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~~NOTOC~~
<=[[4rpl:start| Index]]

:!: Available in version 1.3 and later.
====== MSG_FrameAdvance ======

===== Description =====
"MSG_FrameAdvance" is a message that is automatically sent every frame of the game. Any listening script can receive this message. Frames happen at up to 60 times per second. See [[GetMouseDelta]] for an example of what this might be good for.

The frame advance process is as followed:
  Loop 1, 2, or 4 times based on speed:
  {
    PreUpdate
    Units
    PostUpdate
    return to top of loop
  }
  FrameAdvance
  If high FPS is on, run FrameAdvance again for the interpolation frame
  Start next update
\\
===== Examples =====
<code 4rpl>
:Frame	
	#This function is set to get called by the MSG_FrameAdvance message.
	#This message comes every game frame (60 fps when in high fps mode).
	#This callback also happens when the game is paused. Exercise caution when using this callback since
	#it runs on the 'in-between' frames between game updates as well as on game update frames.
        Trace(GetGameFrameCount)

:Once
	RegisterForMSG("MSG_FrameAdvance" "Frame")

</code>
<code 4rpl>RegisterForMSG("MSG_FrameAdvance" "Frame")</code>

<=[[4rpl:start| Index]]

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