encompass-cs/test/EngineTest.cs

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using NUnit.Framework;
using FluentAssertions;
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using Encompass;
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using System;
using System.Linq;
using System.Collections.Generic;
using Encompass.Exceptions;
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namespace Tests
{
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struct MockComponent : IComponent
{
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public int myInt;
public string myString;
}
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public class EngineTest
{
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static List<MockComponent> resultComponents;
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static MockComponent resultComponent;
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static List<MockMessage> resultMessages = new List<MockMessage>();
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[Reads(typeof(MockComponent))]
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public class ReadComponentsTestEngine : Engine
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{
public override void Update(double dt)
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{
resultComponents = ReadComponents<MockComponent>().ToList();
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}
}
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static List<(MockComponent, Entity)> resultComponentsIncludingEntity;
static (MockComponent, Entity) resultComponentIncludingEntity;
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[Reads(typeof(MockComponent))]
public class ReadComponentsIncludingEntityEngine : Engine
{
public override void Update(double dt)
{
resultComponentsIncludingEntity = ReadComponentsIncludingEntity<MockComponent>().ToList();
}
}
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[Reads(typeof(MockComponent))]
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public class ReadComponentTestEngine : Engine
{
public override void Update(double dt)
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{
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resultComponent = ReadComponent<MockComponent>();
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}
}
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[Reads(typeof(MockComponent))]
public class ReadComponentIncludingEntityEngine : Engine
{
public override void Update(double dt)
{
resultComponentIncludingEntity = ReadComponentIncludingEntity<MockComponent>();
}
}
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[Test]
public void ReadComponents()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadComponentsTestEngine());
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var entity = worldBuilder.CreateEntity();
var entityB = worldBuilder.CreateEntity();
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MockComponent mockComponent;
mockComponent.myInt = 0;
mockComponent.myString = "hello";
MockComponent mockComponentB;
mockComponentB.myInt = 1;
mockComponentB.myString = "howdy";
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worldBuilder.SetComponent(entity, mockComponent);
worldBuilder.SetComponent(entityB, mockComponentB);
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var world = worldBuilder.Build();
world.Update(0.01f);
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resultComponents.Should().Contain(mockComponent);
resultComponents.Should().Contain(mockComponentB);
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}
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[Test]
public void ReadComponentsIncludingEntity()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadComponentsIncludingEntityEngine());
var entity = worldBuilder.CreateEntity();
var entityB = worldBuilder.CreateEntity();
MockComponent mockComponent;
mockComponent.myInt = 0;
mockComponent.myString = "hello";
MockComponent mockComponentB;
mockComponentB.myInt = 1;
mockComponentB.myString = "howdy";
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worldBuilder.SetComponent(entity, mockComponent);
worldBuilder.SetComponent(entityB, mockComponentB);
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var world = worldBuilder.Build();
world.Update(0.01f);
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var resultComponentValues = resultComponentsIncludingEntity.Select((kv) => kv.Item1);
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resultComponentValues.Should().Contain(mockComponent);
resultComponentValues.Should().Contain(mockComponentB);
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var resultEntities = resultComponentsIncludingEntity.Select((kv) => kv.Item2);
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resultEntities.Should().Contain(entity);
resultEntities.Should().Contain(entityB);
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resultComponentsIncludingEntity.Should().Contain((mockComponent, entity));
resultComponentsIncludingEntity.Should().Contain((mockComponentB, entityB));
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}
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[Test]
public void ReadComponent()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadComponentTestEngine());
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var entity = worldBuilder.CreateEntity();
MockComponent mockComponent;
mockComponent.myInt = 0;
mockComponent.myString = "hello";
worldBuilder.SetComponent(entity, mockComponent);
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var world = worldBuilder.Build();
world.Update(0.01f);
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Assert.AreEqual(mockComponent, resultComponent);
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}
[Test]
public void ReadComponentWhenMultipleComponents()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadComponentTestEngine());
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var entity = worldBuilder.CreateEntity();
var entityB = worldBuilder.CreateEntity();
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MockComponent mockComponent;
mockComponent.myInt = 0;
mockComponent.myString = "hello";
MockComponent mockComponentB;
mockComponentB.myInt = 1;
mockComponentB.myString = "howdy";
worldBuilder.SetComponent(entity, mockComponent);
worldBuilder.SetComponent(entityB, mockComponentB);
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var world = worldBuilder.Build();
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world.Update(0.01);
Assert.That(resultComponent, Is.EqualTo(mockComponent).Or.EqualTo(mockComponentB));
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}
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[Test]
public void ReadComponentWithEntity()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadComponentIncludingEntityEngine());
var entity = worldBuilder.CreateEntity();
MockComponent mockComponent;
mockComponent.myInt = 0;
mockComponent.myString = "hello";
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worldBuilder.SetComponent(entity, mockComponent);
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var world = worldBuilder.Build();
world.Update(0.01f);
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(mockComponent, entity).Should().BeEquivalentTo(resultComponentIncludingEntity);
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}
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[Reads(typeof(MockComponent))]
[Writes(typeof(MockComponent))]
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public class UpdateComponentTestEngine : Engine
{
public override void Update(double dt)
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{
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var (component, entity) = ReadComponentIncludingEntity<MockComponent>();
component.myInt = 420;
component.myString = "blaze it";
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SetComponent(entity, component);
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}
}
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// this test needs to be improved...
