Preserve enemy facing through push and pull slides (#418, #427)

docs/SIM.md

@@ -907,8 +907,8 @@ instance) and skip `'counter'` / `'reflect'` damage. When the guard trips, the l
 | `moveRedeploy(unit, r, c, { clearSp })` | a 【移动】 (PRTS 术语释义: "不退场，以当前血量在目标位置部署", a special retreat + redeploy): `relocate`'s checks (false = refused, nothing changed), then a new deployment (`deploySeq` / `aggroSeq` / `deployedAt`) and `deploy {initial:false, move:true}` (deploy effects fire again); no `die` / `death`, timer or cost (不屈 / 阿戈尔's revive never see it); HP, buffs and a running skill are kept (owner's deviation, DESIGN §22.3); `clearSp` empties the SP before the deploy handlers run — 乌尔比安 S3's move (kits/ops/chess_char_5_05-ulpia.js) and 【返回】 (`clearSp`; also the 从不混淆的方向 fallback, content/tokens.js) |
 | `redeploy(unit, { free=true, tile, keepSp })` | immediate (re)deployment of a dead/retreated ally (full HP, `deploy {initial:false}`); `free: false` pays `base.cost` DP (refused without it); without `tile` it lands on the unit's rest tile (`restTile`: where a knocked-out operator lies, else home); `tile: [r, c]` lands on that tile once (home unchanged; refused when off-rect, occupied or a knocked-out operator's tile, no fallback); `keepSp` keeps SP/charges (保留技力), restored before `deploy` fires — but not for a skill that costs no SP, which the reset re-arms as at every deployment (伊内丝 S3 casts again on a 突袭 landing) — 突袭 raids, 阿戈尔 / 不屈 revives where the unit lies |
 | `refreshRange(unit)`, `setExtraRange(unit, keys)`, `rangeChanged(unit)` | rebuild the ranges after changing `unit.rangeGrid` (流形 copies); extra targetable tiles (absolute keys; merged into every later rebuild until set again; `null` clears; never in `baseRangeKeys`): 蕾缪安 wanted, 维娜 S3 |
-| `push(enemy, force, {from, dir, fixed, fixedAngle, inward, effect})`, `pull(enemy, force, {to, center, stop})`, `pullToFront(enemy, unit, force)`, `forceLevel(enemy, force)`, `pushDistance(enemy, force, {effect})` | the official 位移 (PRTS 游戏数据基础 §重量公式 / 推与拉; user playtest #6 item 14): 受力等级 = 力度 (微小力 −1, 小力 0, 中力 1, 较大力 2, 大力 3 …) − current 重量等级 (massLevel, 失重 counts). Push distance per level (`constants.js PUSH_TILES`, PRTS 推与拉's 弹道 column): ≤ −3 → 0, −2 → 0.12, −1 → 0.44, 0 → 1.7, 1 → 2.14, 2 → 2.96, ≥ 3 → 3.53 tiles; `effect` = a 特效 push (`PUSH_TILES_EFFECT`: −2 → 0.085, −1 → 0.374, 0 → 1.562, 1 → 1.987, 2 → 2.773, ≥ 3 → 3.331 — 见行者 S1 / S2, `PUSH_EFFECT_SKILLS`; every other pusher uses the 弹道 column [ASSUMED]); radial (away from `from`; the client's buff template `knockback[relative]`: 莫斯提马 S3, 山 S3, 琳琅诗怀雅 S3 — also PRTS 备注 "推开效果为径向推动") unless `dir` (directional; template `knockback[dir]` = Knockback {`_useSourceDirection` true, `_decreaseForceLevelWhenNotInDirection` 2}: 推击手, 野鬃 S2 "往攻击方向" (charpack char_496_wildmn: buff `wildmn_s_2[force]`) — > 45° off or < 0.25 tile ⇒ radial and level −2; `fixed` waives both (圣聆初雪 S1 朝部署方向, `KnockBackWithCharacterDirection`), `fixedAngle` only the angle (见行者 S2)); `inward` = a push towards `from` (薄绿 S2), stopping at the 急停 radius. Pull: level ≥ 0 → to `to` / the 急停 radius around `center`, −1 → 35 % of the way, −2 → 0.03, ≤ −3 → 0; `pullToFront` aims at the 拉力起点 0.5 tile ahead of the unit with the 急停 radius 0.6708 around it (never moves an enemy the unit