diff --git a/Minecraft.Assets/Common/res/1_2_2/gui/beacon.png b/Minecraft.Assets/Common/res/1_2_2/gui/beacon.png
new file mode 100644
index 000000000..f51a2ef51
Binary files /dev/null and b/Minecraft.Assets/Common/res/1_2_2/gui/beacon.png differ
diff --git a/Minecraft.Assets/Common/res/lang/en_US.lang b/Minecraft.Assets/Common/res/lang/en_US.lang
index 0b005e48c..890a2f576 100644
--- a/Minecraft.Assets/Common/res/lang/en_US.lang
+++ b/Minecraft.Assets/Common/res/lang/en_US.lang
@@ -436,6 +436,9 @@ tile.oreEmerald.name=Emerald Ore
 tile.blockEmerald.name=Block of Emerald
 tile.tripWire.name=Tripwire
 tile.tripWireSource.name=Tripwire Hook
+tile.beacon.name=Beacon
+tile.beacon.primary=Primary Power
+tile.beacon.secondary=Secondary Power
 
 item.shovelIron.name=Iron Shovel
 item.pickaxeIron.name=Iron Pickaxe
diff --git a/Minecraft.Client/Player/LocalPlayer.cpp b/Minecraft.Client/Player/LocalPlayer.cpp
index 79003a286..442bb1f97 100644
--- a/Minecraft.Client/Player/LocalPlayer.cpp
+++ b/Minecraft.Client/Player/LocalPlayer.cpp
@@ -1,5 +1,6 @@
 #include "../Platform/stdafx.h"
 #include "LocalPlayer.h"
+#include "UI/Screens/BeaconScreen.h"
 #include "UI/Screens/BrewingStandScreen.h"
 #include "UI/Screens/EnchantmentScreen.h"
 #include "UI/Screens/HopperScreen.h"
@@ -696,9 +697,13 @@ bool LocalPlayer::openBrewingStand(
 }
 
 bool LocalPlayer::openBeacon(std::shared_ptr<BeaconTileEntity> beacon) {
-    // minecraft->setScreen(new BeaconScreen(inventory, beacon));
+#ifdef ENABLE_JAVA_GUIS
+    minecraft->setScreen(new BeaconScreen(inventory, beacon));
+    bool success = true;
+#else
     bool success = app.LoadBeaconMenu(GetXboxPad(), inventory, beacon);
     if (success) ui.PlayUISFX(eSFX_Press);
+#endif
     return success;
 }
 
diff --git a/Minecraft.Client/Textures/Textures.cpp b/Minecraft.Client/Textures/Textures.cpp
index bbd96f14a..907f51927 100644
--- a/Minecraft.Client/Textures/Textures.cpp
+++ b/Minecraft.Client/Textures/Textures.cpp
@@ -180,6 +180,7 @@ const wchar_t* Textures::preLoaded[TN_COUNT] = {
     L"gui/horse",
     L"gui/anvil",
     L"gui/trap",
+    L"gui/beacon",
     L"gui/hopper",
     L"gui/enchant",
     L"gui/villager",
diff --git a/Minecraft.Client/Textures/Textures.h b/Minecraft.Client/Textures/Textures.h
index 3edec4b5d..fd59fc66b 100644
--- a/Minecraft.Client/Textures/Textures.h
+++ b/Minecraft.Client/Textures/Textures.h
@@ -162,6 +162,7 @@ typedef enum _TEXTURE_NAME {
     TN_GUI_HORSE,
     TN_GUI_ANVIL,
     TN_GUI_TRAP,
+    TN_GUI_BEACON,
     TN_GUI_HOPPER,
     TN_GUI_ENCHANT,
     TN_GUI_VILLAGER,
diff --git a/Minecraft.Client/UI/AbstractBeaconButton.cpp b/Minecraft.Client/UI/AbstractBeaconButton.cpp
new file mode 100644
index 000000000..b2d874ddc
--- /dev/null
+++ b/Minecraft.Client/UI/AbstractBeaconButton.cpp
@@ -0,0 +1,46 @@
+#include "../../Platform/stdafx.h"
+#include "AbstractBeaconButton.h"
+#include "../Textures/Textures.h"
+#include "../../../Minecraft.Client/Minecraft.h"
+#include <GL/gl.h>
+
+// 4jcraft: referenced from MCP 8.11 (JE 1.6.4)
+#ifdef ENABLE_JAVA_GUIS
+extern ResourceLocation GUI_BEACON_LOCATION;
+#endif
+
+AbstractBeaconButton::AbstractBeaconButton(int id, int x, int y)
+    : Button(id, x, y, 22, 22, L"") {
+    hovered = false;
+    selected = false;
+    iconRes = nullptr;
+    iconU = iconV = 0;
+}
+