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[Test]
public void UpdateComponent()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new UpdateComponentTestEngine());
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worldBuilder.AddEngine(new ReadComponentTestEngine());
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var entity = worldBuilder.CreateEntity();
MockComponent mockComponent;
mockComponent.myInt = 0;
mockComponent.myString = "hello";
worldBuilder.SetComponent(entity, mockComponent);
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var world = worldBuilder.Build();
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world.Update(0.01);
world.Update(0.01);
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Assert.AreEqual(420, resultComponent.myInt);
Assert.AreEqual("blaze it", resultComponent.myString);
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}
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[Reads(typeof(MockComponent))]
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public class UndeclaredUpdateComponentTestEngine : Engine
{
public override void Update(double dt)
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{
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var (component, entity) = ReadComponentIncludingEntity<MockComponent>();
component.myInt = 420;
component.myString = "blaze it";
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SetComponent(entity, component);
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component = ReadComponent<MockComponent>();
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}
}
[Test]
public void UpdateUndeclaredComponent()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new UndeclaredUpdateComponentTestEngine());
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var entity = worldBuilder.CreateEntity();
MockComponent mockComponent;
mockComponent.myInt = 0;
mockComponent.myString = "hello";
worldBuilder.SetComponent(entity, mockComponent);
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var world = worldBuilder.Build();
var ex = Assert.Throws<IllegalWriteException>(() => world.Update(0.01f));
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Assert.That(ex.Message, Is.EqualTo("Engine UndeclaredUpdateComponentTestEngine tried to update undeclared Component MockComponent"));
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}
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struct MockMessage : IMessage
{
public string myString;
}
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[Sends(typeof(MockMessage))]
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public class MessageEmitEngine : Engine
{
public override void Update(double dt)
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{
MockMessage message;
message.myString = "howdy";
this.SendMessage(message);
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}
}
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[Receives(typeof(MockMessage))]
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public class MessageReadEngine : Engine
{
public override void Update(double dt)
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{
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resultMessages = this.ReadMessages<MockMessage>().ToList();
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}
}
[Test]
public void EmitAndReadMessage()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new MessageEmitEngine());
worldBuilder.AddEngine(new MessageReadEngine());
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var world = worldBuilder.Build();
world.Update(0.01f);
Assert.AreEqual(resultMessages.First().myString, "howdy");
}
public class UndeclaredMessageEmitEngine : Engine
{
public override void Update(double dt)
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{
MockMessage message;
message.myString = "howdy";
this.SendMessage(message);
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}
}
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static IEnumerable<MockMessage> emptyReadMessagesResult;
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[Receives(typeof(MockMessage))]
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class ReadMessagesWhenNoneExistEngine : Engine
{
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public override void Update(double dt)
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{
emptyReadMessagesResult = ReadMessages<MockMessage>();
}
}
[Test]
public void ReadMessagesWhenNoneHaveBeenEmitted()
{
var worldBuilder = new WorldBuilder();
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worldBuilder.AddEngine(new ReadMessagesWhenNoneExistEngine());
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var world = worldBuilder.Build();
world.Update(0.01f);
emptyReadMessagesResult.Should().BeEmpty();
}
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[Test]
public void EmitUndeclaredMessage()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new UndeclaredMessageEmitEngine());
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var world = worldBuilder.Build();
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var ex = Assert.Throws<IllegalSendException>(() => world.Update(0.01f));
