Files
feuerwerk/tools/e2e/41-physics.mjs
T
adminandClaude Opus 5.5 543b052136 Stamp the release in the page for the drag check in e2e 41 (#282)
The first CI run after 9cff528 failed e2e 41 again, at the release this
time (task 405): the hold was fine for 54 frames, but the first sample
after the release was 6.9 units below the hold, over the bound of 3.
The test took its release time after the round trip of the mouse event
and one more evaluate. The frames in between were missing, so the
first counted sample was already about 100 ms into the fall.

- The page stamps the release itself with a capturing `pointerup`
  listener. Held and released samples are split at that stamp.
- The fixed bound on the first sample after the release is gone. How
  far that frame has fallen follows the frame time. Instead every
  sample in the first 200 ms must stay below the hold and keep
  falling, which is what "let go at rest" means: no jump, no kick up.
- The 200 ms fall still has to be more than 1 and less than 40 units.
  The comment now says about 25, as measured, instead of under 20.

Tests:
- e2e 41 on melektaus-atx: 8 of 8 runs ALL PASSED, 21 checks. The
  first sample came 6 to 42 ms after the stamp.
- Counter-check: a release velocity of y -2 instead of 0 in
  PhysicsSystem makes the body rise to -3510 and the check fails.
- Gate on melektaus-atx: 195 files, 2829 tests, CHECK EXIT 0.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-29 22:48:23 +02:00

522 lines
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import { edge, node } from '../lib/builders.mjs';
import { inView, LANES, MAKE_OBJECT } from './lib/scaffold.mjs';
/** Kicks its owner in On start, with the scene's gravity switched off first: it glides at 100 per second. */
const KICK = 200;
const KICKED_MASS = 2;
const kickGraph = {
nodes: [
node('pk-start', 'OnStart', 0, 0),
node('pk-gravity', 'SetGravity', 300, 0, { x: 0, y: 0 }),
node('pk-owner', 'Owner', 300, 160),
node('pk-kick', 'ApplyImpulse', 600, 0, { x: KICK, y: 0 }),
],
edges: [
edge('pk-e1', 'pk-start', 'exec', 'pk-gravity', 'exec'),
edge('pk-e2', 'pk-gravity', 'exec', 'pk-kick', 'exec'),
edge('pk-e3', 'pk-owner', 'object', 'pk-kick', 'object'),
],
};
/** Walks its owner right at 120 per second with "Collide with solids" on. */
const WALK = 120;
const walkGraph = {
nodes: [
node('pw-update', 'OnUpdate', 0, 0),
node('pw-owner', 'Owner', 0, 160),
node('pw-move', 'Move', 300, 0, { dx: 1, scale: WALK, collide: true }),
],
edges: [
edge('pw-e1', 'pw-update', 'exec', 'pw-move', 'exec'),
edge('pw-e2', 'pw-update', 'dt', 'pw-move', 'dt'),
edge('pw-e3', 'pw-owner', 'object', 'pw-move', 'object'),
],
};
/**
* Rolls its owner right at 120 per second with "Collide with solids" on, and logs Move's normal
* (x, then y) on every frame that hits something.
*/
const BALL_R = 20;
const CORNER_DROP = 12;
const rollGraph = {
nodes: [
node('pr-update', 'OnUpdate', 0, 0),
node('pr-owner', 'Owner', 0, 160),
node('pr-move', 'Move', 300, 0, { dx: 1, scale: WALK, collide: true }),
node('pr-hit', 'Branch', 600, 0),
node('pr-log-x', 'Log', 850, 0),
node('pr-log-y', 'Log', 1100, 0),
],
edges: [
edge('pr-e1', 'pr-update', 'exec', 'pr-move', 'exec'),
edge('pr-e2', 'pr-update', 'dt', 'pr-move', 'dt'),
edge('pr-e3', 'pr-owner', 'object', 'pr-move', 'object'),
edge('pr-e4', 'pr-move', 'exec', 'pr-hit', 'exec'),
edge('pr-e5', 'pr-move', 'hit', 'pr-hit', 'condition'),
edge('pr-e6', 'pr-hit', 'then', 'pr-log-x', 'exec'),
edge('pr-e7', 'pr-move', 'normalX', 'pr-log-x', 'message'),
edge('pr-e8', 'pr-log-x', 'exec', 'pr-log-y', 'exec'),
edge('pr-e9', 'pr-move', 'normalY', 'pr-log-y', 'message'),
],
};
/**
* The physics engine (Rapier) loads in the editor, in the background after the first project is
* open, from a chunk of its own – the editor bundle does not carry it. A played scene simulates its
* rigidbodies on it (#146).