+void AbstractBeaconButton::renderBg(Minecraft* minecraft, int xm, int ym) {
+#ifdef ENABLE_JAVA_GUIS
+    if (!visible) return;
+
+    hovered = (xm >= x && ym >= y && xm < x + w && ym < y + h);
+
+    glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+    minecraft->textures->bindTexture(&GUI_BEACON_LOCATION);
+
+    int texU = 0;
+    if (!active) {
+        texU += w * 2;      
+    } else if (selected) {
+        texU += w * 1;      
+    } else if (hovered) {
+        texU += w * 3;      
+    }
+    int texV = 219;         
+
+    blit(x, y, texU, texV, w, h);
+
+    if (iconRes != nullptr && iconRes != &GUI_BEACON_LOCATION) {
+        minecraft->textures->bindTexture(iconRes);
+    }
+    blit(x + 2, y + 2, iconU, iconV, 18, 18);
+#endif
+}
\ No newline at end of file
diff --git a/Minecraft.Client/UI/AbstractBeaconButton.h b/Minecraft.Client/UI/AbstractBeaconButton.h
new file mode 100644
index 000000000..3254f4912
--- /dev/null
+++ b/Minecraft.Client/UI/AbstractBeaconButton.h
@@ -0,0 +1,24 @@
+#pragma once
+#include "Button.h"
+
+class ResourceLocation;
+
+class AbstractBeaconButton : public Button {
+protected:
+    bool hovered;
+    bool selected;
+    ResourceLocation* iconRes;
+    int iconU, iconV;
+
+public:
+    AbstractBeaconButton(int id, int x, int y);
+
+    void setSelected(bool sel) { selected = sel; }
+    bool isSelected() const { return selected; }
+    bool isHovered() const { return hovered; }
+
+    virtual void renderTooltip(int xm, int ym) = 0;
+
+protected:
+    virtual void renderBg(Minecraft* minecraft, int xm, int ym) override;
+};
\ No newline at end of file
diff --git a/Minecraft.Client/UI/BeaconCancelButton.cpp b/Minecraft.Client/UI/BeaconCancelButton.cpp
new file mode 100644
index 000000000..081029e4c
--- /dev/null
+++ b/Minecraft.Client/UI/BeaconCancelButton.cpp
@@ -0,0 +1,25 @@
+#include "../../Platform/stdafx.h"
+#include "BeaconCancelButton.h"
+#include "Screens/BeaconScreen.h"
+#include "../../../Minecraft.World/Headers/net.minecraft.locale.h"
+
+// 4jcraft: referenced from MCP 8.11 (JE 1.6.4)
+#ifdef ENABLE_JAVA_GUIS
+extern ResourceLocation GUI_BEACON_LOCATION;
+#endif
+
+BeaconCancelButton::BeaconCancelButton(BeaconScreen* screen, int id, int x,
+                                       int y)
+    : AbstractBeaconButton(id, x, y) {
+    this->screen = screen;
+#ifdef ENABLE_JAVA_GUIS
+    this->iconRes = &GUI_BEACON_LOCATION;
+#endif
+    this->iconU = 112;
+    this->iconV = 220;
+}
+
+void BeaconCancelButton::renderTooltip(int xm, int ym) {
+    screen->renderTooltip(Language::getInstance()->getElement(L"gui.cancel"),
+                          xm, ym);
+}
\ No newline at end of file
diff --git a/Minecraft.Client/UI/BeaconCancelButton.h b/Minecraft.Client/UI/BeaconCancelButton.h
new file mode 100644
index 000000000..f9d62456e
--- /dev/null
+++ b/Minecraft.Client/UI/BeaconCancelButton.h
@@ -0,0 +1,13 @@
+#pragma once
+#include "AbstractBeaconButton.h"
+
+class BeaconScreen;
+
+class BeaconCancelButton : public AbstractBeaconButton {
+public:
+    BeaconCancelButton(BeaconScreen* screen, int id, int x, int y);
+    void renderTooltip(int xm, int ym) override;
+
+private:
+    BeaconScreen* screen;
+};
\ No newline at end of file
diff --git a/Minecraft.Client/UI/BeaconConfirmButton.cpp b/Minecraft.Client/UI/BeaconConfirmButton.cpp
new file mode 100644
index 000000000..00871f6e1
