diff --git a/cambios.md b/cambios.md
index a5b3b1a..2430358 100644
--- a/cambios.md
+++ b/cambios.md
@@ -2,21 +2,19 @@
 
 ## novedades
 
-- cambiado de sistema de eventos
-- categoría de inventario
-
 ### adiciones
 
+- ahora se puede asignar un botón del ratón a un módulo
+
 #### módulos nuevos:
 
-- reponer: repone items a medida que se usan de forma automática
+- mochila: te permite llevar items en los slots de crafteo del inventario
+- tecla de perla: te permite lanzar una perla con tan solo un pulsamiento de tecla, siempre y cuando tengas en el inventario
 
 ### arreglos / mejoras
 
-- ahora el grosor de línea de hitboxes funciona
-- ahora cabezas de chatplus funciona, a medias
+- arreglada la cagada de Mojang de las teclas debug
 
 ## problemas reconocidos
 
-- es posible que algunos módulos hayan dejado de funcionar correctamente, ya que he cambiado de sistema de eventos
 - muchos, pero repórtalos en la página de problemas si quieres para que queden bien registrados 
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/Sputnik.java b/src/main/java/me/retucio/sputnik/Sputnik.java
index 4e60921..4ead360 100644
--- a/src/main/java/me/retucio/sputnik/Sputnik.java
+++ b/src/main/java/me/retucio/sputnik/Sputnik.java
@@ -132,8 +132,8 @@ public class Sputnik implements ClientModInitializer {
 
 
     // se ejecuta cada vez que se presiona una tecla
-    public void onKey(int key, int action) {
-        if (key == GLFW.GLFW_KEY_F3) return;  // prevenir activación de módulos al usar combinaciones de F3
+    public void onInput(int key, int action) {
+        if (key == GLFW.GLFW_KEY_F3) return;  // prevenir interrumpir combos de F3
 
         boolean anyFocused = isAnySettingButtonFocused() || ClickGUI.INSTANCE.getSearchBar().isFocused();
         ClickGUI.INSTANCE.setAnyFocused(anyFocused);
@@ -145,7 +145,10 @@ public class Sputnik implements ClientModInitializer {
                 handleClickGUIKey(key, anyFocused);
                 handleHudEditorKey(key, anyFocused);
             }
-            handleSettingButtonsKey(key, action);
+            // solo reenviar teclas del teclado
+            if (key >= 32) {
+                handleSettingButtonsKey(key, action);
+            }
         } else if (!anyFocused) {
             handleModuleRelease(key);
         }
diff --git a/src/main/java/me/retucio/sputnik/command/commands/BindCommand.java b/src/main/java/me/retucio/sputnik/command/commands/BindCommand.java
index db94779..3b1be55 100644
--- a/src/main/java/me/retucio/sputnik/command/commands/BindCommand.java
+++ b/src/main/java/me/retucio/sputnik/command/commands/BindCommand.java
@@ -5,12 +5,20 @@ import me.retucio.sputnik.command.Command;
 import me.retucio.sputnik.command.args.ModuleArgumentType;
 import me.retucio.sputnik.module.Module;
 import me.retucio.sputnik.module.setting.settings.KeySetting;
+import me.retucio.sputnik.ui.widgets.frames.settings.ClientSettingsFrame;
 import me.retucio.sputnik.util.ChatUtil;
 import me.retucio.sputnik.util.KeyUtil;
+import net.minecraft.client.input.KeyInput;
+import net.minecraft.client.option.KeyBinding;
+import net.minecraft.client.resource.language.I18n;
 import net.minecraft.command.CommandSource;
 import net.minecraft.text.Text;
 import net.minecraft.util.Formatting;
 
+import javax.swing.text.JTextComponent;
+import java.util.ArrayList;
+import java.util.List;
+
 // asignar una tecla a un módulo, lógica similar a BindButton
 public class BindCommand extends Command {
 
