Thread:hang

Blocks this thread forever. It will stop under any of the following circumstances:

• Its parent thread finishes or stops.
• A stopping signal for this thread is emitted (see Thread:stop_on).
• Thread:stop is called on this thread.

This method is useful when a thread spawns child threads and needs to keep them alive.

Usage

thread:hang()

Examples

local script = crystal.Script:new();

script:run_thread(function(self)
  self:stop_on("party_is_over");

  self:thread(function(self)
    while true do
      self:wait_frame();
      print("singing");
    end
  end);

  self:thread(function(self)
    while true do
      self:wait_frame();
      print("dancing");
    end
  end);

  -- Without this statement, the two child threads would immediately stop
  self:hang();
end);

script:update(0); -- Prints "singing" and "dancing" (in any order)
script:update(0); -- Prints "singing" and "dancing" (in any order)
script:signal("party_is_over");
script:update(0); -- Nothign happens