99 lines
4.7 KiB
C#
99 lines
4.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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namespace Encompass
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{
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internal class UberEngine : Engine
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{
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private readonly IEnumerable<Type> _componentTypes;
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private readonly IEnumerable<Type> _messageTypes;
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public Entity Entity { get; private set; }
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public UberEngine(IEnumerable<Type> componentTypes, IEnumerable<Type> messageTypes)
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{
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_componentTypes = componentTypes;
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_messageTypes = messageTypes;
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ReadTypes.UnionWith(componentTypes);
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WriteTypes.UnionWith(componentTypes);
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SendTypes.UnionWith(messageTypes);
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ReceiveTypes.UnionWith(messageTypes);
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}
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public void Write()
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{
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Entity = CreateEntity();
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foreach (var type in _componentTypes)
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{
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var instanceParam = new object[] { Entity, Activator.CreateInstance(type) };
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var setComponentMethod = typeof(Engine).GetMethod("SetComponent", BindingFlags.NonPublic | BindingFlags.Instance);
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var genericSetComponentMethod = setComponentMethod.MakeGenericMethod(type);
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genericSetComponentMethod.Invoke(this, instanceParam);
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}
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}
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// we can't reflect invoke on Span returns right now... tragic
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public override void Update(double dt)
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{
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foreach (var type in _componentTypes)
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{
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CallGenericMethod(type, "ReadComponent", null);
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//CallGenericMethod(type, "ReadComponents", null);
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CallGenericMethod(type, "ReadEntity", null);
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//CallGenericMethod(type, "ReadEntities", null);
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CallGenericMethod(type, "GetComponent", new object[] { Entity });
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CallGenericMethod(type, "HasComponent", 1, new object[] { Entity });
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CallGenericMethod(type, "SomeComponent", null);
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CallGenericMethod(type, "DestroyWith", null);
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CallGenericMethod(type, "DestroyAllWith", null);
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CallGenericMethod(type, "RemoveComponent", new object[] { Entity });
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}
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foreach (var type in _messageTypes)
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{
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CallGenericMethod(type, "SendMessageIgnoringTimeDilation", new object[] { Activator.CreateInstance(type), 1 });
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CallGenericMethod(type, "SendMessage", 1, new object[] { Activator.CreateInstance(type) });
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CallGenericMethod(type, "SendMessage", 2, new object[] { Activator.CreateInstance(type), 1 });
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CallGenericMethod(type, "ReadMessage", null);
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//CallGenericMethod(type, "ReadMessages", null);
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CallGenericMethod(type, "SomeMessage", null);
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if (typeof(IHasEntity).IsAssignableFrom(type))
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{
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CallGenericMethod(type, "ReadMessagesWithEntity", new object[] { Entity });
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CallGenericMethod(type, "ReadMessageWithEntity", new object[] { Entity });
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CallGenericMethod(type, "SomeMessageWithEntity", new object[] { Entity });
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}
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}
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}
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// trying to use PrepareMethod because we can't reflect invoke methods that return a span...
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private void CallGenericMethod(Type type, string methodName, object[] parameters)
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{
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var readComponentMethod = typeof(Engine).GetMethod(methodName, BindingFlags.NonPublic | BindingFlags.Instance);
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var genericReadComponentMethod = readComponentMethod.MakeGenericMethod(type);
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genericReadComponentMethod.Invoke(this, parameters);
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// RuntimeHelpers.PrepareMethod(genericReadComponentMethod.MethodHandle);
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}
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private void CallGenericMethod(Type type, string methodName, Type[] types, object[] parameters)
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{
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var readComponentMethod = typeof(Engine).GetMethod(methodName, BindingFlags.NonPublic | BindingFlags.Instance, null, types, null);
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var genericReadComponentMethod = readComponentMethod.MakeGenericMethod(type);
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genericReadComponentMethod.Invoke(this, parameters);
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// RuntimeHelpers.PrepareMethod(genericReadComponentMethod.MethodHandle);
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}
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private void CallGenericMethod(Type type, string methodName, int argumentNum, object[] parameters)
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{
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var method = typeof(Engine).GetRuntimeMethods().Where(m => m.Name == methodName && m.GetParameters().Length == argumentNum).First();
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var genericMethod = method.MakeGenericMethod(type);
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genericMethod.Invoke(this, parameters);
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// RuntimeHelpers.PrepareMethod(genericMethod.MethodHandle);
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}
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}
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}
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