Cannons

Table of Contents

What can it do?

Cannons is a highly configurable plugin which allows you to fire block build cannons. It is possible to aim and load different amounts of gunpowder to hit targets at different ranges. The power of redstone makes it possible to set the gun to auto load and activate the rapid fire mode. Choose your projectile from a broad spectrum of cannonballs and smash the enemy.

With Cannons 2.0 you are also able to design your own cannons using .schematic files and give each cannon their own settings, as well as different types of projectiles.

Features

Build a cannon out blocks
Design your own cannon and save it as .schematic
Design and fire different projectiles to smash your enemy
Use redstone to fire guns from distance
Rapid fire with auto-load possible
Destroyed blocks can be restored with CreeperHeal (if 'custom' option is true)
Cannons will stay load and aligned due to the database
Movement plugins (e.g. Movecraft) are supported if a cannon has a sign to store a tag
API for ships plugins (e.g. iSails) to use cannons on ships without signs.

Videos

by ServerMiner

by wickedbrother

Out-dated showcase 1
Out-dated showcase 2

Recommended plugins

ObsidianDestroyer
WorldGuard (flag protection: '/region flag NAME other-explosion deny')
CreeperHeal (set 'custom explosion' for your world to repair cannon damage)

Installation

Install WorldEdit first (don't forget this)
Copy the cannons.jar into your Bukkit's "plugins" directory, then run the server.

Dependencies

This plugin requires:

WorldEdit

Metrics

This plugin utilises Hidendra's plugin metrics system, which means that the following information is collected and sent to mcstats.org:

A unique identifier
The server's version of Java
Whether the server is in offline or online mode
The plugin's version
The server's version
The OS version/name and architecture
The core count for the CPU
The number of players online
The Metrics version If you wish to disable this feature (/me cries), you can do so by opt-ing out, which you can do in the config file under /plugins/PluginMetrics/

Information for Cannons 2.x

Tutorial:

Cannons Tutorial
Developers Guide

Additional information:

Cannon Designs

Share your designs with other people: Cannon Designs

Known Bugs

The cannon ball (snowball) becomes invisible after 60 blocks but hits the target.
Voxelsniper will delete Buttons/Torches when you load the gun (be careful when you click the barrel)

Need Help?

Credits

Raser4000
DreTax
JlJlJl
and many more

Comments

DerPavlov
- Join Date: 3/4/2012
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#1518 DerPavlov

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Posted Mar 15, 2016
@FabTheZen I missed that one on the last release. It is already fixed and I will upload the new version tomorrow.

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_ForgeUser20336203
- Join Date: 5/18/2015
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#1517 _ForgeUser20336203

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Posted Mar 12, 2016
Plugin works fine, but I'm having unnecessary entries on console every time someone clicks a block. These are examples: [...] [02:16:54 INFO]: event block [02:16:55 INFO]: target block [...] It becomes very spammy, so I'd love if you were able to hide these features, at least when debug mode is off. Thank you

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DerPavlov
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#1516 DerPavlov

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Posted Mar 6, 2016
I uploaded a new version for 1.9.

Spigot has a few troubles with the new offhand system, but it will be resolved soon. For now keep something in your offhand, to prevent the cannon from turning all the time.

You have to updated your design and projectiles folder for the new sound system.
Cannon Design
Projectile

Last edited by DerPavlov: Mar 6, 2016

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DerPavlov
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#1515 DerPavlov

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Posted Mar 5, 2016
@galacticwarrior I am currently testing a working version of Cannons. The largest problem was the new names for the sounds. That is now fixed.

Thanks for all your support.

Pavlov

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_ForgeUser10637447
- Join Date: 2/26/2013
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#1514 _ForgeUser10637447

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Posted Mar 3, 2016
@DerPavlov

Hi, The error with getOnlinePlayers() can be fixed by patching the plugin with Spigot's SpecialSource for now (see https://www.spigotmc.org/threads/minecraft-1-9-release.127186/), but the method was removed I think so it should be replaced in the long run.

The other errors are because of changes to the sound enum; sound names changed in 1.9 so they need to be updated too.

Hope this helps!

Last edited by _ForgeUser10637447: Mar 3, 2016

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DerPavlov
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#1513 DerPavlov

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Posted Mar 2, 2016
@GodsDead Hi, I am currently ill but will fix the problem as soon as possible. DrkMatr1984 already provided some fixes, but I am unable to test it at the moment.

