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feat(physics): phys_step_top - the highest top a foot could step up to, walls left out (what CharacterGround.top_at asks)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-26 23:43:40 +03:00
parent 204ec93c5a
commit 1c814464c5
5 changed files with 66 additions and 2 deletions
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16
packages/ludic.physics/tests/physics_test.ludic
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@ -94,4 +94,20 @@ program PhysicsTest {
expect_eq(clear.n, 0)
phys_close(physics_st)
}
test "a step's top counts, a wall's does not, and the step beside a wall still does" (physics_st: mut PhysicsState) {
ground(physics_st)
let step = phys_offset(physics_st, phys_cylinder(physics_st, 0.15, 0.8), 0.0, 0.15, 0.0, 0.0)
let wall = phys_offset(physics_st, phys_cylinder(physics_st, 1.5, 0.8), 0.0, 1.5, 0.0, 0.0)
phys_static_add(physics_st, step, 0.0, 0.0, 0.0, 0.0)
phys_static_add(physics_st, wall, 1.5, 0.0, 0.0, 0.0)
phys_static_add(physics_st, wall, 5.0, 0.0, 0.0, 0.0)
phys_settle(physics_st)
expect(Math.abs(phys_step_top(physics_st, 0.0, 0.0, 0.35, 0.0, 0.55, PHYS_M_STATIC) - 0.3) < 0.02)
expect(Math.abs(phys_step_top(physics_st, 0.6, 0.0, 0.35, 0.0, 0.55, PHYS_M_STATIC) - 0.3) < 0.02)
expect(phys_step_top(physics_st, 5.0, 0.0, 0.35, 0.0, 0.55, PHYS_M_STATIC) == PHYS_NONE)
expect(phys_step_top(physics_st, -5.0, 0.0, 0.35, 0.0, 0.55, PHYS_M_STATIC) == PHYS_NONE)
expect(Math.abs(phys_step_top(physics_st, 5.0, 0.0, 0.35, 2.9, 0.55, PHYS_M_STATIC) - 3.0) < 0.02)
phys_close(physics_st)
}
}