From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MelnCat <melncatuwu@gmail.com>
Date: Sat, 1 Oct 2022 18:06:52 -0700
Subject: [PATCH] Configurable block fall damage modifiers


diff --git a/src/main/java/net/minecraft/world/level/block/BedBlock.java b/src/main/java/net/minecraft/world/level/block/BedBlock.java
index e8405a57fb88e63b63baaf00645c417633bdc0f2..2b66ddafaaca17f64d1e7502dfa4d7576e3e032f 100644
--- a/src/main/java/net/minecraft/world/level/block/BedBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/BedBlock.java
@@ -173,7 +173,7 @@ public class BedBlock extends HorizontalDirectionalBlock implements EntityBlock
 
     @Override
     public void fallOn(Level world, BlockState state, BlockPos pos, Entity entity, float fallDistance) {
-        super.fallOn(world, state, pos, entity, fallDistance * 0.5F);
+        super.fallOn(world, state, pos, entity, fallDistance); // Purpur
     }
 
     @Override
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 2feca2820d1760defe0ef784f9737ab9e9ec800f..3a935e4a16f1c71579d7021d3ad06d1f9b76e033 100644
--- a/src/main/java/net/minecraft/world/level/block/Block.java
+++ b/src/main/java/net/minecraft/world/level/block/Block.java
@@ -94,6 +94,10 @@ public class Block extends BlockBehaviour implements ItemLike {
     public static final int UPDATE_LIMIT = 512;
     protected final StateDefinition<Block, BlockState> stateDefinition;
     private BlockState defaultBlockState;
+    // Purpur start
+    public float fallDamageMultiplier = 1.0F;
+    public float fallDistanceMultiplier = 1.0F;
+    // Purpur end
     // Paper start
     public final boolean isDestroyable() {
         return io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.allowPermanentBlockBreakExploits ||
@@ -498,7 +502,7 @@ public class Block extends BlockBehaviour implements ItemLike {
     }
 
     public void fallOn(Level world, BlockState state, BlockPos pos, Entity entity, float fallDistance) {
-        entity.causeFallDamage(fallDistance, 1.0F, entity.damageSources().fall());
+        entity.causeFallDamage(fallDistance * fallDistanceMultiplier, fallDamageMultiplier, entity.damageSources().fall()); // Purpur
     }
 
     public void updateEntityAfterFallOn(BlockGetter world, Entity entity) {
diff --git a/src/main/java/net/minecraft/world/level/block/HayBlock.java b/src/main/java/net/minecraft/world/level/block/HayBlock.java
index cfbe1dae76db76cf54a4f5d72aca72d5e893859e..74cb10230d459ac9f300a9d59af504d233ac663e 100644
--- a/src/main/java/net/minecraft/world/level/block/HayBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/HayBlock.java
@@ -15,6 +15,6 @@ public class HayBlock extends RotatedPillarBlock {
 
     @Override
     public void fallOn(Level world, BlockState state, BlockPos pos, Entity entity, float fallDistance) {
-        entity.causeFallDamage(fallDistance, 0.2F, world.damageSources().fall());
+        super.fallOn(world, state, pos, entity, fallDistance); // Purpur
     }
 }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index a3ffc1b8bd8f471c088d1d8256d67a6e2048b065..ac85d0b2a836d44ebadd50b3c80de95a85ff7f61 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -572,4 +572,50 @@ public class PurpurConfig {
             block.explosionResistance = blastResistance.floatValue();
         });
     }
+    private static void blockFallMultiplierSettings() {
+        getMap("settings.block-fall-multipliers", Map.ofEntries(
+                Map.entry("minecraft:hay_block", Map.of("damage", 0.2F)),
+                Map.entry("minecraft:white_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:light_gray_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:gray_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:black_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:brown_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:pink_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:red_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:orange_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:yellow_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:green_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:lime_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:cyan_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:light_blue_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:blue_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:purple_bed", Map.of("distance", 0.5F)),
+                Map.entry("minecraft:magenta_bed", Map.of("distance", 0.5F))
+        )).forEach((blockId, value) -> {
+            Block block = BuiltInRegistries.BLOCK.get(new ResourceLocation(blockId));
+            if (block == Blocks.AIR) {
+                log(Level.SEVERE, "Invalid block for `settings.block-fall-multipliers`: " + blockId);
+                return;
+            }
+            if (!(value instanceof Map<?, ?> map)) {
+                log(Level.SEVERE, "Invalid fall multiplier for `settings.block-fall-multipliers." + blockId + "`: " + value
+                        + ", expected a map with keys `damage` and `distance` to floats.");
+                return;
+            }
+            Object rawFallDamageMultiplier = map.get("damage");
+            if (rawFallDamageMultiplier == null) rawFallDamageMultiplier = 1F;
+            if (!(rawFallDamageMultiplier instanceof Number fallDamageMultiplier)) {
+                log(Level.SEVERE, "Invalid multiplier for `settings.block-fall-multipliers." + blockId + ".damage`: " + map.get("damage"));
+                return;
+            }
+            Object rawFallDistanceMultiplier = map.get("distance");
+            if (rawFallDistanceMultiplier == null) rawFallDistanceMultiplier = 1F;
+            if (!(rawFallDistanceMultiplier instanceof Number fallDistanceMultiplier)) {
+                log(Level.SEVERE, "Invalid multiplier for `settings.block-fall-multipliers." + blockId + ".distance`: " + map.get("distance"));
+                return;
+            }
+            block.fallDamageMultiplier = fallDamageMultiplier.floatValue();
+            block.fallDistanceMultiplier = fallDistanceMultiplier.floatValue();
+        });
+    }
 }