Purpur/purpur-server/minecraft-patches/features/0006-Minecart-settings-and-WASD-controls.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Sat, 29 Jun 2019 02:32:40 -0500
Subject: [PATCH] Minecart settings and WASD controls


diff --git a/net/minecraft/server/level/ServerPlayer.java b/net/minecraft/server/level/ServerPlayer.java
index c7e81ed584a3da2521fad58049ee44c18947ca23..77e8d62979b421d1fddc0c4d2b224ceec14a297f 100644
--- a/net/minecraft/server/level/ServerPlayer.java
+++ b/net/minecraft/server/level/ServerPlayer.java
@@ -1315,6 +1315,11 @@ public class ServerPlayer extends Player implements ca.spottedleaf.moonrise.patc
 
         // Purpur start - Add boat fall damage config
         if (source.is(net.minecraft.tags.DamageTypeTags.IS_FALL)) {
+            // Purpur start - Minecart settings and WASD controls
+            if (getRootVehicle() instanceof AbstractMinecart && level().purpurConfig.minecartControllable && !level().purpurConfig.minecartControllableFallDamage) {
+                return false;
+            }
+            // Purpur end - Minecart settings and WASD controls
             if (getRootVehicle() instanceof net.minecraft.world.entity.vehicle.boat.Boat && !level().purpurConfig.boatsDoFallDamage) {
                 return false;
             }
diff --git a/net/minecraft/world/entity/vehicle/minecart/AbstractMinecart.java b/net/minecraft/world/entity/vehicle/minecart/AbstractMinecart.java
index 5ad77636d0681d1f0341cff4482ba6ad52f3583b..c635999ec8d5e0508cd66e0c4982692450963235 100644
--- a/net/minecraft/world/entity/vehicle/minecart/AbstractMinecart.java
+++ b/net/minecraft/world/entity/vehicle/minecart/AbstractMinecart.java
@@ -105,6 +105,10 @@ public abstract class AbstractMinecart extends VehicleEntity {
     private double flyingY = this.getAirDrag();
     private double flyingZ = this.getAirDrag();
     public @Nullable Double maxSpeed;
+    // Purpur start - Minecart settings and WASD controls
+    public double storedMaxSpeed;
+    public boolean isNewBehavior;
+    // Purpur end - Minecart settings and WASD controls
     public net.kyori.adventure.util.TriState frictionState = net.kyori.adventure.util.TriState.NOT_SET; // Paper - Friction API
     // CraftBukkit end
 
@@ -113,8 +117,13 @@ public abstract class AbstractMinecart extends VehicleEntity {
         this.blocksBuilding = true;
         if (useExperimentalMovement(level)) {
             this.behavior = new NewMinecartBehavior(this);
+            this.isNewBehavior = true; // Purpur - Minecart settings and WASD controls
         } else {
             this.behavior = new OldMinecartBehavior(this);
+            // Purpur start - Minecart settings and WASD controls
+            this.isNewBehavior = false;
+            maxSpeed = storedMaxSpeed = level.purpurConfig.minecartMaxSpeed;
+            // Purpur end - Minecart settings and WASD controls
         }
     }
 
@@ -289,6 +298,14 @@ public abstract class AbstractMinecart extends VehicleEntity {
 
     @Override
     public void tick() {
+        // Purpur start - Minecart settings and WASD controls
+        if (!this.isNewBehavior) {
+            if (storedMaxSpeed != level().purpurConfig.minecartMaxSpeed) {
+                maxSpeed = storedMaxSpeed = level().purpurConfig.minecartMaxSpeed;
+            }
+        }
+        // Purpur end - Minecart settings and WASD controls
+
         // CraftBukkit start
         double prevX = this.getX();
         double prevY = this.getY();
@@ -405,15 +422,61 @@ public abstract class AbstractMinecart extends VehicleEntity {
         this.behavior.moveAlongTrack(level);
     }
 
