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Paper/CraftBukkit-Patches/0146-Alternative-Hopper-Ticking.patch
Evan A. Haskell 32f41dfe9a Add alternative hopper ticking 
This change offers a config option intending to improve hopper ticking performance while maintaining vanilla hopper behavior. Rather than polling each hopper each tick, this alternative method relies on inventory changes and redstone updates to schedule a hopper tick.
2014-05-24 17:16:57 +10:00

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From e8b30c53ce2cd6e2be450d6d03f8977c79bcc231 Mon Sep 17 00:00:00 2001
From: "Evan A. Haskell" <eah2119@gmail.com>
Date: Sat, 19 Apr 2014 16:58:26 -0400
Subject: [PATCH] Alternative Hopper Ticking
diff --git a/src/main/java/net/minecraft/server/BlockHopper.java b/src/main/java/net/minecraft/server/BlockHopper.java
index 9e64702..36682df 100644
--- a/src/main/java/net/minecraft/server/BlockHopper.java
+++ b/src/main/java/net/minecraft/server/BlockHopper.java
@@ -87,6 +87,14 @@ public class BlockHopper extends BlockContainer {
if (flag != flag1) {
world.setData(i, j, k, i1 | (flag ? 0 : 8), 4);
+ // Spigot start - When this hopper becomes unpowered, make it active.
+ if (world.spigotConfig.altHopperTicking) {
+ TileEntityHopper hopper = e((IBlockAccess) world, i, j, k);
+ if (flag && hopper != null) {
+ hopper.makeTick();
+ }
+ }
+ // Spigot end
}
}
@@ -163,4 +171,16 @@ public class BlockHopper extends BlockContainer {
public static TileEntityHopper e(IBlockAccess iblockaccess, int i, int j, int k) {
return (TileEntityHopper) iblockaccess.getTileEntity(i, j, k);
}
+
+ // Spigot start - Use random block updates to make hoppers active.
+ @Override
+ public void a(World world, int i, int j, int k, Random random) {
+ if (world.spigotConfig.altHopperTicking) {
+ TileEntityHopper hopper = e((IBlockAccess) world, i, j, k);
+ if (hopper != null) {
+ hopper.makeTick();
+ }
+ }
+ }
+ // Spigot end
}
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 364df1d..5771fbd 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -722,6 +722,11 @@ public class Chunk {
tileentity.t();
this.tileEntities.put(chunkposition, tileentity);
+ // Spigot start - We have a world, now we can be sure hoppers are born ticking.
+ if (this.world.spigotConfig.altHopperTicking) {
+ this.world.triggerHoppersList.add(tileentity);
+ }
+ // Spigot end
// CraftBukkit start
} else {
System.out.println("Attempted to place a tile entity (" + tileentity + ") at " + tileentity.x + "," + tileentity.y + "," + tileentity.z
diff --git a/src/main/java/net/minecraft/server/EntityItem.java b/src/main/java/net/minecraft/server/EntityItem.java
index 5eb893f..f9e16ac 100644
--- a/src/main/java/net/minecraft/server/EntityItem.java
+++ b/src/main/java/net/minecraft/server/EntityItem.java
@@ -102,6 +102,26 @@ public class EntityItem extends Entity {
if (this.onGround) {
this.motY *= -0.5D;
}
+ // Spigot start - Make the hopper below this item active.
