diff --git a/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt b/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt
index a164733aa..b83ed1ded 100644
--- a/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt
+++ b/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt
@@ -49,12 +49,12 @@ abstract class Entity(
     protected open val hasCollisions = true
 
     private val defaultAABB = AABB(
-        Vec3(-(entityType.width / 2 + HITBOX_MARGIN), 0               , -(entityType.width / 2 + HITBOX_MARGIN)),
-        Vec3(+(entityType.width / 2 + HITBOX_MARGIN), entityType.height  , +(entityType.width / 2 + HITBOX_MARGIN))
+        Vec3(-(entityType.width / 2 + HITBOX_MARGIN), 0, -(entityType.width / 2 + HITBOX_MARGIN)),
+        Vec3(+(entityType.width / 2 + HITBOX_MARGIN), entityType.height, +(entityType.width / 2 + HITBOX_MARGIN))
     )
 
-    fun forceMove(relativePosition: Vec3) {
-        position = position + relativePosition
+    fun forceMove(deltaPosition: Vec3) {
+        position = position + deltaPosition
     }
 
     fun addEffect(effect: StatusEffectInstance) {
@@ -202,6 +202,7 @@ abstract class Entity(
         val blockPositions = (originalAABB extend deltaPosition extend Directions.DOWN.directionVector).getBlockPositions()
         val result = VoxelShape()
         for (blockPosition in blockPositions) {
+            // ToDo: Check if chunk is loaded
             val blockState = connection.world.getBlockState(blockPosition) ?: continue
             result.add(blockState.collisionShape + blockPosition)
         }
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/HUDRenderer.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/HUDRenderer.kt
index bbd42a69d..53be6eca3 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/HUDRenderer.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/HUDRenderer.kt
@@ -23,11 +23,13 @@ import de.bixilon.minosoft.gui.rendering.Renderer
 import de.bixilon.minosoft.gui.rendering.hud.atlas.HUDAtlasElement
 import de.bixilon.minosoft.gui.rendering.hud.elements.other.CrosshairHUDElement
 import de.bixilon.minosoft.gui.rendering.hud.nodes.HUDElement
+import de.bixilon.minosoft.gui.rendering.hud.nodes.chat.ChatBoxHUDElement
 import de.bixilon.minosoft.gui.rendering.hud.nodes.debug.HUDSystemDebugNode
 import de.bixilon.minosoft.gui.rendering.hud.nodes.debug.HUDWorldDebugNode
 import de.bixilon.minosoft.gui.rendering.shader.Shader
 import de.bixilon.minosoft.protocol.network.connection.PlayConnection
 import de.bixilon.minosoft.protocol.protocol.ProtocolDefinition
+import de.bixilon.minosoft.util.MMath
 import de.bixilon.minosoft.util.json.ResourceLocationJsonMap.toResourceLocationMap
 import glm_.glm
 import glm_.mat4x4.Mat4
@@ -87,6 +89,11 @@ class HUDRenderer(val connection: PlayConnection, val renderWindow: RenderWindow
             toggleKeyBinding = KeyBindingsNames.TOGGLE_DEBUG_SCREEN,
             enabled = false,
         ))
+        addElement(ElementsNames.CHAT_RESOURCE_LOCATION, ChatBoxHUDElement(this), HUDElementProperties(
+            position = Vec2(0.0f, -1.0f),
+            xBinding = HUDElementProperties.PositionBindings.CENTER,
+        ))
+
     }
 
     fun addElement(resourceLocation: ResourceLocation, hudElement: HUDElement, defaultProperties: HUDElementProperties) {
@@ -174,6 +181,8 @@ class HUDRenderer(val connection: PlayConnection, val renderWindow: RenderWindow
             for ((elementProperties, hudElement) in enabledHUDElement.values) {
                 val realScaleFactor = elementProperties.scale * Minosoft.getConfig().config.game.hud.scale
                 val realSize = hudElement.layout.sizing.currentSize * realScaleFactor
+                realSize.x = MMath.clamp(realSize.x, hudElement.layout.sizing.minSize.x, hudElement.layout.sizing.maxSize.x)
+                realSize.y = MMath.clamp(realSize.y, hudElement.layout.sizing.minSize.y, hudElement.layout.sizing.maxSize.y)
 
                 val elementStart = getRealPosition(realSize, elementProperties, renderWindow.screenDimensions)
 
