From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: YouHaveTrouble <youhavetrouble@youhavetrouble.me>
Date: Sun, 22 Aug 2021 05:12:05 +0200
Subject: [PATCH] Extended OfflinePlayer API


diff --git a/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java b/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
index 94ca0407303c4493ab4928b12ec6ecc75aaca549..a138e1b6b66d99f2035de054137a607aa6b7f0b9 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
@@ -363,14 +363,26 @@ public class CraftOfflinePlayer implements OfflinePlayer, ConfigurationSerializa
 
     @Override
     public Location getLocation() {
+        // Purpur start
+        if (this.isOnline()) {
+            return this.getPlayer().getLocation();
+        }
+        // Purpur end
+
         CompoundTag data = this.getData();
         if (data == null) {
             return null;
         }
 
-        if (data.contains("Pos") && data.contains("Rotation")) {
-            ListTag position = (ListTag) data.get("Pos");
-            ListTag rotation = (ListTag) data.get("Rotation");
+        // Purpur start - OfflinePlayer API
+        //if (data.contains("Pos") && data.contains("Rotation")) {
+            ListTag position = data.getList("Pos", net.minecraft.nbt.Tag.TAG_DOUBLE);
+            ListTag rotation = data.getList("Rotation", net.minecraft.nbt.Tag.TAG_FLOAT);
+
+            if (position.isEmpty() && rotation.isEmpty()) {
+                return null;
+            }
+        // Purpur end - OfflinePlayer API
 
             UUID uuid = new UUID(data.getLong("WorldUUIDMost"), data.getLong("WorldUUIDLeast"));
 
@@ -381,9 +393,9 @@ public class CraftOfflinePlayer implements OfflinePlayer, ConfigurationSerializa
                 rotation.getFloat(0),
                 rotation.getFloat(1)
             );
-        }
+        //} // Purpur - OfflinePlayer API
 
-        return null;
+        //return null; // Purpur - OfflinePlayer API
     }
 