+ if (this.world.spigotConfig.altHopperTicking) {
+ int xi = MathHelper.floor(this.boundingBox.a);
+ int yi = MathHelper.floor(this.boundingBox.b) - 1;
+ int zi = MathHelper.floor(this.boundingBox.c);
+ int xf = MathHelper.floor(this.boundingBox.d);
+ int yf = MathHelper.floor(this.boundingBox.e) - 1;
+ int zf = MathHelper.floor(this.boundingBox.f);
+ for (int a = xi; a <= xf; a++) {
+ for (int c = zi; c <= zf; c++) {
+ for (int b = yi; b <= yf; b++) {
+ TileEntity tileEntity = this.world.getTileEntity(a, b, c);
+ if (tileEntity instanceof TileEntityHopper) {
+ ((TileEntityHopper) tileEntity).makeTick();
+ }
+ }
+ }
+ }
+ }
+ // Spigot end
// ++this.age; // CraftBukkit - Moved up
if (!this.world.isStatic && this.age >= world.spigotConfig.itemDespawnRate) { // Spigot
diff --git a/src/main/java/net/minecraft/server/EntityMinecartAbstract.java b/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
index 166206c..1305526 100644
--- a/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
+++ b/src/main/java/net/minecraft/server/EntityMinecartAbstract.java
@@ -342,6 +342,26 @@ public abstract class EntityMinecartAbstract extends Entity {
this.passenger = null;
}
+ // Spigot start - Make hoppers adjacent to this container minecart active.
+ if (this.world.spigotConfig.altHopperTicking && this instanceof EntityMinecartContainer) {
+ int xi = MathHelper.floor(this.boundingBox.a) - 1;
+ int yi = MathHelper.floor(this.boundingBox.b) - 1;
+ int zi = MathHelper.floor(this.boundingBox.c) - 1;
+ int xf = MathHelper.floor(this.boundingBox.d) + 1;
+ int yf = MathHelper.floor(this.boundingBox.e) + 1;
+ int zf = MathHelper.floor(this.boundingBox.f) + 1;
+ for (int a = xi; a <= xf; a++) {
+ for (int b = yi; b <= yf; b++) {
+ for (int c = zi; c <= zf; c++) {
+ TileEntity tileEntity = this.world.getTileEntity(a, b, c);
+ if (tileEntity instanceof TileEntityHopper) {
+ ((TileEntityHopper) tileEntity).makeTick();
+ }
+ }
+ }
+ }
+ }
+ // Spigot end
}
}
diff --git a/src/main/java/net/minecraft/server/EntityOcelot.java b/src/main/java/net/minecraft/server/EntityOcelot.java
index 603e53d..b5fe441 100644
--- a/src/main/java/net/minecraft/server/EntityOcelot.java
+++ b/src/main/java/net/minecraft/server/EntityOcelot.java
@@ -27,6 +27,29 @@ public class EntityOcelot extends EntityTameableAnimal {
this.datawatcher.a(18, Byte.valueOf((byte) 0));
}
+ // Spigot start - When this ocelot begins standing, any chests below this ocelot must be
+ // updated as if its contents have changed.
+ @Override
+ public void h() {
+ if (this.world.spigotConfig.altHopperTicking && this.isSitting()) {
+ int xi = MathHelper.floor(this.boundingBox.a);
+ int yi = MathHelper.floor(this.boundingBox.b) - 1;
+ int zi = MathHelper.floor(this.boundingBox.c);
+ int xf = MathHelper.floor(this.boundingBox.d);
+ int yf = MathHelper.floor(this.boundingBox.e) - 1;
+ int zf = MathHelper.floor(this.boundingBox.f);
+ for (int a = xi; a <= xf; a++) {
+ for (int c = zi; c <= zf; c++) {
+ for (int b = yi; b <= yf; b++) {
+ this.world.updateChestAndHoppers(a, b, c);
+ }
+ }
+ }
+ }
+ super.h();
+ }
+ // Spigot end
+
public void bo() {
if (this.getControllerMove().a()) {
double d0 = this.getControllerMove().b();
diff --git a/src/main/java/net/minecraft/server/TileEntity.java b/src/main/java/net/minecraft/server/TileEntity.java
index 19d008c..4a0ca46 100644
--- a/src/main/java/net/minecraft/server/TileEntity.java
+++ b/src/main/java/net/minecraft/server/TileEntity.java
@@ -24,6 +24,36 @@ public class TileEntity {
public int g = -1;
public Block h;
+ // Spigot start
+ // Used for alternative ticking. If the hopper at x0, y0, z0 is pointed at this tile entity, make it active.