--- /dev/null
+++ b/Minecraft.Client/UI/BeaconConfirmButton.cpp
@@ -0,0 +1,25 @@
+#include "../../Platform/stdafx.h"
+#include "BeaconConfirmButton.h"
+#include "Screens/BeaconScreen.h"
+#include "../../../Minecraft.World/Headers/net.minecraft.locale.h"
+
+// 4jcraft: referenced from MCP 8.11 (JE 1.6.4)
+#ifdef ENABLE_JAVA_GUIS
+extern ResourceLocation GUI_BEACON_LOCATION;
+#endif
+
+BeaconConfirmButton::BeaconConfirmButton(BeaconScreen* screen, int id, int x,
+                                         int y)
+    : AbstractBeaconButton(id, x, y) {
+    this->screen = screen;
+#ifdef ENABLE_JAVA_GUIS
+    this->iconRes = &GUI_BEACON_LOCATION;
+#endif
+    this->iconU = 90;
+    this->iconV = 220;
+}
+
+void BeaconConfirmButton::renderTooltip(int xm, int ym) {
+    screen->renderTooltip(Language::getInstance()->getElement(L"gui.done"), xm,
+                          ym);
+}
\ No newline at end of file
diff --git a/Minecraft.Client/UI/BeaconConfirmButton.h b/Minecraft.Client/UI/BeaconConfirmButton.h
new file mode 100644
index 000000000..ab1d28177
--- /dev/null
+++ b/Minecraft.Client/UI/BeaconConfirmButton.h
@@ -0,0 +1,13 @@
+#pragma once
+#include "AbstractBeaconButton.h"
+
+class BeaconScreen;
+
+class BeaconConfirmButton : public AbstractBeaconButton {
+public:
+    BeaconConfirmButton(BeaconScreen* screen, int id, int x, int y);
+    void renderTooltip(int xm, int ym) override;
+
+private:
+    BeaconScreen* screen;
+};
\ No newline at end of file
diff --git a/Minecraft.Client/UI/BeaconPowerButton.cpp b/Minecraft.Client/UI/BeaconPowerButton.cpp
new file mode 100644
index 000000000..958badfe7
--- /dev/null
+++ b/Minecraft.Client/UI/BeaconPowerButton.cpp
@@ -0,0 +1,39 @@
+#include "../../Platform/stdafx.h"
+#include "BeaconPowerButton.h"
+#include "Screens/BeaconScreen.h"
+#include "../../../Minecraft.World/Entities/MobEffect.h"
+#include "../../../Minecraft.World/Headers/net.minecraft.locale.h"
+#include "../Textures/Textures.h"
+#include "Textures/ResourceLocation.h"
+
+// 4jcraft: referenced from MCP 8.11 (JE 1.6.4)
+#ifdef ENABLE_JAVA_GUIS
+ResourceLocation GUI_INVENTORY_LOCATION = ResourceLocation(TN_GUI_INVENTORY);
+#endif
+
+BeaconPowerButton::BeaconPowerButton(BeaconScreen* screen, int id, int x, int y,
+                                     int effectId, int tier)
+    : AbstractBeaconButton(id, x, y) {
+    this->screen = screen;
+    this->effectId = effectId;
+    this->tier = tier;
+
+#ifdef ENABLE_JAVA_GUIS
+    this->iconRes = &GUI_INVENTORY_LOCATION;
+#endif
+
+    int statusIconIndex = MobEffect::javaId(effectId);
+    this->iconU = (statusIconIndex % 8) * 18;
+    this->iconV = 198 + (statusIconIndex / 8) * 18;
+}
+
+void BeaconPowerButton::renderTooltip(int xm, int ym) {
+    MobEffect* effect = MobEffect::effects[effectId];
+    if (!effect) return;
+
+    std::wstring name = app.GetString(effect->getDescriptionId());
+    if (tier >= 3 && effect->id != MobEffect::regeneration->id) {
+        name += L" II";
+    }
+    screen->renderTooltip(name, xm, ym);
+}
\ No newline at end of file
diff --git a/Minecraft.Client/UI/BeaconPowerButton.h b/Minecraft.Client/UI/BeaconPowerButton.h
new file mode 100644
index 000000000..fc6e40266
--- /dev/null
+++ b/Minecraft.Client/UI/BeaconPowerButton.h
@@ -0,0 +1,18 @@
+#pragma once
+#include "AbstractBeaconButton.h"
