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6a48a4529b
Fixes GH-1295 Non-standard sized portals exacerbate a flaw in the vanilla portal teleportation adjustment logic. As a result, an entity can end up slightly inside of the surrounding portal blocks. In vanilla, this issue is minor and you are adjusted out as if it never happened. In CraftBukkit and derivatives, the anti-suffocation behavior activates and players end up teleported on top of their portals. This improves the offset so as to keep the issue from ever occurring in the first place. Special thanks to CarpetMod who appears to have had this fixed for some time, and has licensed their code such that we can use it as needed.
96 lines
4.5 KiB
Diff
96 lines
4.5 KiB
Diff
From 7a62941977f7d8b8ebb5ca2742e389fed0763274 Mon Sep 17 00:00:00 2001
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From: Zach Brown <zach.brown@destroystokyo.com>
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Date: Tue, 31 Jul 2018 19:32:57 -0500
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Subject: [PATCH] Make portal teleportation adjustment math more accurate
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diff --git a/src/main/java/net/minecraft/server/EnumDirection.java b/src/main/java/net/minecraft/server/EnumDirection.java
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index 854ad49b6..3ee310a9a 100644
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--- a/src/main/java/net/minecraft/server/EnumDirection.java
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+++ b/src/main/java/net/minecraft/server/EnumDirection.java
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@@ -85,6 +85,7 @@ public enum EnumDirection implements INamable {
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return this.i;
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}
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+ public final EnumDirection.EnumAxisDirection getAxisDirection() { return c(); } // Paper - OBFHELPER
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public EnumDirection.EnumAxisDirection c() {
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return this.l;
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}
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@@ -93,6 +94,7 @@ public enum EnumDirection implements INamable {
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return fromType1(this.h);
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}
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+ public final EnumDirection rotateY() { return e(); } // Paper - OBFHELPER
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public EnumDirection e() {
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switch (this) {
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case NORTH:
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@@ -272,6 +274,7 @@ public enum EnumDirection implements INamable {
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this.d = s;
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}
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+ public final int getOffset() { return a(); } // Paper - OBFHELPER
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public int a() {
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return this.c;
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}
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diff --git a/src/main/java/net/minecraft/server/MathHelper.java b/src/main/java/net/minecraft/server/MathHelper.java
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index f52b9c6f0..3adbfb820 100644
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--- a/src/main/java/net/minecraft/server/MathHelper.java
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+++ b/src/main/java/net/minecraft/server/MathHelper.java
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@@ -82,6 +82,7 @@ public class MathHelper {
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return f < f1 ? f1 : (f > f2 ? f2 : f);
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}
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+ public static double clamp(double d0, double d1, double d2) { return a(d0, d1, d2); } // Paper - OBFHELPER
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public static double a(double d0, double d1, double d2) {
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return d0 < d1 ? d1 : (d0 > d2 ? d2 : d0);
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}
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diff --git a/src/main/java/net/minecraft/server/PortalTravelAgent.java b/src/main/java/net/minecraft/server/PortalTravelAgent.java
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index ba8d15431..6d2f5faf2 100644
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--- a/src/main/java/net/minecraft/server/PortalTravelAgent.java
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+++ b/src/main/java/net/minecraft/server/PortalTravelAgent.java
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@@ -208,11 +208,27 @@ public class PortalTravelAgent {
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++d4;
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}
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+ // Paper start - Prevent portal suffocation (and therefore getting teleported up in an attempt to avoid it)
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+ // Based on work by CarpetMod - Licensed GPL-3.0
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+ double offset = (1.0D - entity.getPortalOffset().x) * (double) shapedetector_shapedetectorcollection.getWidth() * (double) shapedetector_shapedetectorcollection.getFacing().rotateY().getAxisDirection().getOffset();
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+ double adjustedRadius = 1.02 * entity.width / 2;
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+ if (adjustedRadius >= shapedetector_shapedetectorcollection.getWidth() - adjustedRadius) {
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+ // entity wider than portal, place it in the middle
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+ adjustedRadius = (double) shapedetector_shapedetectorcollection.getWidth() / 2 - 0.001;
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+ }
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+
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+ if (offset >= 0) {
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+ offset = MathHelper.clamp(offset, adjustedRadius, (double) shapedetector_shapedetectorcollection.getWidth() - adjustedRadius);
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+ } else {
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+ offset = MathHelper.clamp(offset, (double) -shapedetector_shapedetectorcollection.getWidth() + adjustedRadius, -adjustedRadius);
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+ }
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+
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if (shapedetector_shapedetectorcollection.getFacing().k() == EnumDirection.EnumAxis.X) {
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- d3 = d4 + (1.0D - entity.getPortalOffset().x) * (double) shapedetector_shapedetectorcollection.d() * (double) shapedetector_shapedetectorcollection.getFacing().e().c().a();
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+ d3 = d4 + offset;
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} else {
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- d2 = d4 + (1.0D - entity.getPortalOffset().x) * (double) shapedetector_shapedetectorcollection.d() * (double) shapedetector_shapedetectorcollection.getFacing().e().c().a();
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+ d2 = d4 + offset;
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}
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+ // Paper end
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float f1 = 0.0F;
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float f2 = 0.0F;
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diff --git a/src/main/java/net/minecraft/server/ShapeDetector.java b/src/main/java/net/minecraft/server/ShapeDetector.java
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index 3faf74a22..4e1f8c211 100644
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--- a/src/main/java/net/minecraft/server/ShapeDetector.java
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+++ b/src/main/java/net/minecraft/server/ShapeDetector.java
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@@ -140,6 +140,7 @@ public class ShapeDetector {
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return this.c;
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}
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+ public final int getWidth() { return this.d(); } // Paper - OBFHELPER
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public int d() {
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return this.e;
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}
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--
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2.17.1
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