itself blocks — nor does a pull towards an ally's centre, e.g. the 流形 S3 pulse) A 静态刚体 (data `staticBody`: every air unit of the mode except “炎佑”, plus 昆图斯 — PRTS 特殊机制 "可以进入失衡状态…但物理层面上无法产生任何速度或移动", "与单位的行动方式无关") moves 0 from every source while the skills that reach it still hit it (薄绿 S2, 锏 S3, the 钩索师 …; player report after 0.1.0). **失衡 (UNBALANCE)** (PR #392's idea, its timing re-done from the sources): the move stays instant, then the enemy is held in the 失衡 state — a state machine, not a status (PRTS 失衡位移机制; 异常效果 「失衡…不属于异常效果」: no stun, no immunity, SP untouched), `enemy.unbalanceUntil`, read by `ai.js updateEnemy`: no walking (恐惧 / 诱导 included — no fear exemption) and no normal attack started, a swing short of its frame cut, the attack clip's stand ended; and no skill (失衡免疫 「失衡期间无法自主移动、发动攻击、使用技能」): content skills wait (`enemies/helpers.js canCast(e, sil, battle)`, `unbalancedNow`), so do blinks (`blinkForward`) and scripted moves (枯朽之种's dive, the 碎铳之簧 / 铳 charges), and 乌顶巨角卢鲁's clash waits for its end. Left running on purpose: checks the state does not stop (异常效果: 水遁忍者's damage — 「仍然能正常造成伤害」), passive auras and terrain / periodic effects (no skills), death / damage-taken triggers, skill cooldowns (only the cast waits) — and 弧光锋卫's bleed, which is the state's own (天赋 「处于失衡状态时，每0.066s受到400点无来源真实持续伤害」: every 0.066 s for as long as it lasts — until 0.2.2 one hit per tile moved [ASSUMED]). Length, game seconds: a push — the 位移时间 of its 受力等级, PRTS 游戏数据基础 推力-位移近似对应表 (`constants.js PUSH_UNBALANCE`: −2 → 0.2, −1 → 0.4, 0 → 0.8, 1 → 0.9, 2 → 32/30, ≥ 3 → 35/30), the level push() computes (the −2 correction included), kept when the 特效 column or a wall shortens the slide ([ASSUMED] for the wall; a wall at the first step → the 0.1 s floor [ASSUMED]); a pull — its force window, 推与拉 「作用时间默认为 1 s；若本次受力等级 < −1，作用时间改为 0.5 s」 (`PULL_UNBALANCE` / `_WEAK`), to its end after the 急停 too (「目标将仍保持失衡状态至拉力作用时间结束为止」), none at ≤ −3; a 静态刚体 hit by a force > 0 — no movement, the state while the force acts (特殊机制 静态刚体: 「在失去施力后立刻」 out, 「0.1 秒保底」): a push 0.1 s (`UNBALANCE_MIN`; a push's force is instant), a pull its window; 失衡免疫 and leaders never. 浮空 ends it (术语释义 浮空), so do a 重生 (重生 / 逐火's 余烬) and a route APPEAR relocation — forced state switches (失衡位移机制). The end compares with 1e-9 so a float-summed 35/30 s keeps its 35 frames. The `displace` fx carries the length (`dur`): the client's slide takes as long (render/units.js slideTo). PR #392's 0.6387·√tiles (from the page's μ = 0.5 单位假设) and iLine truncated
-| `displace(enemy, {x, y}, tiles, {dur})` | the raw mover behind push / pull: along passable tiles (by `motion`: FLY in the rect, else ground-passable), no weight rule, no 失衡 state of its own (push / pull add it; `dur` only rides on its `displace` fx); nothing for 失衡免疫 (`noDisplace`: 近地悬浮 incl. 喷气人's 飞行模式, 浮空, the 胄 parts, 守墓石像's statue and flight), 静态刚体 (`def.staticBody`) and leaders (`_displaceable`); unblocks + re-paths |
