public GameObjectInstance GetNearestHydrant(Vector2 pos, float distanceLimit = 10_000)
{
distanceLimit *= distanceLimit;
GameObjectInstance nearest = null;
var dist = float.PositiveInfinity;
foreach (var h in gameObjectInstances.Where(i => i.Type.Type == ObjectType.Hydrant))
{
var d = (h.Position.ToVector2() - pos).LengthSquared();
if (d < dist && d < distanceLimit)
{
dist = d;
nearest = h;
}
}
return(nearest);
}
/// <returns>this</returns>
public LevelScreen LoadLevel(int id)
{
try {
levelId = id;
backgroundGenerated = false;
player.Reset();
using (var br = new BinaryReader(File.OpenRead($"Levels/{id}.level"))) {
// magic number
var bytes = br.ReadBytes(9);
for (var i = 0; i < 9; ++i)
{
if (bytes[i] != levelFileMagicNumber[i])
{
throw new FormatException();
}
}
// walls
for (var y = 0; y < 17; ++y)
{
var u = br.ReadUInt32();
for (var x = 0; x < 32; ++x)
{
walls[x, y] = (byte)(BinaryHelper.GetBit(u, x) ? 0xF0 : 0);
}
}
for (var x = 0; x < 32; ++x)
{
for (var y = 0; y < 17; ++y)
{
if (walls[x, y] > 0)
{
BinaryHelper.SetBit(ref walls[x, y], 0, WallAt(x - 1, y));
BinaryHelper.SetBit(ref walls[x, y], 1, WallAt(x, y + 1));
BinaryHelper.SetBit(ref walls[x, y], 2, WallAt(x + 1, y));
BinaryHelper.SetBit(ref walls[x, y], 3, WallAt(x, y - 1));
}
}
}
wallColliders.Clear();
var processed = new bool[32, 17];
for (var x = 0; x < 32; ++x)
{
for (var y = 0; y < 17; ++y)
{
if (processed[x, y])
{
continue;
}
if (walls[x, y] > 0)
{
if (WallAt(x + 1, y))
{
var w = 2;
processed[x + 1, y] = true;
for (var _x = x + 2; WallAt(_x, y); processed[_x, y] = true, ++_x, ++w)
{
}
wallColliders.Add(new Rect(x * 32 + w * 16, y * 32 + 16, w * 32, 32));
}
else if (WallAt(x, y + 1))
{
var h = 2;
processed[x, y + 1] = true;
for (var _y = y + 2; WallAt(x, _y); processed[x, _y] = true, ++_y, ++h)
{
}
wallColliders.Add(new Rect(x * 32 + 16, y * 32 + h * 16, 32, h * 32));
}
else
{
wallColliders.Add(new Rect(x * 32 + 16, y * 32 + 16, 32, 32));
}
}
processed[x, y] = true;
}
}
// floor
for (var y = 0; y < 17; ++y)
{
var u = br.ReadUInt64();
for (var x = 0; x < 32; ++x)
{
floor[x, y] = (byte)(
(BinaryHelper.GetBit(u, x * 2) ? 1 : 0) +
(BinaryHelper.GetBit(u, x * 2 + 1) ? 2 : 0)
);
}
}
// objects
gameObjectInstances.Clear();
var count = br.ReadInt16();
for (var i = 0; i < count; ++i)
{
var name = br.ReadString();
var x = br.ReadUInt16();
var y = br.ReadUInt16();
var rotation = br.ReadUInt16();
if (name == "player")
{
br.ReadBoolean(); // discard 1 bool
player.Position = new Vector2(x, y);
}
else
{
var inst = new GameObjectInstance(
gameObjects[name],
new Point(x, y),
rotation
);
if (br.ReadBoolean())
{
inst.SetAlight();
}
gameObjectInstances.Add(inst);
}
}
startingCost = gameObjectInstances.Sum(inst => inst.Type.Cost);
}
return(this);
} catch (Exception e) {
return(null);
}
}