Get random items based on chance.

// The chance of getting any item in this list is that items chance out of '.chance'...
-    script    World_Drops    -1,{
    end;
OnNPCKillEvent:
    .@rnd = rand(.chance);
    if( getmonsterinfo( killedrid,1 ) ) {
        for( .@i = 0; .@i < getarraysize(.items); .@i+=3 ) {
            if( .@rnd < .items[.@i+2] ) {
                getitem .items[.@i], .items[.@i+1];

                .@remainder$ = .items[.@i+2] % 10000;
                .@division = (.items[.@i+2] * 100) / .chance;

                while ( getstrlen(.@remainder$) < 4 )
                    .@remainder$ = insertchar(.@remainder$, "0", 0);

                while ( charat(.@remainder$,getstrlen(.@remainder$)) == "0" && getstrlen(.@remainder$) > 2 )
                    delchar(.@remainder$,getstrlen(.@remainder$));

                .@display_chance$ = .@division +"."+ .@remainder$;
                dispbottom2 "Congratulations! Player "+ strcharinfo(0) +" has obtained "+ getitemname( .items[.@i] ) +" ["+ .items[.@i+1] +"] from "+ getmonsterinfo(killedrid, 0) +" (chance: "+.@display_chance$+"%).",0xFFFFFF;
            }
        }
    }
    end;


OnInit:
    .chance = 1000000;
    setarray .items[0],
        501,    1,    400,    //0.04%
        501,    1,    100,    //0.01%
        501,    1,    100,    //0.01%
        501,    1,    100,    //0.01%
        501,    1,    100,    //0.01%
        501,    1,    500,    //0.05%
        501,    1,    500,    //0.05%
        501,    1,    500,    //0.05%
        501,    1,    1,        //0.0001%
        501,    1,    1,        //0.0001%
        501,    1,    1,        //0.0001%
        501,    1,    1,        //0.0001%
        501,    1,    1        //0.0001%
        ;
    end;
}