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/elements/input/SubmittableTextField.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/elements/input/SubmittableTextField.kt
new file mode 100644
index 000000000..76be81558
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/elements/input/SubmittableTextField.kt
@@ -0,0 +1,40 @@
+/*
+ * 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.gui.rendering.hud.elements.input
+
+import de.bixilon.minosoft.config.key.KeyCodes
+import de.bixilon.minosoft.gui.rendering.RenderWindow
+
+class SubmittableTextField(
+    renderWindow: RenderWindow,
+    defaultText: String = "",
+    maxLength: Int = 256,
+    private val onSubmit: (text: String) -> Unit,
+) : TextField(renderWindow, defaultText, maxLength) {
+
+    fun submit() {
+        onSubmit.invoke(text)
+        text = ""
+    }
+
+
+    override fun keyInput(keyCodes: KeyCodes) {
+        if (keyCodes == KeyCodes.KEY_ENTER) {
+            // submit
+            submit()
+            return
+        }
+        super.keyInput(keyCodes)
+    }
+}
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/elements/input/TextField.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/elements/input/TextField.kt
new file mode 100644
index 000000000..9f2ec480e
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/elements/input/TextField.kt
@@ -0,0 +1,104 @@
+/*
+ * 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.gui.rendering.hud.elements.input
+
+import de.bixilon.minosoft.config.key.KeyCodes
+import de.bixilon.minosoft.data.text.ChatComponent
+import de.bixilon.minosoft.gui.rendering.RenderConstants
+import de.bixilon.minosoft.gui.rendering.RenderWindow
+import de.bixilon.minosoft.gui.rendering.hud.nodes.layout.AbsoluteLayout
+import de.bixilon.minosoft.gui.rendering.hud.nodes.primitive.ImageNode
+import de.bixilon.minosoft.gui.rendering.hud.nodes.primitive.LabelNode
+import de.bixilon.minosoft.util.MMath
+import glm_.vec2.Vec2i
+
+
+open class TextField(
+    renderWindow: RenderWindow,
+    defaultText: String = "",
+    var maxLength: Int = 256,
+) : AbsoluteLayout(renderWindow), KeyConsumer, MouseConsumer {
+    override var focused: Boolean = true
+    private var textBuilder: StringBuilder = StringBuilder(defaultText)
+    private val textElement = LabelNode(renderWindow, sizing = sizing, text = ChatComponent.valueOf(raw = text), background = false)
+    private var position = text.length
+
+    var text: String
+        get() = textBuilder.toString()
+        set(value) {
+            position = value.length
+            textBuilder = StringBuilder(value)
+            update()
+        }
+
+    init {
+        addChild(Vec2i(0, 0), textElement)
+        addChild(Vec2i(0, 0), ImageNode(renderWindow, sizing = sizing, renderWindow.WHITE_TEXTURE, 0, RenderConstants.TEXT_BACKGROUND_COLOR))
+        clearChildrenCache()
+    }
+
+    fun clearText() {
+        textBuilder.clear()
+        update()
+    }
+
+    private fun update() {
+        textElement.text = ChatComponent.valueOf(raw = text)
+    }
+
+    override fun keyInput(keyCodes: KeyCodes) {
+        when (keyCodes) {
+            KeyCodes.KEY_BACKSPACE -> {
+                if (textBuilder.isEmpty()) {
+                    return
+                }
+                textBuilder.deleteCharAt(--position)
+            }
+            KeyCodes.KEY_DELETE -> {
+                if (textBuilder.isEmpty() || position == textBuilder.length) {
+                    return
+                }
+                textBuilder.deleteCharAt(position)
+            }
+            KeyCodes.KEY_ENTER -> {
+                if (position > maxLength) {
+                    return
+                }
+                textBuilder.insert(position++, '\n')
+            }
+            KeyCodes.KEY_LEFT -> {
+                position = MMath.clamp(position - 1, 0, text.length)
+                return
+            }
+            KeyCodes.KEY_RIGHT -> {
+                position = MMath.clamp(position + 1, 0, text.length)
+                return
+            }
+            // ToDo: Up and down for line breaks, shift and ctrl modifier, ...
+            else -> {
+                return
+            }
+        }
+        update()
+        super.keyInput(keyCodes)
+    }
+
+    override fun charInput(char: Char) {
+        if (position >= maxLength) {
+            return
+        }
+        textBuilder.insert(position++, char.toString())
+        update()
+    }
+}
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/chat/ChatBoxHUDElement.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/chat/ChatBoxHUDElement.kt
new file mode 100644
index 000000000..b2db30217
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/chat/ChatBoxHUDElement.kt
@@ -0,0 +1,62 @@
+/*
+ * 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.gui.rendering.hud.nodes.chat
+
+
+import de.bixilon.minosoft.config.config.game.controls.KeyBindingsNames
+import de.bixilon.minosoft.gui.rendering.hud.HUDRenderer
+import de.bixilon.minosoft.gui.rendering.hud.elements.input.SubmittableTextField
+import de.bixilon.minosoft.gui.rendering.hud.nodes.HUDElement
+import glm_.vec2.Vec2i
+
+class ChatBoxHUDElement(hudRenderer: HUDRenderer) : HUDElement(hudRenderer) {
+    private lateinit var inputField: SubmittableTextField
+
+    override fun init() {
+        inputField = SubmittableTextField(renderWindow = hudRenderer.renderWindow, maxLength = 256, onSubmit = {
+            hudRenderer.renderWindow.connection.sender.sendChatMessage(it)
+            closeChat()
+        })
+
+        layout.addChild(Vec2i(0, 0), inputField)
+        inputField.apply()
+
+        hudRenderer.renderWindow.registerKeyCallback(KeyBindingsNames.OPEN_CHAT) { _, _ ->
+            openChat()
+        }
+        hudRenderer.renderWindow.registerKeyCallback(KeyBindingsNames.CLOSE_CHAT) { _, _ ->
+            closeChat()
+        }
+    }
+
+    override fun screenChangeResizeCallback(screenDimensions: Vec2i) {
+        layout.sizing.minSize.x = screenDimensions.x
+        layout.sizing.maxSize.x = screenDimensions.x
+        layout.sizing.validate()
+        layout.apply()
+    }
+
+    fun openChat() {
+        hudRenderer.renderWindow.currentKeyConsumer = inputField
+        hudRenderer.renderWindow.currentElement.remove(KeyBindingsNames.WHEN_IN_GAME)
+        hudRenderer.renderWindow.currentElement.add(KeyBindingsNames.WHEN_IN_CHAT)
+    }
+
+    fun closeChat() {
+        inputField.clearText()
+        hudRenderer.renderWindow.currentKeyConsumer = null
+        hudRenderer.renderWindow.currentElement.remove(KeyBindingsNames.WHEN_IN_CHAT)
+        hudRenderer.renderWindow.currentElement.add(KeyBindingsNames.WHEN_IN_GAME)
+    }
+}
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/layout/AbsoluteLayout.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/layout/AbsoluteLayout.kt
index 11631d71a..23fbf43e1 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/layout/AbsoluteLayout.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/layout/AbsoluteLayout.kt
@@ -83,8 +83,7 @@ open class AbsoluteLayout(
 
