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ludic.physics: queries fill a record the caller keeps, and allocate nothing

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phys_pose, phys_ray, phys_push and phys_walker_pose each made a new record per call, some several times a frame, and Ludic never gives one back. They now fill the caller's PhysPose / PhysHit / PhysPush / PhysWalk and return whether they found anything. phys_overlap returns a count; phys_overlap_id(i) reads each id back. The package's own uses (phys_resolve, phys_row, phys_walker_move) read the values buffer directly. Tests take small allocating helpers. physics 20, character 15, vehicles 8.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-27 23:18:26 +03:00
parent b6c4d703a2
commit f048ffb6ac
11 changed files with 140 additions and 87 deletions
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13
packages/ludic.physics/bodies.ludic
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@ -43,17 +43,16 @@ export function phys_remove(physics_st: mut PhysicsState, id: int) -> void {
jph_body_remove(physics_st.ph_world, id)
}
# where a body is, how it is turned and how fast it goes; null when there is no such body
export function phys_pose(physics_st: mut PhysicsState, id: int) -> PhysPose {
if physics_st.ph_world == null { return null }
ph_buffers()
if jph_body_read(physics_st.ph_world, id, physics_st.ph_vals) != 0 { return null }
# where a body is, how it is turned and how fast it goes, into the caller's own record (a query asked
# every frame allocates nothing: there is no GC); false, and p untouched, when there is no such body
export function phys_pose(physics_st: mut PhysicsState, id: int, p: PhysPose) -> bool {
if physics_st.ph_world == null { return false }
if jph_body_read(physics_st.ph_world, id, physics_st.ph_vals) != 0 { return false }
let v = physics_st.ph_vals
let p = new PhysPose
p.x = v[0]; p.y = v[1]; p.z = v[2]
p.qx = v[3]; p.qy = v[4]; p.qz = v[5]; p.qw = v[6]
p.vx = v[7]; p.vy = v[8]; p.vz = v[9]
return p
return true
}
# the heading a pose's rotation gives, in radians about y