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Assert.That(ex.Message, Is.EqualTo("Engine UndeclaredMessageEmitEngine tried to send undeclared Message MockMessage"));
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}
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static bool someTest;
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[Sends(typeof(MockMessage))]
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class EmitMockMessageEngine : Engine
{
public override void Update(double dt)
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{
MockMessage message;
message.myString = "howdy";
this.SendMessage(message);
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}
}
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[Receives(typeof(MockMessage))]
class SomeMessageTestEngine : Engine
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{
public override void Update(double dt)
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{
someTest = this.SomeMessage<MockMessage>();
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}
}
[Test]
public void SomeMessage()
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{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new EmitMockMessageEngine());
worldBuilder.AddEngine(new SomeMessageTestEngine());
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var world = worldBuilder.Build();
world.Update(0.01f);
Assert.That(someTest, Is.True);
}
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class UndeclaredSomeMessageEngine : Engine
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{
public override void Update(double dt)
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{
someTest = this.SomeMessage<MockMessage>();
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}
}
[Test]
public void UndeclaredSomeMessage()
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{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new EmitMockMessageEngine());
worldBuilder.AddEngine(new UndeclaredSomeMessageEngine());
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var world = worldBuilder.Build();
Assert.Throws<IllegalReadException>(() => world.Update(0.01f));
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}
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class SomeComponentTestEngine : Engine
{
public override void Update(double dt)
{
Assert.IsTrue(SomeComponent<MockComponent>());
}
}
[Test]
public void SomeComponent()
{
var worldBuilder = new WorldBuilder();
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent());
var world = worldBuilder.Build();
world.Update(0.01);
}
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static (MockComponent, Entity) pairA;
static (MockComponent, Entity) pairB;
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[Reads(typeof(MockComponent))]
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class SameValueComponentReadEngine : Engine
{
public override void Update(double dt)
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{
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var components = ReadComponentsIncludingEntity<MockComponent>();
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pairA = components.First();
pairB = components.Last();
}
}
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// Tests that components with identical values should be distinguishable by their entities
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[Test]
public void SameValueComponents()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new SameValueComponentReadEngine());
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MockComponent componentA;
componentA.myInt = 20;
componentA.myString = "hello";
MockComponent componentB;
componentB.myInt = 20;
componentB.myString = "hello";
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, componentA);
var entityB = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entityB, componentB);
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var world = worldBuilder.Build();
world.Update(0.01f);
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Assert.That(EngineTest.pairA, Is.Not.EqualTo(EngineTest.pairB));
Assert.That(EngineTest.pairA.Item1, Is.EqualTo(EngineTest.pairB.Item1));
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}
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static IEnumerable<(MockComponent, Entity)> emptyComponentReadResult;
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[Reads(typeof(MockComponent))]
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class ReadEmptyMockComponentsEngine : Engine
{
public override void Update(double dt)
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{
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emptyComponentReadResult = ReadComponentsIncludingEntity<MockComponent>();
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}
}
[Test]
public void ReadComponentsOfTypeWhereNoneExist()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadEmptyMockComponentsEngine());
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var world = worldBuilder.Build();
world.Update(0.01f);
