Phase 1 of the fuller type-system proposal: two by-value spatial types that lower to packed integers (no heap, copy like scalars). - IVec2 — integer 2D vector, a pair of int packed into one i64, for tile and grid coordinates: make/zero/x/y/add/sub/scale/dot, the grid distance manhattan, equal, and to_vector (widen into the fixed-point Vector). - Rect — axis-aligned rectangle, four Q16.16 fixed components packed into one i128, for HUD boxes and hitboxes: make/x/y/w/h, the derived right/bottom/center, and the contains (point) / intersects (overlap) tests. Both are exact and deterministic, bit-identical on every platform. Vector and Color already cover phase 1's other 2D primitives. Wired end to end: emit_core llty (IVec2->i64, Rect->i128), emit_call dispatch, the FRAGS list + reseeded seed, a selfhost test (types2d), per-symbol docs + type pages + inventory, and the vocabulary/editor sync (header, JetBrains, TextMate, LSP). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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432 B
| id | name | category | kind | tokens | sig | tip | order | ns | member |
|---|---|---|---|---|---|---|---|---|---|
| ivec2-dot | IVec2.dot | ivec2 | namespace-method | IVec2.dot | IVec2.dot(a, b) -> int | The dot product ax*bx + ay*by. | 7 | IVec2 | dot |
Returns the integer dot product axbx + ayby. Its sign tells you whether two directions point roughly the same way.
program Demo {
handler Step phase Update {
let facing = IVec2.dot(heading, toTarget)
}
}