Added serializable support

src/main/kotlin/net/axay/kspigot/serialization/SpigotSerializable.kt

@@ -0,0 +1,27 @@
+package net.axay.kspigot.serialization
+
+import net.axay.kspigot.main.ValueHolder
+
+interface SpigotSerializable<T> {
+    /**
+     * Converts this serializable object
+     * into the corresponding spigot object.
+     */
+    fun toSpigot(): T
+}
+
+interface SpigotSerialzableCompanion<T>
+
+/**
+ * @return A json string.
+ */
+fun SpigotSerializable<*>.serialize(pretty: Boolean = true): String
+        = ValueHolder.getGson(pretty).toJson(this)
+
+/**
+ * Deserializes the given json string and
+ * returns the deserialized object.
+ */
+@Suppress("unused")
+inline fun <reified T> SpigotSerialzableCompanion<T>.deserialize(json: String): T
+        = ValueHolder.getGson(false).fromJson(json, T::class.java)

src/main/kotlin/net/axay/kspigot/serialization/serializables/SerializableLocation.kt

@@ -0,0 +1,26 @@
+@file:Suppress("MemberVisibilityCanBePrivate")
+
+package net.axay.kspigot.serialization.serializables
+
+import net.axay.kspigot.serialization.SpigotSerializable
+import net.axay.kspigot.serialization.SpigotSerialzableCompanion
+import org.bukkit.Bukkit
+import org.bukkit.Location
+
+class SerializableLocation(
+    val world: String?,
+    val x: Double,
+    val y: Double,
+    val z: Double,
+    val direction: SerializableVector
+) : SpigotSerializable<Location> {
+
+    companion object : SpigotSerialzableCompanion<SerializableLocation>
+
+    constructor(loc: Location) : this(loc.world?.name, loc.x, loc.y, loc.z, SerializableVector(loc.direction))
+
+    override fun toSpigot()
+        = Location(world?.let { Bukkit.getWorld(world) }, x, y, z)
+            .apply { direction = this@SerializableLocation.direction.toSpigot() }
+
+}

src/main/kotlin/net/axay/kspigot/serialization/serializables/SerializableVector.kt

@@ -0,0 +1,21 @@
+@file:Suppress("MemberVisibilityCanBePrivate")
+
+package net.axay.kspigot.serialization.serializables
+
+import net.axay.kspigot.serialization.SpigotSerializable
+import net.axay.kspigot.serialization.SpigotSerialzableCompanion
+import org.bukkit.util.Vector
+
+class SerializableVector(
+    val x: Double,
+    val y: Double,
+    val z: Double
+) : SpigotSerializable<Vector> {
+
+    companion object : SpigotSerialzableCompanion<SerializableVector>
+
+    constructor(vec: Vector) : this(vec.x, vec.y, vec.z)
+
+    override fun toSpigot() = Vector(x, y, z)
+
+}