Split Position from Location type hierarchy

patches/api/0487-Split-Position-from-Location-type-hierarchy.patch

@@ -0,0 +1,51 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Tue, 19 Dec 2023 23:39:49 -0800
+Subject: [PATCH] Split Position from Location type hierarchy
+
+
+diff --git a/src/main/java/org/bukkit/Location.java b/src/main/java/org/bukkit/Location.java
+index 65618b6b3c950fb27707f243a766511d6cd3aab4..0c82941c045ddede59da69f865f27b3e4a0f5a12 100644
+--- a/src/main/java/org/bukkit/Location.java
++++ b/src/main/java/org/bukkit/Location.java
+@@ -30,7 +30,7 @@ import org.bukkit.entity.Player;
+  * magnitude than 360 are valid, but may be normalized to any other equivalent
+  * representation by the implementation.
+  */
+-public class Location implements Cloneable, ConfigurationSerializable, io.papermc.paper.math.FinePosition { // Paper
++public class Location implements Cloneable, ConfigurationSerializable/*, io.papermc.paper.math.FinePosition*/ { // Paper
+     private Reference<World> world;
+     private double x;
+     private double y;
+@@ -1156,29 +1156,8 @@ public class Location implements Cloneable, ConfigurationSerializable, io.paperm
+     }
+ 
+     // Paper - add Position
+-    @Override
+-    public double x() {
+-        return this.getX();
+-    }
+-
+-    @Override
+-    public double y() {
+-        return this.getY();
+-    }
+-
+-    @Override
+-    public double z() {
+-        return this.getZ();
+-    }
+-
+-    @Override
+-    public boolean isFinite() {
+-        return io.papermc.paper.math.FinePosition.super.isFinite() && Float.isFinite(this.getYaw()) && Float.isFinite(this.getPitch());
+-    }
+-
+-    @Override
+-    public @NotNull Location toLocation(@NotNull World world) {
+-        return new Location(world, this.x(), this.y(), this.z(), this.getYaw(), this.getPitch());
++    public io.papermc.paper.math.@NotNull Position asPosition() {
++        return io.papermc.paper.math.Position.fine(this);
+     }
+     // Paper end
+ }

patches/api/0488-adapt-to-Position-change.patch

@@ -0,0 +1,33 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Thu, 21 Dec 2023 19:11:23 -0800
+Subject: [PATCH] adapt to Position change
+
+will be squashed into original patches
+
+diff --git a/src/main/java/org/bukkit/RegionAccessor.java b/src/main/java/org/bukkit/RegionAccessor.java
+index eb33e8e671972aa308ad75a7ce9aa9ac526f470f..292f40d4ab849f786d9034dd4d8e4f829e439f97 100644
+--- a/src/main/java/org/bukkit/RegionAccessor.java
++++ b/src/main/java/org/bukkit/RegionAccessor.java
+@@ -133,7 +133,7 @@ public interface RegionAccessor extends Keyed { // Paper
+      */
+     @NotNull
+     default io.papermc.paper.block.fluid.FluidData getFluidData(@NotNull Location location) {
+-        return getFluidData(location.blockX(), location.blockY(), location.blockZ());
++        return getFluidData(location.getBlockX(), location.getBlockY(), location.getBlockZ());
+     }
+     // Paper end
+ 
+diff --git a/src/main/java/org/bukkit/block/Sign.java b/src/main/java/org/bukkit/block/Sign.java
+index 340e3adcc57227f2e570826681ea81b9159805de..47d89b1fe4cc9cb2720d0a3572320e08e8ca5aba 100644
+--- a/src/main/java/org/bukkit/block/Sign.java
++++ b/src/main/java/org/bukkit/block/Sign.java
+@@ -214,7 +214,7 @@ public interface Sign extends TileState, Colorable {
+      * @return the side it is facing
+      */
+     default @NotNull Side getInteractableSideFor(org.bukkit.entity.@NotNull Entity entity) {
+-        return this.getInteractableSideFor(entity.getLocation());
++        return this.getInteractableSideFor(entity.getLocation().asPosition());
+     }
+ 
+     /**

