riversong-code-showcase/Source/Riversong/Game/Audio/PlaySoundOnEventSystem.cs

using System;
using System.Collections.Generic;
using Cysharp.Threading.Tasks;
using Unity.Mathematics;
using Time = UnityEngine.Time;

namespace DanieleMarotta.RiversongCodeShowcase
{
    public class PlaySoundOnEventSystem : GameSystem, IInitializable, IDisposable
    {
        [InjectService]
        private ISoundPlayer _soundPlayer;

        [InjectService]
        private ISignalBus _signalBus;

        [InjectService]
        private IGameDatabase _gameDatabase;

        [InjectService]
        private ITileSpace _tileSpace;

        private Dictionary<int, float> _soundPlayedTimestamps = new();

        public PlaySoundOnEventSystem(IServiceLocator serviceLocator) : base(serviceLocator)
        {
        }

        public UniTask InitializeAsync()
        {
            _signalBus.Subscribe<BuildingPlacementAnimationCompletedSignal>(OnBuildingPlacementAnimationCompleted);
            _signalBus.Subscribe<ConstructionSiteDeletedSignal>(OnConstructionSiteDeleted);
            _signalBus.Subscribe<BuildingDeletedSignal>(OnBuildingDeleted);
            _signalBus.Subscribe<BuildingUpgradedSignal>(OnBuildingUpgraded);
            _signalBus.Subscribe<RawResourcesRemovedSignal>(OnRawResourcesRemoved);
            _signalBus.Subscribe<RoadTileUpdatedSignal>(OnRoadTileUpdated);
            _signalBus.Subscribe<BuildMenuButtonUnlockAnimationStartedSignal>(OnBuildMenuButtonUnlockAnimationStarted);

            return UniTask.CompletedTask;
        }

        public void Dispose()
        {
            _signalBus.Unsubscribe<BuildingPlacementAnimationCompletedSignal>(OnBuildingPlacementAnimationCompleted);
            _signalBus.Unsubscribe<ConstructionSiteDeletedSignal>(OnConstructionSiteDeleted);
            _signalBus.Unsubscribe<BuildingDeletedSignal>(OnBuildingDeleted);
            _signalBus.Unsubscribe<BuildingUpgradedSignal>(OnBuildingUpgraded);
            _signalBus.Unsubscribe<RawResourcesRemovedSignal>(OnRawResourcesRemoved);
            _signalBus.Unsubscribe<RoadTileUpdatedSignal>(OnRoadTileUpdated);
            _signalBus.Unsubscribe<BuildMenuButtonUnlockAnimationStartedSignal>(OnBuildMenuButtonUnlockAnimationStarted);
        }

        private bool UpdatePlayedTimestamp(int key)
        {
            var timestamp = _soundPlayedTimestamps.GetValueOrDefault(key);

            const float minInterval = 0.1f;
            if (Time.unscaledTime - timestamp < minInterval) return false;

            _soundPlayedTimestamps[key] = Time.unscaledTime;

            return true;
        }

        private void OnBuildingPlacementAnimationCompleted(BuildingPlacementAnimationCompletedSignal signal)
        {
            PlaySystemSound(SystemSoundId.BuildingPlaced);
        }

        private void OnConstructionSiteDeleted(ConstructionSiteDeletedSignal signal)
        {
            PlaySystemSound(SystemSoundId.BuildingDeleted);
        }

        private void OnBuildingDeleted(BuildingDeletedSignal signal)
        {
            if (signal.Options == DeleteBuildingOptions.Silent) return;

            PlaySystemSound(SystemSoundId.BuildingDeleted);
        }

        private void OnBuildingUpgraded(BuildingUpgradedSignal signal)
        {
            if (!signal.Building.Definition.IsHouse || !UpdatePlayedTimestamp((int)SystemSoundId.HouseUpgraded)) return;

            var position = (float3)_tileSpace.GetRectWorldCenter(signal.Building.Rect);
            _soundPlayer.PlayAt(SystemSoundId.HouseUpgraded, position);
        }

        private void OnRawResourcesRemoved(RawResourcesRemovedSignal signal)
        {
            foreach (var resourceNode in signal.ResourceNodes)
            {
                var definition = _gameDatabase.WithId<ResourceNodeDefinition>(resourceNode.DefinitionId);

                if (!UpdatePlayedTimestamp(definition.RuntimeId)) continue;

                if (signal.Reason == RawResourcesRemovedSignal.RemovalReason.Harvested)
                    _soundPlayer.PlayAt(definition.DeleteAudio, resourceNode.Tile);
                else
                    _soundPlayer.Play(definition.DeleteAudio);
            }
        }

        private void OnRoadTileUpdated(RoadTileUpdatedSignal signal)
        {
            PlaySystemSound(signal.RoadTileAdded ? SystemSoundId.RoadTilePlaced : SystemSoundId.RoadTileDeleted);
        }

        private void OnBuildMenuButtonUnlockAnimationStarted(BuildMenuButtonUnlockAnimationStartedSignal signal)
        {
            PlaySystemSound(SystemSoundId.UnlockNotification);
        }

        private void PlaySystemSound(SystemSoundId soundId)
        {
            if (UpdatePlayedTimestamp((int)soundId)) _soundPlayer.Play(soundId);
        }
    }
}