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PaperMC/patches/server/More-Projectile-API.patch
SamB440 e343c4eb44 Add projectile hit simulation API (#8816) 
This adds API to force a projectile to hit a provided entity. Example usage could be if you have a player disguised as another entity, you could simulate an arrow colliding with the (fake) entity hitbox.
2023-02-11 15:41:06 +00:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Tue, 22 Jun 2021 23:41:11 -0400
Subject: [PATCH] More Projectile API
== AT ==
public net.minecraft.world.entity.projectile.FishingHook timeUntilLured
public net.minecraft.world.entity.projectile.ShulkerBullet targetDeltaX
public net.minecraft.world.entity.projectile.ShulkerBullet targetDeltaY
public net.minecraft.world.entity.projectile.ShulkerBullet targetDeltaZ
public net.minecraft.world.entity.projectile.ShulkerBullet currentMoveDirection
public net.minecraft.world.entity.projectile.ShulkerBullet flightSteps
public net.minecraft.world.entity.projectile.AbstractArrow soundEvent
public net.minecraft.world.entity.projectile.ThrownTrident dealtDamage
public net.minecraft.world.entity.projectile.Projectile hasBeenShot
public net.minecraft.world.entity.projectile.Projectile leftOwner
public net.minecraft.world.entity.projectile.Projectile preOnHit(Lnet/minecraft/world/phys/HitResult;)V
public net.minecraft.world.entity.projectile.Projectile canHitEntity(Lnet/minecraft/world/entity/Entity;)Z
Co-authored-by: Nassim Jahnke <nassim@njahnke.dev>
diff --git a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
@@ -0,0 +0,0 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
@Override
protected void onHit(HitResult hitResult) {
super.onHit(hitResult);
+ // Paper start - More projectile API
+ this.splash(hitResult);
+ }
+ public void splash(@org.jetbrains.annotations.Nullable HitResult hitResult) {
+ // Paper end - More projectile API
if (!this.level.isClientSide) {
ItemStack itemstack = this.getItem();
Potion potionregistry = PotionUtils.getPotion(itemstack);
@@ -0,0 +0,0 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
if (this.isLingering()) {
showParticles = this.makeAreaOfEffectCloud(itemstack, potionregistry); // Paper
} else {
- showParticles = this.applySplash(list, hitResult.getType() == HitResult.Type.ENTITY ? ((EntityHitResult) hitResult).getEntity() : null); // Paper
+ showParticles = this.applySplash(list, hitResult != null && hitResult.getType() == HitResult.Type.ENTITY ? ((EntityHitResult) hitResult).getEntity() : null); // Paper - nullable hitResult
}
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java b/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/AbstractProjectile.java
@@ -0,0 +0,0 @@ public abstract class AbstractProjectile extends CraftEntity implements Projecti
public void setBounce(boolean doesBounce) {
this.doesBounce = doesBounce;
}
+ // Paper start
+ @Override
+ public boolean hasLeftShooter() {
+ return this.getHandle().leftOwner;
+ }
+
+ @Override
+ public void setHasLeftShooter(boolean leftShooter) {
+ this.getHandle().leftOwner = leftShooter;
+ }
+
+ @Override
+ public boolean hasBeenShot() {
+ return this.getHandle().hasBeenShot;
+ }
+
+ @Override
+ public void setHasBeenShot(boolean beenShot) {
+ this.getHandle().hasBeenShot = beenShot;
+ }