patches/server/1057-Split-Position-from-Location-type-hierarchy.patch

@@ -0,0 +1,116 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Tue, 19 Dec 2023 23:40:01 -0800
+Subject: [PATCH] Split Position from Location type hierarchy
+
+
+diff --git a/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/bytecode/PaperClassloaderBytecodeModifier.java b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/bytecode/PaperClassloaderBytecodeModifier.java
+index d7a789af72e5a1ef5e42c7e855897b65fdeda805..f0383c6df4d8ce15f2e04bf589e0c9524e07befb 100644
+--- a/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/bytecode/PaperClassloaderBytecodeModifier.java
++++ b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/bytecode/PaperClassloaderBytecodeModifier.java
+@@ -3,6 +3,7 @@ package io.papermc.paper.plugin.entrypoint.classloader.bytecode;
+ import com.google.common.collect.Iterators;
+ import io.papermc.paper.plugin.configuration.PluginMeta;
+ import io.papermc.paper.plugin.entrypoint.classloader.ClassloaderBytecodeModifier;
++import io.papermc.paper.plugin.entrypoint.classloader.bytecode.versions.API_1_21_1;
+ import java.util.Iterator;
+ import java.util.LinkedHashMap;
+ import java.util.List;
+@@ -15,6 +16,7 @@ import org.objectweb.asm.Opcodes;
+ public class PaperClassloaderBytecodeModifier implements ClassloaderBytecodeModifier {
+ 
+     private static final Map<ApiVersion, List<ModifierFactory>> MODIFIERS = Util.make(new LinkedHashMap<>(), map -> {
++        map.put(API_1_21_1.API_VERSION, List.of(API_1_21_1::new));
+     });
+ 
+     private final Map<ApiVersion, List<VersionedClassloaderBytecodeModifier>> constructedModifiers = MODIFIERS.entrySet().stream()
+diff --git a/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/bytecode/versions/API_1_21_1.java b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/bytecode/versions/API_1_21_1.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..fc8e26c1b024f5bde160a91b23a6adc233fc947f
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/plugin/entrypoint/classloader/bytecode/versions/API_1_21_1.java
+@@ -0,0 +1,84 @@
++package io.papermc.paper.plugin.entrypoint.classloader.bytecode.versions;
++
++import io.papermc.asm.rules.RewriteRule;
++import io.papermc.asm.rules.builder.ConfiguredRuleFactory;
++import io.papermc.asm.rules.builder.matcher.method.targeted.TargetedMethodMatcher;
++import io.papermc.paper.event.world.StructuresLocateEvent;
++import io.papermc.paper.math.Position;
++import io.papermc.paper.plugin.entrypoint.classloader.bytecode.VersionedClassloaderBytecodeModifier;
++import java.lang.constant.ClassDesc;
++import java.lang.reflect.Method;
++import java.util.List;
++import java.util.Set;
++import org.bukkit.Bukkit;
++import org.bukkit.Location;
++import org.bukkit.RegionAccessor;
++import org.bukkit.Server;
++import org.bukkit.World;
++import org.bukkit.block.SculkCatalyst;
++import org.bukkit.block.Sign;
++import org.bukkit.boss.DragonBattle;
++import org.bukkit.craftbukkit.util.ApiVersion;
++import org.bukkit.entity.Player;
++import org.bukkit.generator.LimitedRegion;
++
++import static io.papermc.asm.rules.RewriteRule.chain;
++import static io.papermc.asm.util.DescriptorUtils.desc;
++
++public class API_1_21_1 extends VersionedClassloaderBytecodeModifier {
++
++    public static final ApiVersion API_VERSION = ApiVersion.getOrCreateVersion("1.21.1");
++
++    private static final ClassDesc POSITION = desc(Position.class);
++
++    private static final Method POSITION_FUZZY_HANDLER;
++
++    static {
++        try {
++            POSITION_FUZZY_HANDLER = API_1_21_1.class.getDeclaredMethod("toPos", Object.class);
++        } catch (final NoSuchMethodException throwable) {
++            throw new RuntimeException(throwable);
++        }
++    }
++
++    // for removing FinePosition from superclasses of Location
++    private static ConfiguredRuleFactory.Factory locationSplit(final String... methods) {
++        return rf -> rf.changeParamFuzzy(
++            Position.class,
++            POSITION_FUZZY_HANDLER,
++            TargetedMethodMatcher.builder()
++                .match(List.of(methods))
++                .targetParam(POSITION)
++                .build()
++        );
++    }
++
++    public API_1_21_1(final int api) {
++        super(api);
++    }
++
++    @Override
++    protected RewriteRule createRule() {
++        return chain(
++            this.createSplitRule()
++        );
++    }
++
++    private RewriteRule createSplitRule() {
++        // For all methods with Position parameters prior to the removal of Position from Location type hierarchy
++        return chain(
++            this.forOwnerClasses(Set.of(Bukkit.class, Server.class), locationSplit("isOwnedByCurrentRegion")),
++            this.forOwnerClasses(Set.of(RegionAccessor.class, World.class, LimitedRegion.class), locationSplit("getFluidData")),
++            this.forOwnerClass(World.class, locationSplit("hasStructureAt", "isPositionLoaded", "rayTraceEntities", "rayTraceBlocks", "rayTrace")),
++            this.forOwnerClass(SculkCatalyst.class, locationSplit("bloom")),
++            this.forOwnerClass(Sign.class, locationSplit("getInteractableSideFor")),
++            this.forOwnerClass(DragonBattle.class, locationSplit("spawnNewGateway")),
++            this.forOwnerClass(Player.class, locationSplit("lookAt")),
++            this.forOwnerClass(StructuresLocateEvent.Result.class, locationSplit("<init>"))
++        );
++    }
++
++    public static Position toPos(final Object object) { // for split rule
++        return object instanceof final Location loc ? loc.asPosition() : (Position) object;
++    }
++}