+#include "../../../Minecraft.World/Headers/net.minecraft.world.effect.h"
+
+class BeaconScreen;
+
+class BeaconPowerButton : public AbstractBeaconButton {
+public:
+    BeaconPowerButton(BeaconScreen* screen, int id, int x, int y, int effectId,
+                      int tier);
+    void renderTooltip(int xm, int ym) override;
+    bool isSelected() const { return selected; }
+
+private:
+    BeaconScreen* screen;
+    int effectId;
+    int tier;
+};
\ No newline at end of file
diff --git a/Minecraft.Client/UI/Screens/BeaconScreen.cpp b/Minecraft.Client/UI/Screens/BeaconScreen.cpp
new file mode 100644
index 000000000..d44378d83
--- /dev/null
+++ b/Minecraft.Client/UI/Screens/BeaconScreen.cpp
@@ -0,0 +1,229 @@
+#include "../../Platform/stdafx.h"
+#include "BeaconScreen.h"
+#include "../BeaconConfirmButton.h"
+#include "../BeaconCancelButton.h"
+#include "../BeaconPowerButton.h"
+#include <GL/gl.h>
+#include <memory>
+#include "../../Player/MultiPlayerLocalPlayer.h"
+#include "../../Rendering/Lighting.h"
+#include "../../Textures/Textures.h"
+#include "../../../Minecraft.World/Headers/net.minecraft.locale.h"
+#include "../../../Minecraft.World/Containers/Slot.h"
+#include "../../../Minecraft.World/Headers/net.minecraft.world.item.h"
+#include "../../../Minecraft.Client/Minecraft.h"
+#include "../../../Minecraft.Client/Network/ClientConnection.h"
+#include "../../../Minecraft.World/IO/Streams/ByteArrayOutputStream.h"
+#include "../../../Minecraft.World/IO/Streams/DataOutputStream.h"
+
+// 4jcraft: referenced from MCP 8.11 (JE 1.6.4) and the existing
+// container classes (and iggy too)
+#ifdef ENABLE_JAVA_GUIS
+ResourceLocation GUI_BEACON_LOCATION = ResourceLocation(TN_GUI_BEACON);
+#endif
+
+BeaconScreen::BeaconScreen(std::shared_ptr<Inventory> inventory,
+                           std::shared_ptr<BeaconTileEntity> beacon)
+    : AbstractContainerScreen(new BeaconMenu(inventory, beacon)) {
+    this->inventory = inventory;
+    this->beacon = beacon;
+    this->beaconMenu = static_cast<BeaconMenu*>(menu);
+    this->imageWidth = 230;
+    this->imageHeight = 219;
+    this->buttonsNotDrawn = true;
+    this->beaconConfirmButton = nullptr;
+}
+
+BeaconScreen::~BeaconScreen() = default;
+
+void BeaconScreen::init() {
+    AbstractContainerScreen::init();
+
+    int xo = (width - imageWidth) / 2;
+    int yo = (height - imageHeight) / 2;
+
+    beaconConfirmButton = new BeaconConfirmButton(this, -1, xo + 164, yo + 107);
+    buttons.push_back(beaconConfirmButton);
+    buttons.push_back(new BeaconCancelButton(this, -2, xo + 190, yo + 107));
+
+    buttonsNotDrawn = true;
+    beaconConfirmButton->active = false;
+}
+
+void BeaconScreen::tick() {
+    if (buttonsNotDrawn && beacon->getLevels() >= 0) {
+        buttonsNotDrawn = false;
+
+        int xo = (width - imageWidth) / 2;
+        int yo = (height - imageHeight) / 2;
+
+        for (int tier = 0; tier <= 2; ++tier) {
+            int effectCount = BeaconTileEntity::BEACON_EFFECTS_EFFECTS;
+            int actualCount = 0;
+            for (int e = 0; e < effectCount; ++e) {
+                if (BeaconTileEntity::BEACON_EFFECTS[tier][e] != nullptr) {
+                    actualCount++;
+                } else {
+                    break;
+                }
+            }
+
+            int totalWidth = actualCount * 22 + (actualCount - 1) * 2;
