khallaandClaude Opus 5.5
198bbab6f9
Eingraben becomes ground-targeted; after its own case the dwarf moves to the end of Phasenverschiebung's walk towards the point (stops before walls and cliffs). The barrier's bonus lasts 3 s and its lock in place (effect kind 0x3a) is dropped. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
127 lines
7.1 KiB
Markdown
127 lines
7.1 KiB
Markdown
# Dwarf arts: Kanonenschuss, Mörsergranate, Eingraben
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## Requests (2026-10-25 / 2026-10-26)
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- Kanonenschuss (art 0x43f, `gui_spells_kanone`): "remove the knockback,
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instead it can be just a stun" (chosen: no push, only a stun); the range
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increased for the wider view; the stun particles not on targets that
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avoided the stun. The game's stun resistance stays (2026-10-26: "we dont
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ignore anything, the skill is fine for now").
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- Mörsergranate (art 0x43e, `gui_spells_moerser`): "the radius of the
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explosion should increase every 5 skill levels".
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## Measured
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- The cannon's code is the combat move function `0x5145d0`, case 0x43f. Its
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ray: `cmp edi,19h` at `0x517389`, 25 steps of 40 = 1000 range. Hostile
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targets get `cEvent_creature` 5 from `0x51768d`.
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- Stun chance `0x4fc810(level, creature)` = level × 5 / creature level × 100
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(`UI_STAT_STUNNCHANCE`). On a successful roll: `0x5936e0(MOTION_HIT_A 0xaf,
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3.0, 0.25)` at `0x517709` (pushes from `0x5176f8`), then the stun order
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`cEvent_creature` 3 with +0x14 = 100, sent by `call [eax+18h]` at
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`0x5177aa` (returns to `0x5177ad`).
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- The stun *is* the knockback. `cCreature::ReceiveOrder` `0x52e400` case 3:
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first the resistance `vf24(0x50)` (`0x55d0a0`: flag +0x4f0 & 0x1000 resists
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2 in 3, effect 0x35d a percentage); otherwise push left +0x24d = 100, flag
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+0x200 |= 0x20000, attacker +0x259, ResetToIdle. `cCreature::Update` branch
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`0x594c82` moves a creature with that flag away from the attacker and lowers
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the push left by each step (`0x594deb`), measured about 100 units in 0.3 s;
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at 0 the flag is cleared.
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- The impact effect `TYPE_FX_DWARF_SHOOT_IMPACT` (0x47f) is created on every
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hit target by `CreateAt` at `0x517855` (target in ebx), resisted or not.
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- Mörsergranate: the grenade (type 0x3fa) lands and creates
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`TYPE_FX_GRENADEIMPACT` (0x3fc), which gathers its targets with
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`cObjectManager 0x5ff820` (called from `0x5ab400` at `0x5ab63d`): a creature
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is hit when its distance is below the impact's size (150, type table
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`0x428bb0`) plus its own type's size.
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## The mod (`src/mods/dwarfarts.cpp`)
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- The HIT_A motion is jumped over (`0x5176f8`: `jmp` past the call).
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- The push step at `0x594deb` calls `PushStepThunk`: creatures the cannon
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stunned (order 3 from `0x5177ad`, kept with an end time) move by 0 and keep
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their push left above 0 for 1.5 s, so they stand still, then carry on.
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- The impact effect is created only on targets in the stun state.
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- The ray gets 45 steps (1800); confirmed to reach across the widened view.
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- The impact's gather call gets a radius of size × (1 + 0.1 × (level / 5)),
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with the owner's Mörsergranate level (`game::ArtLevel`). The growth 0.1 per
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step is our choice; not yet seen in the game (Borf's level is 2).
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## Mörsergranate impact marker (asked 2026-10-25, done 2026-10-26)
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"Show exactly where the grenade will land and its explosion radius, a red
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circle with low alpha on the ground."
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Measured:
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- The landing point is decided at launch (`0x5145d0` case 0x43e): the
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target's position, or, closer than 200, a point 200 from the dwarf with a
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+-15 jitter. It goes to the new grenade (type 0x3fa) in cEventFX 0x96,
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constructed at `0x5169fa` (`cEventFX::Construct` 0x41e0a0, thiscall, ret
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0x44: code, owner id, target id, position area / x / y / level, ...).