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GodsDead

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#1512 Posted Mar 1, 2016

Yeah can confirm that Cannons is broken with 1.9

[22:43:35] [Craft Scheduler Thread - 4/WARN]: org.apache.commons.lang.UnhandledException: Plugin Cannons v2.3.8 generated an exception while executing task 86
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
	at at.pavlov.cannons.mcstats.MetricsLite.postPlugin(MetricsLite.java:287)
	at at.pavlov.cannons.mcstats.MetricsLite.access$200(MetricsLite.java:53)
	at at.pavlov.cannons.mcstats.MetricsLite$1.run(MetricsLite.java:175)
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftTask.run(CraftTask.java:71)
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
	... 3 more

[22:43:35] [Craft Scheduler Thread - 2/WARN]: Exception in thread "Craft Scheduler Thread - 2" 
[22:43:35] [Craft Scheduler Thread - 2/WARN]: org.apache.commons.lang.UnhandledException: Plugin ChunkSpawnerLimiter v3.0.4 generated an exception while executing task 9
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
	at org.mcstats.Metrics.postPlugin(Metrics.java:357)
	at org.mcstats.Metrics.access$4(Metrics.java:350)
	at org.mcstats.Metrics$1.run(Metrics.java:245)
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftTask.run(CraftTask.java:71)
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
	... 3 more

Robotnikrobotnik

Join Date: 6/19/2012
Posts: 374
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#1511 Posted Feb 29, 2016

Just to let you know, after updating to spigot 1.9, the console keeps spamming this error message over and over, right after the server started

[04:01:48] [Server thread/WARN]: [Cannons] Task #33 for Cannons v2.3.6 generated an exception
java.lang.NoSuchFieldError: SUCCESSFUL_HIT
	at at.pavlov.cannons.utils.CannonsUtil.playErrorSound(CannonsUtil.java:634) ~[?:?]
	at at.pavlov.cannons.Aiming.updateSentryMode(Aiming.java:504) ~[?:?]
	at at.pavlov.cannons.Aiming.access$100(Aiming.java:31) ~[?:?]
	at at.pavlov.cannons.Aiming$1.run(Aiming.java:99) ~[?:?]
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot.jar:git-Spigot-7d15d07-c194444]
	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot.jar:git-Spigot-7d15d07-c194444]
	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:724) [spigot.jar:git-Spigot-7d15d07-c194444]
	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot.jar:git-Spigot-7d15d07-c194444]
	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:655) [spigot.jar:git-Spigot-7d15d07-c194444]
	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:554) [spigot.jar:git-Spigot-7d15d07-c194444]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

DerPavlov
- Join Date: 3/4/2012
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#1510 DerPavlov

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Posted Feb 11, 2016
@jedk1 Your pastie link does not work for me. Can you upload it somewhere else?

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_ForgeUser6967034
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#1509 _ForgeUser6967034

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Posted Feb 11, 2016
hey I've been having an issue every time a cannon is deleted it throws an error: http://pastie.org/10717869 Been a fun plugin to use so far though so good job :D

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_ForgeUser18193091
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#1508 _ForgeUser18193091

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Posted Dec 28, 2015
@DerPavlov

Yeah,I set the cobblestone name and lores just like what you told me.But either the "test" cobblestone and normal cobblestone can't load.

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DerPavlov
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#1507 DerPavlov

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Posted Dec 27, 2015
@NOBUTSS I used 'simple rename' and added:

a name '/setname test'
first lore '/addlore a1'
second lore '/addlore a2'

The default cobblestone config was edited to:

loadingItem: 'COBBLESTONE:0:test:a1:a2'

Let me know if I missed something.
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_ForgeUser18193091
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#1506 _ForgeUser18193091

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Posted Dec 26, 2015
Why this do not work?
loadingItem: 'COBBLESTONE:0:test:a1:a2'
Last edited by _ForgeUser18193091: Dec 26, 2015

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Forge_User_51989634
- Join Date: 4/23/2012
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#1505 Forge_User_51989634

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Posted Dec 19, 2015
@DerPavlov

Im sure that different config per world, probably would be the most effecient way to do it :)!

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DerPavlov
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#1504 DerPavlov

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Posted Dec 13, 2015
@XxNaelxX Copy and rename one of the default projectiles.yml in plugins/Cannons/projectiles. Change the loadingItem to:

loadingItem: 'SKULL_ITEM:1'

EDIT: Somehow your question changed :)

Second answer: You can set 'fireAfterLoading'. The cannon will fire when the cannon is loaded (and the projectile pushed, if required). The cannon will not fire automatically if you are sneaking while loading. But it is not owner specific.
Last edited by DerPavlov: Dec 13, 2015

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_ForgeUser12286077
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#1503 _ForgeUser12286077

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Posted Dec 13, 2015
is there a way to make it fire automatically except at its owner?