*/
export async function physics(t) {
const { check, json, waitUntil, consoleLog, evaluate, mutate, select, click, clickText, press, typeText } =
t;
const { has, object, asset, objects, state, settle, sleep, play, stop, shot, mouse, showTab } = t;
await waitUntil(`['ready', 'failed'].includes(__gm.physics().state)`, { timeout: 15000 });
const status = await json('__gm.physics()');
check(
'Rapier loads in the editor without Play',
status.state === 'ready' && status.version === '0.20.0',
JSON.stringify(status),
);
const scripts = await json(
`performance.getEntriesByType('resource').map((e) => e.name).filter((n) => n.endsWith('.js')).map((n) => n.split('/').pop())`,
);
check(
'it comes from a chunk of its own',
scripts.some((name) => /^rapier-.+\.js$/.test(name)),
JSON.stringify(scripts),
);
check(
'loading it writes nothing to the console',
!consoleLog.some((line) => /\[physics\]|rapier/i.test(line)),
consoleLog.filter((line) => /\[physics\]|rapier/i.test(line)).join(' | '),
);
// 41b. A crate and a ball above a ground on a lane of their own, each with a collider and no
// rigidbody yet. The rigidbodies come from the hierarchy menu, the ball's bounciness is typed
// into its collider's field, and the played scene is sampled frame by frame.
const Y = LANES.physics;
const REST = Y + 200 - 20 - 20; // the ground's top face minus half of a 40-high body
await mutate(`
const scene = __gm.state.activeScene;
const assets = __gm.state.project.assets;
${MAKE_OBJECT}
const collider = (id, props) =>
assets.push({ id, type: 'collider', name: id, props: { shape: 'box', width: 40, height: 40, radius: 20, isTrigger: false, ...props } });
collider('phys-col-ground', { width: 600, height: 40 });
collider('phys-col-crate', {});
collider('phys-col-ball', { shape: 'circle' });
const put = (id, assetId, parentId, x, y, name, overrides = {}) => {
const o = make(id, assetId, parentId, y, name);
o.position.x = x;
o.overrides = overrides;
scene.objects.push(o);
};
put('phys-ground', 'crate', '', 0, ${Y + 200}, 'Physics ground', { width: 600, height: 40 });
put('phys-crate', 'crate', '', -100, ${Y}, 'Physics crate', { width: 40, height: 40 });
put('phys-ball', 'crate', '', 100, ${Y}, 'Physics ball', { width: 40, height: 40 });
put('phys-ground-col', 'phys-col-ground', 'phys-ground', 0, 0);
put('phys-crate-col', 'phys-col-crate', 'phys-crate', 0, 0);
put('phys-ball-col', 'phys-col-ball', 'phys-ball', 0, 0);
__gm.state.select(null)`);
const selectObject = (id) => select({ kind: 'object', holderId: 'scene1', objectId: id, objectIds: [id] });
const rigidbodyFromMenu = async (id) => {
await selectObject(id);
const row = await inView(t, '__gm.leftColumn().objects', `__gm.hierarchyRow(${JSON.stringify(id)})`);
const before = (await objects()).length;
await click(row.x, row.y, 'right');
await clickText('Add rigidbody…');
// An enabled entry opens the second menu (#222); a disabled one leaves the first standing.
if (await has('Create new rigidbody')) await clickText('Create new rigidbody');
await press('Escape');
const s = await state();
const selected = s.selection?.kind === 'object' ? await object(s.selection.objectId) : null;
return { added: (await objects()).length - before, selected };
};
const crate = await rigidbodyFromMenu('phys-crate');
const crateBody = crate.selected;
check(
'Add rigidbody puts a dynamic rigidbody below the object and shows its settings',
crate.added === 1 &&
crateBody?.parentId === 'phys-crate' &&
(await asset(crateBody.assetId))?.type === 'rigidbody' &&
(await has('Body type')) &&
(await has('Dynamic')),
JSON.stringify(crate),
);
check(
'the rigidbody is drawn as an icon in the overlay',
crateBody && (await evaluate(`__gm.layerOf('${crateBody.id}')`)) === 'overlay',
);
const again = await rigidbodyFromMenu('phys-crate');
check('the menu offers no second rigidbody', again.added === 0, JSON.stringify(again));
const ballBody = (await rigidbodyFromMenu('phys-ball')).selected;
await evaluate(`__gm.lookAt(0, ${Y + 100})`);
await settle();
await shot('41-rigidbody');
// Every symbol has an icon and wants its object's position. One with room stands there; icons
// that want the same spot share it on a ring round it, whoever owns them – two stand left and
// right of it, in hierarchy order: the seeded collider first, the rigidbody added above second.