Assert.That(emptyComponentReadResult, Is.Empty);
}
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struct DestroyerComponent : IComponent { }
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[Reads(typeof(DestroyerComponent))]
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class DestroyerEngine : Engine
{
public override void Update(double dt)
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{
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foreach (var (component, entity) in ReadComponentsIncludingEntity<DestroyerComponent>())
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{
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Destroy(entity);
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}
}
}
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static List<(MockComponent, Entity)> results;
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[Reads(typeof(MockComponent))]
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class ReaderEngine : Engine
{
public override void Update(double dt)
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{
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results = ReadComponentsIncludingEntity<MockComponent>().ToList();
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}
}
[Test]
public void DestroyEntity()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new DestroyerEngine());
worldBuilder.AddEngine(new ReaderEngine());
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var entity = worldBuilder.CreateEntity();
var entityB = worldBuilder.CreateEntity();
var entityC = worldBuilder.CreateEntity();
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DestroyerComponent destroyerComponent;
MockComponent mockComponent;
mockComponent.myInt = 2;
mockComponent.myString = "blah";
worldBuilder.SetComponent(entity, destroyerComponent);
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worldBuilder.SetComponent(entity, mockComponent);
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worldBuilder.SetComponent(entityB, destroyerComponent);
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worldBuilder.SetComponent(entityB, mockComponent);
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worldBuilder.SetComponent(entityC, mockComponent);
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var world = worldBuilder.Build();
world.Update(0.01);
world.Update(0.01);
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Assert.That(results, Does.Not.Contain((mockComponent, entity)));
Assert.That(results, Does.Not.Contain((mockComponent, entity)));
Assert.That(results, Does.Contain((mockComponent, entityC)));
}
[Receives(typeof(DestroyComponentMessage))]
class DestroyEntityEngine : Engine
{
public override void Update(double dt)
{
foreach (var message in ReadMessages<DestroyComponentMessage>())
{
Destroy(message.entity);
}
}
}
[Test]
public void DestroyEntityWithoutID()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new AddComponentEngine());
worldBuilder.AddEngine(new DestroyEntityEngine());
worldBuilder.AddEngine(new ReaderEngine());
var mockComponent = new MockComponent { };
var entity = worldBuilder.CreateEntity();
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worldBuilder.SetComponent(entity, mockComponent);
worldBuilder.SendMessage(new DestroyComponentMessage { entity = entity });
var world = worldBuilder.Build();
world.Update(0.01);
Assert.DoesNotThrow(() => world.Update(0.01));
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Assert.That(results, Does.Not.Contain((mockComponent, entity)));
}
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[Reads(typeof(DestroyerComponent), typeof(MockComponent))]
class DestroyAndAddComponentEngine : Engine
{
public override void Update(double dt)
{
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foreach (var (componentPair, entity) in ReadComponentsIncludingEntity<DestroyerComponent>())
{
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RemoveComponent<MockComponent>(entity);
Destroy(entity);
}
}
}
[Test]
public void DestroyEntityWhileRemovingComponent()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new DestroyAndAddComponentEngine());
worldBuilder.AddEngine(new ReaderEngine());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new DestroyerComponent());
worldBuilder.SetComponent(entity, new MockComponent());
var world = worldBuilder.Build();
Assert.DoesNotThrow(() => world.Update(0.01));
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}
[Reads(typeof(MockComponent))]
[WritesPending(typeof(MockComponent))]
[Writes(typeof(MockComponent))]
class AddAndRemoveMockComponentEngine : Engine
{
public override void Update(double dt)
{
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foreach (var (mockComponent, entity) in ReadComponentsIncludingEntity<MockComponent>())
{
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RemoveComponent<MockComponent>(entity);
SetComponent(entity, new MockComponent());
}
}
}
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static Entity entityResult;
[ReadsPending(typeof(MockComponent))]
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class GetEntityFromPendingReadComponents : Engine
{
