67 lines
4.1 KiB
Diff
67 lines
4.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Lucavon <lucavonlp@gmail.com>
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Date: Tue, 23 Jul 2019 20:29:20 -0500
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Subject: [PATCH] Configurable projectile relative velocity
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This patch adds an option "disable relative projectile velocity", which, when
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nabled, will cause projectiles to ignore the shooter's current velocity,
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like they did in Minecraft 1.8 and prior.
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If a player is falling, for example, their shooting range will be drastically
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reduced, as a downwards velocity is applied to the projectile. This prevents
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players from saving themselves from falling off floating islands, for example,
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as a thrown ender pearl will not make it back to the island, while it would
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have in 1.8.
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While this could easily be done with plugins, too, there are multiple problems:
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P1) If multiple plugins cancel the velocity by subtracting the shooter's velocity
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from the projectile's velocity, the projectile's velocity would be different.
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As there's no way to detect whether the projectile's velocity has already been
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adjusted to ignore the player's velocity, plugins can't not do it if it's not
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necessary.
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P2) I've noticed some inconsistencies, e.g. weird velocity when shooting while
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using an elytra. Checking for those inconsistencies is possible, but not as
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efficient as just not applying the velocity in the first place.
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P3) Solutions for 1) and especially 2) might not be future-proof, while this
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server-internal fix makes this change future-proof.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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index a3fc76b512244ed6ca6b4d8f4babcb81f3cce226..90ba51e05bbed0366b43bc9315f6dfa9e39eee03 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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@@ -543,4 +543,9 @@ public class PaperWorldConfig {
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}
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log("Anti-Xray: " + (antiXray ? "enabled" : "disabled") + " / Engine Mode: " + engineMode.getDescription() + " / Up to " + ((maxChunkSectionIndex + 1) * 16) + " blocks / Update Radius: " + updateRadius);
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}
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+
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+ public boolean disableRelativeProjectileVelocity;
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+ private void disableRelativeProjectileVelocity() {
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+ disableRelativeProjectileVelocity = getBoolean("game-mechanics.disable-relative-projectile-velocity", false);
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/EntityArrow.java b/src/main/java/net/minecraft/server/EntityArrow.java
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index 634e2bd3049d65bbef4ef12e2264049a6980fd71..9c97edf9c9e9a8cdf029264f6b563090142c686b 100644
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--- a/src/main/java/net/minecraft/server/EntityArrow.java
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+++ b/src/main/java/net/minecraft/server/EntityArrow.java
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@@ -85,7 +85,7 @@ public abstract class EntityArrow extends Entity implements IProjectile {
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float f7 = MathHelper.cos(f1 * 0.017453292F) * MathHelper.cos(f * 0.017453292F);
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this.shoot((double) f5, (double) f6, (double) f7, f3, f4);
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- this.setMot(this.getMot().add(entity.getMot().x, entity.onGround ? 0.0D : entity.getMot().y, entity.getMot().z));
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+ if (!entity.world.paperConfig.disableRelativeProjectileVelocity) this.setMot(this.getMot().add(entity.getMot().x, entity.onGround ? 0.0D : entity.getMot().y, entity.getMot().z)); // Paper - allow disabling relative velocity
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}
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@Override
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diff --git a/src/main/java/net/minecraft/server/EntityProjectile.java b/src/main/java/net/minecraft/server/EntityProjectile.java
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index 6c091b68087d60b0b916871eb0ce06c6a2776bf8..f5c8074dcf1c6275bc13eb8f2b67c04ca547877b 100644
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--- a/src/main/java/net/minecraft/server/EntityProjectile.java
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+++ b/src/main/java/net/minecraft/server/EntityProjectile.java
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@@ -43,7 +43,7 @@ public abstract class EntityProjectile extends Entity implements IProjectile {
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this.shoot((double) f5, (double) f6, (double) f7, f3, f4);
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Vec3D vec3d = entity.getMot();
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- this.setMot(this.getMot().add(vec3d.x, entity.onGround ? 0.0D : vec3d.y, vec3d.z));
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+ if (!entity.world.paperConfig.disableRelativeProjectileVelocity) this.setMot(this.getMot().add(vec3d.x, entity.onGround ? 0.0D : vec3d.y, vec3d.z)); // Paper - allow disabling relative velocity
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}
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@Override
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