Minecarts Kills when they run over mobs or player

Plugin category: mech

Suggested name: Don't stand on the rails

A bit about me: I holding a server upp and the bigest problem I have is that i can't dev plugins for my own server

What I want: I'd like to have a plugin that kills all the mobs and the player that stand in the way and the minecart will keep going ​

Ideas for commands: Mabey turn on and off

Ideas for permissions: I don't know
It should be compatible with pex

When I'd like it by: I have a long time before i got the rail done.​

Similar plugin requests: None.

Devs who might be interested in this: I don't know​

 

I could do this. May take me a few days as I don't have a lot of time to code.

 

Thx for the fast answare I can w8 It's not so importent just now I need it when I am done with my bridge on 30k blocks long have 13k left

 

lol, like it

 

this isnt as easy as you think. This require alot of velocity math and figuring each and every direction of the cart. I know this for a fact becuase ive been trying to make a plugin like this. I would recommend you ask a highly experienced developer to make this.

 

Why is it so hard? You just use the VehicleEntityCollisionEvent?

 

I'll give it a look

 

I'm pretty sure that this event will be called even when both a cart pushes a player and a player pushes a cart. If a player pushes a cart, he obviously shouldn't die. This is why you have to use vectors to make sure the cart is moving in the direction of the player, and possibly going fast enough.

 

I haven't worked on it since yesterday, but it did not seem like it was calling the event until a player was already in the cart. I'll have to do some more testing, but it looked like it was only being called when one was in the cart.

Edit: It is definitely not calling the event when the player pushes the cart. I believe it requires a passenger to be in the cart. The only thing you have to be careful about is when an animal is in the cart...

 

Guess you're gonna just have to use VehicleMoveEvent and use getNearbyEntities. Sucks tho..

 

No. What I meant was that VehicleEntityCollisionEvent is what I want. All I have to do is get the entity that it collided with (event.getEntity) and kill it. I am also planning on sending the passenger a message if they run over something/someone.

 

yea it detects the collision but if you dont set the cart to stay continuous it just goes the opposite way after impact.

 

That's true. I will need to fix that.

 

Seems to me you would need to:
1. Is the vehicle a minecart?
2. Is the minecart moving fast enough?
3. If the entity is not a living entity then apply the minecart vector to it or destroy or something.
4. If the entity is a living entity then get the entity's health.
5. Do X damage to the entity.
6. Is the entity dead now?
7. If it is not, do nothing, if it is, then multiply the velocity vector by -1 to prevent the cart from reversing directions. You could also cancel the collision event if you wanted to.

 

1. Done
2. It seems like the person wanted the minecart to kill them any time, not just at top speed
3. Done
4. Figuring out
5. Seemed like they wanted it to kill them, not hurt them
6. N/A
7. N/A

 

Just wanted to post to say thumbs up. I hate people that stand on minecart tracks. Some people might think this is mean, but, you know, Darwinism is a great teaching method ;D

 

Yea i want so it kill's on any speed

 

Just as an update, the plugin is almost done.

Done:

Carts run over mobs and players, and kill them.
Carts continue in the direction they are going.

Not Done:

Command

Bugs:

When a cart is going at a 45 degree angle downwards, the cart will reverse the direction upon collision. Otherwise the cart continues forward.

The items on the track are not getting removed. This is actually not my fault, as it is a bug with Bukkit, so I can't do anything about this.

Do you want me to upload the plugin now, and I'll update it as I fix things?

Note: I think this is a fun plugin because I feel like a bowling ball knocking over mobs =)

 

Yea you can uppload it if you wan't

 

Here you go!

http://dev.bukkit.org/server-mods/dont-stand-rails/

 

Thx alot it working very good

When i goin the direction f:1 the minecart turn around but at the dirretion f: 3 it working

it's kill the mob but the cart change diretion

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I don't understand. What direction are you going in? I said it still turns around when going down hill. Other than that it seemed to work.

 

I don't understand why this is so complicated, shouldn't you be able to identify the mob, see if its a living entity, and if the Entity inside the cart is an instance of player do:

1) Kill the entity that triggered the VehicleEntityCollisionEvent
2) cancel the VehicleEntityCollisionEvent.

The collision occurs, you take special action (killing what you ran over) then just cancel the event so it was as if it never collided with anything (hence, keeps traveling happy along it's way).

Sometimes things sound more simplified then they are, but all the talk of velocity comparisons seems entirely overkill for something this simple.

Has someone tried something this simple to see if it works?

 

if you click on F3 in minecraft you will se there it will stand a F:1-4 and if you did turn around the diretion f:1

The number is like

• 0 = South
• 1 = West
• 2 = North
• 3 = East

 

I tried that, but sometimes the minecart still stops. I don't know why, but I figured a way to do it.

Sandia

Are you saying that when its going South the minecarts turn around?

Edit: I found the problem. I told it to teleport the entity 2 blocks in a direction. (x-2 or something). What happens is the entity is getting pushed forward, but it is getting pushed in the way of the cart, so its the item which is stopping the cart, not the entity. Thats why its stopping and not reversing directions. I will either put a check so that it always teleports the mob to the side of the tracks, or wait until they fix the problem with the VehicleEntityCollisionEvent not firing when it runs into items.

 

No when it going east it turn around when it hit a mob

 

Hmm, even though the entity is "dead" it still takes it a few seconds to fall over then disapear, maybe that small window from when it's killed to when it's deleted creates a small window where the cart can still impact the falling corpse.

Just for experimentation sake, have you thought of knocking back the mob in the direction the cart is traveling right before killing it, then canceling the event? So its as if the cart nailed the mob, sent it flying, and while in mid air it dies...

If you ask me this is worth trying because:
1) it drastically simplifies things
2) it would add an "impact" effect, sending the mob flying (which is funny)
3) it moves the mob entity out of the way of the cart before the cart attempts to move, so even if it's not fully dead it won't block/reflect the cart.

Again, I am completely speculating, but what I have suggested would take only seconds to implement, and if it works would make life a great deal easier...

Just food for thought, good luck with what ever path you take!

 

sorry it was f:1 west i mean. I did say f:3

 

I actually did what you suggested, but I cancelled the event before hitting the mob, so that may be the problem.

 

This sounds like a paradox...

Can you explain this better, because from my perspective this is a logical impossibility. The event is triggered by hitting the mob, so you can't cancel it before hitting the mob because you must first hit the mob for the event to ever be trigger to be canceled.

1) collide event
2) get hit mob
3) get direction cart facing
4) apply velocity to hit mob
5) kill hit mob
6) cancel event

are you doing it in this order, if so I don't see how what you are saying above can be true?

hmm, after thought... This all occurs in one tick, so I think what you need to do is put a timer between when you apply the velocity and when you kill it. Apply the velocity, start a 1 second timer, and at the end of that timer kill the creature. Doing it this way will give it plenty of time to acelerate from the cart impact and move out of the way, then die... I think the way we had it before it just died the exact same second we applied the velocity, aka falling right where it stood anyways.

Just some ideas to try, good luck!