Access to basic engine properties. The [code]Engine[/code] class allows you to query and modify the game's run-time parameters, such as frames per second, time scale, and others. Returns the total number of frames drawn. Returns the frames per second of the running game. Returns the number of fixed iterations per second (for fixed process and physics). Returns the main loop object (see [MainLoop] and [SceneTree]). Returns the desired frames per second. If the hardware cannot keep up, this setting may not be respected. It defaults to 0, which indicates no limit. Returns how fast or slow the in-game clock ticks versus the real life one. It defaults to 1.0. A value of 2.0 means the game moves twice as fast as real life, whilst a value of 0.5 means the game moves at half the regular speed. Returns the current engine version information in a Dictionary. "major" - Holds the major version number as a String "minor" - Holds the minor version number as a String "patch" - Holds the patch version number as a String "status" - Holds the status (e.g. "beta", "rc1", "rc2", ... "stable") as a String "revision" - Holds the revision (e.g. "custom-build") as a String "string" - major + minor + patch + status + revision in a single String Returns [code]true[/code] if the editor is running. Returns [code]true[/code] if the game is inside the fixed process and physics phase of the game loop. Sets the running inside the editor hint if [code]enabled[/code] is [code]true[/code]. Sets the number of fixed iterations per second (for fixed process and physics). Sets the target frames per second. Sets the time scale.