patches/server/1058-adapt-to-Position-change.patch

@@ -0,0 +1,68 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Thu, 21 Dec 2023 19:11:06 -0800
+Subject: [PATCH] adapt to Position change
+
+will be squashed into original patches
+
+diff --git a/src/main/java/io/papermc/paper/block/fluid/PaperFluidData.java b/src/main/java/io/papermc/paper/block/fluid/PaperFluidData.java
+index 479bc32241ebadf8bbc1080b601f61391ad37fa4..8830b6a8b10845a8bc4f751d7ec6d2987b0fa580 100644
+--- a/src/main/java/io/papermc/paper/block/fluid/PaperFluidData.java
++++ b/src/main/java/io/papermc/paper/block/fluid/PaperFluidData.java
+@@ -65,7 +65,7 @@ public class PaperFluidData implements FluidData {
+     @Override
+     public float computeHeight(@NotNull final Location location) {
+         Preconditions.checkArgument(location.getWorld() != null, "Cannot compute height on world-less location");
+-        return this.state.getHeight(((CraftWorld) location.getWorld()).getHandle(), MCUtil.toBlockPos(location));
++        return this.state.getHeight(((CraftWorld) location.getWorld()).getHandle(), MCUtil.toBlockPosition(location));
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+index ffd284f0e25c6f20672f7225aafd37e6c87ccf03..2cc1069e3657977f67ac356038b6fecafafd4c45 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+@@ -1175,7 +1175,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
+     @Override
+     public RayTraceResult rayTraceBlocks(Location start, Vector direction, double maxDistance, FluidCollisionMode fluidCollisionMode, boolean ignorePassableBlocks) {
+         // Paper start - Add predicate for blocks when raytracing
+-        return this.rayTraceBlocks(start, direction, maxDistance, fluidCollisionMode, ignorePassableBlocks, null);
++        return this.rayTraceBlocks(start.asPosition(), direction, maxDistance, fluidCollisionMode, ignorePassableBlocks, null);
+     }
+ 
+     @Override
+@@ -1206,7 +1206,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
+     @Override
+     public RayTraceResult rayTrace(Location start, Vector direction, double maxDistance, FluidCollisionMode fluidCollisionMode, boolean ignorePassableBlocks, double raySize, Predicate<? super Entity> filter) {
+         // Paper start - Add predicate for blocks when raytracing
+-        return this.rayTrace(start, direction, maxDistance, fluidCollisionMode, ignorePassableBlocks, raySize, filter, null);
++        return this.rayTrace(start.asPosition(), direction, maxDistance, fluidCollisionMode, ignorePassableBlocks, raySize, filter, null);
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java
+index 7b7b89e67d53ed70efae714192c5fa32977f3d9c..594fdeb10d384b0fbe967693b93e83c5c3847e09 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java
+@@ -87,7 +87,7 @@ public class CraftEnderDragon extends CraftMob implements EnderDragon, CraftEnem
+             this.getHandle().setPodium(null);
+         } else {
