Determine if an Item is an Instance of a Class [1.8.9][SOLVED]

[Athire]

Hello all!

 

Me again! It's been awhile but I'm continuing on with my mod. Here's my dilemna:

 

I have a tool class that is going to be used to create 7 or 8 different instances of that tool with different properties (below).

 

//This will be the basic bone dagger class, used to create all tiers of necromancer dagger.

public class simpleBoneDagger extends ItemSword

{

public int buffAmount;

 

public simpleBoneDagger(String unlocalizedName, ToolMaterial material, int buffVal) {

super(material);

this.setUnlocalizedName(unlocalizedName);

this.buffAmount=buffVal;

}

 

}

 

In particular, the material and the buffVal will differ between instances of this class. My goal is that when a player has this weapon in hand, it increases an extended player property by the buffVal. My issue is I don't want to check player.getCurrentEquippedItem().getItem() 7 or 8 times to hit every tool. Is there a way to check if an item is one of the various instances of a class like that? I've been looking but haven't come across anything yet.

 

The other issue I run into is that I need the buffVal of the particular instance of the class the player has equipped. Is there an easy way to get that without hard coding in every value and comparing 8 times?

 

Here is some pseudocode to illustrate what I mean:

 

 

//If magic weapon equipped, increase max mana;

if(this.player.getCurrentEquippedItem() != null)

{

Item item= this.player.getCurrentEquippedItem().getItem();

if(item == <instance of simpleBoneDagger class>)

{      //check if weapon was just equipped, or has been in hand for a while

if(this.prevWeapon == false && this.weaponEquiped == true)

{

this.prevWeapon = true;

 

this.maxMana += <Particular instance of class>.buffVal;

}

}

 

 

Thanks in advance for any help you guys can provide! I'm trying to code this smartly (for a change  ) and it's throwing me for a loop!

[SanAndreaP]

Use instanceof and casting:

if item instanceof SimpleBoneDagger then
    mana += ((SimpleBoneDagger) item).buffVal

 

PS: I suggest you use the official code conventions: http://www.oracle.com/technetwork/java/codeconventions-135099.html

esp. on your class names (SimpleBoneDagger instead of simpleBoneDagger)

[jeffryfisher]

If the OP needs to check for a particular instance (one with a particular buf value), then one needs more than a class check.

 

I suppose the value could be copied into the player, which in recent versions would utilize the capability system. I'm not sure about 1.8.9; it might have been using extended entity properties. If 1.8.9 is the old way, then the mod might want to upgrade to 1.10.2 or 1.11 before coding in an obsolete paradigm.

[Athire]

Thank you guys! SanAndreasP's solution seems to have worked. I was sure there must be a way to do that, but Java isn't my Forte so wasn't sure of the syntax. On the convention note, I learned camelCase (as opposed to CamelCase) at my university for other languages and it's become a bit of a bad habit. I'll try to get better at sticking to the java coding conventions

 

Thanks again, you guys rock! Marking as solved!

[jeffryfisher]

On the convention note, I learned camelCase (as opposed to CamelCase) at my university

 

You mean "TitleCase"?