+ private void scheduleTick(int x0, int y0, int z0) {
+ TileEntity tileEntity = this.world.getTileEntity(x0, y0, z0);
+ if (tileEntity instanceof TileEntityHopper && tileEntity.world != null) {
+ int i = BlockHopper.b(tileEntity.p());
+ if (tileEntity.x + Facing.b[i] == this.x && tileEntity.y + Facing.c[i] == this.y && tileEntity.z + Facing.d[i] == this.z) {
+ ((TileEntityHopper) tileEntity).makeTick();
+ }
+ }
+ }
+
+ // Contents have changed, so hoppers need ticking. Check all 6 faces.
+ public void scheduleTicks() {
+ if (this.world != null && this.world.spigotConfig.altHopperTicking) {
+ // check the top
+ this.scheduleTick(this.x, this.y + 1, this.z);
+ // check the sides
+ for (int i = 2; i < 6; i++) {
+ this.scheduleTick(this.x + Facing.b[i], this.y, this.z + Facing.d[i]);
+ }
+ // check the bottom
+ TileEntity tileEntity = this.world.getTileEntity(this.x, this.y - 1, this.z);
+ if (tileEntity instanceof TileEntityHopper && tileEntity.world != null) {
+ ((TileEntityHopper) tileEntity).makeTick();
+ }
+ }
+ }
+ // Spigot end
+
public TileEntity() {}
private static void a(Class oclass, String s) {
@@ -105,6 +135,9 @@ public class TileEntity {
if (this.q() != Blocks.AIR) {
this.world.f(this.x, this.y, this.z, this.q());
}
+ // Spigot start - The contents have changed, so make the hoppers pointed at this inventory active.
+ this.scheduleTicks();
+ // Spigot end
}
}
diff --git a/src/main/java/net/minecraft/server/TileEntityHopper.java b/src/main/java/net/minecraft/server/TileEntityHopper.java
index b620394..02c07cd 100644
--- a/src/main/java/net/minecraft/server/TileEntityHopper.java
+++ b/src/main/java/net/minecraft/server/TileEntityHopper.java
@@ -17,6 +17,42 @@ public class TileEntityHopper extends TileEntity implements IHopper {
private String i;
private int j = -1;
+ // Spigot start
+ private long nextTick = -1; // Next tick this hopper will be ticked
+ private long lastTick = -1; // Last tick this hopper was polled
+
+ // To be used only with the alternative ticking. If this hopper is not cooling down, assaign a visible tick for next time.
+ public void makeTick() {
+ if (!this.j()) {
+ this.c(0);
+ }
+ }
+
+ // Contents changed, so make this hopper active.
+ public void scheduleHopperTick() {
+ if (this.world != null && this.world.spigotConfig.altHopperTicking) {
+ this.makeTick();
+ }
+ }
+
+ // We can't use config or c() if we don't have a world, so this is called when this hopper is assaigned a world.
+ // Is also called when alt hopper ticking is turned on from the reload command
+ public void convertToScheduling() {
+ this.c(this.j);
+ }
+
+ // Called when alt hopper ticking is turned off from the reload command
+ public void convertToPolling() {
+ long cooldownDiff;
+ if (this.lastTick == this.world.getTime()) {
+ cooldownDiff = this.nextTick - this.world.getTime();
+ } else {
+ cooldownDiff = this.nextTick - this.world.getTime() + 1;
+ }
+ this.c((int) Math.max(0, Math.min(cooldownDiff, Integer.MAX_VALUE)));
+ }
+ // Spigot end
+
// CraftBukkit start - add fields and methods
public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
private int maxStack = MAX_STACK;
@@ -80,7 +116,19 @@ public class TileEntityHopper extends TileEntity implements IHopper {
}
nbttagcompound.set("Items", nbttaglist);
- nbttagcompound.setInt("TransferCooldown", this.j);
+ // Spigot start - Need to write the correct cooldown to disk. We convert from long to int on saving.
