item cooldown, wip item interaction, outsource block placing

src/main/java/de/bixilon/minosoft/data/abilities/ItemCooldown.kt

@@ -0,0 +1,26 @@
+/*
+ * Minosoft
+ * Copyright (C) 2021 Moritz Zwerger
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This software is not affiliated with Mojang AB, the original developer of Minecraft.
+ */
+
+package de.bixilon.minosoft.data.abilities
+
+import de.bixilon.minosoft.protocol.protocol.ProtocolDefinition
+
+data class ItemCooldown(
+    val start: Long,
+    val time: Int,
+) {
+    val end: Long = start + (time * ProtocolDefinition.TICK_TIME)
+
+    val ended: Boolean
+        get() = System.currentTimeMillis() >= end
+}

src/main/java/de/bixilon/minosoft/data/mappings/blocks/BlockUsages.kt

@@ -20,7 +20,7 @@ enum class BlockUsages {
     CONSUME,
 
     /**
-     * Usage get consumed (like pressing a button, opening a door, right clicking on block entities) with animation
+     * Usage get consumed (like pressing a button, opening a door, right clicking on block entities, placing a block, …) with animation
      */
     SUCCESS,
 
@@ -28,10 +28,5 @@ enum class BlockUsages {
      * Nothing happens from block side (e.g. right clicking on dirt). You can maybe place a block, whatever
      */
     PASS,
-
-    /**
-     * Nothing happens, basically `CONSUME`, but a requirement was not satisfied.
-     */
-    FAIL,
     ;
 }

src/main/java/de/bixilon/minosoft/data/mappings/items/BlockItem.kt

@@ -14,9 +14,19 @@
 package de.bixilon.minosoft.data.mappings.items
 
 import com.google.gson.JsonObject
+import de.bixilon.minosoft.data.abilities.Gamemodes
+import de.bixilon.minosoft.data.inventory.ItemStack
 import de.bixilon.minosoft.data.mappings.ResourceLocation
+import de.bixilon.minosoft.data.mappings.blocks.BlockState
+import de.bixilon.minosoft.data.mappings.blocks.BlockUsages
 import de.bixilon.minosoft.data.mappings.blocks.types.Block
 import de.bixilon.minosoft.data.mappings.versions.Registries
+import de.bixilon.minosoft.data.player.Hands
+import de.bixilon.minosoft.gui.rendering.input.camera.RaycastHit
+import de.bixilon.minosoft.gui.rendering.util.VecUtil.plus
+import de.bixilon.minosoft.protocol.network.connection.PlayConnection
+import de.bixilon.minosoft.protocol.packets.c2s.play.BlockPlaceC2SP
+import glm_.vec3.Vec3i
 
 open class BlockItem(
     resourceLocation: ResourceLocation,
@@ -24,4 +34,44 @@ open class BlockItem(
     data: JsonObject,
 ) : Item(resourceLocation, registries, data) {
     val block: Block = registries.blockRegistry[data["block"].asInt]
+
+    override fun use(connection: PlayConnection, blockState: BlockState, blockPosition: Vec3i, raycastHit: RaycastHit, hands: Hands, itemStack: ItemStack): BlockUsages {
+        if (!connection.player.entity.gamemode.canBuild) {
+            return BlockUsages.PASS
+        }
+
+        val placePosition = raycastHit.blockPosition + raycastHit.hitDirection
+        val dimension = connection.world.dimension!!
+        if (placePosition.y < dimension.minY || placePosition.y >= dimension.height) {
+            return BlockUsages.PASS
+        }
+
+        connection.world[placePosition]?.let {
+            if (!it.material.replaceable) {
+                return BlockUsages.PASS
+            }
+        }
+
+
+        val placeBlockState = block.getPlacementState(connection, raycastHit) ?: return BlockUsages.PASS
+
+
+        connection.world[placePosition] = placeBlockState
+
+        if (connection.player.entity.gamemode != Gamemodes.CREATIVE) {
+            itemStack.count--
+            connection.player.inventory.validate()
+        }
+
+
+        connection.sendPacket(BlockPlaceC2SP(
+            position = placePosition,
+            direction = raycastHit.hitDirection,
+            cursorPosition = raycastHit.hitPosition,
+            item = connection.player.inventory.getHotbarSlot(),
+            hand = Hands.MAIN_HAND,
+            insideBlock = false,  // ToDo
+        ))
+        return BlockUsages.SUCCESS
+    }
 }

src/main/java/de/bixilon/minosoft/data/mappings/items/Item.kt

@@ -50,7 +50,7 @@ open class Item(
         return resourceLocation.toString()
     }
 
