Simple battleground

[mrlongshen 22]

//===== rAthena Script =======================================
//= Battleground: PVP
//===== By: ==================================================
//= AnnieRuru
//===== Current Version: =====================================
//= 1.0
//===== Compatible With: =====================================
//= rAthena Project
//===== Description: =========================================
//= A simple battleground script:
//= Kill players from the other team.
//===== Additional Comments: =================================
//= 1.0 First version, edited. [Euphy]
//============================================================

-	script	bg_pvp#control	-1,{
OnInit:
	.minplayer2start = 2;      // minimum players to start (ex. if 3vs3, set to 3)
	.eventlasting    = 20*60;  // event duration before auto-reset (20 minutes * seconds)
	setarray .rewarditem[0],   // rewards for the winning team: <item>,<amount>,...
		501, 10;
	end;
OnStart:
	if ( getwaitingroomstate( 0, .rednpcname$ ) < .minplayer2start || getwaitingroomstate( 0, .bluenpcname$ ) < .minplayer2start )
		end;

	// create Battleground and teams
	.red = waitingroom2bg( "guild_vs3", 13,50, strnpcinfo(0)+"::OnRedQuit", strnpcinfo(0)+"::OnRedDead", .rednpcname$ );
	copyarray .team1aid, $@arenamembers, $@arenamembersnum;
	.team1count = .minplayer2start;
	.blue = waitingroom2bg( "guild_vs3", 86,50, strnpcinfo(0)+"::OnBlueQuit", strnpcinfo(0)+"::OnBlueDead", .bluenpcname$ );
	copyarray .team2aid, $@arenamembers, $@arenamembersnum;
	.team2count = .minplayer2start;
	delwaitingroom .rednpcname$;
	delwaitingroom .bluenpcname$;
	bg_warp .red, "guild_vs3", 13,50;
	bg_warp .blue, "guild_vs3", 86,50;
	.score[1] = .score[2] = .minplayer2start;
	bg_updatescore "guild_vs3", .score[1], .score[2];

	// match duration
	sleep .eventlasting * 1000;

	// end match, destroy Battleground, reset NPCs
	if ( .score[1] > .score[2] ) {
		mapannounce "guild_vs3", "- Red Team is victorious! -", bc_map;
		callsub L_Reward, 1;
	}
	else if ( .score[1] < .score[2] ) {
		mapannounce "guild_vs3", "- Blue Team is victorious! -", bc_map;
		callsub L_Reward, 2;
	}
	else
		mapannounce "guild_vs3", "- The match has ended in a draw! -", bc_map;
	bg_warp .red, "prontera",152,178;
	bg_warp .blue, "prontera",154,178;
	bg_destroy .red;
	bg_destroy .blue;
	donpcevent .rednpcname$ +"::OnStart";
	donpcevent .bluenpcname$ +"::OnStart";
	end;

L_Reward:
	for ( .@i = 0; .@i < getd(".team"+ getarg(0) +"count"); .@i++ )
		getitem .rewarditem[0], .rewarditem[1], getd(".team"+ getarg(0) +"aid["+ .@i +"]" );
	return;

// "OnDeath" event
OnRedDead:  callsub L_Dead, 1;
OnBlueDead: callsub L_Dead, 2;
L_Dead:
	.score[ getarg(0) ]--;
	bg_updatescore "guild_vs3", .score[1], .score[2];
	while ( getd( ".team"+ getarg(0) +"aid["+ .@i +"]" ) != getcharid(3) && .@i < getd(".team"+ getarg(0) +"count") ) .@i++;
	deletearray getd( ".team"+ getarg(0) +"aid["+ .@i +"]" ), 1;
	setd ".team"+ getarg(0) +"count", getd(".team"+ getarg(0) +"count") -1;
	bg_leave;
	if ( !.score[ getarg(0) ] )
		awake strnpcinfo(0);
	sleep2 1250;
	percentheal 100,100;
	end;

// "OnQuit" event
OnRedQuit:  callsub L_Quit, 1;
OnBlueQuit: callsub L_Quit, 2;
L_Quit:
	.score[ getarg(0) ]--;
	bg_updatescore "guild_vs3", .score[1], .score[2];
	percentheal 100, 100;
	while ( getd( ".team"+ getarg(0) +"aid["+ .@i +"]" ) != getcharid(3) && .@i < getd(".team"+ getarg(0) +"count") ) .@i++;
	deletearray getd( ".team"+ getarg(0) +"aid["+ .@i +"]" ), 1;
	setd ".team"+ getarg(0) +"count", getd(".team"+ getarg(0) +"count") -1;
	if ( !.score[ getarg(0) ] )
		awake strnpcinfo(0);
	end;
}

gonryun,153,107,5	script	Red Team#bg_pvp	733,{
	end;
OnInit:
	sleep 1;
	set getvariableofnpc( .rednpcname$, "bg_pvp#control" ), strnpcinfo(0);
OnStart:
	waitingroom "Red Team", getvariableofnpc( .minplayer2start, "bg_pvp#control" ) +1, "bg_pvp#control::OnStart", getvariableofnpc( .minplayer2start, "bg_pvp#control" );
	end;
}

gonryun,153,104,5	script	Blue Team#bg_pvp	734,{
	end;
OnInit:
	sleep 1;
	set getvariableofnpc( .bluenpcname$, "bg_pvp#control" ), strnpcinfo(0);
OnStart:
	waitingroom "Blue Team", getvariableofnpc( .minplayer2start, "bg_pvp#control" ) +1, "bg_pvp#control::OnStart", getvariableofnpc( .minplayer2start, "bg_pvp#control" );
	end;
}

guild_vs3	mapflag	battleground	2
guild_vs3	mapflag	nosave	SavePoint
guild_vs3	mapflag	nowarp
guild_vs3	mapflag	nowarpto
guild_vs3	mapflag	noteleport
guild_vs3	mapflag	nomemo
guild_vs3	mapflag	nopenalty
guild_vs3	mapflag	nobranch
guild_vs3	mapflag	noicewall

Hi all, based on this script, can someone help me to add and edit:

 

1. Announcement Player A has join the blue team and Player B has join the red team in battleground  in the whole server. We need another 2 player to begin the battle. #The script will detect how much player need based on waiting room.
2. Player A join blue team, Player B join red team, but when start auto shuffle to new team instead of same entered color ?