+ if (this.world != null && this.world.spigotConfig.altHopperTicking) {
+ long cooldownDiff;
+ if (this.lastTick == this.world.getTime()) {
+ cooldownDiff = this.nextTick - this.world.getTime();
+ } else {
+ cooldownDiff = this.nextTick - this.world.getTime() + 1;
+ }
+ nbttagcompound.setInt("TransferCooldown", (int) Math.max(0, Math.min(cooldownDiff, Integer.MAX_VALUE)));
+ } else {
+ nbttagcompound.setInt("TransferCooldown", this.j);
+ }
+ // Spigot end
if (this.k_()) {
nbttagcompound.setString("CustomName", this.i);
}
@@ -88,6 +136,9 @@ public class TileEntityHopper extends TileEntity implements IHopper {
public void update() {
super.update();
+ // Spigot start - The contents have changed, so make this hopper active.
+ this.scheduleHopperTick();
+ // Spigot end
}
public int getSize() {
@@ -167,11 +218,20 @@ public class TileEntityHopper extends TileEntity implements IHopper {
public void h() {
if (this.world != null && !this.world.isStatic) {
- --this.j;
- if (!this.j()) {
- this.c(0);
- this.i();
+ // Spigot start
+ if (this.world.spigotConfig.altHopperTicking) {
+ this.lastTick = this.world.getTime();
+ if (this.nextTick == this.world.getTime()) {
+ this.i();
+ }
+ } else {
+ --this.j;
+ if (!this.j()) {
+ this.c(0);
+ this.i();
+ }
}
+ // Spigot end
}
}
@@ -196,7 +256,7 @@ public class TileEntityHopper extends TileEntity implements IHopper {
}
// Spigot start
- if ( !this.j() )
+ if ( !world.spigotConfig.altHopperTicking && !this.j() )
{
this.c( world.spigotConfig.hopperCheck );
}
@@ -584,10 +644,34 @@ public class TileEntityHopper extends TileEntity implements IHopper {
}
public void c(int i) {
- this.j = i;
+ // Spigot start - i is the delay for which this hopper will be ticked next.
+ // i of 1 or below implies a tick next tick.
+ if (this.world != null && this.world.spigotConfig.altHopperTicking) {
+ if (i <= 0) {
+ i = 1;
+ }
+ if (this.lastTick == this.world.getTime()) {
+ this.nextTick = this.world.getTime() + i;
+ } else {
+ this.nextTick = this.world.getTime() + i - 1;
+ }
+ } else {
+ this.j = i;
+ }
+ // Spigot end
}
public boolean j() {
- return this.j > 0;
+ // Spigot start - Return whether this hopper is cooling down.
+ if (this.world != null && this.world.spigotConfig.altHopperTicking) {
+ if (this.lastTick == this.world.getTime()) {
+ return this.nextTick > this.world.getTime();
+ } else {
+ return this.nextTick >= this.world.getTime();
+ }
+ } else {
+ return this.j > 0;
+ }
+ // Spigot end
}
}
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index a879ae3..3559bfc 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -113,6 +113,7 @@ public abstract class World implements IBlockAccess {
private final byte chunkTickRadius;
public static boolean haveWeSilencedAPhysicsCrash;
public static String blockLocation;
+ public List<TileEntity> triggerHoppersList = new ArrayList<TileEntity>(); // Spigot
public static long chunkToKey(int x, int z)
{
@@ -130,6 +131,40 @@ public abstract class World implements IBlockAccess {
{
return (int) ( ( ( k >> 32 ) & 0xFFFF0000L ) | ( ( k >> 16 ) & 0x0000FFFF ) );
}
+
+ // Spigot Start
+ private void initializeHoppers() {
+ if (this.spigotConfig.altHopperTicking) {
+ for (TileEntity o : this.triggerHoppersList) {
+ o.scheduleTicks();
+ if (o instanceof TileEntityHopper) {
+ ((TileEntityHopper) o).convertToScheduling();
+ ((TileEntityHopper) o).scheduleHopperTick();