Last edited by _ForgeUser12286077: Dec 13, 2015

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DerPavlov
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#1502 DerPavlov

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Posted Dec 9, 2015
@nashoxx There seems to be a divide by zero error while calculating the cannonball velocity. Can you check if your 'maxLoadableGunpowder' is >= 1.

To disable gunpowder use 'needsGunpowder: False'

You can always send me your design files, I will have a look and try find the problem.

Last edited by DerPavlov: Dec 9, 2015

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_ForgeUser11682111
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#1501 _ForgeUser11682111

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Posted Dec 9, 2015
I've been trying for several days to add a new custom type of cannon. The results are the same as always, the thing just throws a shit ton of errors in the console. I don't know what I'm doing wrong. I have the schematic, and the .yml file with the same name as the schematic, I load the plugin and I can actually create the schematic. but at the moment of firing nothing fires and when I try to positionate again the cannon to fire it throws a shit ton of errors. I configurated the thing so it doesn't need to use gunpowder or that stick thing to push or clean the barrel. So it just needs the projectile. I'm testing this thing with the cobblestone projectiles which I just modified so it doesn't damages the terrain. Still, I haven't been able to fire a single time. These are the erros I get:

I'm using Spigot 1.8.8

[15:31:52] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to Cannons v2.3.8 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:228) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PlayerInteractManager.interact(PlayerInteractManager.java:463) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:759) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:52) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:1) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_45] at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_45] at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at java.lang.Thread.run(Unknown Source) [?:1.8.0_45] Caused by: java.lang.ArithmeticException: / by zero at at.pavlov.cannons.cannon.Cannon.getCannonballVelocity(Cannon.java:1441) [?:?] at at.pavlov.cannons.cannon.Cannon.getAimingVector(Cannon.java:1395) [?:?] at at.pavlov.cannons.Aiming.showAimingVector(Aiming.java:995) [?:?] at at.pavlov.cannons.Aiming.updateAngle(Aiming.java:246) [?:?] at at.pavlov.cannons.Aiming.changeAngle(Aiming.java:131) [?:?] at at.pavlov.cannons.listener.PlayerListener.PlayerInteract(PlayerListener.java:446) [?:?] at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source) [?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [?:1.8.0_45] at java.lang.reflect.Method.invoke(Unknown Source) [?:1.8.0_45] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] ... 17 more [15:31:53] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to Cannons v2.3.8 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:228) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PlayerInteractManager.interact(PlayerInteractManager.java:463) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:759) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:52) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:1) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_45] at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_45] at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] at java.lang.Thread.run(Unknown Source) [?:1.8.0_45] Caused by: java.lang.ArithmeticException: / by zero at at.pavlov.cannons.cannon.Cannon.getCannonballVelocity(Cannon.java:1441) [?:?] at at.pavlov.cannons.cannon.Cannon.getAimingVector(Cannon.java:1395) [?:?] at at.pavlov.cannons.Aiming.showAimingVector(Aiming.java:995) [?:?] at at.pavlov.cannons.Aiming.updateAngle(Aiming.java:246) [?:?] at at.pavlov.cannons.Aiming.changeAngle(Aiming.java:131) [?:?] at at.pavlov.cannons.listener.PlayerListener.PlayerInteract(PlayerListener.java:446) [?:?] at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source) [?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [?:1.8.0_45] at java.lang.reflect.Method.invoke(Unknown Source) [?:1.8.0_45] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) [spigot-1.8.8.jar:git-Spigot-5f38d38-18fbb24] ... 17 more

Last edited by _ForgeUser11682111: Dec 9, 2015

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DerPavlov
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#1500 DerPavlov

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Posted Nov 15, 2015
@GodsDead I started a section in github for this, but I did not add a link to the bukkit page. Therefore, not shared designs so far.
https://github.com/DerPavlov/Cannons/wiki/Designs

@Unpluggeddk I get the idea, but at the moment there is no such feature in Cannons. How is this done in other plugins: Different Config per world or just different settings per world?
Let me know what would be easier for you.

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Forge_User_51989634
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#1499 Forge_User_51989634

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Posted Nov 15, 2015
Hi mate, love ur plugin, hoped u could help me a bit.

Am i blind or is it possible to set the cost of creating a cannon to be different per world. Im making a game with ur plugin, but in this game it shuldnt cost anything to make a cannon.

But in my Main world it shuld cost something.

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Project ID

37184
Created

Mar 4, 2012
Last Released File

Nov 13, 2021
Total Downloads

133,565
License

GNU General Public License ver...

Bukkit

Cannons

Bukkit Plugins

Cannons

Table of Contents

What can it do?

Features

Videos

Recommended plugins

Installation

Dependencies

Metrics

Information for Cannons 2.x

Known Bugs

Need Help?

Credits

Comments

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