+| `push(enemy, force, {from, dir, fixed, fixedAngle, inward, effect, keepFacing})`, `pull(enemy, force, {to, center, stop, keepFacing})`, `pullToFront(enemy, unit, force)`, `forceLevel(enemy, force)`, `pushDistance(enemy, force, {effect})` | the official 位移 (PRTS 游戏数据基础 §重量公式 / 推与拉; user playtest #6 item 14): 受力等级 = 力度 (微小力 −1, 小力 0, 中力 1, 较大力 2, 大力 3 …) − current 重量等级 (massLevel, 失重 counts). Push distance per level (`constants.js PUSH_TILES`, PRTS 推与拉's 弹道 column): ≤ −3 → 0, −2 → 0.12, −1 → 0.44, 0 → 1.7, 1 → 2.14, 2 → 2.96, ≥ 3 → 3.53 tiles; `effect` = a 特效 push (`PUSH_TILES_EFFECT`: −2 → 0.085, −1 → 0.374, 0 → 1.562, 1 → 1.987, 2 → 2.773, ≥ 3 → 3.331 — 见行者 S1 / S2, `PUSH_EFFECT_SKILLS`; every other pusher uses the 弹道 column [ASSUMED]); radial (away from `from`; the client's buff template `knockback[relative]`: 莫斯提马 S3, 山 S3, 琳琅诗怀雅 S3 — also PRTS 备注 "推开效果为径向推动") unless `dir` (directional; template `knockback[dir]` = Knockback {`_useSourceDirection` true, `_decreaseForceLevelWhenNotInDirection` 2}: 推击手, 野鬃 S2 "往攻击方向" (charpack char_496_wildmn: buff `wildmn_s_2[force]`) — > 45° off or < 0.25 tile ⇒ radial and level −2; `fixed` waives both (圣聆初雪 S1 朝部署方向, `KnockBackWithCharacterDirection`), `fixedAngle` only the angle (见行者 S2)); `inward` = a push towards `from` (薄绿 S2), stopping at the 急停 radius. Pull: level ≥ 0 → to `to` / the 急停 radius around `center`, −1 → 35 % of the way, −2 → 0.03, ≤ −3 → 0; `pullToFront` aims at the 拉力起点 0.5 tile ahead of the unit with the 急停 radius 0.6708 around it (never moves an enemy the unit itself blocks — nor does a pull towards an ally's centre, e.g. the 流形 S3 pulse) A 静态刚体 (data `staticBody`: every air unit of the mode except “炎佑”, plus 昆图斯 — PRTS 特殊机制 "可以进入失衡状态…但物理层面上无法产生任何速度或移动", "与单位的行动方式无关") moves 0 from every source while the skills that reach it still hit it (薄绿 S2, 锏 S3, the 钩索师 …; player report after 0.1.0). **失衡 (UNBALANCE)** (PR #392's idea, its timing re-done from the sources): the move stays instant, then the enemy is held in the 失衡 state — a state machine, not a status (PRTS 失衡位移机制; 异常效果 「失衡…不属于异常效果」: no stun, no immunity, SP untouched), `enemy.unbalanceUntil`, read by `ai.js updateEnemy`: no walking (恐惧 / 诱导 included — no fear exemption) and no normal attack started, a swing short of its frame cut, the attack clip's stand ended; and no skill (失衡免疫 「失衡期间无法自主移动、发动攻击、使用技能」): content skills wait (`enemies/helpers.js canCast(e, sil, battle)`, `unbalancedNow`), so do blinks (`blinkForward`) and scripted moves (枯朽之种's dive, the 碎铳之簧 / 铳 charges), and 乌顶巨角卢鲁's clash waits for its end. Left running on purpose: checks the state does not stop (异常效果: 水遁忍者's damage — 「仍然能正常造成伤害」), passive auras and terrain / periodic effects (no skills), death / damage-taken triggers, skill cooldowns (only the cast waits) — and 弧光锋卫's bleed, which is the state's own (天赋 「处于失衡状态时，每0.066s受到400点无来源真实持续伤害」: every 0.066 s for as long as it lasts — until 0.2.2 one hit per tile moved [ASSUMED]). Length, game seconds: a push — the 位移时间 of its 受力等级, PRTS 游戏数据基础 推力-位移近似对应表 (`constants.js PUSH_UNBALANCE`: −2 → 0.2, −1 → 0.4, 0 → 0.8, 1 → 0.9, 2 → 32/30, ≥ 3 → 35/30), the level push() computes (the −2 correction included), kept when the 特效 column or a wall shortens the slide ([ASSUMED] for the wall; a wall at the first step → the 0.1 s floor [ASSUMED]); a pull — its force window, 推与拉 「作用时间默认为 1 s；若本次受力等级 < −1，作用时间改为 0.5 s」 (`PULL_UNBALANCE` / `_WEAK`), to its end after the 急停 too (「目标将仍保持失衡状态至拉力作用时间结束为止」), none at ≤ −3; a 静态刚体 hit by a force > 0 — no movement, the state while the force acts (特殊机制 静态刚体: 「在失去施力后立刻」 out, 「0.1 秒保底」): a push 0.1 s (`UNBALANCE_MIN`; a push's force is instant), a pull its window; 失衡免疫 and leaders never. 浮空 ends it (术语释义 浮空), so do a 重生 (重生 / 逐火's 余烬) and a route APPEAR relocation — forced state switches (失衡位移机制). The end compares with 1e-9 so a float-summed 35/30 s keeps its 35 frames. The `displace` fx carries the length (`dur`): the client's slide takes as long (render/units.js slideTo). PR #392's 0.6387·√tiles (from the page's μ =Line truncated
