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feat(senses): walkers slide round still things, and lines of sight are the world's to answer

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- ludic.wildlife: WildlifeWorld.push / pushed_x / pushed_z (defaults change nothing); a ground
  walker's step is slid clear of a still thing with a body from its species' size and scale, and
  a step that gets nowhere turns away as the water does. Birds are not pushed; no dice added.
- ludic.npc: NpcWorld.push / pushed_x / pushed_z (a person 0.35 m round) in npc_walk, and
  NpcWorld.clear (default true), which npc_line_ok asks at 1 m so a detour does not cut a trunk.
- ludic.aim: AimView.clear replaces AimView.ground and the ground march; the pick asks the line
  a body's width short of where the ray enters the thing (aim_clear_at(t, back)), so a solid
  thing does not hide itself. probe.ludic (the ground-agreement probe) and AimView.dry are gone.
- ludic.photo: PhotoLens.clear replaces PhotoLens.ground, PhotoLens.trunk and the march.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-27 00:59:39 +03:00
parent d2cd775309
commit 56e4b6d688
24 changed files with 230 additions and 152 deletions
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26
packages/ludic.npc/walk.ludic
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@ -1,5 +1,8 @@
# walk.ludic - walking to the target: turn toward it, step, never into the water and never up a
# scramble - step round it instead - and give up on a target that gets no closer for twenty seconds
# walk.ludic - walking to the target: turn toward it, step, slid round a trunk or a tent, never into
# the water and never up a scramble - step round it instead - and give up on a target that gets no
# closer for twenty seconds
const NP_BODY_R: float = 0.35 # a person's width, for the still things
export function npc_walk(npc_st: mut NpcState, p: NpcPerson, dt: float) -> void {
var gx = p.tx
var gz = p.tz
@ -29,10 +32,12 @@ export function npc_walk(npc_st: mut NpcState, p: NpcPerson, dt: float) -> void
let r = 3.0 * dt
p.yaw = p.yaw + Math.clamp(npc_wrap(want - p.yaw), -r, r)
let step = sp * dt
let nx = p.x - Math.sin(p.yaw) * step
let nz = p.z - Math.cos(p.yaw) * step
np_slide(npc_st, p, p.x - Math.sin(p.yaw) * step, p.z - Math.cos(p.yaw) * step)
let nx = npc_st.np_ask_x
let nz = npc_st.np_ask_z
let nh = NpcWorld.ground(nx, nz)
if nh < NpcWorld.water(nx, nz) + 0.4 or nh - p.y > step * 1.4 {
let slid = Math.abs(nx - p.x) + Math.abs(nz - p.z)
if nh < NpcWorld.water(nx, nz) + 0.4 or nh - p.y > step * 1.4 or slid < step * 0.2 {
p.stall = p.stall + dt
if p.stall > p.stall_max { p.stall_max = p.stall }
if p.detours < 10 and np_detour(p, want) {
@ -49,6 +54,17 @@ export function npc_walk(npc_st: mut NpcState, p: NpcPerson, dt: float) -> void
p.phase = p.phase + step * 2.6
}
# (x, z) slid clear of every still thing for a person; np_ask_x / _z hold where it came out
function np_slide(npc_st: mut NpcState, p: NpcPerson, x: float, z: float) -> void {
npc_st.np_ask_x = x
npc_st.np_ask_z = z
if not NpcWorld.push(x, z, NP_BODY_R, p.y + 0.1, p.y + 1.8) { return }
let ox = NpcWorld.pushed_x()
let oz = NpcWorld.pushed_z()
npc_st.np_ask_x = ox
npc_st.np_ask_z = oz
}
# there: a step round something ends, or the errand begins, facing what it came for
function np_arrive(npc_st: mut NpcState, p: NpcPerson) -> void {
if p.via_on {