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Add some physics helpers (#4946)

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Thought I had these but couldn't find them.
This commit is contained in:
metalgearsloth
2024-03-11 02:05:50 +11:00
committed by GitHub
parent 5686950421
commit 1ef29ae781
1 changed files with 68 additions and 0 deletions
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68
Robust.Shared/Physics/Systems/SharedPhysicsSystem.Fixtures.cs
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@@ -73,6 +73,74 @@ public abstract partial class SharedPhysicsSystem
#region Collision Masks & Layers
/// <summary>
/// Similar to IsHardCollidable but also checks whether both entities are set to CanCollide
/// </summary>
public bool IsCurrentlyHardCollidable(Entity<FixturesComponent?, PhysicsComponent?> bodyA, Entity<FixturesComponent?, PhysicsComponent?> bodyB)
{
if (!_fixturesQuery.Resolve(bodyA, ref bodyA.Comp1, false) ||
!_fixturesQuery.Resolve(bodyB, ref bodyB.Comp1, false) ||
!PhysicsQuery.Resolve(bodyA, ref bodyA.Comp2, false) ||
!PhysicsQuery.Resolve(bodyA, ref bodyB.Comp2, false))
{
return false;
}
if (!bodyA.Comp2.CanCollide ||
!bodyB.Comp2.CanCollide)
{
return false;
}
return IsHardCollidable(bodyA, bodyB);
}
/// <summary>
/// Returns true if both entities are hard-collidable with each other.
/// </summary>
public bool IsHardCollidable(Entity<FixturesComponent?, PhysicsComponent?> bodyA, Entity<FixturesComponent?, PhysicsComponent?> bodyB)
{
if (!_fixturesQuery.Resolve(bodyA, ref bodyA.Comp1, false) ||
!_fixturesQuery.Resolve(bodyB, ref bodyB.Comp1, false) ||
!PhysicsQuery.Resolve(bodyA, ref bodyA.Comp2, false) ||
!PhysicsQuery.Resolve(bodyA, ref bodyB.Comp2, false))
{
return false;
}
// Fast check
if (!bodyA.Comp2.Hard ||
!bodyB.Comp2.Hard ||
((bodyA.Comp2.CollisionLayer & bodyB.Comp2.CollisionMask) == 0x0 &&
(bodyA.Comp2.CollisionMask & bodyB.Comp2.CollisionLayer) == 0x0))
{
return false;
}
// Slow check
foreach (var fix in bodyA.Comp1.Fixtures.Values)
{
if (!fix.Hard)
continue;
foreach (var other in bodyB.Comp1.Fixtures.Values)
{
if (!other.Hard)
continue;
if ((fix.CollisionLayer & other.CollisionMask) == 0x0 &&
(fix.CollisionMask & other.CollisionLayer) == 0x0)
{
continue;
}
return true;
}
}
return false;
}
public void AddCollisionMask(EntityUid uid, string fixtureId, Fixture fixture, int mask, FixturesComponent? manager = null, PhysicsComponent? body = null)
{
if ((fixture.CollisionMask & mask) == mask) return;