From 2d33e90f931770c218cf833b28d93a236e213389 Mon Sep 17 00:00:00 2001
From: abel1502 <terragame.abel@gmail.com>
Date: Mon, 2 Jun 2025 00:59:22 +0300
Subject: [PATCH] Allow climbing freestanding chains and vines using spacebar

---
 .../com/hbm/main/ModEventHandlerClient.java   | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/main/java/com/hbm/main/ModEventHandlerClient.java b/src/main/java/com/hbm/main/ModEventHandlerClient.java
index a2ee8b962..fc9d0041f 100644
--- a/src/main/java/com/hbm/main/ModEventHandlerClient.java
+++ b/src/main/java/com/hbm/main/ModEventHandlerClient.java
@@ -68,6 +68,7 @@ import cpw.mods.fml.common.Loader;
 import cpw.mods.fml.common.eventhandler.EventPriority;
 import cpw.mods.fml.common.eventhandler.SubscribeEvent;
 import cpw.mods.fml.common.gameevent.InputEvent;
+import cpw.mods.fml.common.gameevent.TickEvent;
 import cpw.mods.fml.common.gameevent.TickEvent.ClientTickEvent;
 import cpw.mods.fml.common.gameevent.TickEvent.Phase;
 import cpw.mods.fml.common.gameevent.TickEvent.WorldTickEvent;
@@ -86,6 +87,7 @@ import net.minecraft.client.renderer.OpenGlHelper;
 import net.minecraft.client.renderer.RenderHelper;
 import net.minecraft.client.renderer.Tessellator;
 import net.minecraft.client.renderer.entity.RenderPlayer;
+import net.minecraft.client.settings.GameSettings;
 import net.minecraft.client.settings.KeyBinding;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
@@ -1098,6 +1100,28 @@ public class ModEventHandlerClient {
 		}
 	}
 
+	@SideOnly(Side.CLIENT)
+	@SubscribeEvent
+	public void onPlayerTick(TickEvent.PlayerTickEvent event) {
+		EntityPlayer player = event.player;
+
+		int x = MathHelper.floor_double(player.posX);
+		int y = MathHelper.floor_double(player.posY);
+		int z = MathHelper.floor_double(player.posZ);
+		Block b = player.worldObj.getBlock(x, y, z);
+
+		// Support climbing freestanding vines and chains using spacebar
+		if (
+			b.isLadder(player.worldObj, x, y, z, player) &&
+			b.getCollisionBoundingBoxFromPool(player.worldObj, x, y, z) == null &&
+			!player.capabilities.isFlying &&
+			GameSettings.isKeyDown(Minecraft.getMinecraft().gameSettings.keyBindJump) &&
+			player.motionY < 0.15
+		) {
+			player.motionY = 0.15;
+		}
+	}
+
 	@SideOnly(Side.CLIENT)
 	@SubscribeEvent(priority = EventPriority.LOW)
 	public void onMouseClicked(InputEvent.MouseInputEvent event) {