c01ec294d0
* Push 1 * cleanup + master merge * launchontrigger * A crumb of cleanup --------- Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>
32 lines
1.5 KiB
C#
32 lines
1.5 KiB
C#
using System.Numerics;
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using Content.Shared.Trigger.Components.Effects;
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using Robust.Shared.Physics.Components;
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using Robust.Shared.Physics.Systems;
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namespace Content.Shared.Trigger.Systems;
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public sealed class LaunchOnTriggerSystem : XOnTriggerSystem<LaunchOnTriggerComponent>
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{
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[Dependency] private readonly SharedTransformSystem _transform = default!;
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[Dependency] private readonly SharedPhysicsSystem _physics = default!;
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protected override void OnTrigger(Entity<LaunchOnTriggerComponent> ent, EntityUid target, ref TriggerEvent args)
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{
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if (!TryComp(target, out PhysicsComponent? phys))
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return;
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var linearVelocity = _physics.GetMapLinearVelocity(target);
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// If the linear velocity is length 0, this means it's not moving. Given we want to move it in some direction...
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if (linearVelocity.IsLengthZero())
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// An object that isn't moving is launched in the direction its facing, not the direction it's rotated (objects face away from their rotation).
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linearVelocity = _transform.GetWorldRotation(target).RotateVec(Vector2.UnitY) * -1;
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// When triggered, take the direction the target is moving in (the normalized vector) and multiply it by the speed.
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// Then apply an impulse to the target on the new vector.
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// (If the target is moving NE at 10 m/s, this impulses it NE at speed m/s)
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_physics.ApplyLinearImpulse(target, linearVelocity.Normalized() * ent.Comp.Impulse, body: phys);
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args.Handled = true;
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}
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}
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