     @Override
@@ -626,4 +638,191 @@ public class CraftOfflinePlayer implements OfflinePlayer, ConfigurationSerializa
             manager.save();
         }
     }
+
+    // Purpur start - OfflinePlayer API
+    @Override
+    public boolean getAllowFlight() {
+        if (this.isOnline()) {
+            return this.getPlayer().getAllowFlight();
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return false;
+            if (!data.contains("abilities")) return false;
+            CompoundTag abilities = data.getCompound("abilities");
+            return abilities.getByte("mayfly") == (byte) 1;
+        }
+    }
+
+    @Override
+    public void setAllowFlight(boolean flight) {
+        if (this.isOnline()) {
+            this.getPlayer().setAllowFlight(flight);
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return;
+            if (!data.contains("abilities")) return;
+            CompoundTag abilities = data.getCompound("abilities");
+            abilities.putByte("mayfly", (byte) (flight ? 1 : 0));
+            data.put("abilities", abilities);
+            save(data);
+        }
+    }
+
+    @Override
+    public boolean isFlying() {
+        if (this.isOnline()) {
+            return this.isFlying();
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return false;
+            if (!data.contains("abilities")) return false;
+            CompoundTag abilities = data.getCompound("abilities");
+            return abilities.getByte("flying") == (byte) 1;
+        }
+    }
+
+    @Override
+    public void setFlying(boolean value) {
+        if (this.isOnline()) {
+            this.getPlayer().setFlying(value);
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return;
+            if (!data.contains("abilities")) return;
+            CompoundTag abilities = data.getCompound("abilities");
+            abilities.putByte("mayfly", (byte) (value ? 1 : 0));
+            data.put("abilities", abilities);
+            save(data);
+        }
+    }
+
+    @Override
+    public void setFlySpeed(float value) throws IllegalArgumentException {
+        if (value < -1f || value > 1f) throw new IllegalArgumentException("FlySpeed needs to be between -1 and 1");
+        if (this.isOnline()) {
+            this.getPlayer().setFlySpeed(value);
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return;
+            if (!data.contains("abilities")) return;
+            CompoundTag abilities = data.getCompound("abilities");
+            abilities.putFloat("flySpeed", value);
+            data.put("abilities", abilities);
+            save(data);
+        }
+    }
+
+    @Override
+    public float getFlySpeed() {
+        if (this.isOnline()) {
+            return this.getPlayer().getFlySpeed();
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return 0;
+            if (!data.contains("abilities")) return 0;
+            CompoundTag abilities = data.getCompound("abilities");
+            return abilities.getFloat("flySpeed");
+        }
+    }
+
+    @Override
+    public void setWalkSpeed(float value) throws IllegalArgumentException {
+        if (value < -1f || value > 1f) throw new IllegalArgumentException("WalkSpeed needs to be between -1 and 1");
+        if (this.isOnline()) {
+            this.getPlayer().setWalkSpeed(value);
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return;
+            if (!data.contains("abilities")) return;
+            CompoundTag abilities = data.getCompound("abilities");
+            abilities.putFloat("walkSpeed", value);
+            data.put("abilities", abilities);
+            save(data);
+        }
+    }
+
+    @Override
+    public float getWalkSpeed() {
+        if (this.isOnline()) {
+            return this.getPlayer().getWalkSpeed();
+        } else {
+            CompoundTag data = this.getData();
+            if (data == null) return 0;
+            if (!data.contains("abilities")) return 0;
+            CompoundTag abilities = data.getCompound("abilities");
+            return abilities.getFloat("walkSpeed");
+        }
+    }
+
+    @Override
+    public boolean teleportOffline(Location destination) {
+        if (this.isOnline()) {
+            return this.getPlayer().teleport(destination);
+        } else {
+            return setLocation(destination);
+        }
+    }
+
+    @Override
+    public boolean teleportOffline(Location destination, org.bukkit.event.player.PlayerTeleportEvent.TeleportCause cause){
+        if (this.isOnline()) {
+            return this.getPlayer().teleport(destination, cause);
+        } else {
+            return setLocation(destination);
+        }
+    }
+
+    @Override
+    public java.util.concurrent.CompletableFuture<Boolean> teleportOfflineAsync(Location destination) {
+        if (this.isOnline()) {
+            return this.getPlayer().teleportAsync(destination);
+        } else {
+            return java.util.concurrent.CompletableFuture.completedFuture(setLocation(destination));
+        }
+    }
+
+    @Override
+    public java.util.concurrent.CompletableFuture<Boolean> teleportOfflineAsync(Location destination, org.bukkit.event.player.PlayerTeleportEvent.TeleportCause cause) {
+        if (this.isOnline()) {
+            return this.getPlayer().teleportAsync(destination, cause);
+        } else {
+            return java.util.concurrent.CompletableFuture.completedFuture(setLocation(destination));
+        }
+    }
+
+    private boolean setLocation(Location location) {
+        CompoundTag data = this.getData();
+        if (data == null) return false;
+        data.putLong("WorldUUIDMost", location.getWorld().getUID().getMostSignificantBits());
+        data.putLong("WorldUUIDLeast", location.getWorld().getUID().getLeastSignificantBits());
+        net.minecraft.nbt.ListTag position = new net.minecraft.nbt.ListTag();
+        position.add(net.minecraft.nbt.DoubleTag.valueOf(location.getX()));
+        position.add(net.minecraft.nbt.DoubleTag.valueOf(location.getY()));
+        position.add(net.minecraft.nbt.DoubleTag.valueOf(location.getZ()));
+        data.put("Pos", position);
+        net.minecraft.nbt.ListTag rotation = new net.minecraft.nbt.ListTag();
+        rotation.add(net.minecraft.nbt.FloatTag.valueOf(location.getYaw()));
+        rotation.add(net.minecraft.nbt.FloatTag.valueOf(location.getPitch()));
+        data.put("Rotation", rotation);
+        save(data);
+        return true;
+    }
+
+    /**
+     * Safely replaces player's .dat file with provided CompoundTag
+     * @param compoundTag
+     */
+    private void save(CompoundTag compoundTag) {
+        File playerDir = server.console.playerDataStorage.getPlayerDir();
+        try {
+            File tempFile = File.createTempFile(this.getUniqueId()+"-", ".dat", playerDir);
+            net.minecraft.nbt.NbtIo.writeCompressed(compoundTag, tempFile.toPath());
+            File playerDataFile = new File(playerDir, this.getUniqueId()+".dat");
+            File playerDataFileOld = new File(playerDir, this.getUniqueId()+".dat_old");
+            net.minecraft.Util.safeReplaceFile(playerDataFile.toPath(), tempFile.toPath(), playerDataFileOld.toPath());
+        } catch (java.io.IOException e) {
+            e.printStackTrace();
+        }
+    }
+    // Purpur end - OfflinePlayer API
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 800ea83ff1e927b38857dccc009dd57cd746749c..5676d81f54130f747adfd0d26f28d5ae288e656e 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -2773,6 +2773,28 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return this.getHandle().getAbilities().walkingSpeed * 2f;
     }
 
+    // Purpur start - OfflinePlayer API
+    @Override
+    public boolean teleportOffline(@NotNull Location destination) {
+        return this.teleport(destination);
+    }
+
+    @Override
+    public boolean teleportOffline(Location destination, PlayerTeleportEvent.TeleportCause cause) {
+        return this.teleport(destination, cause);
+    }
+
+    @Override
+    public java.util.concurrent.CompletableFuture<Boolean> teleportOfflineAsync(@NotNull Location destination) {
+        return this.teleportAsync(destination);
+    }
+
+    @Override
+    public java.util.concurrent.CompletableFuture<Boolean> teleportOfflineAsync(@NotNull Location destination, PlayerTeleportEvent.TeleportCause cause) {
+        return this.teleportAsync(destination, cause);
+    }
+    // Purpur end - OfflinePlayer API
+
     private void validateSpeed(float value) {
         Preconditions.checkArgument(value <= 1f && value >= -1f, "Speed value (%s) need to be between -1f and 1f", value);
     }