Lophine/lophine-server/minecraft-patches/features/0032-Leaves-Creative-fly-no-clip.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Helvetica Volubi <suisuroru@blue-millennium.fun>
Date: Sun, 8 Mar 2026 23:56:06 +0800
Subject: [PATCH] Leaves: Creative fly no clip

Co-authored by: violetc <58360096+s-yh-china@users.noreply.github.com>
As a part of : Leaves (https://github.com/LeavesMC/Leaves/blob/da12a58e8d3bd3cd13b52a60676d5a1e03acd30a/leaves-server/minecraft-patches/features/0049-Creative-fly-no-clip.patch)
Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)

diff --git a/net/minecraft/world/entity/ExperienceOrb.java b/net/minecraft/world/entity/ExperienceOrb.java
index 700c9c0d40dee1df6c97f7c63ad731f16bc5f3e7..b95c56e0699fbe16e65efcf010cd514f0ac0962f 100644
--- a/net/minecraft/world/entity/ExperienceOrb.java
+++ b/net/minecraft/world/entity/ExperienceOrb.java
@@ -204,7 +204,7 @@ public class ExperienceOrb extends Entity {
         Player prevTarget = this.followingPlayer; // CraftBukkit - store old target
         if (this.followingPlayer == null || this.followingPlayer.isSpectator() || this.followingPlayer.distanceToSqr(this) > 64.0) {
             Player nearestPlayer = this.level().getNearestPlayer(this, 8.0);
-            if (nearestPlayer != null && !nearestPlayer.isSpectator() && !nearestPlayer.isDeadOrDying()) {
+            if (nearestPlayer != null && !nearestPlayer.isCreativeFlyOrSpectator() && !nearestPlayer.isDeadOrDying()) { // Leaves - creative no clip
                 this.followingPlayer = nearestPlayer;
             } else {
                 this.followingPlayer = null;
diff --git a/net/minecraft/world/entity/player/Player.java b/net/minecraft/world/entity/player/Player.java
index f063e9b7601480d0e66da22ea8e5bec2e8619fee..d46abbea2153cac2d939416fafeac7f905fe0e02 100644
--- a/net/minecraft/world/entity/player/Player.java
+++ b/net/minecraft/world/entity/player/Player.java
@@ -284,8 +284,8 @@ public abstract class Player extends Avatar implements ContainerUser {
         if (this.cullTask != null) this.cullTask.requestCullSignal(); // Luminol - Ray tracing entity tracker
         // Luminol end
 
-        this.noPhysics = this.isSpectator();
-        if (this.isSpectator() || this.isPassenger()) {
+        this.noPhysics = this.isCreativeFlyOrSpectator(); // Leaves - creative no clip
+        if (this.isCreativeFlyOrSpectator() || this.isPassenger()) { // Leaves - creative no clip
             this.setOnGround(false);
         }
 
@@ -411,7 +411,7 @@ public abstract class Player extends Avatar implements ContainerUser {
         if (this.canPlayerFitWithinBlocksAndEntitiesWhen(Pose.SWIMMING)) {
             Pose desiredPose = this.getDesiredPose();
             Pose actualPose;
-            if (this.isSpectator() || this.isPassenger() || this.canPlayerFitWithinBlocksAndEntitiesWhen(desiredPose)) {
+            if (this.isCreativeFlyOrSpectator() || this.isPassenger() || this.canPlayerFitWithinBlocksAndEntitiesWhen(desiredPose)) { // Leaves - creative no clip
                 actualPose = desiredPose;
             } else if (this.canPlayerFitWithinBlocksAndEntitiesWhen(Pose.CROUCHING)) {
                 actualPose = Pose.CROUCHING;
@@ -540,7 +540,7 @@ public abstract class Player extends Avatar implements ContainerUser {
         this.updateSwingTime();
         this.yHeadRot = this.getYRot();
         this.setSpeed((float)this.getAttributeValue(Attributes.MOVEMENT_SPEED));
-        if (this.getHealth() > 0.0F && !this.isSpectator()) {
+        if (this.getHealth() > 0.0F && !this.isCreativeFlyOrSpectator()) { // Leaves - creative no clip
             AABB pickupArea;
             if (this.isPassenger() && !this.getVehicle().isRemoved()) {
                 pickupArea = this.getBoundingBox().minmax(this.getVehicle().getBoundingBox()).inflate(1.0, 0.0, 1.0);
@@ -1872,6 +1872,26 @@ public abstract class Player extends Avatar implements ContainerUser {
         return this.gameMode() == GameType.SPECTATOR;
     }
 