@@ -42,6 +50,24 @@ public class BindCommand extends Command {
     public static boolean onKeyPress(int key) {
         if (listeningModule == null) return false;
         KeySetting bind = listeningModule.getBind();
+
+        if (ClientSettingsFrame.guiSettings.multipleKeybinds.getValue()) {
+            List<KeyBinding> keys = new ArrayList<>(List.of(mc.options.allKeys));
+            keys.removeAll(List.of(mc.options.debugKeys));
+
+            for (KeyBinding kb : keys) {
+                boolean keyAlreadyBound = kb.matchesKey(new KeyInput(key, 0, 0));
+                boolean allowMultiple = ClientSettingsFrame.guiSettings.multipleKeybinds.getValue();
+
+                if (keyAlreadyBound && !allowMultiple) {
+                    ChatUtil.warn("esa tecla ya está cogida por "
+                            + Formatting.GREEN + "\"" + I18n.translate(kb.getId()) + "\"");
+                    listeningModule = null;
+                    return true;
+                }
+            }
+        }
+
         if (bind != null) bind.setValue(key);
 
         ChatUtil.info(
diff --git a/src/main/java/me/retucio/sputnik/event/render/Render3DEvent.java b/src/main/java/me/retucio/sputnik/event/render/Render3DEvent.java
index a100d1a..04d77b7 100644
--- a/src/main/java/me/retucio/sputnik/event/render/Render3DEvent.java
+++ b/src/main/java/me/retucio/sputnik/event/render/Render3DEvent.java
@@ -33,4 +33,8 @@ public class Render3DEvent extends Event {
     public Camera getCamera() {
         return camera;
     }
+
+    public float getTickDelta() {
+        return tc.getDynamicDeltaTicks();
+    }
 }
diff --git a/src/main/java/me/retucio/sputnik/mixin/mixins/io/KeyboardMixin.java b/src/main/java/me/retucio/sputnik/mixin/mixins/io/KeyboardMixin.java
index b1f25b2..eb887f8 100644
--- a/src/main/java/me/retucio/sputnik/mixin/mixins/io/KeyboardMixin.java
+++ b/src/main/java/me/retucio/sputnik/mixin/mixins/io/KeyboardMixin.java
@@ -17,7 +17,7 @@ public abstract class KeyboardMixin {
     @Inject(method = "onKey", at = @At("HEAD"), cancellable = true)
     private void onKeyPress(long window, int action, KeyInput input, CallbackInfo ci) {
         if (input.key() == -1) return;
-        Sputnik.INSTANCE.onKey(input.key(), action);
+        Sputnik.INSTANCE.onInput(input.key(), action);
         KeyEvent event = EVENT_BUS.post(new KeyEvent(input.key(), input.scancode(), action));
         if (event.isCancelled()) ci.cancel();
     }
diff --git a/src/main/java/me/retucio/sputnik/mixin/mixins/io/MouseMixin.java b/src/main/java/me/retucio/sputnik/mixin/mixins/io/MouseMixin.java
index 7427924..e60d428 100644
--- a/src/main/java/me/retucio/sputnik/mixin/mixins/io/MouseMixin.java
+++ b/src/main/java/me/retucio/sputnik/mixin/mixins/io/MouseMixin.java
@@ -1,5 +1,6 @@
 package me.retucio.sputnik.mixin.mixins.io;
 
+import me.retucio.sputnik.Sputnik;
 import me.retucio.sputnik.event.input.MouseClickEvent;
 import me.retucio.sputnik.event.input.MouseScrollEvent;
 import net.minecraft.client.Mouse;
@@ -16,6 +17,7 @@ public abstract class MouseMixin {
 
     @Inject(method = "onMouseButton", at = @At("HEAD"), cancellable = true)
     private void onMouseButton(long window, MouseInput input, int action, CallbackInfo ci) {
+        Sputnik.INSTANCE.onInput(input.button(), action);
         MouseClickEvent event = EVENT_BUS.post(new MouseClickEvent(action, input.button()));
         if (event.isCancelled()) ci.cancel();
     }
diff --git a/src/main/java/me/retucio/sputnik/module/ModuleManager.java b/src/main/java/me/retucio/sputnik/module/ModuleManager.java
index a31ae5c..fafcf37 100644
--- a/src/main/java/me/retucio/sputnik/module/ModuleManager.java
+++ b/src/main/java/me/retucio/sputnik/module/ModuleManager.java
@@ -40,6 +40,7 @@ public class ModuleManager {
         // añadir los módulos
         addCamera();
         addClient();
+        addInventory();
         addMisc();
         addMovement();
         addNetwork();
@@ -87,16 +88,25 @@ public class ModuleManager {
         add(new AnvilFont());
         add(new BookBot());
         add(new BossbarStack());
-        add(new BundleDupe());
         add(new ChatPlus());
-        add(new CreativeInventoryHotbarKeybinds());
         add(new FakePlayer());
         add(new Replenish());
         add(new ScreenshotPlus());
-        add(new ShulkerPeek());
         add(new UnfocusedCpu());
     }
 