     private fun recalculateSize() {
         if (children.isEmpty()) {
-            sizing.currentSize.x = sizing.minSize.x
-            sizing.currentSize.y = sizing.minSize.y
+            sizing.currentSize = Vec2i(sizing.minSize)
         } else {
             for ((childNode, start) in children) {
                 checkSize(childNode, start)
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/primitive/LabelNode.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/primitive/LabelNode.kt
index a4172bd73..9ac549416 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/primitive/LabelNode.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/primitive/LabelNode.kt
@@ -37,6 +37,7 @@ class LabelNode(
             prepare()
             apply()
         }
+
     var sText: String
         get() = text.message
         set(value) {
diff --git a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/properties/NodeSizing.kt b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/properties/NodeSizing.kt
index b90306926..7fd3e6103 100644
--- a/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/properties/NodeSizing.kt
+++ b/src/main/java/de/bixilon/minosoft/gui/rendering/hud/nodes/properties/NodeSizing.kt
@@ -13,14 +13,20 @@
 
 package de.bixilon.minosoft.gui.rendering.hud.nodes.properties
 
+import de.bixilon.minosoft.util.MMath
 import glm_.vec2.Vec2i
 
 data class NodeSizing(
-    val minSize: Vec2i = Vec2i(0, 0),
-    val margin: Spacing = Spacing(),
-    val padding: Spacing = Spacing(),
-    val maxSize: Vec2i = Vec2i(Int.MAX_VALUE, Int.MAX_VALUE),
+    var minSize: Vec2i = Vec2i(0, 0),
+    var margin: Spacing = Spacing(0, 0, 0, 0),
+    var padding: Spacing = Spacing(0, 0, 0, 0),
+    var maxSize: Vec2i = Vec2i(Int.MAX_VALUE, Int.MAX_VALUE),
     var forceAlign: NodeAlignment? = null,
 ) {
-    val currentSize: Vec2i = Vec2i(minSize)
+    var currentSize: Vec2i = Vec2i(minSize)
+
+
+    fun validate() {
+        MMath.clamp(currentSize, minSize, maxSize)
+    }
 }
diff --git a/src/main/java/de/bixilon/minosoft/util/MMath.kt b/src/main/java/de/bixilon/minosoft/util/MMath.kt
index 71d8c01aa..b48c01252 100644
--- a/src/main/java/de/bixilon/minosoft/util/MMath.kt
+++ b/src/main/java/de/bixilon/minosoft/util/MMath.kt
@@ -13,6 +13,8 @@
 
 package de.bixilon.minosoft.util
 
+import glm_.vec2.Vec2i
+
 object MMath {
 
     fun minClamp(value: Int, min: Int): Int {
@@ -22,6 +24,12 @@ object MMath {
         return value
     }
 
+    fun clamp(value: Vec2i, min: Vec2i, max: Vec2i): Vec2i {
+        value.x = clamp(value.x, min.x, max.x)
+        value.y = clamp(value.y, min.y, max.y)
+        return value
+    }
+
     fun clamp(value: Int, min: Int, max: Int): Int {
         if (value < min) {
             return min