Paper/patches/server/0677-Fix-block-drops-position-losing-precision-millions-o.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Thu, 12 Aug 2021 21:15:38 -0700
Subject: [PATCH] Fix block drops position losing precision millions of blocks
 out


diff --git a/src/main/java/net/minecraft/world/level/block/Block.java b/src/main/java/net/minecraft/world/level/block/Block.java
index a9171ca47e836428e1b5c8366898a94702242e13..f595e64d6f9509c04ed6dac00205136c17c67edd 100644
--- a/src/main/java/net/minecraft/world/level/block/Block.java
+++ b/src/main/java/net/minecraft/world/level/block/Block.java
@@ -344,9 +344,11 @@ public class Block extends BlockBehaviour implements ItemLike {
 
     public static void popResource(Level world, BlockPos pos, ItemStack stack) {
         float f = EntityType.ITEM.getHeight() / 2.0F;
-        double d0 = (double) ((float) pos.getX() + 0.5F) + Mth.nextDouble(world.random, -0.25D, 0.25D);
-        double d1 = (double) ((float) pos.getY() + 0.5F) + Mth.nextDouble(world.random, -0.25D, 0.25D) - (double) f;
-        double d2 = (double) ((float) pos.getZ() + 0.5F) + Mth.nextDouble(world.random, -0.25D, 0.25D);
+        // Paper start - don't convert potentially massive numbers to floats
+        double d0 = pos.getX() + 0.5D + Mth.nextDouble(world.random, -0.25D, 0.25D);
+        double d1 = pos.getY() + 0.5D + Mth.nextDouble(world.random, -0.25D, 0.25D) - (double) f;
+        double d2 = pos.getZ() + 0.5D + Mth.nextDouble(world.random, -0.25D, 0.25D);
+        // Paper end
 
         Block.popResource(world, () -> {
             return new ItemEntity(world, d0, d1, d2, stack);
@@ -359,9 +361,11 @@ public class Block extends BlockBehaviour implements ItemLike {
         int k = direction.getStepZ();
         float f = EntityType.ITEM.getWidth() / 2.0F;
         float f1 = EntityType.ITEM.getHeight() / 2.0F;
-        double d0 = (double) ((float) pos.getX() + 0.5F) + (i == 0 ? Mth.nextDouble(world.random, -0.25D, 0.25D) : (double) ((float) i * (0.5F + f)));
-        double d1 = (double) ((float) pos.getY() + 0.5F) + (j == 0 ? Mth.nextDouble(world.random, -0.25D, 0.25D) : (double) ((float) j * (0.5F + f1))) - (double) f1;
-        double d2 = (double) ((float) pos.getZ() + 0.5F) + (k == 0 ? Mth.nextDouble(world.random, -0.25D, 0.25D) : (double) ((float) k * (0.5F + f)));
+        // Paper start - don't convert potentially massive numbers to floats
+        double d0 = pos.getX() + 0.5D + (i == 0 ? Mth.nextDouble(world.random, -0.25D, 0.25D) : (double) ((float) i * (0.5F + f)));
+        double d1 = pos.getY() + 0.5D + (j == 0 ? Mth.nextDouble(world.random, -0.25D, 0.25D) : (double) ((float) j * (0.5F + f1))) - (double) f1;
+        double d2 = pos.getZ() + 0.5D + (k == 0 ? Mth.nextDouble(world.random, -0.25D, 0.25D) : (double) ((float) k * (0.5F + f)));
+        // Paper end
         double d3 = i == 0 ? Mth.nextDouble(world.random, -0.1D, 0.1D) : (double) i * 0.1D;
         double d4 = j == 0 ? Mth.nextDouble(world.random, 0.0D, 0.1D) : (double) j * 0.1D + 0.1D;
         double d5 = k == 0 ? Mth.nextDouble(world.random, -0.1D, 0.1D) : (double) k * 0.1D;