Add integration for dynmap

By integrating with dynmap the plugin can show the area of the generation task for each world via an area marker and
triggers the rendering of tiles for generated chunks.

README.md

@@ -12,6 +12,15 @@ is lower than 2 (configurable).
 - [Sqlite JDBC](https://bitbucket.org/xerial/sqlite-jdbc/) - Database Driver for JDBC
 - [bStats](https://bstats.org/) - Statistical Insights
 
+## Features
+
+- Pregeneration of a specific area around the world center
+- Configuration of world centers
+- Integration into dynmap
+- Teleportation to chunks
+- Auto-Pause/Resume on player join/leave
+- Highly configurable
+
 ## Installing
 
 Just download the jar from the latest release and place it into the servers plugins folder.
@@ -66,6 +75,14 @@ All features can be accessed with the command `/chunkmaster` or the aliases `/ch
 # For built-in support please create a PullRequest with your translation.
 language: en
 
+# Actiates/deactivates the dynmap integration.
+# With the setting set to 'true' the plugin tries to trigger the rendering
+# of generated chunks right before unloading them. It also adds an area
+# marker to the dynmap to show the area that will be pregenerated.
+# The marker is removed automatically when the task is finished or canceled.
+# The value should be a boolean <true/false>
+dynmap: true
+
 generation:
 
   # If set to true the plugin ignores the vanilla world border and doesn't stop

build.gradle

@@ -42,6 +42,11 @@ repositories {
         name 'CodeMc'
         url 'https://repo.codemc.org/repository/maven-public'
     }
+
+    maven {
+        name 'mikeprimm'
+        url 'http://repo.mikeprimm.com'
+    }
 }
 
 dependencies {
@@ -49,6 +54,7 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     testCompile group: 'junit', name: 'junit', version: '4.12'
     compileOnly "com.destroystokyo.paper:paper-api:1.14.4-R0.1-SNAPSHOT"
+    compileOnly "org.dynmap:dynmap-api:2.0"
     compile group: 'org.xerial', name: 'sqlite-jdbc', version: '3.28.0'
     compile "io.papermc:paperlib:1.0.2"
     compile "org.bstats:bstats-bukkit:1.5"

src/main/kotlin/net/trivernis/chunkmaster/Chunkmaster.kt

@@ -8,6 +8,8 @@ import net.trivernis.chunkmaster.lib.SqliteManager
 import org.bstats.bukkit.Metrics
 import org.bukkit.plugin.java.JavaPlugin
 import org.bukkit.scheduler.BukkitTask
+import org.dynmap.DynmapAPI
+import org.dynmap.DynmapCommonAPI
 import java.lang.Exception
 
 class Chunkmaster: JavaPlugin() {
@@ -15,6 +17,8 @@ class Chunkmaster: JavaPlugin() {
     lateinit var generationManager: GenerationManager
     lateinit var langManager: LanguageManager
     private lateinit var tpsTask: BukkitTask
+    var dynmapApi: DynmapAPI? = null
+        private set
     var mspt = 20      // keep track of the milliseconds per tick
         private set
 
@@ -29,6 +33,9 @@ class Chunkmaster: JavaPlugin() {
 
         langManager = LanguageManager(this)
         langManager.loadProperties()
+
+        this.dynmapApi = getDynmap()
+
         initDatabase()
         generationManager = GenerationManager(this, server)
         generationManager.init()
@@ -75,6 +82,7 @@ class Chunkmaster: JavaPlugin() {
         config.addDefault("generation.ignore-worldborder", false)
         config.addDefault("database.filename", "chunkmaster.db")
         config.addDefault("language", "en")
+        config.addDefault("dynmap", true)
         config.options().copyDefaults(true)
         saveConfig()
     }
@@ -92,4 +100,14 @@ class Chunkmaster: JavaPlugin() {
             logger.warning(langManager.getLocalized("DB_INIT_EROR", e.message!!))
         }
     }
+
+    private fun getDynmap(): DynmapAPI? {
+        val dynmap = server.pluginManager.getPlugin("dynmap")
+        return if (dynmap != null && dynmap is DynmapAPI) {
+            logger.info(langManager.getLocalized("PLUGIN_DETECTED", "dynmap", dynmap.dynmapVersion))
+            dynmap
+        } else {
+            null
+        }
+    }
 }

src/main/kotlin/net/trivernis/chunkmaster/commands/CmdReload.kt

@@ -27,6 +27,7 @@ class CmdReload(private val chunkmaster: Chunkmaster): Subcommand {
         chunkmaster.generationManager.stopAll()
         chunkmaster.reloadConfig()
         chunkmaster.generationManager.startAll()
+        chunkmaster.langManager.loadProperties()
         sender.sendMessage(chunkmaster.langManager.getLocalized("CONFIG_RELOADED"))
         return true
     }

