/// <summary>
/// Set boundaries for random movements
/// </summary>
protected async void MoveRandomly(float minX, float maxX, float minY, float maxY, float duration)
{
while (IsAlive)
{
var moveAction = new MoveBy(duration, new Vector3(RandomHelper.NextRandom(minX, maxX), RandomHelper.NextRandom(minY, maxY), 0));
await Node.RunActionsAsync(moveAction, moveAction.Reverse());
}
}
async void MoveRandomly()
{
while (IsAlive)
{
var moveAction = new MoveBy(0.75f, new Vector3(RandomHelper.NextRandom(-0.4f, 0.4f), RandomHelper.NextRandom(-0.3f, 0.3f), 0));
await Node.RunActionsAsync(moveAction, moveAction.Reverse());
}
}
async void Launch(Node bulletNode)
{
await bulletNode.RunActionsAsync(
new MoveTo(3f, new Vector3(RandomHelper.NextRandom(-6f, 6f), -6, 0)),
new CallFunc(() => bulletNode.SetScale(0f)));
//remove the bullet from the scene.
bulletNode.Remove();
}
protected async void StartShooting()
{
while (IsAlive && Node.Components.Count > 0)
{
foreach (var weapon in Node.Components.OfType <Weapon>())
{
await weapon.FireAsync(false);
if (!IsAlive)
{
return;
}
}
await Node.RunActionsAsync(new DelayTime(RandomHelper.NextRandom(0.1f, 0.5f)));
}
}
async void SpawnCoins()
{
var player = Player;
while (Player.IsAlive && player == Player)
{
var coinNode = scene.CreateChild();
coinNode.Position = new Vector3(RandomHelper.NextRandom(-2.5f, 2.5f), 5f, 0);
var coin = new Apple();
coinNode.AddComponent(coin);
await coin.FireAsync(false);
await scene.RunActionsAsync(new DelayTime(3f));
coinNode.Remove();
}
}
Node CreateTile(int index)
{
var cache = Application.ResourceCache;
Node tile = Node.CreateChild();
var planeNode = tile.CreateChild();
planeNode.Scale = new Vector3(BackgroundScale, 0.0001f, BackgroundScale);
var planeObject = planeNode.CreateComponent <StaticModel>();
planeObject.Model = cache.GetModel(Assets.Models.Plane);
planeObject.SetMaterial(cache.GetMaterial(Assets.Materials.Grass));
// area for trees:
var sizeZ = BackgroundScale / 2.1f;
var sizeX = BackgroundScale / 3.8f;
Node treeNode = tile.CreateChild();
treeNode.Rotate(new Quaternion(0, RandomHelper.NextRandom(0, 5) * 90, 0), TransformSpace.Local);
treeNode.Scale = new Vector3(0.3f, 0.4f, 0.3f);
var treeGroup = treeNode.CreateComponent <StaticModel>();
treeGroup.Model = cache.GetModel(Assets.Models.Tree);
treeGroup.SetMaterial(cache.GetMaterial(Assets.Materials.Pyramid));
for (float i = -sizeX; i < sizeX; i += 3.2f)
{
for (float j = -sizeZ; j < sizeZ; j += 3.2f)
{
var clonedTreeNode = treeNode.Clone(CreateMode.Local);
clonedTreeNode.Position = new Vector3(i + RandomHelper.NextRandom(-0.3f, 0.3f), 0, j);
}
}
treeNode.Remove();
tile.Rotate(new Quaternion(270 + BackgroundRotationX, 0, 0), TransformSpace.Local);
tile.RotateAround(new Vector3(0, 0, 0), new Quaternion(0, BackgroundRotationY, 0), TransformSpace.Local);
var tilePosX = BackgroundScale * (float)Math.Sin(MathHelper.DegreesToRadians(90 - BackgroundRotationX));
var tilePosY = BackgroundScale * (float)Math.Sin(MathHelper.DegreesToRadians(BackgroundRotationX));
tile.Position = new Vector3(0, (tilePosX + 0.01f) * index, tilePosY * index + FlightHeight);
return(tile);
}
protected override async void Init()
{
InitialRotation = new Quaternion(180, 270, -30);
var cache = Application.ResourceCache;
var node = Node;
var model = node.CreateComponent <StaticModel>();
