94 lines
2.9 KiB
C#
94 lines
2.9 KiB
C#
using System.Collections.Generic;
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using Content.Server.Camera;
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using Content.Shared.Gravity;
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using Robust.Server.Player;
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using Robust.Shared.Audio;
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using Robust.Shared.GameObjects;
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using Robust.Shared.IoC;
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using Robust.Shared.Map;
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using Robust.Shared.Maths;
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using Robust.Shared.Player;
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using Robust.Shared.Random;
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namespace Content.Server.Gravity.EntitySystems
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{
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/// <summary>
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/// Handles the grid shake effect used by the gravity generator.
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/// </summary>
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public sealed class GravityShakeSystem : EntitySystem
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{
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[Dependency] private readonly IPlayerManager _playerManager = default!;
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[Dependency] private readonly IRobustRandom _random = default!;
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private Dictionary<GridId, uint> _gridsToShake = new();
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private const float GravityKick = 100.0f;
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private const uint ShakeTimes = 10;
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private float _internalTimer;
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public override void Update(float frameTime)
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{
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if (_gridsToShake.Count > 0)
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{
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_internalTimer += frameTime;
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if (_internalTimer > 0.2f)
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{
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// TODO: Could just have clients do this themselves via event and save bandwidth.
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ShakeGrids();
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_internalTimer -= 0.2f;
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}
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}
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else
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{
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_internalTimer = 0.0f;
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}
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}
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public void ShakeGrid(GridId gridId, GravityComponent comp)
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{
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_gridsToShake[gridId] = ShakeTimes;
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SoundSystem.Play(
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Filter.BroadcastGrid(gridId),
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comp.GravityShakeSound.GetSound(),
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AudioParams.Default.WithVolume(-2f));
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}
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private void ShakeGrids()
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{
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// I have to copy this because C# doesn't allow changing collections while they're
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// getting enumerated.
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var gridsToShake = new Dictionary<GridId, uint>(_gridsToShake);
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foreach (var gridId in _gridsToShake.Keys)
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{
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if (_gridsToShake[gridId] == 0)
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{
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gridsToShake.Remove(gridId);
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continue;
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}
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ShakeGrid(gridId);
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gridsToShake[gridId] -= 1;
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}
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_gridsToShake = gridsToShake;
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}
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private void ShakeGrid(GridId gridId)
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{
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foreach (var player in _playerManager.Sessions)
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{
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if (player.AttachedEntity == null
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|| IoCManager.Resolve<IEntityManager>().GetComponent<TransformComponent>(player.AttachedEntity).GridID != gridId
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|| !IoCManager.Resolve<IEntityManager>().TryGetComponent(player.AttachedEntity, out CameraRecoilComponent? recoil))
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{
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continue;
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}
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recoil.Kick(new Vector2(_random.NextFloat(), _random.NextFloat()) * GravityKick);
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}
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}
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}
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}
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