Stuff

    public boolean calcSkillSuccess(L2Character player, L2Character target, L2Skill skill)
    {
        if(Config.ALT_GAME_SKILL_FORMULAS.equalsIgnoreCase("alt") ||
        	Config.ALT_GAME_SKILL_FORMULAS.equalsIgnoreCase("true"))
        	return calcAltSkillSuccess(player, target, skill);

    	SkillType type = skill.getSkillType();

    	boolean success = false;
    	int rate = 1;
    	int check = _rnd.nextInt(100);
        double modifier = 1;
        int value = 1;
    	int maxLevel = SkillTable.getInstance().getMaxLevel(skill.getId(),skill.getLevel());
	double pAtk, pDef, mAtk, mDef;
	
    	switch(type)
		{
    	case STUN:
    		// For normal Stun Attack, with skillType = STUN
		pAtk = player.getPAtk(target);
		pDef = target.getPDef(player);
		pDef = target.calcStat(Stats.STUN_RES,pDef,target,null);
		value = 30 * 100 + (int)(70 * 100 * ((float)skill.getLevel()/maxLevel));
		if (pDef > 0 && pAtk > 0)
		    value *= 0.6 * pAtk/pDef;
        	modifier    = 100 * target.getCON()/30;
    		break;
    	case CONFUSION:
    	case MUTE:
    	case PARALYZE:
		mAtk = player.getMAtk(target, skill);
		mDef = target.getMDef(player, skill);
		value = 30 * 100 + (int)(70 * 100 * ((float)skill.getLevel()/maxLevel));
		if (mDef > 0 && mAtk > 0)
		    value *= 0.6 * mAtk/mDef;
        	modifier    = 100 * target.getMEN()/15;
		//_log.fine(player.getName()+" matk:"+mAtk+",mdef="+mDef+",value="+value+",modifier="+modifier+",maxlevel="+maxLevel+",level="+skill.getLevel());
    		break;
    	case SLEEP:
		mAtk = player.getMAtk(target, skill);
		mDef = target.getMDef(player, skill);
		value = 30 * 100 + (int)(70 * 100 * ((float)skill.getLevel()/maxLevel));
		mDef = target.calcStat(Stats.SLEEP_RES,mDef,target,null);
		if (mDef > 0 && mAtk > 0)
		    value *= 0.6 * mAtk/mDef;
        	modifier    = 100 * target.getWIT()/15;
		//_log.fine(player.getName()+" matk:"+mAtk+",mdef="+mDef+",value="+value+",modifier="+modifier+",maxlevel="+maxLevel+",level="+skill.getLevel());
    		break;
    	case ROOT:
		mAtk = player.getMAtk(target, skill);
		mDef = target.getMDef(player, skill);
		value = 30 * 100 + (int)(70 * 100 * ((float)skill.getLevel()/maxLevel));
		mDef = target.calcStat(Stats.ROOT_RES,mDef,target,null);
		if (mDef > 0 && mAtk > 0)
		    value *= 0.6 * mAtk/mDef;
        	modifier    = 100 * target.getDEX()/30;
    		break;
    	default:
    		// For normal Stun attack with skillType = PDAM
        	pAtk = (int)skill.getPower();
		pDef = target.getPDef(player);
		pDef = target.calcStat(Stats.STUN_RES,pDef,target,null);
//		value = 30 * 100 + (int)(70 * 100 * ((float)skill.getLevel()/maxLevel));
		value = 100 * 100;
		if (pDef > 0 && pAtk > 0)
		    value *= 0.6 * pAtk/pDef;
        	modifier    = 100 * target.getCON()/30;
    		break;
		}

        if (modifier == 0)
        {
            _log.warning("Name: "+target.getName()+" has bad base stat value. Fix datapack or notify dp ppl");
            modifier = 1;
        }

        rate = ((player.getLevel() - target.getLevel()) + (int)(value / modifier));
	//_log.fine(player.getName()+" rate:"+rate);

    	if (rate > 100) rate = 100;
	else if (rate < 0)
		rate = 0;

	if (check > rate) success = false;
	else success = true;

    	return success;
    }

    public boolean calcAltSkillSuccess(L2Character player, L2Character target, L2Skill skill)
    {
        SkillType type = skill.getSkillType();
        boolean success = false;
        double rate = 0;
        int check = _rnd.nextInt(100);
        int skillLevelMod = skill.getLevel() / 10;
        int levelrange = ((player.getLevel() - target.getLevel()) + 4) * 2;
        
        switch(type)
        {
        case STUN:
            // For normal Stun Attack, with skillType = STUN
            rate = levelrange + skillLevelMod + (((player.getPAtk(target)*2) / target.getPDef(player)) * (( player.getCON() * 2.5) / target.getCON()) * 5.2);
            break;
        case SLEEP:
            rate = levelrange + skillLevelMod + (((player.getMAtk(target, skill)*2) / target.getMDef(player, skill)) * ((player.getWIT() * 2.5) / target.getWIT())*5);        
            break;
        case ROOT:
            rate = levelrange + skillLevelMod + (((player.getMAtk(target, skill)*2) / target.getMDef(player, skill)) * ((player.getDEX() * 2.5) / target.getDEX())*5);
            break;
        case PARALYZE:
            rate = levelrange + skillLevelMod + (((player.getMAtk(target, skill)*2) / target.getMDef(player, skill)) * ((player.getWIT() * 2.5) / target.getWIT())*5);
     break;
        default:
            // For normal Stun attack with skillType = PDAM
            rate = levelrange + skillLevelMod + (((player.getPAtk(target)*2) / target.getPDef(player)) * ((player.getCON() * 2.5) / target.getCON())*5.2);
            break;
        }
        
        if (rate > 100) rate = 100;
        else if (rate < 0)
            rate = 1;
        
        if (check > rate) success = false;
        else success = true;
        
        return success;
    }