Changelog

What changed, and why.

1.0 — 29 August 2026

First public release.

Tap mode — one cow, five random reactions, combo counter.
Invasion mode — cows converge on a snake at the centre; tap them before they arrive.
Four difficulty levels, from Easy to Insane.
Cows speed up as your score rises, capped at +60%.
Spawn angles are spaced apart so cows do not arrive in a clump.

Procedural jaw deformation, because the source model has no skeleton and no mouth cavity.
Lip sync driven by the real-time amplitude of the audio rather than a fixed animation.
Each cow in invasion mode owns its geometry, so only the one that was tapped opens its mouth.
The snake uses skeletal animation — idle, and a strike when a cow gets through.

Fully procedural grassland: canvas-generated sky and grass, 900 instanced tufts, drifting clouds.
Camera framing adapts to the screen's aspect ratio, so the whole arena fits on a portrait phone.

Only a 2-second slice of the source recording is used.
A new moo fades the previous one out over 70ms instead of overlapping, so rapid tapping sounds like separate calls.
Short fades at both ends prevent clicks from cutting into the middle of the waveform.

Textures converted from PNG to JPEG: 7.1 MB → 0.25 MB, with a measured mean pixel difference of 1.62/255.
Total download reduced from 12 MB to 4.8 MB.
Mesh deformation touches only the ~1,600 affected vertices, and normals are recomputed only while the mouth is moving.

Flat shading caused by recomputing normals on non-indexed geometry — fixed by welding vertices first.
Rotation pivot was at the cow's feet, so backflips threw it off screen — moved to the model's centre.
Z-fighting between the arena disc and the field — resolved by offsetting the ground 0.09 units down.
The snake was invisible because its bounding box was measured from bone nodes rather than the skinned mesh.
Text baked into the model's neck texture was removed by masking and inpainting.