Initial commit

src/main/kotlin/com/pobnellion/aoe/Aoe.kt

@@ -0,0 +1,23 @@
+package com.pobnellion.aoe
+
+import com.pobnellion.aoe.command.TestCommand
+import com.pobnellion.aoe.ui.PlaceHint
+import com.pobnellion.aoe.ui.PlaceItem
+import org.bukkit.Bukkit
+import org.bukkit.plugin.java.JavaPlugin
+
+class Aoe : JavaPlugin() {
+
+    override fun onEnable() {
+        // Events
+        Bukkit.getPluginManager().registerEvents(PlaceHint(), this)
+        Bukkit.getPluginManager().registerEvents(PlaceItem(), this)
+
+        // Commands
+        this.getCommand("debug")!!.setExecutor(TestCommand())
+    }
+
+    override fun onDisable() {
+        // Plugin shutdown logic
+    }
+}

src/main/kotlin/com/pobnellion/aoe/building/Blacksmith.kt

@@ -0,0 +1,23 @@
+package com.pobnellion.aoe.building
+
+import com.pobnellion.aoe.ui.PlaceHint
+import com.pobnellion.aoe.ui.PlaceHintValidators
+import org.bukkit.Location
+import org.bukkit.Material
+import org.bukkit.entity.Player
+
+class Blacksmith: Building {
+    override fun showPlaceHint(player: Player) {
+        PlaceHint.add(player, 4.0f, 3.0f, 4.0f, ::place, PlaceHintValidators::allReplaceable)
+    }
+
+    fun place(location: Location, sizeX: Float, sizeY: Float, sizeZ: Float) {
+        for (x in 0..<sizeX.toInt())
+            for (y in 0..<sizeY.toInt())
+                for (z in 0..<sizeZ.toInt())
+                    location.world.getBlockAt(
+                        location.blockX + x,
+                        location.blockY + y,
+                        location.blockZ + z ).type = Material.SMOOTH_STONE
+    }
+}

src/main/kotlin/com/pobnellion/aoe/building/Building.kt

@@ -0,0 +1,8 @@
+package com.pobnellion.aoe.building
+
+import org.bukkit.Location
+import org.bukkit.entity.Player
+
+interface Building {
+    fun showPlaceHint(player: Player)
+}

src/main/kotlin/com/pobnellion/aoe/building/House.kt

@@ -0,0 +1,23 @@
+package com.pobnellion.aoe.building
+
+import com.pobnellion.aoe.ui.PlaceHint
+import com.pobnellion.aoe.ui.PlaceHintValidators
+import org.bukkit.Location
+import org.bukkit.Material
+import org.bukkit.entity.Player
+
+class House: Building {
+    override fun showPlaceHint(player: Player) {
+        PlaceHint.add(player, 3.0f, 3.0f, 3.0f, ::place, PlaceHintValidators::allAir)
+    }
+
+    fun place(location: Location, sizeX: Float, sizeY: Float, sizeZ: Float) {
+        for (x in 0..<sizeX.toInt())
+            for (y in 0..<sizeY.toInt())
+                for (z in 0..<sizeZ.toInt())
+                    location.world.getBlockAt(
+                        location.blockX + x,
+                        location.blockY + y,
+                        location.blockZ + z ).type = Material.OAK_LOG
+    }
+}

src/main/kotlin/com/pobnellion/aoe/command/TestCommand.kt

@@ -0,0 +1,20 @@
+package com.pobnellion.aoe.command
+
+import com.pobnellion.aoe.ui.PlaceHint
+import org.bukkit.Material
+import org.bukkit.command.Command
+import org.bukkit.command.CommandExecutor
+import org.bukkit.command.CommandSender
+import org.bukkit.entity.Player
+
+class TestCommand : CommandExecutor {
+    override fun onCommand(sender: CommandSender, command: Command, label: String, args: Array<out String>?): Boolean {
+        if (sender !is Player) {
+            sender.sendMessage("Command can only be executed by players")
+            return true
+        }
+
+        val player: Player = sender
+        return true
+    }
+}