+             org.apache.commons.lang.Validate.isTrue(location.getWorld() == null || location.getWorld().equals(getWorld()), "You cannot set a podium in a different world to where the dragon is");
+-            this.getHandle().setPodium(io.papermc.paper.util.MCUtil.toBlockPos(location));
++            this.getHandle().setPodium(io.papermc.paper.util.MCUtil.toBlockPos(location.asPosition()));
+         }
+     }
+     // Paper end - Allow changing the EnderDragon podium
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index a0d5082590ee03060f0dbb4770d196efc316c328..17ca20d64fdc28db3ed7c74e5456e207fd7ae7c0 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -1352,7 +1352,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+         org.bukkit.util.Vector direction = targetLocation.getDirection();
+         direction.multiply(9999999); // We need to move the target block.. FAR out
+         targetLocation.add(direction);
+-        this.lookAt(targetLocation, io.papermc.paper.entity.LookAnchor.EYES);
++        this.lookAt(targetLocation.asPosition(), io.papermc.paper.entity.LookAnchor.EYES);
+         // Paper end
+     }
+ 

test-plugin/build.gradle.kts

@@ -1,7 +1,12 @@
 version = "1.0.0-SNAPSHOT"
 
+repositories {
+    maven("https://repo.papermc.io/repository/maven-public/")
+}
+
 dependencies {
-    compileOnly(project(":paper-api"))
+    compileOnly("io.papermc.paper:paper-api:1.21.1-R0.1-SNAPSHOT")
+    // compileOnly(project(":paper-api"))
 }
 
 tasks.processResources {

test-plugin/src/main/java/io/papermc/testplugin/TestPlugin.java

@@ -1,6 +1,13 @@
 package io.papermc.testplugin;
 
+import io.papermc.paper.event.player.ChatEvent;
+import io.papermc.paper.event.world.StructuresLocateEvent;
+import java.util.function.BiFunction;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
+import org.bukkit.generator.structure.Structure;
 import org.bukkit.plugin.java.JavaPlugin;
 
 public final class TestPlugin extends JavaPlugin implements Listener {
@@ -10,6 +17,20 @@ public final class TestPlugin extends JavaPlugin implements Listener {
         this.getServer().getPluginManager().registerEvents(this, this);
 
         // io.papermc.testplugin.brigtests.Registration.registerViaOnEnable(this);
+        this.test(new Location(null, 0, 0, 0));
+    }
+
+    @EventHandler
+    public void onChat(ChatEvent event) {
+        this.test(event.getPlayer().getLocation());
+    }
+
+    private void test(Location loc) {
+        final BiFunction<Location, Structure, StructuresLocateEvent.Result> biFunction = StructuresLocateEvent.Result::new;
+        final StructuresLocateEvent.Result resultByConstructor = new StructuresLocateEvent.Result(loc, Structure.FORTRESS);
+        System.out.println(resultByConstructor.position());
+        final StructuresLocateEvent.Result result = biFunction.apply(loc, Structure.FORTRESS);
+        System.out.println(result.position());
     }
 
 }