+            int startX = xo + 53 + (actualCount * 24 - totalWidth) / 2;
+
+            for (int e = 0; e < actualCount; ++e) {
+                MobEffect* effect = BeaconTileEntity::BEACON_EFFECTS[tier][e];
+                if (effect == nullptr) break;
+
+                int buttonId = (tier << 8) | effect->id;
+                BeaconPowerButton* button = new BeaconPowerButton(
+                    this, buttonId, startX + e * 24, yo + 22 + tier * 25,
+                    effect->id, tier);
+                buttons.push_back(button);
+
+                if (tier >= beacon->getLevels()) {
+                    button->active = false;
+                } else if (effect->id == beacon->getPrimaryPower()) {
+                    button->setSelected(true);
+                }
+            }
+        }
+
+        int tier = 3;
+        int effectCount = BeaconTileEntity::BEACON_EFFECTS_EFFECTS;
+        int actualCount = 0;
+        for (int e = 0; e < effectCount; ++e) {
+            if (BeaconTileEntity::BEACON_EFFECTS[tier][e] != nullptr) {
+                actualCount++;
+            } else {
+                break;
+            }
+        }
+
+        int totalWidth = (actualCount + 1) * 22 + actualCount * 2;
+        int startX = xo + 143 + ((actualCount + 1) * 24 - totalWidth) / 2;
+
+        for (int e = 0; e < actualCount; ++e) {
+            MobEffect* effect = BeaconTileEntity::BEACON_EFFECTS[tier][e];
+            if (effect == nullptr) break;
+
+            int buttonId = (tier << 8) | effect->id;
+            BeaconPowerButton* button = new BeaconPowerButton(
+                this, buttonId, startX + e * 24, yo + 47, effect->id, tier);
+            buttons.push_back(button);
+
+            if (tier >= beacon->getLevels()) {
+                button->active = false;
+            } else if (effect->id == beacon->getSecondaryPower()) {
+                button->setSelected(true);
+            }
+        }
+
+        if (beacon->getPrimaryPower() > 0) {
+            int buttonId = (tier << 8) | beacon->getPrimaryPower();
+            BeaconPowerButton* button =
+                new BeaconPowerButton(this, buttonId, startX + actualCount * 24,
+                                      yo + 47, beacon->getPrimaryPower(), tier);
+            buttons.push_back(button);
+
+            if (tier >= beacon->getLevels()) {
+                button->active = false;
+            } else if (beacon->getPrimaryPower() ==
+                       beacon->getSecondaryPower()) {
+                button->setSelected(true);
+            }
+        }
+    }
+
+    beaconConfirmButton->active =
+        (beacon->getItem(0) != nullptr && beacon->getPrimaryPower() > 0);
+}
+
+void BeaconScreen::removed() { AbstractContainerScreen::removed(); }
+
+void BeaconScreen::renderLabels() {
+    std::wstring primaryLabel =
+        Language::getInstance()->getElement(L"tile.beacon.primary");
+    font->drawShadow(primaryLabel, 25, 10, 0xE1E1E1);
+
+    std::wstring secondaryLabel =
+        Language::getInstance()->getElement(L"tile.beacon.secondary");
+    font->drawShadow(secondaryLabel, 125, 10, 0xE1E1E1);
+}
+
+void BeaconScreen::renderBg(float a) {
+#ifdef ENABLE_JAVA_GUIS
+    glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+    minecraft->textures->bindTexture(&GUI_BEACON_LOCATION);
+    int xo = (width - imageWidth) / 2;