public override void Update(double dt)
{
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var (_, entity) = ReadComponentIncludingEntity<MockComponent>();
}
}
[Test]
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public void GetEntityFromPendingComponentID()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new AddAndRemoveMockComponentEngine());
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worldBuilder.AddEngine(new GetEntityFromPendingReadComponents());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent());
var world = worldBuilder.Build();
Assert.DoesNotThrow(() => world.Update(0.01));
}
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[Reads(typeof(MockComponent))]
class DelayedMessageEngine : Engine
{
public override void Update(double dt)
{
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foreach (var (component, entity) in ReadComponentsIncludingEntity<MockComponent>())
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{
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RemoveComponent<MockComponent>(entity);
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SendMessage(new MockMessage { }, 1);
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}
}
}
[Test]
public void EngineSendMessageDelayed()
{
resultMessages.Clear();
var worldBuilder = new WorldBuilder();
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worldBuilder.AddEngine(new ActivateTimeDilationEngine());
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worldBuilder.AddEngine(new DelayedMessageEngine());
worldBuilder.AddEngine(new MessageReadEngine());
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var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
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var world = worldBuilder.Build();
world.Update(0.01);
resultMessages.Should().BeEmpty();
world.Update(0.5);
resultMessages.Should().BeEmpty();
world.Update(0.5);
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resultMessages.Should().BeEmpty();
world.Update(2);
resultMessages.Should().NotBeEmpty();
resultMessages.First().Should().BeOfType<MockMessage>();
}
[Reads(typeof(MockComponent))]
class DelayedMessageIgnoringTimeDilationEngine : Engine
{
public override void Update(double dt)
{
foreach (var (component, entity) in ReadComponentsIncludingEntity<MockComponent>())
{
RemoveComponent<MockComponent>(entity);
SendMessageIgnoringTimeDilation(new MockMessage { }, 1);
}
}
}
[Test]
public void EngineSendMessageDelayedIgnoringTimeDilation()
{
resultMessages.Clear();
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ActivateTimeDilationEngine());
worldBuilder.AddEngine(new DelayedMessageIgnoringTimeDilationEngine());
worldBuilder.AddEngine(new MessageReadEngine());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
var world = worldBuilder.Build();
world.Update(0.01);
resultMessages.Should().BeEmpty();
world.Update(0.5);
resultMessages.Should().BeEmpty();
world.Update(0.5);
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resultMessages.Should().NotBeEmpty();
resultMessages.First().Should().BeOfType<MockMessage>();
}
[Receives(typeof(MockMessage))]
[WritesPending(typeof(MockComponent))]
[Writes(typeof(MockComponent))]
class ActivateComponentEngine : Engine
{
public override void Update(double dt)
{
foreach (var message in ReadMessages<MockMessage>())
{
var entity = CreateEntity();
SetComponent(entity, new MockComponent { });
}
}
}
[ReadsPending(typeof(MockComponent))]
class RemoveComponentEngine : Engine
{
public override void Update(double dt)
{
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foreach (var entity in ReadEntities<MockComponent>())
{
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RemoveComponent<MockComponent>(entity);
}
}
}
[Test]
public void EngineAddAndRemoveComponentSameFrame()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ActivateComponentEngine());
worldBuilder.AddEngine(new RemoveComponentEngine());
worldBuilder.SendMessage(new MockMessage { });
var world = worldBuilder.Build();
Assert.DoesNotThrow(() => world.Update(0.01));
}
struct DestroyComponentMessage : IMessage { public Entity entity; }
[Reads(typeof(MockComponent))]
[Writes(typeof(MockComponent))]
class AddComponentEngine : Engine
{
public override void Update(double dt)
{
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foreach (var entity in ReadEntities<MockComponent>())
{
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SetComponent(entity, new MockComponent { });
}
}
}
static Entity readEntity;
[Reads(typeof(MockComponent))]
class ReadEntityByComponentTypeEngine : Engine
{
public override void Update(double dt)
{
readEntity = ReadEntity<MockComponent>();
}
}
[Test]
public void GetEntityByComponentType()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadEntityByComponentTypeEngine());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
var world = worldBuilder.Build();
world.Update(0.01);
entity.Should().BeEquivalentTo(readEntity);
}
static Entity[] readEntities;
[Reads(typeof(MockComponent))]
class ReadEntitiesWithComponentTypeEngine : Engine
{
public override void Update(double dt)
{
readEntities = ReadEntities<MockComponent>().ToArray();
}
}
[Test]
