85 lines
2.3 KiB
C#
85 lines
2.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Numerics;
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using System.Runtime.InteropServices;
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namespace Ougge;
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[StructLayout(LayoutKind.Sequential)]
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public struct Transform
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{
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Vector2 scale;
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Vector2 position;
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float rotation;
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}
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public class GameObject
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{
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// index in GameObjectPool
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private ulong _id;
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private uint _index;
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private bool _isDestroyed;
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public ulong Id => _id;
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public bool IsDestroyed => _isDestroyed;
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public Transform Transform { get; }
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public GameObject? Parent;
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public Dictionary<Type, Component> Components;
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private GameObject(ulong id, uint nativePoolIndex)
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{
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_id = id;
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_index = nativePoolIndex;
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// Do not move this line or mono runtime will throw SEGFAULT.
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// Mono runtime can't set values in field declaration, but initializing everything in constructor is OK.
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Components = new();
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}
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static public GameObject Create()
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{
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NativeMethods.createGameObject(out ulong id, out uint index);
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var o = new GameObject(id, index);
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return o;
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}
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public void Destroy()
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{
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if(_isDestroyed)
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return;
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_isDestroyed = NativeMethods.destroyGameObject(_index);
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if(!_isDestroyed)
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throw new Exception($"Can't destroy GameObject({_id})");
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}
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/// <param name="t">type derived from Component</param>
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/// <returns>true if new component instance was created, false if component of the same tipe is already added to GameObject</returns>
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/// <exception cref="Exception"></exception>
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public bool TryCreateComponent(Type t)
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{
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if(!t.IsSubclassOf(typeof(Component)))
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throw new Exception($"type {t.FullName} is not a derived class of {typeof(Component).FullName}");
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if(Components.ContainsKey(t))
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return false;
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Components.Add(t, (Component)Activator.CreateInstance(t, this));
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return true;
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}
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private bool TryCreateComponent_internal(string fullName)
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{
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Type t = Type.GetType(fullName) ?? throw new Exception($"type not found '{fullName}'");
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return TryCreateComponent(t);
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}
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private void InvokeUpdate(double deltaTime)
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{
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foreach(var p in Components)
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{
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p.Value.Update(deltaTime);
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}
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}
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}
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