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fix(physics): push keeps the old collider contract exactly - a thing wholly under the feet or over the head is not in the way, anything else pushes out sideways (Jolt's axis when side-on, else radially by the overlap across)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-27 00:08:36 +03:00
parent 28c54e4b39
commit d4fc9bbb91
6 changed files with 36 additions and 15 deletions
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9
packages/ludic.physics/tests/physics_test.ludic
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@ -111,25 +111,24 @@ program PhysicsTest {
phys_close(physics_st)
}
test "a body is resolved clear of a post, and standing on a rock is not being in it" (physics_st: mut PhysicsState) {
test "a body is resolved clear of a post; a low rock blocks from the ground and not once stood on" (physics_st: mut PhysicsState) {
ground(physics_st)
let post = phys_offset(physics_st, phys_cylinder(physics_st, 1.0, 0.3), 0.0, 1.0, 0.0, 0.0)
phys_static_add(physics_st, post, 0.0, 0.0, 0.0, 0.0)
let rock = phys_offset(physics_st, phys_cylinder(physics_st, 0.2, 1.0), 0.0, 0.2, 0.0, 0.0)
phys_static_add(physics_st, rock, 5.0, 0.0, 0.0, 0.0)
phys_static_add(physics_st, phys_dome(physics_st, 1.5, 0.6), -5.0, 0.0, 0.0, 0.0)
phys_settle(physics_st)
expect(phys_resolve(physics_st, 0.4, 0.1, 0.35, 0.0, 1.8, PHYS_M_STATIC))
let dx = phys_resolved_x(physics_st)
let dz = phys_resolved_z(physics_st)
expect(Math.sqrt(dx * dx + dz * dz) > 0.64)
expect(phys_resolve(physics_st, 5.2, 0.0, 0.35, 0.0, 1.8, PHYS_M_STATIC))
expect(phys_resolved_x(physics_st) > 6.34)
expect(not phys_resolve(physics_st, 5.2, 0.0, 0.35, 0.4, 2.2, PHYS_M_STATIC))
expect_eq(phys_resolved_x(physics_st), 5.2)
expect(phys_resolve(physics_st, 6.3, 0.0, 0.35, 0.0, 1.8, PHYS_M_STATIC))
expect(phys_resolved_x(physics_st) > 6.34)
let top = phys_step_top(physics_st, -5.3, 0.0, 0.35, 0.0, 0.7, PHYS_M_STATIC)
expect(top > 0.4)
expect(not phys_resolve(physics_st, -5.3, 0.0, 0.35, top, top + 1.8, PHYS_M_STATIC))
expect(not phys_resolve(physics_st, 5.0, 3.0, 0.35, 0.0, 1.8, PHYS_M_STATIC))
phys_close(physics_st)
}
}