src/main/kotlin/com/pobnellion/aoe/team/Team.kt

@@ -0,0 +1,7 @@
+package com.pobnellion.aoe.team
+
+import com.pobnellion.aoe.building.Building
+
+class Team {
+    public val Buildings: List<Building> = listOf()
+}

src/main/kotlin/com/pobnellion/aoe/ui/PlaceHint.kt

@@ -0,0 +1,302 @@
+package com.pobnellion.aoe.ui;
+
+import com.comphenix.protocol.PacketType
+import com.comphenix.protocol.ProtocolLibrary
+import com.comphenix.protocol.events.PacketContainer
+import com.comphenix.protocol.wrappers.*
+import com.comphenix.protocol.wrappers.WrappedDataWatcher.Registry
+import it.unimi.dsi.fastutil.ints.IntList
+import org.bukkit.Bukkit
+import org.bukkit.Location
+import org.bukkit.Material
+import org.bukkit.entity.EntityType
+import org.bukkit.entity.Player
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.block.Action
+import org.bukkit.event.player.PlayerInteractEvent
+import org.bukkit.event.player.PlayerMoveEvent
+import org.bukkit.potion.PotionEffectType
+import org.joml.Math
+import org.joml.Vector3f
+import java.util.*
+import kotlin.math.floor
+import kotlin.math.min
+
+class PlaceHint : Listener {
+
+    companion object {
+        private const val MAX_TARGET_DISTANCE = 64
+        private val playerHints = HashMap<UUID, HintMarker>();
+
+        fun add(
+            player: Player,
+            sizeX: Float,
+            sizeY: Float,
+            sizeZ: Float,
+            onConfirm: (Location, Float, Float, Float) -> Unit,
+            validate: (Location, Float, Float, Float) -> Boolean,
+            materialValid: Material = Material.LIME_STAINED_GLASS,
+            materialInvalid: Material = Material.RED_STAINED_GLASS,
+        ) {
+            remove(player)
+            createOutlineTeam(player)
+            playerHints[player.uniqueId] = HintMarker(player, sizeX, sizeY, sizeZ, onConfirm, validate, materialValid, materialInvalid)
+            val block = player.getTargetBlockExact(MAX_TARGET_DISTANCE);
+            playerHints[player.uniqueId]!!.moveTo(block?.location)
+        }
+
+        fun remove(player: Player) {
+            if (!playerHints.containsKey(player.uniqueId))
+                return
+
+            playerHints[player.uniqueId]!!.moveTo(null)
+            playerHints.remove(player.uniqueId)
+        }
+
+        fun clear() {
+            playerHints.values.forEach(fun (hint) {hint.moveTo(null)})
+            playerHints.clear()
+        }
+
+        private fun createOutlineTeam(player: Player) {
+            val packet = PacketContainer(PacketType.Play.Server.SCOREBOARD_TEAM)
+            packet.strings.write(0, "placeValid")
+            packet.integers.write(0, 0)
+            packet.optionalTeamParameters.write(0, Optional.of(Utils.teamParams))
+
+            ProtocolLibrary.getProtocolManager().sendServerPacket(player, packet)
+        }
+    }
+
+    @EventHandler
+    fun onPlayerLook(event: PlayerMoveEvent) {
+        if (!playerHints.containsKey(event.player.uniqueId))
+            return
+
+        val block = event.player.getTargetBlockExact(MAX_TARGET_DISTANCE);
+        playerHints[event.player.uniqueId]!!.moveTo(block?.location)
+    }
+
+    @EventHandler
+    fun onLeftClick(event: PlayerInteractEvent) {
+        if (!playerHints.containsKey(event.player.uniqueId) || (event.action != Action.LEFT_CLICK_BLOCK && event.action != Action.LEFT_CLICK_AIR))
+            return
+
+        if (!playerHints[event.player.uniqueId]!!.isValid)
+            return
+
+        val marker = playerHints[event.player.uniqueId]!!
+        marker.onConfirm(marker.currentLocation!!, marker.sizeX, marker.sizeY, marker.sizeZ)
+        remove(event.player)
+    }
+}
+
+private class HintMarker(
+    val player: Player,
+    val sizeX: Float,
+    val sizeY: Float,
+    val sizeZ: Float,
+    val onConfirm: (Location, Float, Float, Float) -> Unit,
+    val validate: (Location, Float, Float, Float) -> Boolean,
+    val materialValid: Material,
+    val materialInvalid: Material,
+) {
+    private val markerUuid = UUID.randomUUID()
