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Paper/Spigot-Server-Patches/0033-Add-player-view-distance-API.patch
Aikar 5b6dfb3463
NOT FINISHED!!! Current Progress on 1.13-pre7 update 
This work is 100% unfinished. I am pushing it up so that we as a team
can work on this update.

Do not try to use this branch. You will fail.
2018-07-16 00:13:29 -04:00

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From 9ef5da712e0601ac690b564f05fc90837caff795 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Wed, 2 Mar 2016 14:35:27 -0600
Subject: [PATCH] Add player view distance API
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index cb44bf3a7..0531812fb 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -72,6 +72,15 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
public boolean f;
public int ping;
public boolean viewingCredits;
+ // Paper start - Player view distance API
+ private int viewDistance = -1;
+ public int getViewDistance() {
+ return viewDistance == -1 ? ((WorldServer) world).getPlayerChunkMap().getViewDistance() : viewDistance;
+ }
+ public void setViewDistance(int viewDistance) {
+ this.viewDistance = viewDistance;
+ }
+ // Paper end
// CraftBukkit start
public String displayName;
diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index d975c2ccf..6ece565c5 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -35,7 +35,7 @@ public class PlayerChunkMap {
private final List<PlayerChunk> g = Lists.newLinkedList();
private final List<PlayerChunk> h = Lists.newLinkedList();
private final List<PlayerChunk> i = Lists.newArrayList();
- private int j;
+ private int j;public int getViewDistance() { return j; } // Paper OBFHELPER
private long k;
private boolean l = true;
private boolean m = true;
@@ -265,8 +265,11 @@ public class PlayerChunkMap {
// CraftBukkit start - Load nearby chunks first
List<ChunkCoordIntPair> chunkList = new LinkedList<ChunkCoordIntPair>();
- for (int k = i - this.j; k <= i + this.j; ++k) {
- for (int l = j - this.j; l <= j + this.j; ++l) {
+ // Paper start - Player view distance API
+ int viewDistance = entityplayer.getViewDistance();
+ for (int k = i - viewDistance; k <= i + viewDistance; ++k) {
+ for (int l = j - viewDistance; l <= j + viewDistance; ++l) {
+ // Paper end
chunkList.add(new ChunkCoordIntPair(k, l));
}
}
@@ -285,8 +288,11 @@ public class PlayerChunkMap {
int i = (int) entityplayer.d >> 4;
int j = (int) entityplayer.e >> 4;
- for (int k = i - this.j; k <= i + this.j; ++k) {
- for (int l = j - this.j; l <= j + this.j; ++l) {
+ // Paper start - Player view distance API
+ int viewDistance = entityplayer.getViewDistance();
+ for (int k = i - viewDistance; k <= i + viewDistance; ++k) {
+ for (int l = j - viewDistance; l <= j + viewDistance; ++l) {
+ // Paper end
PlayerChunk playerchunk = this.getChunk(k, l);
if (playerchunk != null) {
@@ -316,7 +322,9 @@ public class PlayerChunkMap {
if (d2 >= 64.0D) {
int k = (int) entityplayer.d >> 4;
int l = (int) entityplayer.e >> 4;
- int i1 = this.j;
+ final int viewDistance = entityplayer.getViewDistance(); // Paper - Player view distance API
+ int i1 = Math.max(getViewDistance(), viewDistance); // Paper - Player view distance API
+
int j1 = i - k;
int k1 = j - l;
@@ -325,7 +333,7 @@ public class PlayerChunkMap {
if (j1 != 0 || k1 != 0) {
for (int l1 = i - i1; l1 <= i + i1; ++l1) {
for (int i2 = j - i1; i2 <= j + i1; ++i2) {
- if (!this.a(l1, i2, k, l, i1)) {
+ if (!this.a(l1, i2, k, l, viewDistance)) { // Paper - Player view distance API
// this.c(l1, i2).a(entityplayer);
chunksToLoad.add(new ChunkCoordIntPair(l1, i2)); // CraftBukkit
}
@@ -360,6 +368,8 @@ public class PlayerChunkMap {
