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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: TwoLeggedCat <80929284+TwoLeggedCat@users.noreply.github.com>
Date: Sat, 29 May 2021 14:33:25 -0500
Subject: [PATCH] Line Of Sight Changes
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 75ed2ed9fa3e620e48216840bafd9bcfe7123901..3541d5f4a0605415e1d7941fdf82e1ba3e5e2965 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -3714,7 +3714,8 @@ public abstract class LivingEntity extends Entity implements Attackable {
Vec3 vec3d = new Vec3(this.getX(), this.getEyeY(), this.getZ());
Vec3 vec3d1 = new Vec3(entity.getX(), entity.getEyeY(), entity.getZ());
- return vec3d1.distanceTo(vec3d) > 128.0D ? false : this.level().clip(new ClipContext(vec3d, vec3d1, ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, this)).getType() == HitResult.Type.MISS;
+ // Paper - diff on change - used in CraftLivingEntity#hasLineOfSight(Location) and CraftWorld#lineOfSightExists
+ return vec3d1.distanceToSqr(vec3d) > 128.0D * 128.0D ? false : this.level().clip(new ClipContext(vec3d, vec3d1, ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, this)).getType() == HitResult.Type.MISS; // Paper - Perf: Use distance squared
}
}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
index 1e720b96f0367652db6924b8654deaa9467e3d2c..4932ba59a6b70b405f7dd05358f6bb00b629d34c 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
@@ -516,5 +516,21 @@ public abstract class CraftRegionAccessor implements RegionAccessor {
public org.bukkit.NamespacedKey getKey() {
return org.bukkit.craftbukkit.util.CraftNamespacedKey.fromMinecraft(this.getHandle().getLevel().dimension().location());
}
+
+ public boolean lineOfSightExists(Location from, Location to) {
+ Preconditions.checkArgument(from != null, "from parameter in lineOfSightExists cannot be null");
+ Preconditions.checkArgument(to != null, "to parameter in lineOfSightExists cannot be null");
+ if (from.getWorld() != to.getWorld()) {
+ return false;
+ }
+
+ net.minecraft.world.phys.Vec3 start = new net.minecraft.world.phys.Vec3(from.getX(), from.getY(), from.getZ());
+ net.minecraft.world.phys.Vec3 end = new net.minecraft.world.phys.Vec3(to.getX(), to.getY(), to.getZ());
+ if (end.distanceToSqr(start) > 128D * 128D) {
+ return false; // Return early if the distance is greater than 128 blocks
+ }
+
+ return this.getHandle().clip(new net.minecraft.world.level.ClipContext(start, end, net.minecraft.world.level.ClipContext.Block.COLLIDER, net.minecraft.world.level.ClipContext.Fluid.NONE, net.minecraft.world.phys.shapes.CollisionContext.empty())).getType() == net.minecraft.world.phys.HitResult.Type.MISS;
+ }
// Paper end
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
index 2701e53086f4be07c341cd1e4fcd7a351e77c486..1cfc3d18fb785410f5acfcf3c338776858efe25a 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
@@ -627,6 +627,23 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
return this.getHandle().hasLineOfSight(((CraftEntity) other).getHandle());
}
+ // Paper start
+ @Override
+ public boolean hasLineOfSight(Location loc) {
+ if (this.getHandle().level() != ((CraftWorld) loc.getWorld()).getHandle()) {
+ return false;
+ }
+
+ net.minecraft.world.phys.Vec3 start = new net.minecraft.world.phys.Vec3(this.getHandle().getX(), this.getHandle().getEyeY(), this.getHandle().getZ());
+ net.minecraft.world.phys.Vec3 end = new net.minecraft.world.phys.Vec3(loc.getX(), loc.getY(), loc.getZ());
+ if (end.distanceToSqr(start) > 128D * 128D) {
+ return false; // Return early if the distance is greater than 128 blocks
+ }
+
+ return this.getHandle().level().clipDirect(start, end, net.minecraft.world.phys.shapes.CollisionContext.of(this.getHandle())) == net.minecraft.world.phys.HitResult.Type.MISS;
+ }
+ // Paper end
+
@Override
public boolean getRemoveWhenFarAway() {
return this.getHandle() instanceof Mob && !((Mob) this.getHandle()).isPersistenceRequired();
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