+    private void addInventory() {
+        add(new BundleDupe());
+        add(new CreativeInventoryHotbarKeybinds());
+        add(new InventoryPlus());
+        add(new Offhand());
+        add(new PortalGUI());
+        add(new Replenish());
+        add(new ShulkerPeek());
+        add(new UIMove());
+        add(new XCarry());
+    }
+
     private void addMovement() {
         add(new BoatFly());
         add(new Dolphin());
@@ -129,12 +139,9 @@ public class ModuleManager {
         add(new Capes());
         add(new FastUse());
         add(new HandView());
-        add(new InventoryPlus());
+        add(new KeyPearl());
         add(new MaceKill());
         add(new NoFall());
-        add(new Offhand());
-        add(new PortalGUI());
-        add(new UIMove());
         add(new SpearKill());
         add(new WarnLowDurability());
     }
diff --git a/src/main/java/me/retucio/sputnik/module/modules/inventory/XCarry.java b/src/main/java/me/retucio/sputnik/module/modules/inventory/XCarry.java
new file mode 100644
index 0000000..8b3a717
--- /dev/null
+++ b/src/main/java/me/retucio/sputnik/module/modules/inventory/XCarry.java
@@ -0,0 +1,44 @@
+package me.retucio.sputnik.module.modules.inventory;
+
+import com.github.retucio.neutrino.EventListener;
+import me.retucio.sputnik.event.network.PacketEvent;
+import me.retucio.sputnik.module.Category;
+import me.retucio.sputnik.module.Module;
+import me.retucio.sputnik.util.ChatUtil;
+import net.minecraft.network.packet.c2s.play.CloseHandledScreenC2SPacket;
+
+public class XCarry extends Module {
+
+    private boolean invOpen;
+
+    public XCarry() {
+        super("mochila", "te permite llevar items en los slots de crafteo", Category.INVENTORY);
+    }
+
+    @Override
+    public void onEnable() {
+        if (mc.player != null) {
+            mc.player.networkHandler.sendPacket(new CloseHandledScreenC2SPacket(mc.player.playerScreenHandler.syncId));
+        }
+        invOpen = false;
+        super.onEnable();
+    }
+
+    @Override
+    public void onDisable() {
+        if (invOpen && mc.player != null) {
+            mc.player.networkHandler.sendPacket(new CloseHandledScreenC2SPacket(mc.player.playerScreenHandler.syncId));
+        }
+        super.onDisable();
+    }
+
+
+    @EventListener
+    public void onSendPacket(PacketEvent.Send event) {
+        if (event.getPacket() instanceof CloseHandledScreenC2SPacket packet
+                && packet.getSyncId() == mc.player.playerScreenHandler.syncId) {
+            invOpen = true;
+            event.cancel();
+        }
+    }
+}
diff --git a/src/main/java/me/retucio/sputnik/module/modules/player/KeyPearl.java b/src/main/java/me/retucio/sputnik/module/modules/player/KeyPearl.java
new file mode 100644
index 0000000..0917d45
--- /dev/null
+++ b/src/main/java/me/retucio/sputnik/module/modules/player/KeyPearl.java
@@ -0,0 +1,80 @@
+package me.retucio.sputnik.module.modules.player;
+
+import me.retucio.sputnik.module.Category;
+import me.retucio.sputnik.module.Module;
+import me.retucio.sputnik.module.setting.settings.BooleanSetting;
+import me.retucio.sputnik.util.ChatUtil;
+import me.retucio.sputnik.util.InventoryUtil;
+import net.minecraft.entity.player.PlayerInventory;
+import net.minecraft.item.Items;
+
+public class KeyPearl extends Module {
+
+    private final BooleanSetting swapBack = sgGeneral.add(new BooleanSetting(
+            "cambiar de vuelta",
+            "cambiar el ítem de vuelta a su lugar o seleccionar el slot original",
+            true
+    ));
+
+    public KeyPearl() {
+        super("tecla de perla", "lanza una perla con una tecla", Category.PLAYER);
+        keyMode.setValue(KeyModes.HOLD);
+    }
+
+    private int prevSlot = -1;
+    private int prevStackSlot = -1;
+    private boolean didMoveItem = false;
+
+    @Override
+    public void onEnable() {
+        if (mc.player == null) return;
+        switchToPearl();
+        super.onEnable();
+    }
+
+    @Override
+    // al desactivar para poder prever la trayectoria si trayectorias está activado
+    public void onDisable() {
+        throwPearl();
+        switchBack();
+        prevSlot = -1;
+        prevStackSlot = -1;
+        didMoveItem = false;
+        super.onDisable();
+    }
+
+    private void switchToPearl() {
+        PlayerInventory inv = mc.player.getInventory();
+
+        int slot = InventoryUtil.findSlot(stack -> stack.isOf(Items.ENDER_PEARL));
+        if (slot < 0) {
+            ChatUtil.error("no tienes perlas");
+            toggle();
+            return;
+        }
+
+        if (PlayerInventory.isValidHotbarIndex(slot)) {
+            prevSlot = inv.getSelectedSlot();
+            inv.setSelectedSlot(slot);
+            return;
+        }
+
+        InventoryUtil.swapWithHotbar(slot, inv.getSelectedSlot());
+        didMoveItem = true;
+        prevStackSlot = slot;
+    }
+
+    private void throwPearl() {
+        if (!mc.player.getMainHandStack().isOf(Items.ENDER_PEARL)) return;
+        mc.doItemUse();
+    }
+
+    private void switchBack() {
+        if (!swapBack.getValue()) return;
+        if (didMoveItem) {
+            InventoryUtil.swapWithHotbar(prevStackSlot, mc.player.getInventory().getSelectedSlot());
+        } else {
+            mc.player.getInventory().setSelectedSlot(prevSlot);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java b/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java
index 373f2fa..5b4adc4 100644
--- a/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java
+++ b/src/main/java/me/retucio/sputnik/module/modules/player/NoFall.java
@@ -143,7 +143,7 @@ public class NoFall extends Module {
 