src/main/kotlin/net/trivernis/chunkmaster/lib/generation/GenerationTask.kt

@@ -3,16 +3,20 @@ package net.trivernis.chunkmaster.lib.generation
 import net.trivernis.chunkmaster.Chunkmaster
 import net.trivernis.chunkmaster.lib.Spiral
 import org.bukkit.Chunk
+import org.bukkit.Location
 import org.bukkit.World
+import kotlin.math.*
+
 /**
  * Interface for generation tasks.
  */
-abstract class GenerationTask(plugin: Chunkmaster, centerChunk: ChunkCoordinates, startChunk: ChunkCoordinates) :
+abstract class GenerationTask(plugin: Chunkmaster, private val centerChunk: ChunkCoordinates, startChunk: ChunkCoordinates) :
     Runnable {
+
     abstract val stopAfter: Int
     abstract val world: World
     abstract val count: Int
-    abstract val endReached: Boolean
+    abstract var endReached: Boolean
 
     protected val spiral: Spiral =
         Spiral(Pair(centerChunk.x, centerChunk.z), Pair(startChunk.x, startChunk.z))
@@ -23,11 +27,15 @@ abstract class GenerationTask(plugin: Chunkmaster, centerChunk: ChunkCoordinates
     protected val msptThreshold = plugin.config.getLong("generation.mspt-pause-threshold")
     protected val maxLoadedChunks = plugin.config.getInt("generation.max-loaded-chunks")
     protected val chunksPerStep = plugin.config.getInt("generation.chunks-per-step")
-    protected val ignoreWorldborder = plugin.config.getBoolean("generation.ignore-worldborder")
+    protected val dynmapIntegration = plugin.config.getBoolean("dynmap")
-
+    protected val dynmap = plugin.dynmapApi
     protected var endReachedCallback: ((GenerationTask) -> Unit)? = null
         private set
 
+    private val markerId = "chunkmaster_genarea"
+    private val markerName = "Chunkmaster Generation Area"
+    private val ignoreWorldborder = plugin.config.getBoolean("generation.ignore-worldborder")
+
     abstract override fun run()
     abstract fun cancel()
 
@@ -56,6 +64,77 @@ abstract class GenerationTask(plugin: Chunkmaster, centerChunk: ChunkCoordinates
                 || (stopAfter in 1..count)
     }
 
+    /**
+     * Unloads all chunks that have been loaded
+     */
+    protected fun unloadLoadedChunks() {
+        for (chunk in loadedChunks) {
+            if (chunk.isLoaded) {
+                chunk.unload(true)
+            }
+            if (dynmapIntegration) {
+                dynmap?.triggerRenderOfVolume(chunk.getBlock(0, 0, 0).location, chunk.getBlock(15, 255, 15).location)
+            }
+        }
+
+        loadedChunks.clear()
+    }
+
+    /**
+     * Updates the dynmap marker for the generation radius
+     */
+    protected fun updateDynmapMarker(clear: Boolean = false) {
+        val markerSet = dynmap?.markerAPI?.getMarkerSet("markers")
+        var marker = markerSet?.findAreaMarker(markerId)
+        if (clear) {
+            marker?.deleteMarker()
+        } else if (dynmapIntegration && stopAfter > 0) {
+            val (topLeft, bottomRight) = this.getAreaCorners()
+            if (marker != null) {
+                marker.setCornerLocations(
+                    doubleArrayOf((topLeft.x * 16).toDouble(), (bottomRight.x * 16).toDouble()),
+                    doubleArrayOf((topLeft.z * 16).toDouble(), (bottomRight.z * 16).toDouble())
+                )
+            } else {
+                marker = markerSet?.createAreaMarker(
+                    markerId,
+                    markerName,
+                    false,
+                    world.name,
+                    doubleArrayOf((topLeft.x * 16).toDouble(), (bottomRight.x * 16).toDouble()),
+                    doubleArrayOf((topLeft.z * 16).toDouble(), (bottomRight.z * 16).toDouble()),
+                    true
+                )
+            }
+            marker?.setFillStyle(.0, 0)
+            marker?.setLineStyle(2, 1.0, 0x0000FF)
+        }
+    }
+
+    /**
+     * Returns an approximation of cornders of the generation area
+     */
+    protected fun getAreaCorners(): Pair<ChunkCoordinates, ChunkCoordinates> {
+        val width = sqrt(stopAfter.toFloat())
+        return Pair(
+            ChunkCoordinates(centerChunk.x - floor(width/2).toInt(), centerChunk.z - floor(width/2).toInt()),
+            ChunkCoordinates(centerChunk.x + ceil(width/2).toInt(), centerChunk.z + ceil(width/2).toInt())
+        )
+    }
+
+    /**
+     * Handles the invocation of the end reached callback and additional logic
+     */
+    protected fun setEndReached() {
+        endReached = true
+        endReachedCallback?.invoke(this)
+        updateDynmapMarker(true)
+        if (dynmapIntegration) {
+            val (topLeft, bottomRight) = this.getAreaCorners()
+            dynmap?.triggerRenderOfVolume(topLeft.getCenterLocation(world), bottomRight.getCenterLocation(world))
+        }
+    }
+
     /**
      * Registers end reached callback
      */

src/main/kotlin/net/trivernis/chunkmaster/lib/generation/GenerationTaskPaper.kt

@@ -18,7 +18,10 @@ class GenerationTaskPaper(
     override var count = 0
         private set
     override var endReached: Boolean = false
-        private set
+
+    init {
+        updateDynmapMarker()
+    }
 