+    private val outlineUuid = UUID.randomUUID()
+    private val markerId = (Math.random() * Int.MAX_VALUE).toInt()
+    private val outlineId = markerId + 1
+    var currentLocation: Location? = null
+    var isValid = false
+
+    private fun show(initialLocation: Location) {
+        initialLocation.add(-floor(sizeX / 2.0), 1.0, -floor(sizeZ / 2.0))
+
+        spawnBlockDisplay(markerId, markerUuid, initialLocation, Material.GRAY_STAINED_GLASS, Vector3f(sizeX, 0.2f, sizeZ), 0b01000000)
+//        spawnBlockDisplay(outlineId, outlineUuid, initialLocation, Material.STONE, Vector3f(sizeX, sizeY, sizeZ), 0b00100000)
+
+        val spawnSlimePacket = PacketContainer(PacketType.Play.Server.SPAWN_ENTITY)
+        spawnSlimePacket.integers.write(0, outlineId)
+        spawnSlimePacket.uuiDs.write(0, outlineUuid)
+        spawnSlimePacket.entityTypeModifier.write(0, EntityType.SLIME)
+
+        spawnSlimePacket.doubles
+            .write(0, initialLocation.x)
+            .write(1, initialLocation.y)
+            .write(2, initialLocation.z)
+
+        val dataPacket = PacketContainer(PacketType.Play.Server.ENTITY_METADATA)
+        dataPacket.integers.write(0, outlineId)
+
+        // TODO: 1 - display riding slime for nicer movement
+        // TODO: 2 - slime riding display for nicer movement
+        // TODO: 3 - resource pack for outline with really low opacity
+
+        val watcher = WrappedDataWatcher()
+        watcher.setObject(0, Registry.get(Byte::class.javaObjectType), 0b01100000.toByte())
+//        watcher.setObject(5, Registry.get(Boolean::class.javaObjectType), true)
+        watcher.setObject(16, Registry.get(Int::class.javaObjectType), min(sizeX, min(sizeY, sizeZ)).toInt())
+
+        dataPacket.dataValueCollectionModifier.write(0, watcher.watchableObjects
+            .map { WrappedDataValue(it.watcherObject.index, it.watcherObject.serializer, it.rawValue) })
+
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, spawnSlimePacket)
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, dataPacket)
+
+        val outlineTeamPacket = PacketContainer(PacketType.Play.Server.SCOREBOARD_TEAM)
+        outlineTeamPacket.strings.write(0, "placeValid")
+        outlineTeamPacket.integers.write(0, 3)
+        outlineTeamPacket.getSpecificModifier(Collection::class.java).write(0, listOf(outlineUuid.toString()))
+
+//        val outlineInvisiblePacket = PacketContainer(PacketType.Play.Server.ENTITY_EFFECT)
+//        outlineInvisiblePacket.integers
+//            .write(0, outlineId)
+//            .write(1, 1)
+//            .write(2, -1)
+//
+//        outlineInvisiblePacket.effectTypes.write(0, PotionEffectType.INVISIBILITY)
+//        outlineInvisiblePacket.bytes.write(0, 0b0000.toByte())
+
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, outlineTeamPacket)
+//        ProtocolLibrary.getProtocolManager().sendServerPacket(player, outlineInvisiblePacket)
+
+        isValid = validate(initialLocation, sizeX, sizeY, sizeZ)
+        updateColour()
+
+        currentLocation = initialLocation;
+    }
+
+    private fun hide() {
+        val packet = PacketContainer(PacketType.Play.Server.ENTITY_DESTROY)
+        packet.intLists.write(0, IntList.of(markerId, outlineId))
+
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, packet)
+
+        currentLocation = null
+    }
+
+    fun moveTo(newLocation: Location?) {
+        if (newLocation == null) {
+            if (currentLocation != null)
+                hide()
+            return
+        }
+
+        if (currentLocation == null) {
+            show(newLocation)
+            return
+        }
+
+        newLocation.add(-floor(sizeX / 2.0), 1.0, -floor(sizeZ / 2.0))
+
+        val markerPacket = PacketContainer(PacketType.Play.Server.ENTITY_TELEPORT)
+        markerPacket.integers.write(0, markerId)
+
+        markerPacket.doubles
+            .write(0, newLocation.x)
+            .write(1, newLocation.y)
+            .write(2, newLocation.z)
+
