public void Update(float deltaTime)
{
var positions = new Span <PositionComponent>(this.positionComponents);
var velocities = new Span <VelocityComponent>(this.velocityComponents);
for (int i = 0; i < this.length; i++)
{
var position = positions[i];
position.Value += velocities[i].Value * deltaTime;
var velocity = velocities[i];
var x = MathF.Select(1, -1, position.Value.X <this.minX || position.Value.X> this.maxX);
var y = MathF.Select(1, -1, position.Value.Y <this.minY || position.Value.Y> this.maxY);
var multiply = new Vector2(x, y);
velocity.Value *= multiply;
position.Value = new Vector2(position.Value.X.Clamp(this.minX, this.maxX), position.Value.Y.Clamp(this.minY, this.maxY));
positions[i] = position;
velocities[i] = velocity;
}
}
private static void RunJob(
float deltaTime,
int sliceLength,
Bounds bounds,
Memory <PositionComponent> positionsSlice,
Memory <VelocityComponent> velocitiesSlice)
{
var positions = positionsSlice.Span;
var velocities = velocitiesSlice.Span;
for (int i = 0; i < sliceLength; i++)
{
var position = positions[i];
position.Value += velocities[i].Value * deltaTime;
var velocity = velocities[i];
var x = MathF.Select(1, -1, position.Value.X <bounds.MinX || position.Value.X> bounds.MaxX);
var y = MathF.Select(1, -1, position.Value.Y <bounds.MinY || position.Value.Y> bounds.MaxY);
var multiply = new Vector2(x, y);
velocity.Value *= multiply;
position.Value = new Vector2(position.Value.X.Clamp(bounds.MinX, bounds.MaxX), position.Value.Y.Clamp(bounds.MinY, bounds.MaxY));
positions[i] = position;
velocities[i] = velocity;
}
}
public override void Update(float deltaTime)
{
this.position.Value += this.Value * deltaTime;
var x = MathF.Select(1, -1, position.Value.X <this.bounds.MinX || position.Value.X> this.bounds.MaxX);
var y = MathF.Select(1, -1, position.Value.Y <this.bounds.MinY || position.Value.Y> this.bounds.MaxY);
var multiply = new Vector2(x, y);
this.Value *= multiply;
this.position.Value = new Vector2(position.Value.X.Clamp(this.bounds.MinX, this.bounds.MaxX), position.Value.Y.Clamp(this.bounds.MinY, this.bounds.MaxY));
}
public override void Initialize(GraphicsDeviceManager graphics)
{
base.Initialize(graphics);
var velocityMagnitude = (float)this.random.NextDouble() * (MaxVelocity - MinVelocity) + MinVelocity;
this.Velocity = this.random.NextVector2() * velocityMagnitude;
this.VelocityModifier = (float)this.random.NextDouble() * (MaxModifier - MinModifier) + MinModifier;
var red = MathB.Select(0, byte.MaxValue, this.VelocityModifier < 0.0f);
var green = MathB.Select(0, byte.MaxValue, this.VelocityModifier >= 0.0f);
var scaleMax = MathF.Select(MinModifier, MaxModifier, this.VelocityModifier >= 0.0f);
var alpha = (byte)(int)(128 * (this.VelocityModifier / scaleMax));
this.spriteColor = new Color(red, green, byte.MinValue, alpha);
}
public virtual void Update(GameTime gameTime)
{
this.Position += this.Velocity * (float)gameTime.ElapsedGameTime.TotalSeconds;
const int minX = 0;
var maxX = this.boundX;
const int minY = 0;
var maxY = this.boundY;
var x = MathF.Select(1, -1, this.Position.X <minX || this.Position.X> maxX);
var y = MathF.Select(1, -1, this.Position.Y <minY || this.Position.Y> maxY);
var multiply = new Vector2(x, y);
this.Velocity *= multiply;
this.Position = new Vector2(this.Position.X.Clamp(minX, maxX), this.Position.Y.Clamp(minY, maxY));
}
protected override void Initialize()
{
var displaySize = this.graphics.GraphicsDevice.DisplayMode.TitleSafeArea;
this.graphics.PreferredBackBufferHeight = displaySize.Height - 100;
this.graphics.PreferredBackBufferWidth = displaySize.Width;
this.graphics.ApplyChanges();
const int minX = 0;
var maxX = this.graphics.PreferredBackBufferWidth;
const int minY = 0;
var maxY = this.graphics.PreferredBackBufferHeight;
this.moveSystem = new MoveSystem(this.graphics, Scene.EntityCount, Scene.PositionComponents, Scene.VelocityComponents);
this.velocityModifierSystem = new VelocityModifierSystem(Scene.EntityCount, Scene.VelocityModifierCount, Scene.PositionComponents,
Scene.VelocityConstraintComponents, Scene.VelocityComponents, Scene.SizeComponents, Scene.VelocityModifierComponents);
var random = new Random();
for (int i = 0; i < Scene.EntityCount; i++)
{
var position = new PositionComponent();
position.Value = new Vector2(random.Next(minX, maxX), random.Next(minY, maxY));
Scene.PositionComponents[i] = position;