const icons = {
ground: await json(`__gm.sceneIcon('phys-ground-col')`),
crate: await json(`__gm.sceneIcon('phys-crate-col')`),
crateBody: await json(`__gm.sceneIcon('${crateBody?.id}')`),
ball: await json(`__gm.sceneIcon('phys-ball-col')`),
ballBody: await json(`__gm.sceneIcon('${ballBody?.id}')`),
};
const near = (icon, x, y) =>
icon?.visible === true && Math.abs(icon.x - x) < 0.01 && Math.abs(icon.y - y) < 0.01;
check(
'a symbol with room around it stands on its object, in the overlay',
near(icons.ground, 0, Y + 200) && icons.ground.layer === 'overlay',
JSON.stringify(icons.ground),
);
check(
'icons on one spot stand left and right of it, a symbol apart',
near(icons.crate, -110.5, Y) &&
near(icons.crateBody, -89.5, Y) &&
near(icons.ball, 89.5, Y) &&
near(icons.ballBody, 110.5, Y),
JSON.stringify(icons),
);
// An icon is clicked like its object: it selects it, even over a sprite. Beside the icon the
// sprite under it is picked as before.
const selectedId = async () => {
const s = await state();
return s.selection?.kind === 'object' ? s.selection.objectId : null;
};
const zoom = (icons.crateBody.screen.x - icons.crate.screen.x) / 21;
const picks = {};
for (const [name, id, dx] of [
['groundIcon', 'phys-ground-col', 0],
['crateIcon', 'phys-crate-col', 0],
['crateBodyIcon', crateBody?.id, 0],
['groundBeside', 'phys-ground-col', 40],
]) {
await select(null);
const at = await json(`__gm.sceneIcon('${id}')?.screen`);
await click(at.x + dx * zoom, at.y);
picks[name] = { selected: await selectedId() };
}
check(
'a click on an icon selects its object, beside it the sprite below',
icons.ground.clickable === true &&
picks.groundIcon.selected === 'phys-ground-col' &&
picks.crateIcon.selected === 'phys-crate-col' &&
picks.crateBodyIcon.selected === crateBody?.id &&
picks.groundBeside.selected === 'phys-ground',
JSON.stringify({ zoom, picks }),
);
await selectObject('phys-ball-col');
const field = await inView(t, '__gm.inspectorRect()', "__gm.inspectorField('Bounciness')");
if (field) {
await click(field.x, field.y);
await press('a', { ctrl: true });
await typeText('0.8');
await press('Enter');
}
await settle();
check(
"the collider's Bounciness field takes 0.8",
(await object('phys-ball-col'))?.overrides?.bounciness === 0.8,
JSON.stringify({ field, overrides: (await object('phys-ball-col'))?.overrides }),
);
await select(null);
await play();
await evaluate(`(() => {
const out = (window.__physicsSamples = []);
const start = performance.now();
const sample = () => {
const w = __gm.world();
if (!w) return;
const y = (id) => w.entities.find((e) => e.objectId === id)?.worldY;
out.push({ t: performance.now() - start, crate: y('phys-crate'), ball: y('phys-ball') });
if (performance.now() - start < 3000) requestAnimationFrame(sample);
};
requestAnimationFrame(sample);
})()`);
await sleep(3300);
const samples = await json('window.__physicsSamples');
await stop();
const last = samples.slice(-20).map((s) => s.crate);
check(
'the crate falls onto the ground and stays there',
samples.length > 100 && samples[0].crate < REST - 50 && last.every((y) => Math.abs(y - REST) < 1),
JSON.stringify({ frames: samples.length, first: samples[0], last: last.slice(-3), rest: REST }),
);
// The heights the ball climbs back to: every turn from rising to falling after the first landing.
