public static void Update(GameWindow window, WorldServer world)
{
_blockRaytrace = world.BlockRaytrace(PlayerEntity.Position, PlayerEntity.Forward, 8);
if (!window.Focused)
{
return;
}
var ks = Keyboard.GetState();
var a = Vector3.Zero;
if (ks.IsKeyDown(Key.A))
{
a.X -= 1;
}
if (ks.IsKeyDown(Key.D))
{
a.X += 1;
}
if (ks.IsKeyDown(Key.ShiftLeft))
{
a.Y -= 1;
}
if (ks.IsKeyDown(Key.Space))
{
a.Y += 1;
}
if (ks.IsKeyDown(Key.S))
{
a.Z -= 1;
}
if (ks.IsKeyDown(Key.W))
{
a.Z += 1;
}
if (Math.Abs(a.LengthSquared) > 0.0001f)
{
PlayerEntity.Move(a.Normalized() * 0.08f);
}
foreach (var keybinding in ClientResources.Keybindings)
{
if (ks.IsKeyDown(keybinding.Key))
{
_currentBlock = keybinding.Value;
}
}
var ms = Mouse.GetState();
if (_oldMouseState != null)
{
var pitch = _oldMouseState.Value.Y - ms.Y;
var yaw = _oldMouseState.Value.X - ms.X;
PlayerEntity.Rotate(pitch * 0.008f, yaw * 0.008f);
if (_oldMouseState.Value.LeftButton == ButtonState.Released && ms.LeftButton == ButtonState.Pressed)
{
BreakBlock(world);
}
if (_oldMouseState.Value.RightButton == ButtonState.Released && ms.RightButton == ButtonState.Pressed)
{
PlaceBlock(world);
}
}
_oldMouseState = ms;
Mouse.SetPosition(window.X + window.Width / 2, window.Y + window.Height / 2);
Camera.Update();
}
public BlockRaytraceResult BlockRaytrace(Vector3 position, Vector3 direction, float range)
{
const float epsilon = -1e-6f;
direction.Normalize();
var start = (position - direction * 0.5f).ToVector3i();
var end = (position + direction * (range + 0.5f)).ToVector3i();
var minX = Math.Min(start.X, end.X) - 1;
var minY = Math.Min(start.Y, end.Y) - 1;
var minZ = Math.Min(start.Z, end.Z) - 1;
var maxX = Math.Max(start.X, end.X) + 1;
var maxY = Math.Max(start.Y, end.Y) + 1;
var maxZ = Math.Max(start.Z, end.Z) + 1;
BlockRaytraceResult result = null;
for (var x = minX; x <= maxX; x++)
{
for (var y = minY; y <= maxY; y++)
{
for (var z = minZ; z <= maxZ; z++)
{
var block = GetBlock(x, y, z);
var blockPosi = new Vector3i(x, y, z);
var bb = block.GetBoundingBox(this, blockPosi);
if (bb == null || !block.CanTarget(this, blockPosi))
{
continue;
}
var translation = bb.Min + (bb.Max - bb.Min) * 0.5f;
var scale = bb.Max - bb.Min;
foreach (var face in BlockFaceHelper.Faces)
{
var normal = face.GetNormal();
var divisor = Vector3.Dot(normal, direction);
//ignore back faces
if (divisor >= epsilon)
{
continue;
}
var planeNormal = normal * normal;
var blockPos = new Vector3(x, y, z) + translation;
var blockSize = new Vector3(0.5f) * scale;
var d = -(Vector3.Dot(blockPos, planeNormal) + Vector3.Dot(blockSize, normal));
var numerator = Vector3.Dot(planeNormal, position) + d;
var distance = Math.Abs(-numerator / divisor);
var point = position + distance * direction;
if (point.X < x + translation.X - blockSize.X + epsilon ||
point.X > x + translation.X + blockSize.X - epsilon ||
point.Y < y + translation.Y - blockSize.Y + epsilon ||
point.Y > y + translation.Y + blockSize.Y - epsilon ||
point.Z < z + translation.Z - blockSize.Z + epsilon ||
point.Z > z + translation.Z + blockSize.Z - epsilon)
{
continue;
}
if (distance <= range && (result == null || result.Distance > distance))
{
result = new BlockRaytraceResult(block, face, new Vector3i(x, y, z), distance,
point, bb);
}
}
}
}
}
return(result);
}