return playerchunk != null && playerchunk.d(entityplayer) && playerchunk.e();
}
+ public final void setViewDistanceForAll(int viewDistance) { this.a(viewDistance); } // Paper - OBFHELPER
+ // Paper start - Separate into two methods
public void a(int i) {
i = MathHelper.clamp(i, 3, 32);
if (i != this.j) {
@@ -369,36 +379,55 @@ public class PlayerChunkMap {
while (iterator.hasNext()) {
EntityPlayer entityplayer = (EntityPlayer) iterator.next();
- int k = (int) entityplayer.locX >> 4;
- int l = (int) entityplayer.locZ >> 4;
- int i1;
- int j1;
-
- if (j > 0) {
- for (i1 = k - i; i1 <= k + i; ++i1) {
- for (j1 = l - i; j1 <= l + i; ++j1) {
- PlayerChunk playerchunk = this.c(i1, j1);
-
- if (!playerchunk.d(entityplayer)) {
- playerchunk.a(entityplayer);
- }
+ this.setViewDistance(entityplayer, i, false); // Paper - Split, don't mark sort pending, we'll handle it after
+ }
+
+ this.j = i;
+ this.e();
+ }
+ }
+
+ public void setViewDistance(EntityPlayer entityplayer, int i) {
+ this.setViewDistance(entityplayer, i, true); // Mark sort pending by default so we don't have to remember to do so all the time
+ }
+
+ // Copied from above with minor changes
+ public void setViewDistance(EntityPlayer entityplayer, int i, boolean markSort) {
+ i = MathHelper.clamp(i, 3, 32);
+ int oldViewDistance = entityplayer.getViewDistance();
+ if (i != oldViewDistance) {
+ int j = i - oldViewDistance;
+
+ int k = (int) entityplayer.locX >> 4;
+ int l = (int) entityplayer.locZ >> 4;
+ int i1;
+ int j1;
+
+ if (j > 0) {
+ for (i1 = k - i; i1 <= k + i; ++i1) {
+ for (j1 = l - i; j1 <= l + i; ++j1) {
+ PlayerChunk playerchunk = this.c(i1, j1);
+
+ if (!playerchunk.d(entityplayer)) {
+ playerchunk.a(entityplayer);
}
}
- } else {
- for (i1 = k - this.j; i1 <= k + this.j; ++i1) {
- for (j1 = l - this.j; j1 <= l + this.j; ++j1) {
- if (!this.a(i1, j1, k, l, i)) {
- this.c(i1, j1).b(entityplayer);
- }
+ }
+ } else {
+ for (i1 = k - oldViewDistance; i1 <= k + oldViewDistance; ++i1) {
+ for (j1 = l - oldViewDistance; j1 <= l + oldViewDistance; ++j1) {
+ if (!this.a(i1, j1, k, l, i)) {
+ this.c(i1, j1).b(entityplayer);
}
}
}
+ if (markSort) {
+ this.e();
+ }
}
-
- this.j = i;
- this.e();
}
}
+ // Paper end
private void e() {
this.l = true;
@@ -477,4 +506,29 @@ public class PlayerChunkMap {
}
}
// CraftBukkit end
+
+ // Paper start - Player view distance API
+ public void updateViewDistance(EntityPlayer player, int distanceIn) {
+ final int oldViewDistance = player.getViewDistance();
+
+ // This represents the view distance that we will set on the player
+ // It can exist as a negative value
+ int playerViewDistance = MathHelper.clamp(distanceIn, 3, 32);
+
+ // This value is the one we actually use to update the chunk map
+ // We don't ever want this to be a negative
+ int toSet = playerViewDistance;
+
+ if (distanceIn < 0) {
+ playerViewDistance = -1;
+ toSet = world.getPlayerChunkMap().getViewDistance();
+ }
+
+ if (toSet != oldViewDistance) {
+ // Order matters
+ this.setViewDistance(player, toSet);
+ player.setViewDistance(playerViewDistance);
+ }
+ }
+ // Paper end
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 79223dfa6..bb3a48e57 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1600,6 +1600,16 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
}
// Paper end
+ @Override
+ public int getViewDistance() {
+ return getHandle().getViewDistance();
+ }
+
+ @Override
+ public void setViewDistance(int viewDistance) {
+ ((WorldServer) getHandle().world).getPlayerChunkMap().updateViewDistance(getHandle(), viewDistance);
+ }
+
// Spigot start
private final Player.Spigot spigot = new Player.Spigot()
{
--
2.18.0
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