     private ItemStack getMlgItem() {
         for (Item item : items.getEnabledOptions()) {
-            ItemStack stack = InventoryUtil.getStackOf(item);
+            ItemStack stack = InventoryUtil.find(itemStack -> itemStack.isOf(item));
             if (stack != null && PlayerInventory.isValidHotbarIndex(mc.player.getInventory().getSlotWithStack(stack))) {
                 return stack;
             }
diff --git a/src/main/java/me/retucio/sputnik/module/setting/settings/KeySetting.java b/src/main/java/me/retucio/sputnik/module/setting/settings/KeySetting.java
index 1349756..747eadd 100644
--- a/src/main/java/me/retucio/sputnik/module/setting/settings/KeySetting.java
+++ b/src/main/java/me/retucio/sputnik/module/setting/settings/KeySetting.java
@@ -32,7 +32,7 @@ public class KeySetting extends Setting<Integer> {
 
         if (ModuleManager.INSTANCE != null) {
             for (Module module : ModuleManager.INSTANCE.getModules())
-                if (module.getKey() == value && !ClientSettingsFrame.guiSettings.multipleKeybinds.getValue() && value != -1) {
+                if (module.getKey() == value && value != -1) {
                     module.setKey(-1);
                     ChatUtil.info("tecla del módulo " + module.getName() + " restablecida");
                 }
diff --git a/src/main/java/me/retucio/sputnik/ui/screen/ClickGUI.java b/src/main/java/me/retucio/sputnik/ui/screen/ClickGUI.java
index e719838..7ee072d 100644
--- a/src/main/java/me/retucio/sputnik/ui/screen/ClickGUI.java
+++ b/src/main/java/me/retucio/sputnik/ui/screen/ClickGUI.java
@@ -408,11 +408,11 @@ public class ClickGUI extends Screen {
 
