public void SetOverwritesPreviousComponentOfThatType()
{
var entity = new CobaltEntity();
var expected = new PositionComponent(1, 2);
entity.Set(new PositionComponent(9, 9));
entity.Set(expected);
Assert.That(entity.Get <PositionComponent>(), Is.EqualTo(expected));
}
public void GetGetsSetComponent()
{
var entity = new CobaltEntity();
var expected = new PositionComponent(1, 2);
entity.Set(expected);
Assert.That(entity.Get <PositionComponent>(), Is.EqualTo(expected));
}
public void EntitiesRequirePositionSpriteAndCollisionComponents()
{
var e = new CobaltEntity();
var system = new CollisionSystem();
system.Add(e);
Assert.That(!system.Entities.Any());
// Position component is there by default
e.Set(new SpriteComponent(32, 16));
system.Add(e);
Assert.That(!system.Entities.Any());
e.Set(new CollisionComponent("Player"));
system.Add(e);
Assert.That(system.Entities.Single(), Is.EqualTo(e));
system = new CollisionSystem();
e.Set(new CollisionComponent("Player", "Wall", (p, w) => { }));
system.Add(e);
Assert.That(system.Entities.Single(), Is.EqualTo(e));
}
public void UpdateUpdatesPositionRelativeToElapsedTime()
{
var vX = 17;
var vY = -19;
var velocity = new VelocityComponent(vX, vY);
var pX = 400;
var pY = 128;
var position = new PositionComponent(pX, pY);
var elapsed = 0.7f;
var e = new CobaltEntity();
e.Set(velocity);
e.Set(position);
var system = new VelocitySystem();
system.Add(e);
system.Update(elapsed);
Assert.That(position.X, Is.EqualTo(pX + (elapsed * vX)));
Assert.That(position.Y, Is.EqualTo(pY + (elapsed * vY)));
}
public void UpdateCallsOnCollideWhenCollisionComponentIsSetAndBoundingBoxesOverlap()
{
// Move them so that they overlap, and test.
var wall = new CobaltEntity();
wall.Move(0, 0);
wall.Set(new CollisionComponent("Wall"));
wall.Set(new SpriteComponent(100, 16));
var player = new CobaltEntity();
player.Move(50, 10); // X/Y overlaps wall
player.Set(new SpriteComponent(32, 32));
var wasCallbackCalled = false;
player.Set(new CollisionComponent("Player", "Wall", (p, w) => wasCallbackCalled = true));
var system = new CollisionSystem();
system.Add(wall);
system.Add(player);
Assert.That(system.Entities.Count == 2, "System doesn't have the player and wall entities.");
system.Update(0.1f);
Assert.That(wasCallbackCalled, Is.True);
// Move them so that they don't overlap, and re-test that it didn't trigger the collision resolution action
wasCallbackCalled = false;
player.Move(999, 888);
system.Update(0.1f);
Assert.That(wasCallbackCalled, Is.False);
}
public void MoveToKeyboardDoesntOverrideExistingVelocityComponent()
{
var expectedX = 100;
var expectedY = 200;
var entity = new CobaltEntity();
var v = new VelocityComponent(expectedX, expectedY);
entity.Set(v);
entity.MoveToKeyboard(10);
var actual = entity.Get <VelocityComponent>();
Assert.That(actual.X, Is.EqualTo(expectedX));
Assert.That(actual.Y, Is.EqualTo(expectedY));
}