     /**
      * Runs the generation task. Every Iteration the next chunk will be generated if
@@ -28,16 +31,10 @@ class GenerationTaskPaper(
     override fun run() {
         if (plugin.mspt < msptThreshold) {    // pause when tps < 2
             if (loadedChunks.size > maxLoadedChunks) {
-                for (chunk in loadedChunks) {
+                unloadLoadedChunks()
-                    if (chunk.isLoaded) {
-                        chunk.unload(true)
-                    }
-                }
-                loadedChunks.clear()
             } else if (pendingChunks.size < maxPendingChunks) {   // if more than 10 chunks are pending, wait.
                 if (borderReached()) {
-                    endReached = true
+                    setEndReached()
-                    endReachedCallback?.invoke(this)
                     return
                 }
 
@@ -73,13 +70,14 @@ class GenerationTaskPaper(
      * This unloads all chunks that were generated but not unloaded yet.
      */
     override fun cancel() {
+        updateDynmapMarker(true)
         unloadAllChunks()
     }
 
     /**
      * Cancels all pending chunks and unloads all loaded chunks.
      */
-    fun unloadAllChunks() {
+    private fun unloadAllChunks() {
         for (pendingChunk in pendingChunks) {
             if (pendingChunk.isDone) {
                 loadedChunks.add(pendingChunk.get())

src/main/kotlin/net/trivernis/chunkmaster/lib/generation/GenerationTaskSpigot.kt

@@ -14,7 +14,10 @@ class GenerationTaskSpigot(
     override var count = 0
         private set
     override var endReached: Boolean = false
-        private set
+
+    init {
+        updateDynmapMarker()
+    }
 
     /**
      * Runs the generation task. Every Iteration the next chunk will be generated if
@@ -24,16 +27,10 @@ class GenerationTaskSpigot(
     override fun run() {
         if (plugin.mspt < msptThreshold) {    // pause when tps < 2
             if (loadedChunks.size > maxLoadedChunks) {
-                for (chunk in loadedChunks) {
+                unloadLoadedChunks()
-                    if (chunk.isLoaded) {
-                        chunk.unload(true)
-                    }
-                }
-                loadedChunks.clear()
             } else {
                 if (borderReached()) {
-                    endReached = true
+                    setEndReached()
-                    endReachedCallback?.invoke(this)
                     return
                 }
 
@@ -70,5 +67,6 @@ class GenerationTaskSpigot(
                 }
             }
         }
+        updateDynmapMarker(true)
     }
 }

src/main/resources/i18n/DEFAULT.i18n.properties

@@ -52,3 +52,5 @@ TOO_FEW_ARGUMENTS = §cYou did not provide enough arguments.
 COORD_INVALID = §cThe provided coordinate ('%s', '%s') is invalid!
 CENTER_UPDATED = §9The center for world §2%s §9has been set to §2(%s, %s)§9.
 CENTER_INFO = §9The center for world §2%s §9is §2(%s, %s)§9.
+
+PLUGIN_DETECTED = Detected %s version %s

src/main/resources/i18n/de.i18n.properties

@@ -52,3 +52,5 @@ TOO_FEW_ARGUMENTS = §cDu hast nicht genug arguments angegeben.
 COORD_INVALID = §cDie Koordinate ('%s', '%s') ist ungültig!
 CENTER_UPDATED = §9Die Mitte der Welt §2%s §9wurde auf §2(%s, %s)§9 gesetzt.
 CENTER_INFO = §9Die Mitte der Welt §2%s §9ist §2(%s, %s)§9.
+
+PLUGIN_DETECTED = Plugin %s in der Version %s gefunden!

src/main/resources/i18n/en.i18n.properties

@@ -52,3 +52,5 @@ TOO_FEW_ARGUMENTS = §cYou did not provide enough arguments.
 COORD_INVALID = §cThe provided coordinate ('%s', '%s') is invalid!
 CENTER_UPDATED = §9The center for world §2%s §9has been set to §2(%s, %s)§9.
 CENTER_INFO = §9The center for world §2%s §9is §2(%s, %s)§9.
+
+PLUGIN_DETECTED = Detected %s version %s

src/main/resources/plugin.yml

@@ -5,6 +5,9 @@ description: Chunk commands plugin.
 author: Trivernis
 website: trivernis.net
 api-version: '1.14'
+database: true
+softdepend:
+  - dynmap
 commands:
   chunkmaster:
     description: Main command