     // selección de widgets
 
-    public Widget getSelected() {
+    public @Nullable Widget getSelected() {
         return selected;
     }
 
-    public void setSelected(Widget widget) {
+    public void setSelected(@Nullable Widget widget) {
         this.selected = widget;
     }
 
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/ModuleButton.java b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/ModuleButton.java
index e5c751e..9d7d0a7 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/ModuleButton.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/ModuleButton.java
@@ -51,7 +51,7 @@ public class ModuleButton extends Button {
                     ClickGUI.INSTANCE.closeSettingsFrame(module);
                 else
                     ClickGUI.INSTANCE.openSettingsFrame(module,
-                            parent.getX() + parent.getW() + 120, parent.getRenderY() + offset);
+                            parent.getX() + parent.getW() + 120, parent.getY() + offset);
             }
         }
     }
diff --git a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/BindButton.java b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/BindButton.java
index a42ca04..f5ff00e 100644
--- a/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/BindButton.java
+++ b/src/main/java/me/retucio/sputnik/ui/widgets/buttons/settings/BindButton.java
@@ -15,6 +15,9 @@ import net.minecraft.client.resource.language.I18n;
 import net.minecraft.util.Formatting;
 import org.lwjgl.glfw.GLFW;
 
+import java.util.ArrayList;
+import java.util.List;
+
 
 // botón para configurar la tecla asignada a un módulo. comienza a escuchar al hacerle clic.
 public class BindButton extends SettingButton<KeySetting> {
@@ -41,15 +44,38 @@ public class BindButton extends SettingButton<KeySetting> {
 
     @Override
     public void mouseClicked(int mouseX, int mouseY, int button) {
-        if (isHovered(mouseX, mouseY) && ClickGUI.INSTANCE.trySelect(this)) {
-            if (button == 0) {
-                listening = !listening;
-            }
-            else if (button == 1 && KeyUtil.isShiftDown()) {
-                setting.reset();
+        boolean hovered = isHovered(mouseX, mouseY);
+
+        if (hovered && ClickGUI.INSTANCE.trySelect(this)) {
+            if (listening) {
+                List<KeyBinding> keys = new ArrayList<>(List.of(mc.options.allKeys));
+                keys.removeAll(List.of(mc.options.debugKeys));
+                boolean allowMultiple = ClientSettingsFrame.guiSettings.multipleKeybinds.getValue();
+
+                for (KeyBinding bind : keys) {
+                    if (bind.matchesKey(new KeyInput(button, 0, 0))) {
+                        if (!allowMultiple) {
+                            ChatUtil.warn("esa tecla ya está cogida por "
+                                    + Formatting.GREEN + "\"" + I18n.translate(bind.getId()) + "\"");
+                            listening = false;
+                            return;
+                        }
+                    }
+                }
+
+                setting.setValue(button);
+                listening = false;
+            } else {
+                if (button == 0) {
+                    listening = true;
+                } else if (button == 1 && KeyUtil.isShiftDown()) {
+                    setting.reset();
+                }
             }
         } else {
-            listening = false;
+            if (listening) {
+                listening = false;
+            }
         }
     }
 
@@ -59,7 +85,9 @@ public class BindButton extends SettingButton<KeySetting> {
         if (key == GLFW.GLFW_KEY_ESCAPE) {
             setting.setValue(GLFW.GLFW_KEY_UNKNOWN);
         } else {
-            for (KeyBinding bind : mc.options.allKeys) {
+            List<KeyBinding> keys = new ArrayList<>(List.of(mc.options.allKeys));
+            keys.removeAll(List.of(mc.options.debugKeys));
+            for (KeyBinding bind : keys) {
                 // no permitir usar la misma tecla para varias acciones, si el ajuste para esto está activado
                 boolean keyAlreadyBound = bind.matchesKey(new KeyInput(key, 0, 0));
                 boolean allowMultiple = ClientSettingsFrame.guiSettings.multipleKeybinds.getValue();
diff --git a/src/main/java/me/retucio/sputnik/util/InventoryUtil.java b/src/main/java/me/retucio/sputnik/util/InventoryUtil.java
index 8c2abbc..7bdd157 100644
--- a/src/main/java/me/retucio/sputnik/util/InventoryUtil.java
+++ b/src/main/java/me/retucio/sputnik/util/InventoryUtil.java
@@ -47,6 +47,17 @@ public class InventoryUtil {
         return null;
     }
 