// Turning points, not a threshold at the ground: the ball lands at ~9 px per frame, and whether a
// drawn frame comes within a pixel of the landing depends on where it falls between two steps.
const peaks = [];
let landed = false;
for (let i = 1; i < samples.length - 1; i++) {
const [before, y, after] = [samples[i - 1].ball, samples[i].ball, samples[i + 1].ball];
if (y >= before && y > after) landed = true;
else if (landed && y <= before && y < after && REST - y > 2) peaks.push(REST - y);
}
const drop = REST - Y;
check(
'the ball bounces back up and every bounce is lower than the one before',
peaks.length >= 2 &&
peaks[0] / drop > 0.4 &&
peaks[0] / drop < 0.8 &&
peaks.every((h, i) => i === 0 || h < peaks[i - 1]),
JSON.stringify({ drop, peaks: peaks.map((h) => Math.round(h * 10) / 10), frames: samples.length }),
);
check(
'playing left the scene as it was',
(await object('phys-crate'))?.position.y === Y && (await object('phys-ball'))?.position.y === Y,
);
// A body dragged in the scene view while the game runs sticks to the pointer as if it had no
// rigidbody: lifted off the ground it hangs where it is held, and is let go at rest.
const LIFT = 150;
await play();
await sleep(1500);
await showTab('scene');
await selectObject('phys-crate');
await settle();
const grab = await json(`__gm.objectRect('phys-crate')`);
const scale = grab.w / 40;
// Below the middle, where the collider's and the rigidbody's icons are not.
const from = { x: grab.x, y: grab.y + grab.h * 0.35 };
const to = { x: from.x, y: from.y - LIFT * scale };
await mouse('mouseMoved', from.x, from.y);
await mouse('mousePressed', from.x, from.y, 'left');
for (let i = 1; i <= 10; i++) {
await mouse('mouseMoved', from.x, from.y + ((to.y - from.y) * i) / 10, 'left', { buttons: 1 });
await sleep(16);
}
const target = REST - LIFT;
const crateY = "__gm.world()?.entities.find((e) => e.objectId === 'phys-crate')?.worldY";
// The last move reaches the body a few frames later: preview, physics step, drawn one step
// behind. Reading right away raced it and caught the ninth move's height (#282).
const arrived = await waitUntil(`Math.abs(${crateY} - ${target}) < 1.5`, {
timeout: 2000,
label: 'the crate reached the pointer',
}).then(
() => true,
() => false,
);
// Every frame recorded in the page, so the count follows the frames and not the round trips.
// The page also stamps the release itself: a stamp taken after the round trip came frames late,
// and the first sample after it was already 7 units into the fall on the WSL runner.
await evaluate(`(() => {
const out = (window.__dragSamples = []);
const sample = () => {
out.push({ t: performance.now(), y: ${crateY} });
if (!window.__dragSamplesDone) requestAnimationFrame(sample);
};
window.__dragSamplesDone = false;
window.__dragLetGo = undefined;
window.addEventListener('pointerup', () => (window.__dragLetGo = performance.now()), {
capture: true,
once: true,
});
requestAnimationFrame(sample);
})()`);
await sleep(1000);
await shot('41-drag-while-playing');
const dragInfo = { grab, selected: (await state()).selection?.objectId };
await mouse('mouseReleased', to.x, to.y, 'left');
await sleep(300);
await evaluate('window.__dragSamplesDone = true');
const dragSamples = await json('window.__dragSamples');
const letGo = await evaluate('window.__dragLetGo');
const log = (await json('__gm.world()'))?.log ?? [];
await stop();
const held = dragSamples.filter((s) => s.t < letGo).map((s) => s.y);
const released = dragSamples.filter((s) => s.t >= letGo);
// 200 ms of free fall from rest is about 25 below the hold, a body let go at speed is not.
const falling = released.filter((s) => s.t - letGo <= 200).map((s) => s.y);
const fell = falling.at(-1);
check(
'a body dragged while playing hangs where the pointer holds it and is let go at rest',
arrived &&
held.length >= 30 &&
held.every((y) => Math.abs(y - target) < 1.5) &&
// Let go it only falls: no jump above the hold, no kick up. How far the first frame after
// the release has already fallen follows the frame time, so that is not a bound here.