+        markerPacket.booleans.write(0, true)
+
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, markerPacket)
+
+        val outlinePacket = PacketContainer(PacketType.Play.Server.ENTITY_TELEPORT)
+        outlinePacket.integers.write(0, outlineId)
+
+        outlinePacket.doubles
+            .write(0, newLocation.x)
+            .write(1, newLocation.y)
+            .write(2, newLocation.z)
+
+        outlinePacket.booleans.write(0, true)
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, outlinePacket)
+
+        currentLocation = newLocation
+
+        // Update material
+        val valid = validate(newLocation, sizeX, sizeY, sizeZ)
+
+        if (valid != isValid) {
+            isValid = valid
+            updateColour()
+        }
+    }
+
+    // region helper functions
+
+    private fun spawnBlockDisplay(id: Int, uuid: UUID, location: Location, material: Material, scale: Vector3f, options: Byte) {
+        val spawnPacket = PacketContainer(PacketType.Play.Server.SPAWN_ENTITY)
+        spawnPacket.integers.write(0, id)
+        spawnPacket.uuiDs.write(0, uuid)
+        spawnPacket.entityTypeModifier.write(0, EntityType.BLOCK_DISPLAY)
+        spawnPacket.doubles
+            .write(0, location.x)
+            .write(1, location.y)
+            .write(2, location.z)
+
+        val dataPacket = PacketContainer(PacketType.Play.Server.ENTITY_METADATA)
+        dataPacket.integers.write(0, id)
+
+        // woated
+        val blockData = BukkitConverters
+            .getWrappedBlockDataConverter()
+            .getGeneric(WrappedBlockData.createData(material))
+
+        val watcher = WrappedDataWatcher()
+        watcher.setObject(0, Registry.get(Byte::class.javaObjectType), options)
+        watcher.setObject(12, Registry.get(Vector3f::class.javaObjectType), scale)
+        watcher.setObject(23, Registry.getBlockDataSerializer(false), blockData)
+
+        dataPacket.dataValueCollectionModifier.write(0, watcher.watchableObjects
+            .map { WrappedDataValue(it.watcherObject.index, it.watcherObject.serializer, it.rawValue) })
+
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, spawnPacket)
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, dataPacket)
+    }
+
+    private fun updateColour() {
+        // marker
+        val dataPacket = PacketContainer(PacketType.Play.Server.ENTITY_METADATA)
+        dataPacket.integers.write(0,markerId);
+
+        val material = if (isValid) materialValid else materialInvalid
+        val blockData = BukkitConverters
+            .getWrappedBlockDataConverter()
+            .getGeneric(WrappedBlockData.createData(material))
+
+        val metadata = listOf(
+            WrappedDataValue(23, WrappedDataWatcher.Registry.getBlockDataSerializer(false), blockData)
+        )
+
+        dataPacket.dataValueCollectionModifier.write(0, metadata)
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, dataPacket)
+
+        // outline
+        val outlineTeamPacket = PacketContainer(PacketType.Play.Server.SCOREBOARD_TEAM)
+        outlineTeamPacket.strings.write(0, "placeValid")
+        outlineTeamPacket.integers.write(0, 2)
+        val params = WrappedTeamParameters.newBuilder(Utils.teamParams)
+            .color(if (isValid) EnumWrappers.ChatFormatting.GREEN else EnumWrappers.ChatFormatting.RED)
+            .build()
+
+        outlineTeamPacket.optionalTeamParameters.write(0, Optional.of(params))
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, outlineTeamPacket)
+    }
+
+    // endregion
+}
+
+private class Utils {
+    companion object {
+        val teamParams: WrappedTeamParameters = WrappedTeamParameters.newBuilder()
+            .displayName(WrappedChatComponent.fromText(""))
+            .collisionRule("never")
+            .nametagVisibility("never")
+            .options(0)
+            .color(EnumWrappers.ChatFormatting.RED)
+            .prefix(WrappedChatComponent.fromText(""))
+            .suffix(WrappedChatComponent.fromText(""))
+            .build()
+    }
+}

