khallaandClaude Opus 5.5
91e7f844cc
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
79 lines
4.3 KiB
Markdown
79 lines
4.3 KiB
Markdown
# Dwarf arts: Kanonenschuss and Mörsergranate
|
||
|
||
## Requests (2026-10-25 / 2026-10-26)
|
||
|
||
- Kanonenschuss (art 0x43f, `gui_spells_kanone`): "remove the knockback,
|
||
instead it can be just a stun" (chosen: no push, only a stun); the range
|
||
increased for the wider view; the stun particles not on targets that
|
||
avoided the stun. The game's stun resistance stays (2026-10-26: "we dont
|
||
ignore anything, the skill is fine for now").
|
||
- Mörsergranate (art 0x43e, `gui_spells_moerser`): "the radius of the
|
||
explosion should increase every 5 skill levels".
|
||
|
||
## Measured
|
||
|
||
- The cannon's code is the combat move function `0x5145d0`, case 0x43f. Its
|
||
ray: `cmp edi,19h` at `0x517389`, 25 steps of 40 = 1000 range. Hostile
|
||
targets get `cEvent_creature` 5 from `0x51768d`.
|
||
- Stun chance `0x4fc810(level, creature)` = level × 5 / creature level × 100
|
||
(`UI_STAT_STUNNCHANCE`). On a successful roll: `0x5936e0(MOTION_HIT_A 0xaf,
|
||
3.0, 0.25)` at `0x517709` (pushes from `0x5176f8`), then the stun order
|
||
`cEvent_creature` 3 with +0x14 = 100, sent by `call [eax+18h]` at
|
||
`0x5177aa` (returns to `0x5177ad`).
|
||
- The stun *is* the knockback. `cCreature::ReceiveOrder` `0x52e400` case 3:
|
||
first the resistance `vf24(0x50)` (`0x55d0a0`: flag +0x4f0 & 0x1000 resists
|
||
2 in 3, effect 0x35d a percentage); otherwise push left +0x24d = 100, flag
|
||
+0x200 |= 0x20000, attacker +0x259, ResetToIdle. `cCreature::Update` branch
|
||
`0x594c82` moves a creature with that flag away from the attacker and lowers
|
||
the push left by each step (`0x594deb`), measured about 100 units in 0.3 s;
|
||
at 0 the flag is cleared.
|
||
- The impact effect `TYPE_FX_DWARF_SHOOT_IMPACT` (0x47f) is created on every
|
||
hit target by `CreateAt` at `0x517855` (target in ebx), resisted or not.
|
||
- Mörsergranate: the grenade (type 0x3fa) lands and creates
|
||
`TYPE_FX_GRENADEIMPACT` (0x3fc), which gathers its targets with
|
||
`cObjectManager 0x5ff820` (called from `0x5ab400` at `0x5ab63d`): a creature
|
||
is hit when its distance is below the impact's size (150, type table
|
||
`0x428bb0`) plus its own type's size.
|
||
|
||
## The mod (`src/mods/dwarfarts.cpp`)
|
||
|
||
- The HIT_A motion is jumped over (`0x5176f8`: `jmp` past the call).
|
||
- The push step at `0x594deb` calls `PushStepThunk`: creatures the cannon
|
||
stunned (order 3 from `0x5177ad`, kept with an end time) move by 0 and keep
|
||
their push left above 0 for 1.5 s, so they stand still, then carry on.
|
||
- The impact effect is created only on targets in the stun state.
|
||
- The ray gets 45 steps (1800); confirmed to reach across the widened view.
|
||
- The impact's gather call gets a radius of size × (1 + 0.1 × (level / 5)),
|
||
with the owner's Mörsergranate level (`game::ArtLevel`). The growth 0.1 per
|
||
step is our choice; not yet seen in the game (Borf's level is 2).
|
||
|
||
## Mörsergranate impact marker (asked 2026-10-25, done 2026-10-26)
|
||
|
||
"Show exactly where the grenade will land and its explosion radius, a red
|
||
circle with low alpha on the ground."
|
||
|
||
Measured:
|
||
- The landing point is decided at launch (`0x5145d0` case 0x43e): the
|
||
target's position, or, closer than 200, a point 200 from the dwarf with a
|
||
+-15 jitter. It goes to the new grenade (type 0x3fa) in cEventFX 0x96,
|
||
constructed at `0x5169fa` (`cEventFX::Construct` 0x41e0a0, thiscall, ret
|
||
0x44: code, owner id, target id, position area / x / y / level, ...).
|
||
- The impact gathers its targets at exactly that point, on several frames.
|
||
The grenade object stays about 30 s after the explosion.
|
||
- Ground -> screen: `0x622700` (world units -> world pixels, the isometric
|
||
plane), then (pixel - camera +0x14/+0x18) / zoom +0xb60 + screen centre
|
||
(floating texts 0x41e546). Checked with the hero: the screen centre.
|
||
- The world view draws the ground (`0x62d530`, ground quad list), then the
|
||
objects.
|
||
|
||
Mod: the construct call notes grenade, owner, landing point and radius
|
||
(`ImpactRadius`, shared with the hit check); after `0x62d530` a disc (alpha
|
||
0x40) with a 2 px rim (alpha 0xa0) is drawn there, without depth test, until
|
||
the impact of that owner's grenade at that point gathers its targets.
|
||
|
||
Tooltip (2026-10-26, "the skills tooltip does not show the current radius"):
|
||
a game::Art tooltip filter adds "Explosionsradius: N" after the last value
|
||
line of each level section (current level, and the next level's in the skill
|
||
book), in that line's colour, from the same `ImpactRadiusAt(level)` as the
|
||
hit check and the marker.
|