cryptonhym-thunder/Code/Factories/ComponentFactory.cs

using System;
using System.Collections.Generic;
using System.Linq;
using CryptonymThunder.Code.Extensions;
using CryptonymThunder.Code.Resources;
using GameCore.AI;
using GameCore.Attributes;
using GameCore.Combat;
using GameCore.Combat.Interfaces;
using GameCore.ECS.Interfaces;
using GameCore.Input;
using GameCore.Interaction;
using GameCore.Inventory;
using GameCore.Logic;
using GameCore.Movement;
using GameCore.Physics;
using GameCore.Player;
using Godot;

namespace CryptonymThunder.Code.Factories;

public class ComponentFactory
{
    private readonly Dictionary<Type, Func<Resource, IComponent>> _factories = new();
    private readonly EffectFactory _effectFactory;
    private readonly InteractionRequirementFactory _requirementFactory;
    private readonly TriggerActionFactory _triggerActionFactory;

    public ComponentFactory(EffectFactory effectFactory, InteractionRequirementFactory requirementFactory, TriggerActionFactory triggerActionFactory)
    {
        _effectFactory = effectFactory;
        _requirementFactory = requirementFactory;
        _triggerActionFactory = triggerActionFactory;
        
        Register<AttributeComponentResource>(CreateAttributeComponent);
        Register<WeaponComponentResource>(CreateWeaponComponent);
        Register<ProjectileComponentResource>(CreateProjectileComponent);
        Register<PositionComponentResource>(_ => new PositionComponent());
        Register<VelocityComponentResource>(_ => new VelocityComponent());
        Register<InputStateComponentResource>(_ => new InputStateComponent());
        Register<PlayerComponentResource>(_ => new PlayerComponent());
        Register<RotationComponentResource>(_ => new RotationComponent());
        Register<CharacterStateComponentResource>(_ => new CharacterStateComponent());
        Register<InventoryComponentResource>(_ => new InventoryComponent());
        Register<PickupComponentResource>(CreatePickupComponent);
        Register<EquipmentComponentResource>(_ => new EquipmentComponent());
        Register<DoorComponentResource>(CreateDoorComponent);
        Register<WorldIdComponentResource>(res => new WorldIdComponent(res.WorldId));
        Register<ButtonComponentResource>(CreateButtonComponent);
        Register<LogicSequenceComponentResource>(CreateLogicSequenceComponent);
        Register<AIComponentResource>(CreateAIComponent);
        Register<PatrolComponentResource>(CreatePatrolComponent);
    }

    public IComponent Create(Resource resource)
    {
        return _factories.TryGetValue(resource.GetType(), out var factory)
            ? factory(resource)
            : null;
    }

    private void Register<TResource>(Func<TResource, IComponent> factory) where TResource : Resource
    {
        _factories[typeof(TResource)] = res => factory((TResource)res);
    }

    private static AttributeComponent CreateAttributeComponent(AttributeComponentResource resource)
    {
        var component = new AttributeComponent();
        foreach (var (attribute, value) in resource.BaseValues)
        {
            component.SetBaseValue(attribute, value);
        }

        return component;
    }
    
    private WeaponComponent CreateWeaponComponent(WeaponComponentResource resource)
    {
        if (resource.WeaponData == null) return null;
        var weaponData = resource.WeaponData;
        
        var fireCosts = weaponData.FireCosts
            .Select(_effectFactory.Create)
            .OfType<ICostEffect>()
            .ToList();
        var onFireEffects = weaponData.OnFireEffects.Select(_effectFactory.Create).ToList();
        var onHitEffects = weaponData.OnHitEffects.Select(_effectFactory.Create).ToList();

        return new WeaponComponent
        {
            FireRate = resource.WeaponData.FireRate,
            FireCosts = fireCosts,
            OnFireEffects = onFireEffects,
            OnHitEffects = onHitEffects,
        };
    }
    
    private ProjectileComponent CreateProjectileComponent(ProjectileComponentResource resource)
    {
        return new ProjectileComponent
        {
            Lifetime = resource.Lifetime,
        };
    }

    private PickupComponent CreatePickupComponent(PickupComponentResource resource)
    {
        var onAcquireEffects = resource.OnAcquireEffects
            .Select(_effectFactory.Create)
            .ToList();
        
        return new PickupComponent
        {
            ItemId = resource.ItemId,
            Quantity = resource.Quantity,
            IsInstantUse = resource.IsInstantUse,
            OnAcquireEffects = onAcquireEffects,
        };
    }

    private DoorComponent CreateDoorComponent(DoorComponentResource resource)
    {
        var component = new DoorComponent
        {
            CurrentState = resource.InitialState,
            IsOneTimeUnlock = resource.IsOneTimeUnlock,
            OpenSpeed = resource.OpenSpeed,
        };

        foreach (var reqResource in resource.Requirements)
        {
            var requirement = _requirementFactory.Create(reqResource);
            if (requirement != null)
            {
                component.Requirements.Add(requirement);
            }
        }
        
        return component;
    }

    private ButtonComponent CreateButtonComponent(ButtonComponentResource resource)
    {
        var component = new ButtonComponent
        {
            ChannelId = resource.ChannelId,
            IsToggle = resource.IsToggle,
            IsOneTimeUse = resource.IsOneTimeUse,
            IsPressed = false,
            HasBeenUsed = false,
        };

        foreach (var reqResource in resource.Requirements)
        {
            var requirement = _requirementFactory.Create(reqResource);
            if (requirement != null)
            {
                component.Requirements.Add(requirement);
            }
        }
        
        return component;
    }
    
    private LogicSequenceComponent CreateLogicSequenceComponent(LogicSequenceComponentResource resource)
    {
        var component = new LogicSequenceComponent
        {
            RequiredChannels = resource.RequiredChannels.ToList(),
            IsOneTimeTrigger = resource.IsOneTimeTrigger,
        };

        foreach (var actionResource in resource.OnActivateActions)
        {
            var action = _triggerActionFactory.Create(actionResource);
            if (action != null)
            {
                component.OnActivateActions.Add(action);
            }
        }
        
        foreach (var actionResource in resource.OnDeactivateActions)
        {
            var action = _triggerActionFactory.Create(actionResource);
            if (action != null)
            {
                component.OnDeactivateActions.Add(action);
            }
        }
        
        return component;
    }

    private AIComponent CreateAIComponent(AIComponentResource resource)
    {
        return new AIComponent
        {
            CurrentState = resource.InitialState,
            SightRange = resource.SightRange,
            FieldOfView = resource.FieldOfView,
            AttackRange = resource.AttackRange,
            ChaseGiveUpTime = resource.ChaseGiveUpTime,
            ReactionTime = resource.ReactionTime,
        };
    }

    private PatrolComponent CreatePatrolComponent(PatrolComponentResource resource)
    {
        return new PatrolComponent
        {
            IsLooping = resource.IsLooping,
        };
    }
}