+    public static int findSlot(Predicate<ItemStack> predicate) {
+        if (mc.player == null) return -1;
+        for (int i = 0; i < mc.player.getInventory().size(); i++) {
+            ItemStack stack = mc.player.getInventory().getStack(i);
+            if (predicate.test(stack)) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
     public static List<ItemStack> findAll(Predicate<ItemStack> predicate) {
         List<ItemStack> stacks = new ArrayList<>();
         if (mc.player == null) return stacks;
@@ -59,14 +70,6 @@ public class InventoryUtil {
         return stacks;
     }
 
-    public static ItemStack getStackOf(Item item) {
-        if (mc.player == null) return null;
-        for (ItemStack stack : mc.player.getInventory())
-            if (stack.getItem() == item)
-                return stack;
-        return null;
-    }
-
     public static List<ItemStack> getStacksOfTag(TagKey<Item> tag) {
         if (mc.player == null) return null;
         List<ItemStack> stacks = new ArrayList<>();
diff --git a/src/main/java/me/retucio/sputnik/util/KeyUtil.java b/src/main/java/me/retucio/sputnik/util/KeyUtil.java
index d0693c0..76f2024 100644
--- a/src/main/java/me/retucio/sputnik/util/KeyUtil.java
+++ b/src/main/java/me/retucio/sputnik/util/KeyUtil.java
@@ -5,6 +5,7 @@ import net.minecraft.client.input.KeyInput;
 import net.minecraft.client.option.KeyBinding;
 import org.lwjgl.glfw.GLFW;
 
+import java.util.List;
 import java.awt.*;
 import java.awt.event.KeyEvent;
 import java.awt.im.InputContext;
diff --git a/src/main/java/me/retucio/sputnik/util/render/RenderUtil.java b/src/main/java/me/retucio/sputnik/util/render/RenderUtil.java
index ae7d332..17f9b9d 100644
--- a/src/main/java/me/retucio/sputnik/util/render/RenderUtil.java
+++ b/src/main/java/me/retucio/sputnik/util/render/RenderUtil.java
@@ -19,34 +19,52 @@ public class RenderUtil {
 
     // líneas
 
-    public static void drawHorizontalLine(MatrixStack matrices, float x1, float x2, float y, Color color) {
-        if (x2 < x1) {
-            float i = x1;
-            x1 = x2;
-            x2 = i;
-        }
+    public static void drawLine(MatrixStack matrices, Vec3d start, Vec3d end, Color color, float lineWidth) {
+        Camera camera = mc.gameRenderer.getCamera();
+        Vec3d cameraPos = camera.getCameraPos();
 
-        drawFilledRect(matrices, x1, y, x2 + 1, y + 1, color);
+        float startX = (float) (start.x - cameraPos.x);
+        float startY = (float) (start.y - cameraPos.y);
+        float startZ = (float) (start.z - cameraPos.z);
+        float endX   = (float) (end.x - cameraPos.x);
+        float endY   = (float) (end.y - cameraPos.y);
+        float endZ   = (float) (end.z - cameraPos.z);
+
+        BufferBuilder buffer = tesselator.begin(VertexFormat.DrawMode.LINES, VertexFormats.POSITION_COLOR_NORMAL_LINE_WIDTH);
+
+        float nx = -1.0f, ny = -1f, nz = -1.0f;
+
+        buffer.vertex(matrices.peek().getPositionMatrix(), startX, startY, startZ)
+                .color(color.getRGB())
+                .normal(nx, ny, nz)
+                .lineWidth(lineWidth);
+        buffer.vertex(matrices.peek().getPositionMatrix(), endX, endY, endZ)
+                .color(color.getRGB())
+                .normal(nx, ny, nz)
+                .lineWidth(lineWidth);
+
+        Layers.lines().draw(buffer.end());
     }
 
