void IECSSystem.Execute(ECSEngine engine, ECSEntity[] entities)
{
for (int i = 0; i < entities.Length; i++)
{
ECSEntity entity = entities[i];
TimeComponent tc = engine.GetComponent <TimeComponent>(entity);
tc.CurrentTime -= Time.DeltaTime;
if (tc.CurrentTime <= 0f)
{
tc.CurrentTime += tc.Time;
SpawnPointComponent pc = engine.GetComponent <SpawnPointComponent>(entity);
var enemy = engine.CreateEntity();
engine.AddComponent <NameComponent>(enemy,
new NameComponent()
{
Name = "ENEMY"
});
engine.AddComponent <PositionComponent>(enemy,
new PositionComponent()
{
Position = pc.SpawnPoint
});
engine.AddComponent <VelocityComponent>(enemy,
new VelocityComponent()
{
Velocity = new Vector2(0f, 5f)
});
engine.AddComponent(enemy, new BoxColliderComponent()
{
Size = new Vector2(1f, 1f)
});
engine.AddComponent <SpriteRendererComponent>(enemy,
new SpriteRendererComponent()
{
RenderOffset = RenderOffset.Player,
Texture = TextureManager.GetTexture("EnemyBlack2"),
Sprite = new Sprite(1f, 1f)
{
pivot = Vector2.One * 0.5f
}
});
engine.AddComponent <AIComponent>(enemy, new AIComponent());
}
engine.SetComponent <TimeComponent>(entity, tc);
}
}
void IECSSystem.Execute(ECSEngine engine, ECSEntity[] entities)
{
for (int i = 0; i < entities.Length; i++)
{
ECSEntity entity = entities[i];
if (Input.IsKeyDown(KeyCode.Space))
{
WeaponComponent wc = engine.GetComponent <WeaponComponent>(entity);
PositionComponent pc = engine.GetComponent <PositionComponent>(entity);
ECSEntity bullet = engine.CreateEntity();
engine.AddComponent <NameComponent>(bullet,
new NameComponent()
{
Name = "BULLET"
});
engine.AddComponent <PositionComponent>(bullet,
new PositionComponent()
{
Position = pc.Position + wc.BulletSpawnOffset
});
engine.AddComponent <VelocityComponent>(bullet,
new VelocityComponent()
{
Velocity = new Vector2(0f, -10f)
});
engine.AddComponent(bullet, new BoxColliderComponent()
{
Size = new Vector2(1f, 1f)
});
engine.AddComponent <SpriteRendererComponent>(bullet,
new SpriteRendererComponent()
{
RenderOffset = RenderOffset.Player,
Texture = TextureManager.GetTexture("LaserRed01"),
Sprite = new Sprite(0.1f, 1f)
{
pivot = new Vector2(0.1f, 0.5f)
}
});
engine.AddComponent <AIComponent>(bullet, new AIComponent());
}
}
}
static void Main(string[] args)
{
// create engine
ECSEngine engine = new ECSEngine();
// register components (NO MORE NEEDED)
//engine.RegisterComponent<PositionComponent>();
//engine.RegisterComponent<VelocityComponent>();
// add systems
MoveSystem moveSystem = new MoveSystem();
engine.AddSystem(moveSystem);
for (int i = 0; i < 5; i++)
{
// create entities
ECSEntity entity = engine.CreateEntity();
// add components
engine.AddComponent(entity, new PositionComponent());
engine.AddComponent(entity, new VelocityComponent()
{
Velocity = new Vector3(0f, -1f * (i + 1), 0f)
});
}
// init engine
engine.Init();
while (true)
{
// run engine
engine.Run();
System.Threading.Thread.Sleep((int)(Time.DeltaTime * 1000));
}
}
void IECSSystem.Execute(ECSEngine engine, ECSEntity[] entities)
{
for (int i = 0; i < entities.Length - 1; i++)
{
ECSEntity entity1 = entities[i];
for (int j = i + 1; j < entities.Length; j++)