falling.every((y, i) => y > target - 1.5 && (i === 0 || y >= falling[i - 1] - 0.01)) &&
fell > target + 1 &&
fell < target + 40 &&
!log.some((line) => line.includes('moved directly')),
JSON.stringify({
target,
arrived,
held: { frames: held.length, first: held[0], last: held.at(-1) },
stamped: typeof letGo === 'number',
released: released.slice(0, 3).map((s) => [Math.round(s.t - letGo), s.y]),
fell,
log,
dragInfo,
}),
);
const bodies = [crateBody?.id, ballBody?.id].filter(Boolean);
await mutate(`
const p = __gm.state.project;
const scene = __gm.state.activeScene;
const gone = new Set(${JSON.stringify(bodies)});
const assets = new Set(scene.objects.filter((o) => gone.has(o.id)).map((o) => o.assetId));
scene.objects = scene.objects.filter((o) => !o.id.startsWith('phys-') && !gone.has(o.id));
p.assets = p.assets.filter((a) => !a.id.startsWith('phys-col-') && !assets.has(a.id));
__gm.state.select(null)`);
// 41c. The graph drives the physics (#147): a crate kicked in On start with gravity switched off
// by Set gravity, and a walker whose Move with "Collide with solids" runs into a free crate.
const hintsBefore = consoleLog.filter((line) => line.includes('[physics]')).length;
await mutate(`
const scene = __gm.state.activeScene;
const p = __gm.state.project;
const assets = p.assets;
${MAKE_OBJECT}
const behavior = (id, name, graph) => {
const asset = structuredClone(assets.find((a) => a.id === 'mover'));
Object.assign(asset, { id, name, props: { enabled: true, runInEditor: false }, variables: [], graph });
assets.push(asset);
};
behavior('phys-kick', 'Physics kick', ${JSON.stringify(kickGraph)});
behavior('phys-walk', 'Physics walk', ${JSON.stringify(walkGraph)});
assets.push({ id: 'phys-col-box', type: 'collider', name: 'phys-col-box', props: { shape: 'box', width: 40, height: 40, radius: 20, isTrigger: false } });
assets.push({ id: 'phys-rb-kicked', type: 'rigidbody', name: 'phys-rb-kicked', props: { bodyType: 'dynamic', mass: ${KICKED_MASS} } });
assets.push({ id: 'phys-rb-free', type: 'rigidbody', name: 'phys-rb-free', props: { bodyType: 'dynamic', mass: 0 } });
const put = (id, assetId, parentId, x, y, name, overrides = {}) => {
const o = make(id, assetId, parentId, y, name);
o.position.x = x;
o.overrides = overrides;
scene.objects.push(o);
};
const box = { width: 40, height: 40 };
put('phys-kicked', 'crate', '', -200, ${Y}, 'Kicked crate', box);
put('phys-kicked-col', 'phys-col-box', 'phys-kicked', 0, 0);
put('phys-kicked-rb', 'phys-rb-kicked', 'phys-kicked', 0, 0);
put('phys-kicked-kick', 'phys-kick', 'phys-kicked', 0, 0);
put('phys-walker', 'crate', '', 0, ${Y + 100}, 'Walker', box);
put('phys-walker-col', 'phys-col-box', 'phys-walker', 0, 0);
put('phys-walker-walk', 'phys-walk', 'phys-walker', 0, 0);
put('phys-pushed', 'crate', '', 60, ${Y + 100}, 'Pushed crate', box);
put('phys-pushed-col', 'phys-col-box', 'phys-pushed', 0, 0);
put('phys-pushed-rb', 'phys-rb-free', 'phys-pushed', 0, 0);
__gm.state.select(null)`);
await play();
// A model event while playing re-reads the scene (CI had one in the first frames): what the run
// set with Set gravity has to outlive it.
