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Add validation and adjust heightfield parameters in terrain model collider attachment

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This commit is contained in:
Victor Giers
2026-04-04 08:21:13 +02:00
parent 27269c55d0
commit cc8dd23768
1 changed files with 9 additions and 1 deletions
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10
src/runtime-three/rapier-collision-world.ts
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@@ -115,6 +115,10 @@ function attachStaticModelCollider(world: RAPIER.World, collider: GeneratedModel
}
function attachTerrainModelCollider(world: RAPIER.World, collider: GeneratedModelHeightfieldCollider) {
if (collider.rows < 2 || collider.cols < 2) {
throw new Error(`Terrain collider ${collider.instanceId} must have at least a 2x2 height sample grid.`);
}
const body = createFixedBodyForModelCollider(world, collider);
const center = scaleBoundsCenter(
{
@@ -131,9 +135,13 @@ function attachTerrainModelCollider(world: RAPIER.World, collider: GeneratedMode
},
collider.transform.scale
);
const rowSubdivisions = collider.rows - 1;
const colSubdivisions = collider.cols - 1;
world.createCollider(
RAPIER.ColliderDesc.heightfield(collider.rows, collider.cols, collider.heights, {
// Rapier expects the number of grid subdivisions here, while our generated
// collider stores the sampled height grid dimensions.
RAPIER.ColliderDesc.heightfield(rowSubdivisions, colSubdivisions, collider.heights, {
x: (collider.maxX - collider.minX) * collider.transform.scale.x,
y: collider.transform.scale.y,
z: (collider.maxZ - collider.minZ) * collider.transform.scale.z