// screen flashes

extend Class SWWMHandler
{
	transient Array<QueuedFlash> flashes;
	// heal/armor flashes need to be handled here so they don't stack
	transient int hflash[MAXPLAYERS], aflash[MAXPLAYERS];

	static void HealthFlash( int p )
	{
		let hnd = SWWMHandler(EventHandler.Find("SWWMHandler"));
		if ( !hnd || (p == -1) ) return;
		hnd.hflash[p] = gametic+5;
	}

	static void ArmorFlash( int p )
	{
		let hnd = SWWMHandler(EventHandler.Find("SWWMHandler"));
		if ( !hnd || (p == -1) ) return;
		hnd.aflash[p] = gametic+5;
	}

	static void DoFlash( Actor camera, Color c, int duration )
	{
		// don't flash when paused
		if ( menuactive && (menuactive != Menu.OnNoPause) ) return;
		QueuedFlash qf = new("QueuedFlash");
		qf.duration = duration;
		qf.c = c;
		qf.tic = gametic;
		qf.cam = camera;
		let hnd = SWWMHandler(EventHandler.Find("SWWMHandler"));
		if ( !hnd ) return;	// not supposed to happen
		hnd.flashes.push(qf);
	}

	private void FlashTick()
	{
		for ( int i=0; i<flashes.size(); i++ )
		{
			if ( flashes[i].tic >= gametic ) continue;
			flashes.Delete(i);
			i--;
		}
	}
	private ui void FlashUITick()
	{
		for ( int i=0; i<flashes.size(); i++ )
		{
			if ( flashes[i].tic < gametic ) continue;
			GenericFlash gf = new("GenericFlash").Setup(flashes[i].cam,flashes[i].c,flashes[i].duration);
			StatusBar.AttachMessage(gf,0,BaseStatusBar.HUDMSGLayer_UnderHUD);
		}
	}
	private ui void FlashRender( RenderEvent e )
	{
		int camplayer = players[consoleplayer].Camera.PlayerNumber();
		if ( camplayer == -1 ) return;
		if ( gametic < hflash[camplayer] )
		{
			double fstr = (hflash[camplayer]-(gametic+e.FracTic))/5.;
			Screen.Dim(Color(64,128,255),.1875*fstr,0,0,Screen.GetWidth(),Screen.GetHeight());
		}
		if ( gametic < aflash[camplayer] )
		{
			double fstr = (aflash[camplayer]-(gametic+e.FracTic))/5.;
			Screen.Dim(Color(96,255,64),.1875*fstr,0,0,Screen.GetWidth(),Screen.GetHeight());
		}
	}
}