+
+ @Override
+ public boolean canHitEntity(org.bukkit.entity.Entity entity) {
+ return this.getHandle().canHitEntity(((CraftEntity) entity).getHandle());
+ }
+
+ @Override
+ public void hitEntity(org.bukkit.entity.Entity entity) {
+ this.getHandle().preOnHit(new net.minecraft.world.phys.EntityHitResult(((CraftEntity) entity).getHandle()));
+ }
+
+ @Override
+ public void hitEntity(org.bukkit.entity.Entity entity, org.bukkit.util.Vector vector) {
+ this.getHandle().preOnHit(new net.minecraft.world.phys.EntityHitResult(((CraftEntity) entity).getHandle(), new net.minecraft.world.phys.Vec3(vector.getX(), vector.getY(), vector.getZ())));
+ }
+
+ @Override
+ public net.minecraft.world.entity.projectile.Projectile getHandle() {
+ return (net.minecraft.world.entity.projectile.Projectile) entity;
+ }
+ // Paper end
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftArrow.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftArrow.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftArrow.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftArrow.java
@@ -0,0 +0,0 @@ public class CraftArrow extends AbstractProjectile implements AbstractArrow {
return org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(getHandle().getPickupItem());
}
+ @Override
+ public void setLifetimeTicks(int ticks) {
+ this.getHandle().life = ticks;
+ }
+
+ @Override
+ public int getLifetimeTicks() {
+ return this.getHandle().life;
+ }
+
+ @org.jetbrains.annotations.NotNull
+ @Override
+ public org.bukkit.Sound getHitSound() {
+ return org.bukkit.craftbukkit.CraftSound.getBukkit(this.getHandle().soundEvent);
+ }
+
+ @Override
+ public void setHitSound(@org.jetbrains.annotations.NotNull org.bukkit.Sound sound) {
+ this.getHandle().setSoundEvent(org.bukkit.craftbukkit.CraftSound.getSoundEffect(sound));
+ }
+
@Override
public void setNoPhysics(boolean noPhysics) {
this.getHandle().setNoPhysics(noPhysics);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
@@ -0,0 +0,0 @@ import org.bukkit.inventory.meta.FireworkMeta;
public class CraftFirework extends CraftProjectile implements Firework {
private final Random random = new Random();
- private final CraftItemStack item;
+ //private CraftItemStack item; // Paper - Remove usage, not accurate representation of current item.
public CraftFirework(CraftServer server, FireworkRocketEntity entity) {
super(server, entity);
- ItemStack item = this.getHandle().getEntityData().get(FireworkRocketEntity.DATA_ID_FIREWORKS_ITEM);
-
- if (item.isEmpty()) {
- item = new ItemStack(Items.FIREWORK_ROCKET);
- this.getHandle().getEntityData().set(FireworkRocketEntity.DATA_ID_FIREWORKS_ITEM, item);
- }
-
- this.item = CraftItemStack.asCraftMirror(item);
-
- // Ensure the item is a firework...
- if (this.item.getType() != Material.FIREWORK_ROCKET) {
- this.item.setType(Material.FIREWORK_ROCKET);
- }
+// Paper Start - Expose firework item directly
+// ItemStack item = this.getHandle().getEntityData().get(FireworkRocketEntity.DATA_ID_FIREWORKS_ITEM);
+//
+// if (item.isEmpty()) {
+// item = new ItemStack(Items.FIREWORK_ROCKET);
+// this.getHandle().getEntityData().set(FireworkRocketEntity.DATA_ID_FIREWORKS_ITEM, item);
+// }
+//
+// this.item = CraftItemStack.asCraftMirror(item);
+//
+// // Ensure the item is a firework...