+    // Leaves start - creative no clip
+    public boolean isCreativeFlyOrSpectator() {
+        return isSpectator() || (fun.bm.lophine.carpet.config.modules.GeneralCompatConfig.creativeNoClip && isCreative() && getAbilities().flying);
+    }
+
+    public boolean canSpectatingPlace(final net.minecraft.world.level.LevelReader world, final BlockState state, final BlockPos pos, final net.minecraft.world.phys.shapes.CollisionContext context) {
+        if (this.isCreativeFlyOrSpectator()) {
+            net.minecraft.world.phys.shapes.VoxelShape voxelShape = state.getCollisionShape(world, pos, context);
+            return voxelShape.isEmpty() || world.isUnobstructed(this, voxelShape.move(pos.getX(), pos.getY(), pos.getZ()));
+        } else {
+            return world.isUnobstructed(state, pos, context);
+        }
+    }
+
+    @Override
+    public boolean isCollidable(final boolean ignoreClimbing) {
+        return !isCreativeFlyOrSpectator() && super.isCollidable(ignoreClimbing);
+    }
+    // Leaves end - creative no clip
+
     @Override
     public boolean isPickable() {
         return !this.isSpectator() && super.isPickable();
diff --git a/net/minecraft/world/item/BlockItem.java b/net/minecraft/world/item/BlockItem.java
index f4b68c02c2beea4438cb4cd212ad70c78cfc68d3..4e31e25df5d57086027413bb5e6aa0e4f39452c7 100644
--- a/net/minecraft/world/item/BlockItem.java
+++ b/net/minecraft/world/item/BlockItem.java
@@ -160,8 +160,9 @@ public class BlockItem extends Item {
         Player player = context.getPlayer();
         // CraftBukkit start
         Level world = context.getLevel(); // Paper - Cancel hit for vanished players
+        CollisionContext collisionContext = player == null ? CollisionContext.empty() : CollisionContext.placementContext(player); // Leaves - creative no clip
         boolean canBuild = (!this.mustSurvive() || stateForPlacement.canSurvive(world, context.getClickedPos()))
-            && world.checkEntityCollision(stateForPlacement, player, CollisionContext.placementContext(player), context.getClickedPos(), true); // Paper - Cancel hit for vanished players
+            && ((fun.bm.lophine.carpet.config.modules.GeneralCompatConfig.creativeNoClip && context.getPlayer() != null) ? context.getPlayer().canSpectatingPlace(world, stateForPlacement, context.getClickedPos(), collisionContext) : world.checkEntityCollision(stateForPlacement, player, collisionContext, context.getClickedPos(), true)); // Paper - Cancel hit for vanished players // Leaves - creative no clip
         org.bukkit.entity.Player bukkitPlayer = (context.getPlayer() instanceof ServerPlayer) ? (org.bukkit.entity.Player) context.getPlayer().getBukkitEntity() : null;
 
