis's place. Innis rises 2 a frame to Hipos. At the wave's end it is back on the targets and in act 0 (12).

The magic: MagicSquare and the missiles

MagicSquare (0x0049a000) at Cou 0 locks the player and sets the boss camera to mode 5 behind Innis. At 2 it draws |ccRand() % 3| (0 ice, 1 lightning, 2 fire), turns cinema 5 + n on, makes the MagicSquare n and begins the stage effect (0x64000000; 15, 15, 32277). At 50 it moves the eye. Ten frames after, it makes the three missiles, ends the stage effect (35) and goes to act 4.

Each missile (ccBossEff{Ice,Lightning,Blaze}Missile) flies a cubic Bezier (Spline, 0x00479420): Innis, two random points, the target 10 up. Their t steps are:

The first missile carries bossCam and MagicDamage (0x0049a7d0) as its callback. After impact it shakes the camera (10, 10, 10) each frame. MagicDamage(mode) at its first call is skill row mode (5 ice, 6 lightning, 7 fire) on the target. Its first 20 calls shake by QuakeVector. At the 60th it ends the cinema, goes to act 0, unlocks the player and sets the camera's mode 6.

SkillAttack

SkillAttack (0x00499110) at Cou 1 locks the player and turns cinema 70 on. It sets mode 5, the eye 800 from the target (toward Innis) and 50 up. The view is Innis's place 250 up with x and y zero: its x and y are the stack's leftover, SetCameraEyes' saved return address 0x00496fe4, which the FPU reads as a denormal (zero). It leaves the targets and takes the next word: 0 one of Skill_VARIOUS_INIS, 1 one of Skill_DOWNER_INIS (|ccRand() % n|), else skill 1. At 30, InisFieldGenerator row 4 above the target and SEs 225, 225, 257. At 60, ccItemSkillRequest. At 90 the cinema off, blur DefaultARGB, mode 6, the pitch 0, back on the targets. Each other frame raises the camera's pitch (+0xe0) by 0.01.

The images: act 5 and ccBoss02Slave

EnemyAttack (0x0049a900) draws one ccRand (dropped) when PP is at least half maxPP, turns cinema 8 on and goes to act 5. Act 5 (0x00495448):

1. Lock the player, forbid the menu, open menu 74 on stream 39 + MonsterID (39-41, mask 0).
2. Once the menu closes: mode 5, the eye 1500 behind the target and 350 up, looking at Innis.
3. Each image gets SetMonster(MonsterID), the target's place, and EntrySlave (the first exited one, ordered out).
4. When all three are done: unlock, mode 6, MonsterID + 1 (mod 3), act 0, cinema off.

An image (ccBoss02Slave::Think, 0x0049cce0), ordered out in act 0, takes Innis's place, faces the other way, is drawn and goes to act 7. SetStartPosition (0x0049c810) places each one from behind the camera:

In act 7 the count runs down (SE 61 at 1), then each frame it spins (SetLotate) and steps at the target (SetTan: 150, 100 within 100, climbing by atan2(posP.z, dist)). Within 70 of the target it bursts: it stops drawing, and EnemyBurst (0x0049d1b0) starts BurstGenerator rows 3 and 4 and makes two SamonRings. Their model is @2702[MonsterID], scale 1.5, spoint 0.5, tpoint 0.04. SEs 56 and 66 play, the quake runs 40 frames ((30, 34, 40), then (10, 8, 7) from 20), and skill row 8 lands at its place. Its mirror then breaks; once the shards are done it exits.

BreakMirror (0x16f0 bytes) throws 60 shards. SetData (0x005340e0): speed 80 + 10 x |ccRand() % 6|, spins ccRandF(0.4, 0.6, 0.5), 60 rand() drawn and dropped, launch 55 degrees, heading ccRandF(3.14). Mbreak (0x00534430) steps each shard with gravity 9.8, dt 0.6. Below 5 and falling it checks ccLandHitCheck(pos, 0x20000000): under the ground, its run takes 0.7 and its fall -0.8. A shard shows while its run is at least 20 and it is above -300; with none showing it is done. The shards' Z turn accumulates: Mbreak never resets its matrix between shards, so each is turned by all the turns before it. When done, MainMirror calls SetData again (another 300 ccRand and 60 rand()) and deletes the models.

Affect

ccBoss02::Affect (0x004960f0) is the base's gate and switch (boss.md): nothing but 21 while actForbid is 2 or the player is locked. 21 sets HP and maxHP to maxHP / 10 (3000), PP -1, PPcount 0. 13 is act 11. A hit (1, 3) of a spell (check_type_of 1) also calls effResistantShield(this, 1, -1). There is no Super table.

The cinema's names

_g_cinemaSkillName (MUT 0x00619320, 72 rows of 12 bytes: file, texture, row) names Innis's: rows 5-8 are x21's TEX_ini_skl rows 0-3, row 70 its row 4. Mutation's CinemaOn accepts n < 79 (Infection's 61).

In the port

piney_battle::boss::innis holds the rules. Boss.class is Class::Innis with the members above, and Boss::main sends it there. The tables come from the build (tables::combat: innis_pattern, innis_epitaph, innis_anims, innis_various_skills, innis_downer_skills, innis_monster_anims, innis_ring_models, cinema_skill_names) through BossData. The missiles' flights are rules (they call MagicDamage), run in the manager's pass. The camera's modes, eye and pitch are Out::CamMode, FreeCam and CamPitch, which piney_world::bosscam::BossCam applies. The blur's colour, the particles and the shield are Out::Blur, Particles and Shield.

In the field, FieldWorld::start_boss(code) reads the event's entry code. It loads x21's CMP_trall and clips, the images' CMP_ex21mon1-3 and the cinema's names, then makes Innis. Its images are actors while drawn. The area host answers present/absent 7 1 from the task's exit.

tools/test_battle_innis_rs.py (PINEY_VOLUME=mutation) builds Mutation's ccBoss02 with its own constructor in eemu. It runs Main with the manager's pass against battle_probe's innis request, frame by frame over random cases. A case scripts Kite's hits, the gauge and its break, the drain's 13 and 21, menus and the camera. It compares the acts, words and members, movement, target, HP and gauge, flags, animations, the images and their mirrors, the effects, the camera's mode, eye and pitch, the blur, the party's hold, the calls, the menu's words and both random generators. Its docstring lists what is not the game's.

Not described yet

• The pictures: the missiles, the SamonRings, the particle generators (InisField, Tornado, Burst), the blur, the shield and the mirrors' shards are not drawn. The MagicSquare draws only for n 0 (Skeith's).
• The Epitaph's body (ANM_ex2x* clips play on x21's CMP_trall; which clump the game draws them on is not checked).
• Mutation's CamMain lift (+0xdc) is always 0 in these rules and not ported. SetTransfer cases 3 and 4 and ZrotControlFlg are left out.
• Act 7 (the shake) on Innis itself: no harness case reached it, and what sends Innis there is not checked.