[1.12.2] How to make lava-proof boat?

[lightningdragonx5]

This is my first time trying this out, so of course I have no idea if my approach is correct or not.

 

I want to make a boat that is lava proof. Basically, like a vanilla boat but it can be used on lava without sinking or being instantly destroyed.

 

I tried copy-pasting all of the code from EntityBoat, replacing all instances of "EntityBoat" with my class name (e.g. "EntityLavaBoat"), making it immune to fire (this.isImmuneToFire = true), and changing the "checkInWater" method so that it also returns true if in lava. The resulting boat floats on lava (good) and is not destroyed by it (good). However, for some reason it can't be steered on either water or lava (pushing it seems to work but that's it). (Note that it can still be ridden, just not moved by the rider.)

 

I tried just extending EntityBoat but all of the fields and important methods in that class are private. The most I can do is make the boat immune to fire in the constructor, which does stop it from being destroyed by lava. However, that doesn't stop the boat from sinking.

 

How would I go about doing this properly?

Edited January 10, 2019 by lightningdragonx5

[felinoid]

Your problem is that steering takes place in the player class:

    /**
     * Adds a value to a mounted movement statistic field - by minecart, boat, or pig.
     */
    private void addMountedMovementStat(double p_71015_1_, double p_71015_3_, double p_71015_5_)
    {
        if (this.isRiding())
        {
            int i = Math.round(MathHelper.sqrt(p_71015_1_ * p_71015_1_ + p_71015_3_ * p_71015_3_ + p_71015_5_ * p_71015_5_) * 100.0F);

            if (i > 0)
            {
                if (this.getRidingEntity() instanceof EntityMinecart)
                {
                    this.addStat(StatList.MINECART_ONE_CM, i);
                }
                else if (this.getRidingEntity() instanceof EntityBoat)
                {
                    this.addStat(StatList.BOAT_ONE_CM, i);
                }
                else if (this.getRidingEntity() instanceof EntityPig)
                {
                    this.addStat(StatList.PIG_ONE_CM, i);
                }
                else if (this.getRidingEntity() instanceof AbstractHorse)
                {
                    this.addStat(StatList.HORSE_ONE_CM, i);
                }
            }
        }
    }

I'm guessing you could inherit from EntityBoat and do some fancy reflection thing to access the things even though they're private, but I don't know anything about reflection yet so I can't help you with that.

[crackedEgg]

you can look at this code I use to steer the parachute and adopt it to steer the boat

EntityParachute.java

ParachuteInputEvent.java

[Cadiboo]

You could probably just make an entity that extends entity boat, add "this.isImmuneToFire = true" to the constructor and add lava to everywhere water is referenced

[felinoid]

1 hour ago, Cadiboo said:

You could probably just make an entity that extends entity boat, add "this.isImmuneToFire = true" to the constructor and add lava to everywhere water is referenced

OP already tried that.

[lightningdragonx5]

14 hours ago, crackedEgg said:

you can look at this code I use to steer the parachute and adopt it to steer the boat

EntityParachute.java

ParachuteInputEvent.java

Thanks for this, helped a lot. Was able to get it to steer, so it functionally works just fine now.

 

11 hours ago, Cadiboo said:

You could probably just make an entity that extends entity boat, add "this.isImmuneToFire = true" to the constructor and add lava to everywhere water is referenced

Already tried this, it stopped the boat from being destroyed but it didn't let me steer initially until I added steering code (provided above). Once that was done it worked fine.

Edited January 11, 2019 by lightningdragonx5