+    int yo = (height - imageHeight) / 2;
+    blit(xo, yo, 0, 0, imageWidth, imageHeight);
+
+    // Render payment item icons
+    itemRenderer->renderGuiItem(
+        font, minecraft->textures,
+        std::shared_ptr<ItemInstance>(new ItemInstance(Item::emerald_Id, 1, 0)),
+        xo + 42, yo + 109);
+    itemRenderer->renderGuiItem(
+        font, minecraft->textures,
+        std::shared_ptr<ItemInstance>(new ItemInstance(Item::diamond_Id, 1, 0)),
+        xo + 42 + 22, yo + 109);
+    itemRenderer->renderGuiItem(font, minecraft->textures,
+                                std::shared_ptr<ItemInstance>(
+                                    new ItemInstance(Item::goldIngot_Id, 1, 0)),
+                                xo + 42 + 44, yo + 109);
+    itemRenderer->renderGuiItem(font, minecraft->textures,
+                                std::shared_ptr<ItemInstance>(
+                                    new ItemInstance(Item::ironIngot_Id, 1, 0)),
+                                xo + 42 + 66, yo + 109);
+#endif
+}
+
+void BeaconScreen::render(int xm, int ym, float a) {
+    AbstractContainerScreen::render(xm, ym, a);
+    for (Button* button : buttons) {
+        AbstractBeaconButton* beaconButton =
+            dynamic_cast<AbstractBeaconButton*>(button);
+        if (beaconButton && beaconButton->isHovered()) {
+            glDisable(GL_LIGHTING);
+            glDisable(GL_DEPTH_TEST);
+            beaconButton->renderTooltip(xm, ym);
+            glEnable(GL_LIGHTING);
+            glEnable(GL_DEPTH_TEST);
+            break;
+        }
+    }
+}
+
+void BeaconScreen::buttonClicked(Button* button) {
+    if (button->id == -2) {
+        minecraft->player->closeContainer();
+    } else if (button->id == -1) {
+        // 4jcraft: copied from IUIScene_BeaconMenu
+        ByteArrayOutputStream baos;
+        DataOutputStream dos(&baos);
+        dos.writeInt(beacon->getPrimaryPower());
+        dos.writeInt(beacon->getSecondaryPower());
+
+        minecraft->player->connection->send(
+            std::shared_ptr<CustomPayloadPacket>(new CustomPayloadPacket(
+                CustomPayloadPacket::SET_BEACON_PACKET, baos.toByteArray())));
+        minecraft->player->closeContainer();
+    } else if (dynamic_cast<BeaconPowerButton*>(button)) {
+        int effectId = button->id & 255;
+        int tier = button->id >> 8;
+
+        if (tier < 3) {
+            beacon->setPrimaryPower(effectId);
+        } else {
+            beacon->setSecondaryPower(effectId);
+        }
+
+        for (Button* btn : buttons) {
+            delete btn;
+        }
+        buttons.clear();
+        init();
+        tick();
+    }
+}
\ No newline at end of file
diff --git a/Minecraft.Client/UI/Screens/BeaconScreen.h b/Minecraft.Client/UI/Screens/BeaconScreen.h
new file mode 100644
index 000000000..03a9db927
--- /dev/null
+++ b/Minecraft.Client/UI/Screens/BeaconScreen.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "AbstractContainerScreen.h"
+#include "../../../Minecraft.World/Containers/BeaconMenu.h"
+#include "../../../Minecraft.World/Headers/net.minecraft.world.level.tile.entity.h"
+
+class BeaconConfirmButton;
+class BeaconCancelButton;
+
+class BeaconScreen : public AbstractContainerScreen {
+public:
+    BeaconScreen(std::shared_ptr<Inventory> inventory,
+                 std::shared_ptr<BeaconTileEntity> beacon);