+// if (this.item.getType() != Material.FIREWORK_ROCKET) {
+// this.item.setType(Material.FIREWORK_ROCKET);
+// }
+ // Paper End - Expose firework item directly
}
@Override
@@ -0,0 +0,0 @@ public class CraftFirework extends CraftProjectile implements Firework {
@Override
public FireworkMeta getFireworkMeta() {
- return (FireworkMeta) this.item.getItemMeta();
+ return (FireworkMeta) CraftItemStack.getItemMeta(this.getHandle().getEntityData().get(FireworkRocketEntity.DATA_ID_FIREWORKS_ITEM), Material.FIREWORK_ROCKET); // Paper - Expose firework item directly
}
@Override
public void setFireworkMeta(FireworkMeta meta) {
- this.item.setItemMeta(meta);
+ applyFireworkEffect(meta); // Paper - Expose firework item directly
// Copied from EntityFireworks constructor, update firework lifetime/power
this.getHandle().lifetime = 10 * (1 + meta.getPower()) + this.random.nextInt(6) + this.random.nextInt(7);
@@ -0,0 +0,0 @@ public class CraftFirework extends CraftProjectile implements Firework {
return getHandle().spawningEntity;
}
// Paper end
+ // Paper start - Expose firework item directly + manually setting flight
+ @Override
+ public org.bukkit.inventory.ItemStack getItem() {
+ return CraftItemStack.asBukkitCopy(this.getHandle().getItem());
+ }
+
+ @Override
+ public void setItem(org.bukkit.inventory.ItemStack itemStack) {
+ FireworkMeta meta = getFireworkMeta();
+ ItemStack nmsItem = itemStack == null ? ItemStack.EMPTY : CraftItemStack.asNMSCopy(itemStack);
+ this.getHandle().getEntityData().set(FireworkRocketEntity.DATA_ID_FIREWORKS_ITEM, nmsItem);
+
+ applyFireworkEffect(meta);
+ }
+
+ @Override
+ public int getTicksFlown() {
+ return this.getHandle().life;
+ }
+
+ @Override
+ public void setTicksFlown(int ticks) {
+ this.getHandle().life = ticks;
+ }
+
+ @Override
+ public int getTicksToDetonate() {
+ return this.getHandle().lifetime;
+ }
+
+ @Override
+ public void setTicksToDetonate(int ticks) {
+ this.getHandle().lifetime = ticks;
+ }
+
+ void applyFireworkEffect(FireworkMeta meta) {
+ ItemStack item = this.getHandle().getItem();
+ CraftItemStack.applyMetaToItem(item, meta);
+
+ this.getHandle().getEntityData().set(FireworkRocketEntity.DATA_ID_FIREWORKS_ITEM, item);
+ }
+ // Paper end - Expose firework item directly + manually setting flight
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftFishHook.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftFishHook.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftFishHook.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftFishHook.java
@@ -0,0 +0,0 @@ public class CraftFishHook extends CraftProjectile implements FishHook {
public HookState getState() {
return HookState.values()[this.getHandle().currentState.ordinal()];
}
+ // Paper start - More FishHook API
+ @Override
+ public int getWaitTime() {
+ return this.getHandle().timeUntilLured;
+ }
+
+ @Override
+ public void setWaitTime(int ticks) {
+ this.getHandle().timeUntilLured = ticks;
+ }
+ // Paper end
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftShulkerBullet.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftShulkerBullet.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftShulkerBullet.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftShulkerBullet.java
@@ -0,0 +0,0 @@ public class CraftShulkerBullet extends AbstractProjectile implements ShulkerBul
this.getHandle().setTarget(target == null ? null : ((CraftEntity) target).getHandle());
}
+ @Override
+ public org.bukkit.util.Vector getTargetDelta() {
+ net.minecraft.world.entity.projectile.ShulkerBullet bullet = this.getHandle();
+ return new org.bukkit.util.Vector(bullet.targetDeltaX, bullet.targetDeltaY, bullet.targetDeltaZ);
+ }
+
+ @Override
+ public void setTargetDelta(org.bukkit.util.Vector vector) {
+ net.minecraft.world.entity.projectile.ShulkerBullet bullet = this.getHandle();
+ bullet.targetDeltaX = vector.getX();
+ bullet.targetDeltaY = vector.getY();
+ bullet.targetDeltaZ = vector.getZ();
+ }
+
+ @Override
+ public org.bukkit.block.BlockFace getCurrentMovementDirection() {
+ return org.bukkit.craftbukkit.block.CraftBlock.notchToBlockFace(this.getHandle().currentMoveDirection);
+ }
+
+ @Override
+ public void setCurrentMovementDirection(org.bukkit.block.BlockFace movementDirection) {
+ this.getHandle().currentMoveDirection = org.bukkit.craftbukkit.block.CraftBlock.blockFaceToNotch(movementDirection);
+ }
+
+ @Override
+ public int getFlightSteps() {
+ return this.getHandle().flightSteps;
+ }
+
+ @Override
+ public void setFlightSteps(int steps) {
+ this.getHandle().flightSteps = steps;
+ }
+
@Override
public String toString() {
return "CraftShulkerBullet";
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftThrownPotion.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftThrownPotion.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftThrownPotion.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftThrownPotion.java
@@ -0,0 +0,0 @@ public class CraftThrownPotion extends CraftThrowableProjectile implements Throw
Validate.notNull(item, "ItemStack cannot be null.");
// The ItemStack must be a potion.
