How to Change to Random Reward

[skymia]

//===== Hercules Script ===========================================
//= King of Emperium Hill
//===== By: =======================================================
//= AnnieRuru
//===== Current Version: ==========================================
//= 1.1
//===== Compatible With: ==========================================
//= hercules 2015-12-19
//===== Description: ==============================================
//= defends the emperium in the middle of the map until times up
//===== Topic =====================================================
//= http://hercules.ws/board/topic/4495-gvg-king-of-emperium-hill/
//===== Additional Comments: ======================================
//= Finally there is a topic for this !
//=================================================================

-	script	KoE	FAKE_NPC,{
OnInit:
	disablenpc "The King#KoE";
	disablenpc "Exit#KoE";
	bindatcmd "koe", strnpcinfo(0)+"::OnCommand", 99,100;
	end;
OnCommand:
	if ( compare( .@atcmd_parameters$, "on" ) ) goto L_start;
	else if ( compare( .@atcmd_parameters$, "off" ) ) goto L_end;
	else {
		dispbottom "type - '@koe on' to start the event";
		dispbottom "type - '@koe off' to end the event";
	}
	end;
L_start:
OnClock2000: // everyday 8pm starts
	if ( .start ) end;
	gvgon "guild_vs1";
	announce "The King of Emperium Hill has begun!", bc_all;
	.start = true;
	enablenpc "The King#KoE";
	disablenpc "Exit#KoE";
	$koegid = 0;
	donpcevent "::OnRevKoE";
	maprespawnguildid "guild_vs1", $koegid, 3;
	killmonster "guild_vs1", "KoE::OnEmpDead";
	monster "guild_vs1",49,49,"EMPERIUM",1288,1,"KoE::OnEmpDead";
	end;
L_end:
OnClock2030: // everyday 8:30pm ends
	gvgoff "guild_vs1";
	announce "The King of Emperium Hill is over!", bc_all;
	.start = 0;
	enablenpc "Exit#KoE";
	disablenpc "The King#KoE";
	killmonster "guild_vs1", "KoE::OnEmpDead";
//	maprespawnguildid "guild_vs1", $koegid, 2; // uncomment this line to kick non-owner off the map when event ends
	end;
OnEmpDead:
	$koegid = getcharid(2);
	announce "The current King of Emperium Hill is the ["+ strcharinfo(2) +"] guild.", bc_all;
	donpcevent "::OnRevKoE";
	maprespawnguildid "guild_vs1", $koegid, 2;
	killmonster "guild_vs1", "KoE::OnEmpDead";
	sleep 500;
	if ( .start )
		monster "guild_vs1",49,49,"EMPERIUM",1288,1,"KoE::OnEmpDead";
	end;
}

// KoE Entrance
prontera,147,187,4	script	The King#KoE	1_FLAG_LION,{
	mes "[The King]";
	if ( !getcharid(2) ) {
		mes "You must have a guild to participate in the ^FF0000King of Emperium Hill Tournament^000000.";
		close;
	}
	mes "Hello.";
	mes "Would you like to participate in the ^FF0000King of Emperium Hill Tournament^000000?";
	if ( select ( "Yes", "No" ) == 2 ) close;
	if ( !getvariableofnpc( .start, "KoE" ) ) close;
	switch( rand(1,4) ){
	case 1:	warp "guild_vs1", 50, 88; end;
	case 2:	warp "guild_vs1", 88, 50; end;
	case 3:	warp "guild_vs1", 50, 11; end;
	case 4:	warp "guild_vs1", 11, 50; end;
	}
}

// KoE Exit
guild_vs1,49,56,5	script	Exit#KoE	1_M_BARD,{
	mes "[Exit]";
	mes "See ya.";
	close2;
	warp "Save",0,0;
	if ( getcharid(2) == $koegid )
		getitem 30090,1; // configure prize here
	end;
}

// Flags
guild_vs1,49,38,4	script	King of Emperium Hill#1::koe_flag	GUILD_FLAG,{
	if ( !$koegid ) end;
	mes "[King of Emperium Hill]";
	mes "The Current King of Emperium Hill is the ["+ getguildname($koegid) +"] guild.";
	close;
//OnInit: // Uncomment this line to make the emblem stay after @reloadscript
OnRevKoE:
	flagemblem $koegid;
	end;
}
guild_vs1,61,49,6	duplicate(koe_flag)	King of Emperium Hill#2	GUILD_FLAG
guild_vs1,38,49,2	duplicate(koe_flag)	King of Emperium Hill#3	GUILD_FLAG
guild_vs1,49,61,0	duplicate(koe_flag)	King of Emperium Hill#4	GUILD_FLAG

guild_vs1	mapflag	nobranch
guild_vs1	mapflag	nomemo
guild_vs1	mapflag	nopenalty
guild_vs1	mapflag	noreturn
guild_vs1	mapflag	nosave	SavePoint
guild_vs1	mapflag	noteleport
guild_vs1	mapflag	gvg_noparty
guild_vs1	mapflag	nowarp
guild_vs1	mapflag	nowarpto
guild_vs1	mapflag	guildlock

 

// KoE Exit
guild_vs1,49,56,5	script	Exit#KoE	1_M_BARD,{
	mes "[Exit]";
	mes "See ya.";
	close2;
	warp "Save",0,0;
	if ( getcharid(2) == $koegid )
		getitem 30090,1; // configure prize here
	end;

How to change into random reward item?

i want to put castle drops like ripple, billow, esg, wrath of valk, etc. But in 2 sets the hard one is 30-40% chance and the other is 60-70% just lng in bts quest random but in a chance setup

thanks in advance

Edited March 5, 2018 by skymia