prog

src/dusk/entity/component.h

@@ -7,14 +7,18 @@
 
 #pragma once
 #include "entitybase.h"
+#include "error/error.h"
 
-#define X(enumName, type, field, init, dispose, render) \
+#include <yyjson.h>
+
+#define X(enumName, type, field, init, dispose, render, serialize, deserialize) \
   // do nothing
 #include "componentlist.h"
 #undef X
 
 typedef union {
-  #define X(enumName, type, field, init, dispose, render) type field;
+  #define X(enumName, type, field, init, dispose, render, serialize, deserialize) \
+    type field;
   #include "componentlist.h"
   #undef X
 } componentdata_t;
@@ -25,12 +29,23 @@ typedef struct {
   void (*init)(const entityid_t, const componentid_t);
   void (*dispose)(const entityid_t, const componentid_t);
   errorret_t (*render)(const entityid_t, const componentid_t);
+  void (*serialize)(
+    const entityid_t,
+    const componentid_t,
+    yyjson_mut_doc *,
+    yyjson_mut_val *
+  );
+  errorret_t (*deserialize)(
+    const entityid_t,
+    const componentid_t,
+    yyjson_val *
+  );
 } componentdefinition_t;
 
 typedef enum {
   COMPONENT_TYPE_NULL,
 
-  #define X(enumName, type, field, init, dispose, render) \
+  #define X(enumName, type, field, init, dispose, render, serialize, deserialize) \
     COMPONENT_TYPE_##enumName,
   #include "componentlist.h"
   #undef X
@@ -117,4 +132,34 @@ void componentDispose(
  *
  * @return Error state.
  */
-errorret_t componentRenderAll(void);
+errorret_t componentRenderAll(void);
+
+/**
+ * Serializes a component's configurable state into a JSON object. The caller
+ * is responsible for creating and owning the doc and obj.
+ *
+ * @param entityId The entity ID.
+ * @param componentId The component ID.
+ * @param doc The mutable JSON document to allocate values from.
+ * @param obj The JSON object to write fields into.
+ */
+void componentSerialize(
+  const entityid_t entityId,
+  const componentid_t componentId,
+  yyjson_mut_doc *doc,
+  yyjson_mut_val *obj
+);
+
+/**
+ * Deserializes a component's configurable state from a JSON object.
+ *
+ * @param entityId The entity ID.
+ * @param componentId The component ID.
+ * @param obj The JSON object to read fields from.
+ * @return Error state.
+ */
+errorret_t componentDeserialize(
+  const entityid_t entityId,
+  const componentid_t componentId,
+  yyjson_val *obj
+);