public void RenderFrame()
{
Vector2Int fieldSize = gameMode.GetFieldSize();
int[,] field = gameMode.GetField();
Vector2Int offset = new Vector2Int(Screen.width / 2 - fieldSize.x * cellSize / 2, Screen.height / 2 - fieldSize.y * cellSize / 2);
Rect backgroundRect = new Rect(offset.x, offset.y, fieldSize.x * cellSize, fieldSize.y * cellSize);
GUI.DrawTexture(backgroundRect, backgroundTexture);
DrawGrid(offset, field);
Rect labelRect = backgroundRect;
labelRect.center += new Vector2(labelRect.width + 10, 0);
GUIStyle labelStyle = new GUIStyle();
labelStyle.fontSize = 20;
labelStyle.normal.textColor = Color.white;
GUI.Label(labelRect,
"Controls:\n" +
"1,2 - Switch mode\n" +
"P - pause, R - restart\n" +
"Left, Right arrows - move horizontally\n" +
"Up arrow or X - rotate clockwise\n" +
"Left control or Z - rotate counter-clockwise\n" +
"Down arrow - force land\n",
labelStyle);
}