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ludic.nav (23.5b): a baked mesh resident by chunk

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nav_load_index indexes a saved mesh's tiles (cell, offset, size, ref) from their headers and keeps the file open, with no tile in. nav_tiles_keep reads in the tiles within rin of any player and removes those past rout of all; the file is read through Ludic's pack-aware file_open. The file format is unchanged. tiles_test: tiles come and go with the point, a path works across the seams once they are in, and a reset closes all. Measured on the baked maps (the 900 / 1100 m ring round the start): Maroon 617 of 1807 tiles in, 8.9 MB instead of about 27 MB for a person and 5.4 MB of about 14 for a large walker; Lamar 391 of 1147. Both libraries are rebuilt; nav 17/17 on the Mac and the PC, DLL KERNEL32 only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-28 11:07:27 +03:00
parent 3915af34c2
commit e807fd556c
12 changed files with 229 additions and 6 deletions
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31
packages/ludic.nav/tests/tiles_test.ludic
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@ -63,4 +63,35 @@ program TilesTest {
expect_eq(a, b)
expect_near(last_x(nav_st), ax, 0.0001)
}
test "a saved mesh as an index: only the tiles near a player are in, and they come and go" (nav_st: mut NavState) {
expect_eq(map(nav_st, false), 0)
let path = Os.temp_dir() + "/ludic_nav_resident.navmesh"
expect(nav_save_file(nav_st, NAV_PERSON, path))
nav_reset(nav_st)
expect(nav_load_index(nav_st, NAV_PERSON, path))
expect_eq(nav_tiles_in(nav_st, NAV_PERSON), 0)
expect(not nav_nearest(nav_st, NAV_PERSON, 20.0, 0.0, 20.0))
let xs = floats(1)
let zs = floats(1)
xs[0] = 20.0
zs[0] = 20.0
expect_eq(nav_tiles_keep(nav_st, NAV_PERSON, xs, zs, 1, 60.0, 90.0), 1)
expect_eq(nav_tiles_in(nav_st, NAV_PERSON), 1)
expect(nav_nearest(nav_st, NAV_PERSON, 20.0, 0.0, 20.0))
expect(not nav_nearest(nav_st, NAV_PERSON, 100.0, 0.0, 100.0))
xs[0] = 64.0
zs[0] = 64.0
expect_eq(nav_tiles_keep(nav_st, NAV_PERSON, xs, zs, 1, 60.0, 90.0), 3)
expect_eq(nav_tiles_in(nav_st, NAV_PERSON), 4)
expect(nav_path(nav_st, NAV_PERSON, 0, 10.0, 0.0, 20.0, 120.0, 0.0, 20.0) >= 3)
expect(not nav_partial(nav_st, NAV_PERSON))
xs[0] = 110.0
zs[0] = 110.0
expect_eq(nav_tiles_keep(nav_st, NAV_PERSON, xs, zs, 1, 60.0, 90.0), 1)
expect_eq(nav_tiles_in(nav_st, NAV_PERSON), 3)
expect(not nav_nearest(nav_st, NAV_PERSON, 20.0, 0.0, 20.0))
nav_reset(nav_st)
expect_eq(nav_tiles_in(nav_st, NAV_PERSON), 0)
}
}