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Fix cast_motion sometimes failing

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- Fixes Godot physics failing when the cast Shape is inside of, or
already colliding with another Shape.
- Fixes Bullet physics failing when there is no motion.
- Ensures Godot and Bullet physics behave the same.
- Updates the documentation to exclude the caveats for the failures and
differences.
This commit is contained in:
Marcel Admiraal
2020-11-27 14:33:10 +00:00
parent e5ff2d0ffd
commit 356a2b7235
5 changed files with 13 additions and 9 deletions
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4
modules/bullet/space_bullet.cpp
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@@ -177,8 +177,10 @@ bool BulletPhysicsDirectSpaceState::cast_motion(const RID &p_shape, const Transf
bt_xform_to.getOrigin() += bt_motion;
if ((bt_xform_to.getOrigin() - bt_xform_from.getOrigin()).fuzzyZero()) {
r_closest_safe = 1.0f;
r_closest_unsafe = 1.0f;
bulletdelete(btShape);
return false;
return true;
}
GodotClosestConvexResultCallback btResult(bt_xform_from.getOrigin(), bt_xform_to.getOrigin(), &p_exclude, p_collide_with_bodies, p_collide_with_areas);