model.Model = cache.GetModel(Assets.Models.Enemy1);
model.SetMaterial(cache.GetMaterial(Assets.Materials.Enemy1).Clone(""));
node.SetScale(RandomHelper.NextRandom(0.1f, 0.12f));
node.Position = new Vector3(0f, 5f, 0f);
// load weapons:
node.AddComponent(new XamarinCube());
node.Position = new Vector3(3 * (RandomHelper.NextBoolRandom() ? 1 : -1), RandomHelper.NextRandom(0, 2), 0);
await Node.RunActionsAsync(new MoveTo(1f, new Vector3(RandomHelper.NextRandom(-2, 2), RandomHelper.NextRandom(2, 4), 0)));
MoveRandomly(minX: -2f, maxX: 2f, minY: -1f, maxY: 1f, duration: 0.5f);
StartShooting();
}
protected override async Task OnFire(bool player)
{
var cache = Application.ResourceCache;
var bulletNode = CreateRigidBullet(player);
var bulletModelNode = bulletNode.CreateChild();
var model = bulletModelNode.CreateComponent <StaticModel>();
model.Model = cache.GetModel(Assets.Models.Box);
model.SetMaterial(Material.FromImage(Assets.Textures.XamarinLogo));
bulletModelNode.SetScale(2f);
bulletModelNode.Rotate(new Quaternion(45, 0, 0), TransformSpace.Local);
bulletNode.SetScale(RandomHelper.NextRandom(0.15f, 0.2f));
// Trace-effect using particles
var trace = bulletNode.CreateChild();
trace.SetScale(2f);
var particleEmitter = trace.CreateComponent <ParticleEmitter2D>();
particleEmitter.Effect = cache.GetParticleEffect2D(Assets.Particles.Explosion);
// Route (Bezier)
float direction = player ? 1 : -1;
var moveMissileAction = new BezierBy(3f, new BezierConfig
{
ControlPoint1 = new Vector3(0, 3f * direction, 0),
ControlPoint2 = new Vector3(RandomHelper.NextRandom(-3f, 3f), 5 * direction, 0),
EndPosition = new Vector3(0, 8 * direction, 0), //to launch "to" point
});
var bulletRotationTask = bulletModelNode.RunActionsAsync(new RotateBy(3f, 0, 1000, 0));
var bulletMoveTask = bulletNode.RunActionsAsync(new EaseOut(moveMissileAction, 1), new DelayTime(2f)); //a delay to leave the trace effect
await Task.WhenAll(bulletRotationTask, bulletMoveTask);
//remove the missile from the scene.
bulletNode.Remove();
}
async Task LaunchSingleMissile(bool left, bool player)
{
var cache = Application.ResourceCache;
var carrier = Node;
var carrierPos = carrier.Position;
var bulletNode = CreateRigidBullet(player);
bulletNode.Position = new Vector3(carrierPos.X + 0.4f * (left ? -1 : 1), carrierPos.Y + 0.3f, carrierPos.Z);
var bulletModelNode = bulletNode.CreateChild();
bulletModelNode.Scale = new Vector3(1f, 2f, 1f) / 2.5f;
bulletNode.SetScale(0.3f);
// Trace-effect using particles
bulletNode.CreateComponent <ParticleEmitter2D>().Effect = cache.GetParticleEffect2D(Assets.Particles.MissileTrace);
bulletNode.CreateComponent <ParticleEmitter2D>().Effect = cache.GetParticleEffect2D(Assets.Particles.Explosion);
// Route (Bezier)
float directionY = player ? 1 : -1;
float directionX = left ? -1 : 1;
var moveMiscsileAction = new BezierBy(1.0f, new BezierConfig
{
ControlPoint1 = new Vector3(-directionX, 2f * directionY, 0),
ControlPoint2 = new Vector3(RandomHelper.NextRandom(-2, 2) * directionX, 4 * directionY, 0),
EndPosition = new Vector3(RandomHelper.NextRandom(-1, 1) * directionX, 12 * directionY, 0),
});
await bulletNode.RunActionsAsync(
new EaseIn(moveMissileAction, 1), // move
new CallFunc(() => bulletNode.SetScale(0f)), //collapse
new DelayTime(2f)); //a delay to leave the trace effect
//remove the missile from the scene.
bulletNode.Remove();
}