feat: Add SerializableType to PropertyMap, closes #1250

fxgl-core/src/main/kotlin/com/almasb/fxgl/core/collection/PropertyMap.kt

@@ -9,6 +9,8 @@ package com.almasb.fxgl.core.collection
 import javafx.beans.property.*
 import javafx.beans.value.ChangeListener
 import javafx.beans.value.ObservableValue
+import com.almasb.fxgl.core.serialization.SerializableType
+import com.almasb.fxgl.core.serialization.Bundle
 import java.util.*
 
 
@@ -23,10 +25,11 @@ import java.util.*
  * SimpleObjectProperty.
  *
  * Null values are not allowed.
+ * Object Properties are not supported for Serialization.
  *
  * @author Almas Baimagambetov ([email protected])
  */
-class PropertyMap {
+class PropertyMap : SerializableType {
 
     companion object {
         @JvmStatic fun fromStringMap(map: Map<String, String>): PropertyMap {
@@ -309,6 +312,20 @@ class PropertyMap {
         }
     }
 
+    override fun write(bundle: Bundle) {
+        // Convert to string map
+        this.toStringMap().forEach { (key, value) ->
+            // write to bundle
+            bundle.put(key, value)
+        }
+    }
+
+    override fun read(bundle: Bundle) {
+        bundle.data.forEach { (key, value) ->
+            this.setValue(key, toValue(value.toString()))
+        }
+    }
+
     override fun toString(): String {
         return properties.toMap().toString()
     }

fxgl-core/src/test/kotlin/com/almasb/fxgl/core/collection/PropertyMapTest.kt

@@ -7,6 +7,7 @@
 package com.almasb.fxgl.core.collection
 
 import com.almasb.fxgl.core.math.Vec2
+import com.almasb.fxgl.core.serialization.Bundle
 import javafx.beans.property.SimpleIntegerProperty
 import javafx.beans.property.StringProperty
 import org.hamcrest.MatcherAssert.assertThat
@@ -412,6 +413,33 @@ class PropertyMapTest {
         assertThat(map2.getBoolean("key5"), `is`(true))
     }
 
+    @Test
+    fun `Serialize Property Map`() {
+        // Set test values
+        map.setValue("key1", "ABC")
+        map.setValue("key2", 100)
+        map.setValue("key3", 10.0)
+        map.setValue("key4", true)
+
+        // Create a bundle
+        val testBundle = Bundle("propertyMap")
+
+        // Write to bundle
+        map.write(testBundle)
+
+        // Create a new PropertyMap to test
+        val map2 = PropertyMap()
+
+        // Read from bundle
+        map2.read(testBundle)
+
+        // Check test values
+        assertThat(map2.getString("key1"), `is`("ABC"))
+        assertThat(map2.getInt("key2"), `is`(100))
+        assertThat(map2.getDouble("key3"), `is`(10.0))
+        assertThat(map2.getBoolean("key4"), `is`(true))
+    }
+
     private class MyClass(val i: Int)