await evaluate(`__gm.state.preview()`);
await evaluate(`(() => {
const out = (window.__physicsGraph = []);
const start = performance.now();
const sample = () => {
const w = __gm.world();
if (!w) return;
const at = (id) => w.entities.find((e) => e.objectId === id);
const kicked = at('phys-kicked');
out.push({
t: (performance.now() - start) / 1000,
kickedX: kicked?.worldX,
kickedY: kicked?.worldY,
walker: at('phys-walker')?.worldX,
pushed: at('phys-pushed')?.worldX,
});
if (performance.now() - start < 2000) requestAnimationFrame(sample);
};
requestAnimationFrame(sample);
})()`);
await sleep(2300);
const run = await json('window.__physicsGraph');
await stop();
const at = (seconds) =>
run.reduce((best, s) => (Math.abs(s.t - seconds) < Math.abs(best.t - seconds) ? s : best));
const [early, late] = [at(0.5), at(1.5)];
const glide = (late.kickedX - early.kickedX) / (late.t - early.t);
const speed = KICK / KICKED_MASS;
check(
`Set gravity and Apply impulse in On start: the crate glides straight at impulse ÷ mass (${speed} per second)`,
run.length > 60 &&
Math.abs(glide - speed) < speed * 0.05 &&
run.every((s) => Math.abs(s.kickedY - Y) < 0.5),
JSON.stringify({ frames: run.length, glide: Math.round(glide * 10) / 10, early, late }),
);
const gap = Math.min(...run.map((s) => s.pushed - 20 - (s.walker + 20)));
const pushed = run.at(-1).pushed - 60;
check(
'Move with "Collide with solids" pushes the crate in its way and never gets into it',
pushed > 100 && gap > -0.01,
JSON.stringify({
pushed: Math.round(pushed * 10) / 10,
walked: Math.round(run.at(-1).walker * 10) / 10,
gap,
}),
);
const hints = consoleLog.filter((line) => line.includes('[physics]')).slice(hintsBefore);
check('nothing in the step made the physics hint at a no-op', hints.length === 0, hints.join(' | '));
const clearPhysics = () =>
mutate(`
const p = __gm.state.project;
const scene = __gm.state.activeScene;
scene.objects = scene.objects.filter((o) => !o.id.startsWith('phys-'));
p.assets = p.assets.filter((a) => !a.id.startsWith('phys-'));
__gm.state.select(null)`);
await clearPhysics();
// 41d. Move along the contact normal (#150): a ball walked straight right into the upper-left
// corner of a block, 12 below its centre, rolls up over it instead of hanging on the corner,
// and its graph logs the normal of the first contact from Move's hit / normal outputs.
const edgeLog = consoleLog.length;
await mutate(`
const scene = __gm.state.activeScene;
const assets = __gm.state.project.assets;
${MAKE_OBJECT}
const asset = structuredClone(assets.find((a) => a.id === 'mover'));
Object.assign(asset, { id: 'phys-roll', name: 'Physics roll', props: { enabled: true, runInEditor: false }, variables: [], graph: ${JSON.stringify(rollGraph)} });
assets.push(asset);
assets.push({ id: 'phys-col-ball', type: 'collider', name: 'phys-col-ball', props: { shape: 'circle', width: 40, height: 40, radius: ${BALL_R}, isTrigger: false } });
assets.push({ id: 'phys-col-block', type: 'collider', name: 'phys-col-block', props: { shape: 'box', width: 100, height: 60, radius: 20, isTrigger: false } });
const put = (id, assetId, parentId, x, y, name, overrides = {}) => {
const o = make(id, assetId, parentId, y, name);
o.position.x = x;
o.overrides = overrides;
scene.objects.push(o);
};
put('phys-ball', 'crate', '', 0, ${Y}, 'Rolling ball', { width: 40, height: 40 });
put('phys-ball-col', 'phys-col-ball', 'phys-ball', 0, 0);
put('phys-ball-roll', 'phys-roll', 'phys-ball', 0, 0, 'Roll');
put('phys-block', 'crate', '', 150, ${Y + CORNER_DROP + 30}, 'Edge block', { width: 100, height: 60 });
put('phys-block-col', 'phys-col-block', 'phys-block', 0, 0);
__gm.state.select(null)`);
await play();
await sleep(2000);
const ball = await json(
`(() => { const e = __gm.world()?.entities.find((x) => x.objectId === 'phys-ball'); return e && { x: e.worldX, y: e.worldY }; })()`,
);
await stop();
const top = Y + CORNER_DROP - BALL_R; // the ball's centre when it rolls along the block's top face
check(
'Move rolls a ball up over the edge it runs into, onto the top face',
ball && ball.x > 150 && ball.y <= top + 0.01 && ball.y > top - 3,
JSON.stringify({ ball, top }),
);
const lines = consoleLog.slice(edgeLog).filter((line) => line.startsWith('[behavior '));
const logged = lines
.filter((line) => line.startsWith('[behavior Roll]'))
.map((line) => Number(line.split(']').pop()));
const reach = Math.sqrt(BALL_R ** 2 - CORNER_DROP ** 2);
check(
"Move's hit and normal outputs: the first contact faces from the corner to the ball's centre",
logged.length >= 2 &&
Math.abs(logged[0] + reach / BALL_R) < 1e-6 &&
Math.abs(logged[1] + CORNER_DROP / BALL_R) < 1e-6,
JSON.stringify({
logged: logged.slice(0, 4),
expected: [-reach / BALL_R, -CORNER_DROP / BALL_R],
lines: lines.slice(0, 4),
}),
);
await clearPhysics();
}