// https://rathena.org/board/topic/115861-woe-random-castle/
 
//  remember to disable these links
//== npc\guild\agit_controller.txt
//== npc\guild2\agit_start_se.txt
//== npc\re\guild3\agit_start_te.txt
 
function    script  F_ShuffleNumbers    {
    deletearray getarg(2);
    .@static = getarg(0);
    .@range = getarg(1) +1 - .@static;
    .@count = getarg(3, .@range);
    if (.@range <= 0 || .@count <= 0)
        return 0;
    if (.@count > .@range)
        .@count = .@range;
    for (.@i = 0; .@i < .@range; ++.@i)
        .@temparray[.@i] = .@i;
    for (.@i = 0; .@i < .@count; ++.@i) {
        .@rand = rand(.@range);
        set getelementofarray( getarg(2), .@i ), .@temparray[.@rand] + .@static;
        .@temparray[.@rand] = .@temparray[--.@range];
    }
    return .@count;
}
 
-   script  castle_randomize    -1,{
OnInit:
    setarray .castle$[0],
        "aldeg_cas01","aldeg_cas02","aldeg_cas03","aldeg_cas04","aldeg_cas05",
        "gefg_cas01","gefg_cas02","gefg_cas03","gefg_cas04","gefg_cas05",
        "payg_cas01","payg_cas02","payg_cas03","payg_cas04","payg_cas05",
        "prtg_cas01","prtg_cas02","prtg_cas03","prtg_cas04","prtg_cas05";
//  bindatcmd "cas", strnpcinfo(0)+"::OnDebug";
    end;
OnClock2100:
OnAgitInit:
    if ( gettime(DT_HOUR) != 21 ) end;
    agitstart;
    end;
OnClock2200:
    agitend;
    end;
OnAgitStart:
    // luckily 20/2 has no remainder
    if ( !getarraysize( $castle_random$ ) ) {
        callfunc "F_ShuffleNumbers", 0, 19, .@r;
        for ( .@i = 0; .@i < 20; ++.@i )
            $castle_random$[.@i] = .castle$[ .@r[.@i] ];
    }
    sleep 100;
    announce "The Castles open today are "+ getcastlename( $castle_random$[0] ) +" and "+  getcastlename( $castle_random$[1] ) +" !!", bc_woe;
    for ( .@i = 0; .@i < 20; ++.@i ) {
        if ( .castle$[.@i] != $castle_random$[0] && .castle$[.@i] != $castle_random$[1] ) {
            removemapflag .castle$[.@i], mf_gvg_castle;
            killmonster .castle$[.@i], "Agit#"+ .castle$[.@i] +"::OnAgitBreak";     
            gvgoff .castle$[.@i];
        }   
    }
    deletearray $castle_random$, 2;
//  for ( .@i = 0; .@i < 20; ++.@i )
//      announce (.@i +1) +". "+ .castle$[.@i] +" -> "+ getcastlename( .castle$[.@i] ), bc_all, ( ( getmapflag( .castle$[.@i], mf_gvg_castle ) )? 0x00FF00 : 0xFF0000 ) ;
    end;
OnAgitEnd:
    for ( .@i = 0; .@i < 20; ++.@i )
        if ( !getmapflag( .castle$[.@i], mf_gvg_castle ) )
            setmapflag .castle$[.@i], mf_gvg_castle;
    end;
OnDebug:
    switch ( atoi( .@atcmd_parameters$ ) ) {
    case 1: warp "aldeg_cas01",216,23; end;
    case 2: warp "aldeg_cas02",213,23; end;
    case 3: warp "aldeg_cas03",205,31; end;
    case 4: warp "aldeg_cas04",36,217; end;
    case 5: warp "aldeg_cas05",27,101; end;
    case 6: warp "gefg_cas01",197,181; end;
    case 7: warp "gefg_cas02",176,178; end;
    case 8: warp "gefg_cas03",244,166; end;
    case 9: warp "gefg_cas04",174,177; end;
    case 10: warp "gefg_cas05",194,184; end;
    case 11: warp "payg_cas01",139,139; end;
    case 12: warp "payg_cas02",38,25;   end;
    case 13: warp "payg_cas03",269,265; end;
    case 14: warp "payg_cas04",270,28;  end;
    case 15: warp "payg_cas05",30,30;   end;
    case 16: warp "prtg_cas01",197,197; end;
    case 17: warp "prtg_cas02",157,174; end;
    case 18: warp "prtg_cas03",16,220;  end;
    case 19: warp "prtg_cas04",291,14;  end;
    case 20: warp "prtg_cas05",266,266; end;
    default:
    }
    end;
}