-    open fun use(connection: PlayConnection, blockState: BlockState, blockPosition: Vec3i, raycastHit: RaycastHit, hands: Hands, itemStack: ItemStack?): BlockUsages {
+    open fun use(connection: PlayConnection, blockState: BlockState, blockPosition: Vec3i, raycastHit: RaycastHit, hands: Hands, itemStack: ItemStack): BlockUsages {
         return BlockUsages.PASS
     }
 

src/main/java/de/bixilon/minosoft/data/player/Player.kt

@@ -12,9 +12,11 @@
  */
 package de.bixilon.minosoft.data.player
 
+import de.bixilon.minosoft.data.abilities.ItemCooldown
 import de.bixilon.minosoft.data.accounts.Account
 import de.bixilon.minosoft.data.entities.EntityRotation
 import de.bixilon.minosoft.data.entities.entities.player.PlayerEntity
+import de.bixilon.minosoft.data.mappings.items.Item
 import de.bixilon.minosoft.data.mappings.other.containers.Container
 import de.bixilon.minosoft.data.mappings.other.containers.PlayerInventory
 import de.bixilon.minosoft.gui.rendering.util.VecUtil
@@ -41,4 +43,6 @@ class Player(
     val containers: MutableMap<Int, Container> = synchronizedMapOf(
         ProtocolDefinition.PLAYER_INVENTORY_ID to inventory)
     var selectedHotbarSlot: Int = 0
+
+    val itemCooldown: MutableMap<Item, ItemCooldown> = synchronizedMapOf()
 }

src/main/java/de/bixilon/minosoft/gui/rendering/input/InteractionHandler.kt

@@ -15,16 +15,14 @@ package de.bixilon.minosoft.gui.rendering.input
 
 import de.bixilon.minosoft.config.config.game.controls.KeyBindingsNames
 import de.bixilon.minosoft.data.Directions
-import de.bixilon.minosoft.data.abilities.Gamemodes
 import de.bixilon.minosoft.data.mappings.blocks.BlockUsages
-import de.bixilon.minosoft.data.mappings.items.BlockItem
 import de.bixilon.minosoft.data.player.Hands
 import de.bixilon.minosoft.gui.rendering.RenderConstants
 import de.bixilon.minosoft.gui.rendering.RenderWindow
-import de.bixilon.minosoft.gui.rendering.util.VecUtil.plus
 import de.bixilon.minosoft.protocol.packets.c2s.play.ArmSwingC2SP
 import de.bixilon.minosoft.protocol.packets.c2s.play.BlockBreakC2SP
 import de.bixilon.minosoft.protocol.packets.c2s.play.BlockPlaceC2SP
+import de.bixilon.minosoft.protocol.packets.c2s.play.ItemUseC2SP
 import de.bixilon.minosoft.protocol.protocol.ProtocolDefinition
 import glm_.vec3.Vec3i
 
@@ -104,8 +102,13 @@ class InteractionHandler(
         if (raycastHit.distance > RenderConstants.MAX_BLOCK_OUTLINE_RAYCAST_DISTANCE) {
             return
         }
+        val itemInHand = connection.player.inventory.getHotbarSlot()
 
-        val usage = raycastHit.blockState.block.use(renderWindow.connection, raycastHit.blockState, raycastHit.blockPosition, raycastHit, Hands.MAIN_HAND, null) // ToDo
+        val usage = if (renderWindow.inputHandler.camera.sneaking) {
+            BlockUsages.PASS
+        } else {
+            raycastHit.blockState.block.use(renderWindow.connection, raycastHit.blockState, raycastHit.blockPosition, raycastHit, Hands.MAIN_HAND, itemInHand)
+        }
 
         lastInteractionSent = currentTime
         lastInteraction = currentTime
@@ -128,47 +131,32 @@ class InteractionHandler(
             }
             BlockUsages.PASS -> {
                 // use item or place block
-                if (!connection.player.entity.gamemode.canBuild) {
-                    return
-                }
-                val selectedItemStack = connection.player.inventory.getHotbarSlot() ?: return
-                val blockPosition = raycastHit.blockPosition + raycastHit.hitDirection
+                itemInHand ?: return
 