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- The impact gathers its targets at exactly that point, on several frames.
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The grenade object stays about 30 s after the explosion.
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- Ground -> screen: `0x622700` (world units -> world pixels, the isometric
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plane), then (pixel - camera +0x14/+0x18) / zoom +0xb60 + screen centre
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(floating texts 0x41e546). Checked with the hero: the screen centre.
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- The world view draws the ground (`0x62d530`, ground quad list), then the
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objects.
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Mod: the construct call notes grenade, owner, landing point and radius
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(`ImpactRadius`, shared with the hit check); after `0x62d530` a disc (alpha
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0x40) with a 2 px rim (alpha 0xa0) is drawn there, without depth test, until
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the impact of that owner's grenade at that point gathers its targets.
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Tooltip (2026-10-26, "the skills tooltip does not show the current radius"):
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a game::Art tooltip filter adds "Explosionsradius: N" after the last value
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line of each level section (current level, and the next level's in the skill
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book), in that line's colour, from the same `ImpactRadiusAt(level)` as the
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hit check and the marker.
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## Grenade impact crash (2026-10-26)
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Crashes at sacred.exe+0x361b54 (2026-10-26 00:12 and 22:39) in the particle
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drawer `0x7613e0`, called by `cParticleSystem_grenadeimpact::Render` (vf04
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0x7b66b0): colour = table +0x20d0 at row (+0x3d) * 256 + life (+0x2c), and a
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particle had a life of over 500000. Guard (`mods/guards.cpp`): live particles
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with life >= 256 or row >= 3 are switched off before drawing. Logged in the
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next session: 5 particles, all row 3, life 255, garbage sizes (e.g. 190555,
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4.6e-40): the explosion emits into a fourth row whose emitter parameters it
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never sets (vf10 0x7b6980 fills three rows at +0x30d0). No crash since.
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## Eingraben: the dwarf's escape (request 2026-10-28)
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"I want it to be the Dwarfs option to Teleport/Escape. The Skill will cast a
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protective barrier around the Dwarf (current visual effect), clear him of all
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movement impending effects and then teleport to the position marked by the
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cursor (if possible). The Teleport is visually shown by the dwarf going
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underground and coming out again at target position." Range: the visible
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area; the barrier is the skill's current defensive bonus for 3 s; digging in
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and out 1 s each; "he should be able to see the target location", compared
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to the battlemage's Phasenverschiebung; the original lock in place goes.
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Found in the code:
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- Spells run in `cCreature::CastSpell` (0x5222c0, thiscall (cast), ret 4;
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cast +0x08 / +0x0c the ground point, +0x20 the spell id). Eingraben is
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spell 0x39 (`gui_moves_eingraben`, launch type 5 around the caster).
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- Case 0x39 creates object type 0x480 at the caster with cEventFX 0x9d (owner
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and target the caster) and plays sound 0x840: the barrier, which follows
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the dwarf.
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- Case 1 (Phasenverschiebung, launch type 3) walks from the caster towards the
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target in steps of 10 while the cell is passable (`cWorld::IsPassable`
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0x636b60) and keeps the last point a creature can stand on
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(`cWorld::CanStand` 0x636eb0); a wall or cliff in the way ends the walk.
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Logged (2026-10-28): the barrier adds, all with art 0x39, kind 0x3a value 0
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from its particles (0x7b9602), the lock in place (the dwarf was stuck 2-3 s),
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and kind 2 value 0.5 plus kinds 7..0xa value 30 from its update (0x5b5862..),
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the defensive bonus (resistances up while it lasts).
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Mod (`mods/dwarfarts.cpp`): Eingraben's definition +0x3c becomes 3 (a point);
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after the original case the dwarf is teleported to the end of
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Phasenverschiebung's walk towards the point (the cursor keeps it within the
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visible area). The effect hook (`aurarecast.cpp`, `KeepEffect`) drops kind
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0x3a for art 0x39 and cuts the art's other effects to 3 s. Confirmed
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2026-10-28: aimed, stops before walls and cliffs, casts at once at the screen
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edge, the barrier moves with him, no lock, bonus for 3 s. Open: clearing
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slows and stuns, 1 s digging in and out.
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