         org.bukkit.event.block.BlockCanBuildEvent event = new org.bukkit.event.block.BlockCanBuildEvent(
diff --git a/net/minecraft/world/item/StandingAndWallBlockItem.java b/net/minecraft/world/item/StandingAndWallBlockItem.java
index 1f17f966882320b3a2ced50b3f73925cd0dfa14c..5a75df997c9026bcc740823d7039c8e426ea345a 100644
--- a/net/minecraft/world/item/StandingAndWallBlockItem.java
+++ b/net/minecraft/world/item/StandingAndWallBlockItem.java
@@ -44,7 +44,7 @@ public class StandingAndWallBlockItem extends BlockItem {
         // return stateForPlacement != null && level.isUnobstructed(stateForPlacement, pos, CollisionContext.empty()) ? stateForPlacement : null;
         // CraftBukkit start
         if (stateForPlacement != null) {
-            boolean defaultReturn = level.isUnobstructed(stateForPlacement, pos, CollisionContext.empty());
+            boolean defaultReturn = (fun.bm.lophine.carpet.config.modules.GeneralCompatConfig.creativeNoClip && context.getPlayer() != null) ? context.getPlayer().canSpectatingPlace(level, stateForPlacement, pos, CollisionContext.empty()) : level.isUnobstructed(stateForPlacement, pos, CollisionContext.empty()); // Leaves - creative no clip
             org.bukkit.entity.Player player = (context.getPlayer() instanceof net.minecraft.server.level.ServerPlayer serverPlayer) ? serverPlayer.getBukkitEntity() : null;
 
             org.bukkit.event.block.BlockCanBuildEvent event = new org.bukkit.event.block.BlockCanBuildEvent(org.bukkit.craftbukkit.block.CraftBlock.at(context.getLevel(), pos), player, stateForPlacement.asBlockData(), defaultReturn, org.bukkit.craftbukkit.CraftEquipmentSlot.getHand(context.getHand())); // Paper - Expose hand in BlockCanBuildEvent
diff --git a/net/minecraft/world/level/block/entity/ShulkerBoxBlockEntity.java b/net/minecraft/world/level/block/entity/ShulkerBoxBlockEntity.java
index 8025fec49e6b9550d6154d6e735c6a39a2352f24..2c27de099c203b51b0fb317a8160402b3189e41c 100644
--- a/net/minecraft/world/level/block/entity/ShulkerBoxBlockEntity.java
+++ b/net/minecraft/world/level/block/entity/ShulkerBoxBlockEntity.java
@@ -153,7 +153,7 @@ public class ShulkerBoxBlockEntity extends RandomizableContainerBlockEntity impl
             List<Entity> entities = level.getEntities(null, aabb);
             if (!entities.isEmpty()) {
                 for (Entity entity : entities) {
-                    if (entity.getPistonPushReaction() != PushReaction.IGNORE) {
+                    if (entity.getPistonPushReaction() != PushReaction.IGNORE && !(entity instanceof net.minecraft.world.entity.player.Player player && player.isCreativeFlyOrSpectator())) { // Leaves - creative no clip
                         entity.move(
                             MoverType.SHULKER_BOX,
                             new Vec3(
diff --git a/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java b/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java
index 15605dacaec3860e476a70dbdd3743e4197f67a6..199f23547fded9b7d311b9cf21484d863748fd1c 100644
--- a/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java
+++ b/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java
@@ -168,7 +168,7 @@ public class PistonMovingBlockEntity extends BlockEntity {
                                         dz = movement.getStepZ();
                                 }
 
-                                entity.setDeltaMovement(dx, dy, dz);
+                                if (!(entity instanceof net.minecraft.world.entity.player.Player player) || !player.isCreativeFlyOrSpectator()) entity.setDeltaMovement(dx, dy, dz); // Leaves - creative no clip
                                 // Paper - EAR items stuck in slime pushed by a piston
                                 entity.activatedTick = Math.max(entity.activatedTick, io.papermc.paper.threadedregions.RegionizedServer.getCurrentTick() + 10); // Folia - region threading
                                 entity.activatedImmunityTick = Math.max(entity.activatedImmunityTick, io.papermc.paper.threadedregions.RegionizedServer.getCurrentTick() + 10); // Folia - region threading
@@ -204,6 +204,7 @@ public class PistonMovingBlockEntity extends BlockEntity {
     }
 
     private static void moveEntityByPiston(final Direction pistonDirection, final Entity entity, final double delta, final Direction movement) {
+        if (entity instanceof net.minecraft.world.entity.player.Player player && player.isCreativeFlyOrSpectator()) return; // Leaves - creative no clip
         NOCLIP.set(pistonDirection);
         Vec3 previousPos = entity.position();
         entity.move(MoverType.PISTON, new Vec3(delta * movement.getStepX(), delta * movement.getStepY(), delta * movement.getStepZ()));