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physics: Jolt's floor sized for what moves - pairs 4096, contacts 2048 and a 4 MB temp heap by default (phys_open_sized for more), and a body past max_bodies or a step past the pairs or contacts is Mem.over, never a quiet -1; world.ludic split from shapes.ludic

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An empty world at the game's size held 51839 KB of Jolt's heap (200000 bodies, 65536 pairs, 20480
contacts, a 32 MB temp heap), the jolt= floor under every walk. Pairs and contacts come from what
moves - drops, boats, a few walkers - and a valley's still things make none. Now 11743 KB at 200000
bodies and 8461 KB at the 98304 the game opens for (jolt_floor_test holds it under 16 MB). The temp heap
still falls back to malloc for a step that wants more.

lib/macos-arm64 rebuilt; lib/windows-x64 needs native/build.sh on the PC (jph_world_new's new sizes).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-29 16:18:42 +03:00
parent 031fcad641
commit b4af12025d
11 changed files with 95 additions and 52 deletions
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packages/ludic.physics/bodies.ludic
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@ -16,7 +16,10 @@ export property PhysPose {
function ph_add(physics_st: mut PhysicsState, shape: int, x: float, y: float, z: float, yaw: float, motion: int, layer: int, mass: float) -> int {
let s = ph_shape(physics_st, shape)
if physics_st.ph_world == null or s == null { return -1 }
return jph_body_add(physics_st.ph_world, s, x, y, z, yaw, motion, layer, mass, 0.6, 0.1)
let id = jph_body_add(physics_st.ph_world, s, x, y, z, yaw, motion, layer, mass, 0.6, 0.1)
# 25.5a: a world full to the bodies it was opened for is a failure, never a thing quietly not there
if id < 0 and jph_world_bodies(physics_st.ph_world) >= physics_st.ph_max { Mem.over("a physics body past phys_open's max_bodies") }
return id
}
# the ground: a heightfield or a mesh at the world's origin