Checking if the Player is Swimming In Lava

[Draco18s 2417]

I'm trying to detect when the player is swimming in lava (that is, currently in lava and holding the space bar) so that I can add a little extra upward motion when they try and jump out because of this problem.  I'm fine with lava being dangerous, I am not fine with making "falling in lava" an instant-death scenario if it's bubbling and burbling out smoke once in a while to fill the air around the lava to make it more dangerous (seriously: the smoke causes blindness and that's about it).

 

isJumping is private (and even with reflection, the value is false)

motionY is not helpful (I don't want to keep adding the upward velocity after they stop trying to swim upwards, but the player will still have positive Y motion)

can't just check for isInMaterial because those are already going to return true, regardless of if the player is trying to swim or not.

 

I'm at a loss.

[coolAlias 746]

Check Entity#handleLavaMovement() to return if in lava, and check if the player is pressing the space bar on the client side and send a packet to let the server know.

[Draco18s 2417]

Check Entity#handleLavaMovement() to return if in lava, and check if the player is pressing the space bar on the client side and send a packet to let the server know.

 

I found that function already, I was hoping to avoid needing a key handler.  Oh well. :\

[Draco18s 2417]

#$&%ing Key handlers.  Used this wiki page to get started.

 

Two problems that are immediately obvious:

1) I can't register a key that's already bound to something else (my bind takes precedence)

2) Going to options -> controls crashes the game with an unhelpful NPE

 

*Throws JAVA at the problem to make it go away*

Screw you Keybinder, TICK EVENTS AND KEYBOARD ACCESS!

[diesieben07 7706]

You don't need keybinds for this...

KeyInputEvent fires for every LWJGL Keyboard event (key release, key down).

In that event you can get what happened using the Keyboard.getEventKey / Keyboard.getEventKeyState methods. Then keep a static boolean in that class that remembers whether or not the key is down.

[Draco18s 2417]

KeyInputEvent

 

That was helpful, thanks.  Its hard to search for examples of key-stuff and not find Keybinds.

[coolAlias 746]

You probably are aware of this, but you can use Minecraft.getMinecraft().gameSettings.keyBindJump, for example, to get the vanilla key and check its getKeyCode() is equal to the key firing the KeyInputEvent - this way you are not checking for space bar explicitly and your code will always work properly, even people with game pads and such.

[Draco18s 2417]

You probably are aware of this, but you can use Minecraft.getMinecraft().gameSettings.keyBindJump, for example, to get the vanilla key and check its getKeyCode() is equal to the key firing the KeyInputEvent - this way you are not checking for space bar explicitly and your code will always work properly, even people with game pads and such.

 

I did what I could with this.  Slight problem:

The KeyInputEvent is not fired from mouse input.  You can bind jump to Mouse1, and it works as expected as far as vanilla is concerned; I do not know how to check for this situation for my purposes.  I also don't own a controller, so I am unable to test those.

[diesieben07 7706]

MouseInputEvent.

[Draco18s 2417]

Ah ha, of course.  Silly me.

 

Now to find a friend who owns a controller....