+    virtual ~BeaconScreen();
+
+    void init() override;
+    void removed() override;
+    void tick() override;
+    void renderLabels() override;
+    void renderBg(float a) override;
+    void render(int xm, int ym, float a) override;
+    void buttonClicked(Button* button) override;
+
+    std::shared_ptr<BeaconTileEntity> getBeacon() { return beacon; }
+
+private:
+    std::shared_ptr<Inventory> inventory;
+    std::shared_ptr<BeaconTileEntity> beacon;
+    BeaconMenu* beaconMenu;
+    BeaconConfirmButton* beaconConfirmButton;
+    bool buttonsNotDrawn;
+};
\ No newline at end of file
diff --git a/Minecraft.Client/UI/Screens/TitleScreen.cpp b/Minecraft.Client/UI/Screens/TitleScreen.cpp
index 50b527600..650d49af8 100644
--- a/Minecraft.Client/UI/Screens/TitleScreen.cpp
+++ b/Minecraft.Client/UI/Screens/TitleScreen.cpp
@@ -5,6 +5,7 @@
 #include "JoinMultiplayerScreen.h"
 #include "../../Rendering/Tesselator.h"
 #include "../../Textures/Textures.h"
+#include "../../GameState/Options.h"
 #include "../../../Minecraft.World/Util/StringHelpers.h"
 #include "../../../Minecraft.World/IO/Streams/InputOutputStream.h"
 #include "../../../Minecraft.World/Headers/net.minecraft.locale.h"
diff --git a/Minecraft.World/Entities/MobEffect.cpp b/Minecraft.World/Entities/MobEffect.cpp
index a0822934f..828b5a4e3 100644
--- a/Minecraft.World/Entities/MobEffect.cpp
+++ b/Minecraft.World/Entities/MobEffect.cpp
@@ -443,4 +443,53 @@ void MobEffect::addAttributeModifiers(std::shared_ptr<LivingEntity> entity,
 double MobEffect::getAttributeModifierValue(int amplifier,
                                             AttributeModifier* original) {
     return original->getAmount() * (amplifier + 1);
+}
+
+// 4jcraft: helper for inventoryscreen and beaconscreen
+int MobEffect::javaId(int id) {
+    // mapped to java based on the inventory texture (see gui/inventory.png)
+    switch (id) {
+        case 1:
+            return 0;
+        case 2:
+            return 1;
+        case 3:
+            return 2;
+        case 4:
+            return 3;
+        case 5:
+            return 4;
+        case 18:
+            return 5;
+        case 19:
+            return 6;
+        case 10:
+            return 7;
+        case 14:
+            return 8;
+        case 17:
+            return 9;
+        case 8:
+            return 10;
+        case 9:
+            return 11;
+        case 16:
+            return 12;
+        case 15:
+            return 13;
+        case 11:
+            return 14;
+        case 12:
+            return 15;
+        case 13:
+            return 16;
+        case 20:
+            return 17;
+        case 21:
+            return 18;
+        case 22:
+            return 18;
+        default:
+            return 0;
+    }
 }
\ No newline at end of file
diff --git a/Minecraft.World/Entities/MobEffect.h b/Minecraft.World/Entities/MobEffect.h
index 8e7ccce17..5576a2b4b 100644
--- a/Minecraft.World/Entities/MobEffect.h
+++ b/Minecraft.World/Entities/MobEffect.h
@@ -134,4 +134,6 @@ public:
                                        int amplifier);
     virtual double getAttributeModifierValue(int amplifier,
                                              AttributeModifier* original);
+    static int javaId(
+        int id);  // 4jcraft: helper for inventoryscreen and beaconscreen
 };
\ No newline at end of file