+    // Purpur start - Minecart settings and WASD controls
+    private Double lastSpeed;
+
+    public double getControllableSpeed() {
+        BlockState blockState = level().getBlockState(this.blockPosition());
+        if (!blockState.isSolid()) {
+            blockState = level().getBlockState(this.blockPosition().relative(Direction.DOWN));
+        }
+        Double speed = level().purpurConfig.minecartControllableBlockSpeeds.get(blockState.getBlock());
+        if (!blockState.isSolid()) {
+            speed = lastSpeed;
+        }
+        if (speed == null) {
+            speed = level().purpurConfig.minecartControllableBaseSpeed;
+        }
+        return lastSpeed = speed;
+    }
+    // Purpur end - Minecart settings and WASD controls
+
     protected void comeOffTrack(final ServerLevel level) {
         double maxSpeed = this.getMaxSpeed(level);
         Vec3 movement = this.getDeltaMovement();
         this.setDeltaMovement(Mth.clamp(movement.x, -maxSpeed, maxSpeed), movement.y, Mth.clamp(movement.z, -maxSpeed, maxSpeed));
+
+        // Purpur start - Minecart settings and WASD controls
+        if (level().purpurConfig.minecartControllable && !isInWater() && !isInLava() && !passengers.isEmpty()) {
+            Entity passenger = passengers.get(0);
+            if (passenger instanceof net.minecraft.server.level.ServerPlayer player) {
+                net.minecraft.world.entity.player.Input lastClientInput = player.getLastClientInput();
+                float forward = (lastClientInput.forward() == lastClientInput.backward() ? 0.0F : lastClientInput.forward() ? 1.0F : -1.0F);
+                if (lastClientInput.jump() && this.onGround) {
+                    setDeltaMovement(new Vec3(getDeltaMovement().x, level().purpurConfig.minecartControllableHopBoost, getDeltaMovement().z));
+                }
+                if (forward != 0.0F) {
+                    org.bukkit.util.Vector velocity = player.getBukkitEntity().getEyeLocation().getDirection().normalize().multiply(getControllableSpeed());
+                    if (forward < 0.0) {
+                        velocity.multiply(-0.5);
+                    }
+                    setDeltaMovement(new Vec3(velocity.getX(), getDeltaMovement().y, velocity.getZ()));
+                }
+                this.setYRot(passenger.getYRot() - 90);
+                maxUpStep = level().purpurConfig.minecartControllableStepHeight;
+            } else {
+                maxUpStep = 0.0F;
+            }
+        } else {
+            maxUpStep = 0.0F;
+        }
+        // Purpur end - Minecart settings and WASD controls
         if (this.onGround()) {
             // CraftBukkit start - replace magic numbers with our variables
             this.setDeltaMovement(new Vec3(this.getDeltaMovement().x * this.derailedX, this.getDeltaMovement().y * this.derailedY, this.getDeltaMovement().z * this.derailedZ));
             // CraftBukkit end
         }
+        else if (level().purpurConfig.minecartControllable) setDeltaMovement(new Vec3(getDeltaMovement().x * derailedX, getDeltaMovement().y, getDeltaMovement().z * derailedZ)); // Purpur - Minecart settings and WASD controls
 
         this.move(MoverType.SELF, this.getDeltaMovement());
         if (!this.onGround()) {
diff --git a/net/minecraft/world/item/MinecartItem.java b/net/minecraft/world/item/MinecartItem.java
index 2ce6aecf5e34528c9601ce2f071bebd6c2f47243..a817247544186e51d3748af0ecfd78164e37e012 100644
--- a/net/minecraft/world/item/MinecartItem.java
+++ b/net/minecraft/world/item/MinecartItem.java
@@ -30,7 +30,8 @@ public class MinecartItem extends Item {
         BlockPos pos = context.getClickedPos();
         BlockState blockState = level.getBlockState(pos);
         if (!blockState.is(BlockTags.RAILS)) {
-            return InteractionResult.FAIL;
+            if (!level.purpurConfig.minecartPlaceAnywhere) return InteractionResult.FAIL; // Purpur - Minecart settings and WASD controls
+            if (blockState.isSolid()) pos = pos.relative(context.getClickedFace());
         }
 
         ItemStack itemStack = context.getItemInHand();