Column-vector rotation matrix for the authored Euler order (`Rz(roll) * Ry(yaw) * Rx(pitch)`), the f32 mirror of [`rotate_euler_local_q12`] / the runt

Read back a `(w × h)` sub-rect of the target starting at `(x, y)` in target-pixel coordinates (i.e. PSX VRAM coords × internal scale). Designed for pa

Pack a (u, v) pair into the low 16 bits of a UV0/UV1/UV2 word.

Add a file to the root directory. Name is normalised later.

Pixel advance for `ch`, falling back to [`BitmapFont::advance_x`] when the font has no per-glyph table or `ch` is outside the covered range.

Transform and project a world-space vertex.

Queue one host-drawn overlay segment between two screen-projected vertices. Unlike the scene command log, this is painted by egui on top of the previe

CFC2 view of control register `idx`.

Resolve every animation a model can play. Legacy model-local clips are listed first so existing clip indices remain stable; target-specific cooked cli

Shared body: side-load, capture, either assert-against-golden or print-capture-and-fail.

Write a 32-bit word. `phys` must be inside `BASE..BASE+SIZE`. `now` is the current bus cycle; used only for diagnostics (records when mode writes rese

Convert editor-Y rotation in degrees to PSX angle units (Q12, 4096 per turn). Delegates to the shared converter so preview and the playtest writer can

Add a signed Q0.12 delta, wrapping at one revolution.

Allocate a power-of-two texture-window rectangle. Dimensions are texels. They must be 8-texel aligned, power-of-two, and no larger than 128 texels, m

Apply one scene-tree action collected from a row.

Reset every slot for a fresh frame. Entry `[0]` is the terminator (farthest from camera); each higher slot points to the slot below. Submission starts

Default authored UI letter spacing, in PSX framebuffer pixels.

Run a strict bbox-only diff: count mismatches inside the triangle's bbox and a 2-pixel halo. Skewed triangles will always disagree on a few edge pixel

True if no primitives have been written this frame.

Read a 32-bit little-endian word from a virtual address. Panics on any address that does not resolve to a currently-mapped region. This is intentiona

Sector by `(x, z)` cell index, or `None` for empty cells or out-of-range coords.

Immutable sector.

Return options with textured triangle splitting enabled/disabled.

Packed CLUT word for the first textured UV word.

Like [`find_asset`] but also asserts the asset has the expected kind. Use this when you're about to feed bytes to a kind-specific loader (`World::from

Joint pose at `frame_index`, `joint_index`.

Write a single u32 as 8 hex digits, no prefix, uppercase.

Active floor's grid for a room, mutable. Routes every floor-aware edit (paint, height drag, material, vertex, erase, resize, grow) to the floor the us

Triangle-local heights in the same corner order returned by [`horizontal_triangle_corners`].

Advance the motor by elapsed display ticks with room and actor collision.

Return options with an optional projected-edge split threshold.

Write a 32-bit word to an MDEC register. Commands + data arrive at `0x1820`, control bits at `0x1824`.

Write a byte to a virtual address. Unmapped writes in MMIO / expansion / BIOS ranges are silently dropped (same rationale as [`Bus::write32`]).

The formatted text, e.g. `"0x1F40"`.

Reset the result for reuse.

Remove a resource from the project and clear references to it.

Editor-viewport position → world-space `(x, 0, z)` in engine units (room-local, origin-aware). Used by the editor's 3D preview path which renders cell

Mutable floor `i`.

Floor diagonal split id.

Apply per-face lighting: ambient + linear-attenuation sum of every point light whose radius covers `face_center`. Final RGB clamps to 8 bits and modul

Q12 fixed-point multiply: `(value * q12) >> 12`, saturated to `i32`.