+ }
+ }
+ }
+ triggerHoppersList.clear();
+ }
+
+ // To be used only with alt hopper ticking
+ public void updateChestAndHoppers(int a, int b, int c) {
+ Block block = this.getType(a, b, c);
+ if (block instanceof BlockChest) {
+ TileEntity tile = this.getTileEntity(a, b, c);
+ if (tile instanceof TileEntityChest) {
+ tile.scheduleTicks();
+ }
+ for (int i = 2; i < 6; i++) {
+ if (this.getType(a + Facing.b[i], b, c + Facing.d[i]) == block) {
+ tile = this.getTileEntity(a + Facing.b[i], b, c + Facing.d[i]);
+ if (tile instanceof TileEntityChest) {
+ tile.scheduleTicks();
+ }
+ break;
+ }
+ }
+ }
+ }
// Spigot end
public BiomeBase getBiome(int i, int j) {
@@ -404,6 +439,12 @@ public abstract class World implements IBlockAccess {
this.notifyAndUpdatePhysics(i, j, k, chunk, block1, block, i1);
// CraftBukkit end
}
+ // Spigot start - If this block is changing to that which a chest beneath it
+ // becomes able to be opened, then said chest must be updated
+ if (this.spigotConfig.altHopperTicking && block1 != null && block1.r() && !block.r()) {
+ this.updateChestAndHoppers(i, j - 1, k);
+ }
+ // Spigot end
return flag;
}
@@ -1455,6 +1496,7 @@ public abstract class World implements IBlockAccess {
}
// Spigot End
this.M = true;
+ this.initializeHoppers(); // Spigot - hopper ticking
Iterator iterator = this.tileEntityList.iterator();
while (iterator.hasNext()) {
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index 3e6b1e6..a81b7c9 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -166,11 +166,35 @@ public class SpigotWorldConfig
log( "Entity Tracking Range: Pl " + playerTrackingRange + " / An " + animalTrackingRange + " / Mo " + monsterTrackingRange + " / Mi " + miscTrackingRange + " / Other " + otherTrackingRange );
}
+ public boolean altHopperTicking;
public int hopperTransfer;
public int hopperCheck;
public int hopperAmount;
private void hoppers()
{
+ // Alternate ticking method. Uses inventory changes, redstone updates etc.
+ // to update hoppers. Hopper-check is disabled when this is true.
+ boolean prev = altHopperTicking;
+ altHopperTicking = getBoolean( "hopper-alt-ticking", false );
+ // Necessary for the reload command
+ if (prev != altHopperTicking) {
+ net.minecraft.server.World world = (net.minecraft.server.World) Bukkit.getWorld(this.worldName);
+ if (world != null) {
+ if (altHopperTicking) {
+ for (Object o : world.tileEntityList) {
+ if (o instanceof net.minecraft.server.TileEntityHopper) {
+ ((net.minecraft.server.TileEntityHopper) o).convertToScheduling();
+ }
+ }
+ } else {
+ for (Object o : world.tileEntityList) {
+ if (o instanceof net.minecraft.server.TileEntityHopper) {
+ ((net.minecraft.server.TileEntityHopper) o).convertToPolling();
+ }
+ }
+ }
+ }
+ }
// Set the tick delay between hopper item movements
hopperTransfer = getInt( "ticks-per.hopper-transfer", 8 );
// Set the tick delay between checking for items after the associated
@@ -178,6 +202,7 @@ public class SpigotWorldConfig
// hopper sorting machines from becoming out of sync.
hopperCheck = getInt( "ticks-per.hopper-check", hopperTransfer );
hopperAmount = getInt( "hopper-amount", 1 );
+ log( "Alternative Hopper Ticking: " + altHopperTicking );
log( "Hopper Transfer: " + hopperTransfer + " Hopper Check: " + hopperCheck + " Hopper Amount: " + hopperAmount );
}
--
1.9.1
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