{
ECSEntity entity2 = entities[j];
if (entity1 != entity2)
{
PositionComponent pc1 = engine.GetComponent <PositionComponent>(entity1);
BoxColliderComponent box1 = engine.GetComponent <BoxColliderComponent>(entity1);
Vector2 box1ExtentMin = this.GetExtentMin(pc1, box1);
Vector2 box1ExtentMax = this.GetExtentMax(pc1, box1);
PositionComponent pc2 = engine.GetComponent <PositionComponent>(entity2);
BoxColliderComponent box2 = engine.GetComponent <BoxColliderComponent>(entity2);
Vector2 box2ExtentMin = this.GetExtentMin(pc2, box2);
Vector2 box2ExtentMax = this.GetExtentMax(pc2, box2);
if (this.Intersect(box1ExtentMin, box1ExtentMax, box2ExtentMin, box2ExtentMax))
{
ECSEntity collisionDataEntity = engine.CreateEntity();
engine.AddComponent(collisionDataEntity, new CollisionDataComponent()
{
Entity1 = entity1, Entity2 = entity2
});
}
}
}
}
}
public static void Init()
{
// init window
Game.Window.SetDefaultOrthographicSize(20f);
// add textures
TextureManager.AddTexture("Player", new Texture(@"Assets\Player.png"));
TextureManager.AddTexture("EnemyBlack2", new Texture(@"Assets\EnemyBlack2.png"));
TextureManager.AddTexture("LaserRed01", new Texture(@"Assets\LaserRed01.png"));
//add systems
engine.AddSystem(new PlayerMoveSystem());
engine.AddSystem(new PlayerShootSystem());
engine.AddSystem(new AISpawnSystem());
engine.AddSystem(new AIMoveSystem());
engine.AddSystem(new DestroyEntityWhenOutOfScreenSystem());
engine.AddSystem(new CollisionDetectionSystem());
engine.AddSystem(new CollisionSolverSystem());
engine.AddSystem(new SpriteRendererSystem());
//create entities & add components
#region Player
ECSEntity player = engine.CreateEntity();
var halfOrthoSize = Game.Window.CurrentOrthoGraphicSize * 0.5f;
engine.AddComponent(player, new NameComponent()
{
Name = "PLAYER"
});
engine.AddComponent(player, new InputReceiverComponent());
engine.AddComponent(player, new PositionComponent()
{
Position = new Vector2(halfOrthoSize * Window.aspectRatio, halfOrthoSize * 1.5f)
});
engine.AddComponent(player, new VelocityComponent()
{
Velocity = new Vector2(5f, 5f)
});
engine.AddComponent(player, new BoxColliderComponent()
{
Size = new Vector2(1f, 1f)
});
engine.AddComponent(player, new SpriteRendererComponent()
{
RenderOffset = RenderOffset.Player,
Texture = TextureManager.GetTexture("Player"),
Sprite = new Sprite(1f, 1f)
{
pivot = Vector2.One * 0.5f
}
});
engine.AddComponent(player, new WeaponComponent()
{
BulletSpawnOffset = new Vector2(0f, -1f)
});
#endregion
#region EnemySpawner(s)
int spawnersCount = 5;
float step = Game.Window.OrthoWidth / (float)(spawnersCount + 1);
float offset = -1f;
float minTime = 1f;
float maxTime = 3f;
for (int i = 0; i < spawnersCount; i++)
{
var spawner = engine.CreateEntity();
engine.AddComponent(spawner, new NameComponent()
{
Name = "SPAWNER " + i
});
engine.AddComponent(spawner,
new SpawnPointComponent()
{
SpawnPoint = new Vector2(step * (i + 1), offset)
});
var time = (float)(minTime + Game.Random.NextDouble() * (maxTime - minTime));
engine.AddComponent(spawner,
new TimeComponent()
{
Time = time,
CurrentTime = time
});
}
#endregion
// init engine
Game.engine.Init();
}