+| `displace(enemy, {x, y}, tiles, {dur, keepFacing})` | the raw mover behind push / pull: along passable tiles (by `motion`: FLY in the rect, else ground-passable), no weight rule, no 失衡 state of its own (push / pull add it; `dur` only rides on its `displace` fx); nothing for 失衡免疫 (`noDisplace`: 近地悬浮 incl. 喷气人's 飞行模式, 浮空, the 胄 parts, 守墓石像's statue and flight), 静态刚体 (`def.staticBody`) and leaders (`_displaceable`); unblocks + re-paths |
 | `after(seconds, fn, {owner})`, `every(seconds, fn, {owner, immediate})` | return `{cancel()}`; fn(battle, sched) |
 | `fx(kind, params)`, `rng()` (+ `rng.int/range/chance/pick/shuffle/weighted`) | never use Math.random; for distances, angles and powers use `hypot`, `sin`, `cos`, `atan2`, `powi` from `server/sim/detmath.js`, never `Math.hypot` / `sin` / `cos` / `atan2` / `pow` / `**` (their last bits differ between browsers) |
 | `forceAttack(unit, targets?, { noAmmo })` | an immediate attack with the current profile (hooks, attack SP, a running ammo skill's bullet); `noAmmo: true` = spends no bullet and emits no `ammoUsed` (圣约送葬人 extra attack). Returns true when it attacked |
@@ -917,6 +917,14 @@ instance) and skip `'counter'` / `'reflect'` damage. When the guard trips, the l
 | `battle.grid` | `tile(r,c)` → `{glyph, key, height:'LOW'|'HIGH', build, pass:'ALL'|'FLY'|'NONE', terrain, special}`, `inRect`, `canStand(r,c,{ranged})` (every automatic placement: the 突袭 landing tile, tactical points, summon tiles — `build` is the effective deploy type, so never the 深水区 `tile_deepsea` (PRTS 深水区 地形信息 "拒绝部署（待补充）"; the 特制水上平台 of the inactive act1 m05 is not modelled, its tiles stay NONE here [ASSUMED]); no melee unit on a hard-blocked 射击台 / mound tile), `groundPassable`, `isLow`, `findPath(sr,sc,er,ec)`, `specialTiles('start'|'end'|…)`; `battle.rect`, `battle.stage` (normalised stage incl. `special` terrain params) |
 | `battle.data` | DataSource: `getChess(id, loadout?)`, `getEnemy(key)`, `getToken(id, ownerChessId, ownerLoadout?)`, `getStage(id)`, `getWave(id)` (normalised defs; raw record in `def.raw`; the per-battle loadout view, §12) |
 
+`keepFacing` is presentation metadata emitted by `push` and `pull` by default: `displace` includes it in the fx so the
+client retains the enemy's pre-hit facing through its slide. Directional Wild Mane S2 (#418) and radial Mostima S3 have
+official footage directly showing unchanged facing. Mint S2 uses `push({ inward: true })`, while hook pulls such as
+Gladiia S1/S2 use `pullToFront` → `pull`; the supplied drag clips directly show unchanged facing before and after the
+shown pulls. Applying that observation to pulls against prior facing and other sources is [ASSUMED]. Either method can
+pass `keepFacing: false` for a documented exception. Raw `displace` calls still face their travel direction. No facing
+flag alters movement or 失衡.
+
 ---
 
 ## 7. Skills