public bool intersect(XAMLEntity other)
{
// Do AABB box intersection
return(pX < (other.pX + other.size) &&
(pX + size) > other.pX &&
pY < (other.pY + other.size) &&
(pY + size) > other.pY);
}
public void spawnEnemy(XAMLEntity player, float gameWidth, float gameHeight)
{
Random r = new Random();
foreach (var e in enemies)
{
if (!enemySpawnMap[e])
{
float nx, ny;
do
{
nx = (float)(r.NextDouble() * (gameWidth - 30));
ny = (float)(r.NextDouble() * (gameHeight - 30));
} while (dist(nx, ny, player.pX, player.pY) < 50);
e.pX = nx;
e.pY = ny;
enemySpawnMap[e] = true;
break;
}
}
}
public MainPage()
{
InitializeComponent();
// Calculate Canvas Width and Height
// Setup Enemy Spawners
player = new XAMLEntity(PlayerBox, 30, 50, 50);
spawner = new EnemySpawner(new View[] { EnemyBox1, EnemyBox2, EnemyBox3, EnemyBox4, EnemyBox5 });
// Mount Spawning Thread
Task.Factory.StartNew(async() =>
{
while (true)
{
await Task.Delay(3000);
MainThread.BeginInvokeOnMainThread(() =>
{
spawner.spawnEnemy(player, gameWidth, gameHeight);
});
}
});
}
public void despawn(XAMLEntity enemy)
{
enemy.pX = -100;
enemy.pY = -100;
enemySpawnMap[enemy] = false;
}