var entityTypePredicate = i >= Constants.DotCount;
var velMin = MathF.Select(Constants.Dot.MinVelocity, Constants.Bubble.MinVelocity, entityTypePredicate);
var velMax = MathF.Select(Constants.Dot.MaxVelocity, Constants.Bubble.MaxVelocity, entityTypePredicate);
Scene.VelocityConstraintComponents[i] = new VelocityConstraintComponent(velMin, velMax);
var velocity = new VelocityComponent();
velocity.Value = random.NextVelocity(velMin, velMax);
Scene.VelocityComponents[i] = velocity;
var velocityModifierValue = (float)random.NextDouble() * (Constants.Bubble.MaxModifier - Constants.Bubble.MinModifier) + Constants.Bubble.MinModifier;
var scaleMax = MathF.Select(Constants.Bubble.MinModifier, Constants.Bubble.MaxModifier, velocityModifierValue >= 0.0f);
var bubbleAlpha = (byte)(int)(128 * (velocityModifierValue / scaleMax));
var bubbleColorR = MathB.Select(0, byte.MaxValue, velocityModifierValue < 0.0f);
var bubbleColorG = MathB.Select(0, byte.MaxValue, velocityModifierValue >= 0.0f);
var dotColors = new byte[3];
random.NextBytes(dotColors);
var colorR = MathB.Select(dotColors[0], bubbleColorR, entityTypePredicate);
var colorG = MathB.Select(dotColors[1], bubbleColorG, entityTypePredicate);
var colorB = MathB.Select(dotColors[2], byte.MinValue, entityTypePredicate);
var alpha = MathB.Select(byte.MaxValue, bubbleAlpha, entityTypePredicate);
var index = Math.Select(Constants.Sprites.Dot, Constants.Sprites.Bubble, entityTypePredicate);
Scene.SpriteComponents[i] = new SpriteComponent(colorR, colorG, colorB, alpha, index);
if (entityTypePredicate)
{
var modifierIndex = i - Constants.DotCount;
Scene.SizeComponents[modifierIndex] = new SizeComponent(64);
Scene.VelocityModifierComponents[modifierIndex] = new VelocityModifierComponent(velocityModifierValue);
}
}
base.Initialize();
}
public CompositionGame()
{
PerfMon.InitializeStarted();
this.graphics = new GraphicsDeviceManager(this);
this.Content.RootDirectory = "Content";
this.IsMouseVisible = true;
this.IsFixedTimeStep = false;
this.texture2Ds = new Texture2D[2];
var worldBoundsGameObject = new GameObject("World Bounds");
var worldBoundsComponent = new WorldBoundsComponent(this.graphics);
worldBoundsGameObject.AddComponent(worldBoundsComponent);
s_GameObjects.Add(worldBoundsGameObject);
var random = new Random();
for (var i = 0; i < BubbleCount; i++)
{
var gameObject = new GameObject($"Bubble #{i}");
var positionComponent = new PositionComponent(random);
gameObject.AddComponent(positionComponent);
var velocityComponent = new VelocityComponent(random, Bubble.MinVelocity, Bubble.MaxVelocity);
gameObject.AddComponent(velocityComponent);
var velocityModifier = (float)random.NextDouble() * (Bubble.MaxModifier - Bubble.MinModifier) + Bubble.MinModifier;
var spriteComponent = new SpriteComponent();
spriteComponent.ColorR = MathB.Select(0, byte.MaxValue, velocityModifier < 0.0f);
spriteComponent.ColorG = MathB.Select(0, byte.MaxValue, velocityModifier >= 0.0f);
spriteComponent.ColorB = byte.MinValue;
var scaleMax = MathF.Select(Bubble.MinModifier, Bubble.MaxModifier, velocityModifier >= 0.0f);
spriteComponent.Alpha = (byte)(int)(128 * (velocityModifier / scaleMax));
spriteComponent.Index = Sprites.Bubble;
gameObject.AddComponent(spriteComponent);
var velocityModifierComponent = new VelocityModifierComponent();
velocityModifierComponent.VelocityModifier = velocityModifier;
gameObject.AddComponent(velocityModifierComponent);
var sizeComponent = new SizeComponent();
sizeComponent.Size = 64;
gameObject.AddComponent(sizeComponent);
s_GameObjects.Add(gameObject);
}
for (int i = 0; i < DotCount; i++)
{
var gameObject = new GameObject($"Dot #{i}");
var positionComponent = new PositionComponent(random);
gameObject.AddComponent(positionComponent);
var velocityComponent = new VelocityComponent(random, Dot.MinVelocity, Dot.MaxVelocity);
gameObject.AddComponent(velocityComponent);
var spriteComponent = new SpriteComponent();
var colors = new byte[3];
random.NextBytes(colors);
spriteComponent.ColorR = colors[0];
spriteComponent.ColorG = colors[1];
spriteComponent.ColorB = colors[2];
spriteComponent.Alpha = byte.MaxValue;
spriteComponent.Index = Sprites.Dot;
gameObject.AddComponent(spriteComponent);
var modifyVelocityComponent = new ModifyVelocityComponent();
gameObject.AddComponent(modifyVelocityComponent);
s_GameObjects.Add(gameObject);
}
}