- Validate.isTrue(item.getType() == Material.LINGERING_POTION || item.getType() == Material.SPLASH_POTION, "ItemStack must be a lingering or splash potion. This item stack was " + item.getType() + ".");
+ //Validate.isTrue(item.getType() == Material.LINGERING_POTION || item.getType() == Material.SPLASH_POTION, "ItemStack must be a lingering or splash potion. This item stack was " + item.getType() + "."); // Paper - Projectile API
+ org.bukkit.inventory.meta.PotionMeta meta = (item.getType() == Material.LINGERING_POTION || item.getType() == Material.SPLASH_POTION) ? null : this.getPotionMeta(); // Paper - Projectile API
this.getHandle().setItem(CraftItemStack.asNMSCopy(item));
+ if (meta != null) this.setPotionMeta(meta); // Paper - Projectile API
}
+ // Paper start - Projectile API
+ @Override
+ public org.bukkit.inventory.meta.PotionMeta getPotionMeta() {
+ return (org.bukkit.inventory.meta.PotionMeta) CraftItemStack.getItemMeta(this.getHandle().getItemRaw(), Material.SPLASH_POTION);
+ }
+
+ @Override
+ public void setPotionMeta(org.bukkit.inventory.meta.PotionMeta meta) {
+ net.minecraft.world.item.ItemStack item = this.getHandle().getItem();
+ CraftItemStack.applyMetaToItem(item, meta);
+ this.getHandle().setItem(item); // Reset item
+ }
+
+ @Override
+ public void splash() {
+ this.getHandle().splash(null);
+ }
+ // Paper end
@Override
public net.minecraft.world.entity.projectile.ThrownPotion getHandle() {
return (net.minecraft.world.entity.projectile.ThrownPotion) entity;
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftTrident.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftTrident.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftTrident.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftTrident.java
@@ -0,0 +0,0 @@ public class CraftTrident extends CraftArrow implements Trident {
com.google.common.base.Preconditions.checkArgument(loyaltyLevel >= 0 && loyaltyLevel <= 127, "The loyalty level has to be between 0 and 127");
this.getHandle().setLoyalty((byte) loyaltyLevel);
}
+
+ @Override
+ public boolean hasDealtDamage() {
+ return this.getHandle().dealtDamage;
+ }
+
+ @Override
+ public void setHasDealtDamage(boolean hasDealtDamage) {
+ this.getHandle().dealtDamage = hasDealtDamage;
+ }
// Paper end
}
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
@@ -0,0 +0,0 @@ public final class CraftItemStack extends ItemStack {
public ItemMeta getItemMeta() {
return CraftItemStack.getItemMeta(this.handle);
}
+ // Paper start
+ public static void applyMetaToItem(net.minecraft.world.item.ItemStack itemStack, ItemMeta meta) {
+ ((org.bukkit.craftbukkit.inventory.CraftMetaItem) meta).applyToItem(itemStack.getOrCreateTag());
+ }
public static ItemMeta getItemMeta(net.minecraft.world.item.ItemStack item) {
+ return getItemMeta(item, CraftItemStack.getType(item));
+ }
+ public static ItemMeta getItemMeta(net.minecraft.world.item.ItemStack item, Material material) {
+ // Paper end
if (!CraftItemStack.hasItemMeta(item)) {
- return CraftItemFactory.instance().getItemMeta(CraftItemStack.getType(item));
+ return CraftItemFactory.instance().getItemMeta(material); // Paper
}
- switch (CraftItemStack.getType(item)) {
+ switch (material) { // Paper
case WRITTEN_BOOK:
return new CraftMetaBookSigned(item.getTag());
case WRITABLE_BOOK:
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