src/main/kotlin/com/pobnellion/aoe/ui/PlaceHintValidators.kt

@@ -0,0 +1,38 @@
+package com.pobnellion.aoe.ui
+
+import org.bukkit.Location
+
+class PlaceHintValidators {
+    companion object {
+
+        fun alwaysTrue(location: Location, sizeX: Float, sizeY: Float, sizeZ: Float): Boolean {
+            return true
+        }
+
+        fun allAir(location: Location, sizeX: Float, sizeY: Float, sizeZ: Float): Boolean {
+            for (x in 0..<sizeX.toInt())
+                for (y in 0..<sizeY.toInt())
+                    for (z in 0..<sizeZ.toInt())
+                        if (!location.world.getBlockAt(
+                            location.blockX + x,
+                            location.blockY + y,
+                            location.blockZ + z ).isEmpty)
+                            return false
+
+            return true
+        }
+
+        fun allReplaceable(location: Location, sizeX: Float, sizeY: Float, sizeZ: Float): Boolean {
+            for (x in 0..<sizeX.toInt())
+                for (y in 0..<sizeY.toInt())
+                    for (z in 0..<sizeZ.toInt())
+                        if (!location.world.getBlockAt(
+                                location.blockX + x,
+                                location.blockY + y,
+                                location.blockZ + z ).isReplaceable)
+                            return false
+
+            return true
+        }
+    }
+}

src/main/kotlin/com/pobnellion/aoe/ui/PlaceItem.kt

@@ -0,0 +1,67 @@
+package com.pobnellion.aoe.ui
+
+import com.pobnellion.aoe.building.Blacksmith
+import com.pobnellion.aoe.building.House
+import net.kyori.adventure.text.Component
+import org.bukkit.Bukkit
+import org.bukkit.Material
+import org.bukkit.entity.Player
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.block.Action
+import org.bukkit.event.inventory.InventoryClickEvent
+import org.bukkit.event.inventory.InventoryCloseEvent
+import org.bukkit.event.inventory.InventoryDragEvent
+import org.bukkit.event.player.PlayerInteractEvent
+import org.bukkit.inventory.ItemStack
+
+
+class PlaceItem : Listener {
+    private val buildingInventory = Bukkit.createInventory(null, 9, Component.text("Buildings"))
+
+    init {
+        buildingInventory.addItem(createGuiItem(Material.OAK_LOG, "House", "Just a house bro"))
+        buildingInventory.addItem(createGuiItem(Material.ANVIL, "Blacksmith", "smith ."))
+    }
+
+    @EventHandler
+    fun onRightClickItem(event: PlayerInteractEvent) {
+        if (event.material != Material.BRICKS || (event.action != Action.RIGHT_CLICK_AIR && event.action != Action.RIGHT_CLICK_BLOCK))
+            return
+
+        event.isCancelled = true
+        event.player.openInventory(buildingInventory)
+    }
+
+    @EventHandler
+    fun onInventoryClick(event: InventoryClickEvent) {
+        if (event.inventory != buildingInventory)
+            return
+
+        event.isCancelled = true
+        var validClick = true
+
+        when (event.currentItem?.type) {
+            Material.OAK_LOG -> House().showPlaceHint(event.whoClicked as Player)
+            Material.ANVIL -> Blacksmith().showPlaceHint(event.whoClicked as Player)
+            else -> validClick = false
+        }
+
+        if (validClick)
+            event.whoClicked.closeInventory(InventoryCloseEvent.Reason.PLUGIN)
+    }
+
+    @EventHandler
+    fun onInventoryClick(event: InventoryDragEvent) {
+        if (event.inventory == buildingInventory)
+            event.isCancelled = true
+    }
+
+    private fun createGuiItem(material: Material, name: String, lore: String): ItemStack {
+        val item = ItemStack(material, 1)
+        item.itemMeta.displayName(Component.text(name))
+        item.itemMeta.lore(mutableListOf(Component.text(lore)))
+        return item
+    }
+
+}