public void ReadEntities()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadEntitiesWithComponentTypeEngine());
worldBuilder.AddEngine(new DestroyAllWithEngine());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
var entityB = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entityB, new MockComponent { });
var world = worldBuilder.Build();
world.Update(0.01);
readEntities.Should().Contain(entity);
readEntities.Should().Contain(entityB);
}
[Reads(typeof(MockComponent))]
class DestroyWithEngine : Engine
{
public override void Update(double dt)
{
if (SomeComponent<MockComponent>())
{
DestroyWith<MockComponent>();
}
}
}
[Test]
public void DestroyWith()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadEntitiesWithComponentTypeEngine());
worldBuilder.AddEngine(new DestroyWithEngine());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
var world = worldBuilder.Build();
world.Update(0.01);
world.Update(0.01); // update twice so the read happens after destroy
readEntities.Should().BeEmpty();
}
[Reads(typeof(MockComponent))]
class DestroyAllWithEngine : Engine
{
public override void Update(double dt)
{
DestroyAllWith<MockComponent>();
}
}
[Test]
public void DestroyAllWith()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadEntitiesWithComponentTypeEngine());
worldBuilder.AddEngine(new DestroyAllWithEngine());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
var entityB = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entityB, new MockComponent { });
var world = worldBuilder.Build();
world.Update(0.01);
world.Update(0.01); // update twice so the read happens after destroy
readEntities.Should().BeEmpty();
}
[Reads(typeof(MockComponent))]
class RemoveComponentByTypeEngine : Engine
{
public override void Update(double dt)
{
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foreach (var (_, entity) in ReadComponentsIncludingEntity<MockComponent>())
{
RemoveComponent<MockComponent>(entity);
}
}
}
[Test]
public void RemoveComponentByType()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ReadComponentsTestEngine());
worldBuilder.AddEngine(new RemoveComponentByTypeEngine());
var entity = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
var entityB = worldBuilder.CreateEntity();
worldBuilder.SetComponent(entity, new MockComponent { });
var world = worldBuilder.Build();
world.Update(0.01);
world.Update(0.01);
resultComponents.Should().BeEmpty();
}
static double dilatedDeltaTime;
[TimeDilationPriority(0)]
class ActivateTimeDilationEngine : Engine
{
public override void Update(double dt)
{
if (!TimeDilationActive)
{
ActivateTimeDilation(0.2, 1, 1, 1);
}
else
{
dilatedDeltaTime = dt;
}
}
}
[Test]
public void ActivateTimeDilation()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ActivateTimeDilationEngine());
var world = worldBuilder.Build();
world.Update(0.01); // activate time dilation
world.Update(0.5);
dilatedDeltaTime.Should().BeApproximately(0.3, 0.01);
world.Update(0.5);
dilatedDeltaTime.Should().BeApproximately(0.1, 0.01);
world.Update(1);
world.Update(0.5);
dilatedDeltaTime.Should().BeApproximately(0.3, 0.01);
}
class ActivateTimeDilationWithoutPriorityEngine : Engine
{
public override void Update(double dt)
{
ActivateTimeDilation(0.2, 1, 1, 1);
}
}
[Test]
public void ActivateTimeDilationWithoutPriorityThrows()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ActivateTimeDilationWithoutPriorityEngine());
var world = worldBuilder.Build();
Assert.Throws<TimeDilationPriorityUndefinedException>(() => world.Update(0.01));
}
[TimeDilationPriority(0)]
class ActivateTimeDilationLowerPriorityEngine : Engine
{
public override void Update(double dt)
{
if (!TimeDilationActive)
{
ActivateTimeDilation(0.2, 1, 1, 1);
}
else
{
dilatedDeltaTime = dt;
}
}
}
[TimeDilationPriority(1)]
class ActivateTimeDilationHigherPriorityEngine : Engine
{
public override void Update(double dt)
{
if (!TimeDilationActive)
{
ActivateTimeDilation(0.5, 1, 1, 1);
}
else
{
dilatedDeltaTime = dt;
}
}
}
[Test]
public void MultipleActivateTimeDilation()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ActivateTimeDilationLowerPriorityEngine());
worldBuilder.AddEngine(new ActivateTimeDilationHigherPriorityEngine());
var world = worldBuilder.Build();
world.Update(0.01); // activate time dilation
world.Update(0.5);
dilatedDeltaTime.Should().BeApproximately(0.3, 0.01);
}
[Test]
public void MultipleActivateTimeDilationWithDuplicatePriority()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ActivateTimeDilationEngine());
worldBuilder.AddEngine(new ActivateTimeDilationLowerPriorityEngine());
Assert.Throws<TimeDilationPriorityConflictException>(() => worldBuilder.Build());
}
static double undilatedDeltaTime;
[IgnoresTimeDilation]
class IgnoresTimeDilationEngine : Engine
{
public override void Update(double dt)
{
undilatedDeltaTime = dt;
}
}
[Test]
public void IgnoresTimeDilation()
{
var worldBuilder = new WorldBuilder();
worldBuilder.AddEngine(new ActivateTimeDilationEngine());
worldBuilder.AddEngine(new IgnoresTimeDilationEngine());
var world = worldBuilder.Build();
world.Update(0.01); // activate time dilation
world.Update(0.5);
undilatedDeltaTime.Should().Be(0.5);
}
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}
}