-    public static void drawVerticalLine(MatrixStack matrices, float x, float y1, float y2, Color color) {
-        if (y2 < y1) {
-            float i = y1;
-            y1 = y2;
-            y2 = i;
-        }
+    public static void drawLine2D(MatrixStack matrices, float x1, float y1, float x2, float y2, Color color, float lineWidth) {
+        float r = color.getRed() / 255f;
+        float g = color.getGreen() / 255f;
+        float b = color.getBlue() / 255f;
+        float a = color.getAlpha() / 255f;
 
-        drawFilledRect(matrices, x, y1 + 1, x + 1, y2, color);
-    }
+        BufferBuilder buffer = tesselator.begin(VertexFormat.DrawMode.LINES, VertexFormats.POSITION_COLOR_NORMAL_LINE_WIDTH);
+        float nx = 0, ny = 0, nz = 1; // normals not used
 
-    public static void drawHorizontalLine(MatrixStack matrices, float x1, float x2, float y, Color color, float width) {
-        if (x2 < x1) {
-            float i = x1;
-            x1 = x2;
-            x2 = i;
-        }
+        buffer.vertex(matrices.peek().getPositionMatrix(), x1, y1, 0)
+                .color(r, g, b, a)
+                .normal(nx, ny, nz)
+                .lineWidth(lineWidth);
+        buffer.vertex(matrices.peek().getPositionMatrix(), x2, y2, 0)
+                .color(r, g, b, a)
+                .normal(nx, ny, nz)
+                .lineWidth(lineWidth);
 
-        drawFilledRect(matrices, x1, y, x2 + width, y + width, color);
+        Layers.lines().draw(buffer.end());
     }
 
     public static void drawVector(MatrixStack matrices, Vector3f start, Vec3d direction, Color c, float lineWidth) {
@@ -77,18 +95,8 @@ public class RenderUtil {
         Layers.lines().draw(buffer.end());
     }
 
-    public static void drawVerticalLine(MatrixStack matrices, float x, float y1, float y2, Color color, float width) {
-        if (y2 < y1) {
-            float i = y1;
-            y1 = y2;
-            y2 = i;
-        }
 
-        drawFilledRect(matrices, x, y1 + width, x + width, y2, color);
-    }
-
-
-    // caras
+    /* caras */
 
     public static void drawFilledRect(MatrixStack matrices, float x, float y, float width, float height, Color color) {
         float r = color.getRed() / 255f;
@@ -110,13 +118,6 @@ public class RenderUtil {
         matrices.pop();
     }
 
-    public static void drawRectOutlines(MatrixStack stack, float x1, float y1, float x2, float y2, Color color, float width) {
-        drawHorizontalLine(stack, x1, x2, y1, color, width);
-        drawVerticalLine(stack, x2, y1, y2, color, width);
-        drawHorizontalLine(stack, x1, x2, y2, color, width);
-        drawVerticalLine(stack, x1, y1, y2, color, width);
-    }
-
     public static void drawBlockFaceOutlines(MatrixStack matrices, BlockPos pos, Direction face, Color color, float lineWidth, boolean cull) {
         Vec3d cameraPos = mc.gameRenderer.getCamera().getCameraPos();
 
@@ -303,6 +304,19 @@ public class RenderUtil {
     }
 
 
+    public static void drawTriangle(MatrixStack matrices, float x1, float y1, float x2, float y2, float x3, float y3, Color color) {
+        float r = color.getRed() / 255f;
+        float g = color.getGreen() / 255f;
+        float b = color.getBlue() / 255f;
+        float a = color.getAlpha() / 255f;
+
+        BufferBuilder buffer = tesselator.begin(VertexFormat.DrawMode.TRIANGLES, VertexFormats.POSITION_COLOR);
+        buffer.vertex(matrices.peek().getPositionMatrix(), x1, y1, 0).color(r, g, b, a);
+        buffer.vertex(matrices.peek().getPositionMatrix(), x2, y2, 0).color(r, g, b, a);
+        buffer.vertex(matrices.peek().getPositionMatrix(), x3, y3, 0).color(r, g, b, a);
+        Layers.quads().draw(buffer.end());
+    }
+
     // cajas
 
     public static void drawOutlineBox(MatrixStack matrices, Box box, Color color, float lineWidth, boolean cull) {