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feat(physics): define deterministic flat collision assets

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Add immutable indexed physics and containment BSP records, exact-bit polygon and Setup payloads, separated CellStruct/topology ownership, and iterative positive-before-negative flattening. Reject malformed graphs and ranges, and prove source identity over synthetic edge cases and installed retail DAT samples without cutting production traversal over.
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Erik 2026-07-25 14:52:47 +02:00
parent 16d182c2f0
commit d9300c7854
11 changed files with 2094 additions and 21 deletions
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docs/plans/2026-07-25-modern-runtime-slice-i.md
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@ -1,7 +1,7 @@
# Modern runtime Slice I — flat collision assets and zero-allocation physics
**Status:** I0–I1 COMPLETE — retail oracle, graph fixtures, and
reset-complete zero-allocation transition/query scratch fixed; I2 active
**Status:** I0–I2 COMPLETE — retail oracle, zero-allocation transition
scratch, and deterministic immutable collision records fixed; I3 active
**Parent:** `2026-07-24-modern-runtime-architecture.md`, Slice I
**Purpose:** remove parsed DAT object graphs and steady collision allocations
without changing one retail collision decision, float, comparison, or traversal
@ -146,7 +146,12 @@ Issue #237 is closed. Evidence:
6. Keep source graph and flat asset together only in test/shadow fixtures.
Gate: round-trip structural equality over synthetic edge cases and installed
DAT samples; no traversal cutover yet.
DAT samples; no traversal cutover yet. **PASSED 2026-07-25:** 13 focused
structural/installed-DAT tests, the 131-test expanded Slice I oracle, complete
Core/solution Release gates, exact float-bit comparisons, and corruption
tripwires pass. The graph route remains the only executable traversal.
Evidence:
[`../research/2026-07-25-slice-i2-flat-collision-schema.md`](../research/2026-07-25-slice-i2-flat-collision-schema.md).
### I3 — package serialization, bake, and prepared collision source