-                val dimension = connection.world.dimension!!
-                if (blockPosition.y < dimension.minY || blockPosition.y >= dimension.height) {
-                    return
-                }
+                val cooldown = connection.player.itemCooldown[itemInHand.item]
 
-                renderWindow.connection.world[blockPosition]?.let {
-                    if (!it.material.replaceable) {
+                cooldown?.let {
+                    if (it.ended) {
+                        connection.player.itemCooldown.remove(itemInHand.item)
+                    } else {
                         return
                     }
                 }
 
 
-                val blockState = if (selectedItemStack.item is BlockItem) {
-                    selectedItemStack.item.block.getPlacementState(renderWindow.connection, raycastHit) ?: return
-                } else {
-                    return
+
+                when (itemInHand.item.use(connection, raycastHit.blockState, raycastHit.blockPosition, raycastHit, Hands.MAIN_HAND, itemInHand)) {
+                    BlockUsages.SUCCESS -> {
+                        connection.sendPacket(ArmSwingC2SP(Hands.MAIN_HAND))
+                    }
+                    BlockUsages.PASS -> {
+                        return
+                    }
+                    BlockUsages.CONSUME -> {
+                    }
                 }
-
-                renderWindow.connection.world[blockPosition] = blockState
-
-                if (connection.player.entity.gamemode != Gamemodes.CREATIVE) {
-                    selectedItemStack.count--
-                    renderWindow.connection.player.inventory.validate()
-                }
-
-                connection.sendPacket(ArmSwingC2SP(Hands.MAIN_HAND))
-
-                connection.sendPacket(BlockPlaceC2SP(
-                    position = blockPosition,
-                    direction = raycastHit.hitDirection,
-                    cursorPosition = raycastHit.hitPosition,
-                    item = connection.player.inventory.getHotbarSlot(),
-                    hand = Hands.MAIN_HAND,
-                    insideBlock = false,  // ToDo
-                ))
+                // ToDo: Before 1.9
+                connection.sendPacket(ItemUseC2SP(Hands.MAIN_HAND))
             }
         }
 

src/main/java/de/bixilon/minosoft/gui/rendering/input/camera/Camera.kt

@@ -94,6 +94,8 @@ class Camera(
     var viewProjectionMatrix = projectionMatrix * viewMatrix
         private set
 
+    var sneaking: Boolean = false // ToDo: Not yet implemented
+
 
     fun mouseCallback(xPos: Double, yPos: Double) {
         var xOffset = xPos - this.lastMouseX
@@ -328,7 +330,7 @@ class Camera(
             if (distance >= 0.0f && blockState != null) {
                 currentPosition += direction * distance
                 return RaycastHit(
-                    currentPosition ,
+                    currentPosition,
                     getTotalDistance() + distance,
                     blockState = blockState,
                     hitDirection = currentPosition.nearestIntegerPositionDirection,

src/main/java/de/bixilon/minosoft/protocol/packets/s2c/play/ItemCooldownSetS2CP.kt

@@ -12,6 +12,8 @@
  */
 package de.bixilon.minosoft.protocol.packets.s2c.play
 
+import de.bixilon.minosoft.data.abilities.ItemCooldown
+import de.bixilon.minosoft.protocol.network.connection.PlayConnection
 import de.bixilon.minosoft.protocol.packets.s2c.PlayS2CPacket
 import de.bixilon.minosoft.protocol.protocol.PlayInByteBuffer
 import de.bixilon.minosoft.util.logging.Log
@@ -22,6 +24,10 @@ class ItemCooldownSetS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
     val item = buffer.connection.registries.itemRegistry[buffer.readVarInt()]
     val time = buffer.readVarInt()
 
+    override fun handle(connection: PlayConnection) {
+        connection.player.itemCooldown[item] = ItemCooldown(System.currentTimeMillis(), time)
+    }
+
     override fun log() {
         Log.log(LogMessageType.NETWORK_PACKETS_IN, level = LogLevels.VERBOSE) { "Item cooldown set (item=$item, time=$time)" }
     }