Properly link flecs library

engine/libs/flecs/examples/cpp/reflection/query_to_json/include/query_to_json.h

@@ -0,0 +1,16 @@
+#ifndef QUERY_TO_JSON_H
+#define QUERY_TO_JSON_H
+
+/* This generated file contains includes for project dependencies */
+#include "query_to_json/bake_config.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

engine/libs/flecs/examples/cpp/reflection/query_to_json/include/query_to_json/bake_config.h

@@ -0,0 +1,24 @@
+/*
+                                   )
+                                  (.)
+                                  .|.
+                                  | |
+                              _.--| |--._
+                           .-';  ;`-'& ; `&.
+                          \   &  ;    &   &_/
+                           |"""---...---"""|
+                           \ | | | | | | | /
+                            `---.|.|.|.---'
+
+ * This file is generated by bake.lang.c for your convenience. Headers of
+ * dependencies will automatically show up in this file. Include bake_config.h
+ * in your main project file. Do not edit! */
+
+#ifndef QUERY_TO_JSON_BAKE_CONFIG_H
+#define QUERY_TO_JSON_BAKE_CONFIG_H
+
+/* Headers of public dependencies */
+#include <flecs.h>
+
+#endif
+

engine/libs/flecs/examples/cpp/reflection/query_to_json/project.json

@@ -0,0 +1,11 @@
+{
+    "id": "query_to_json",
+    "type": "application",
+    "value": {
+        "use": [
+            "flecs"
+        ],
+        "language": "c++",
+        "public": false
+    }
+}

engine/libs/flecs/examples/cpp/reflection/query_to_json/src/main.cpp

@@ -0,0 +1,94 @@
+#include <query_to_json.h>
+#include <iostream>
+
+struct Position {
+    float x;
+    float y;
+};
+
+struct Velocity {
+    float x;
+    float y;
+};
+
+struct Mass {
+    float value;
+};
+
+int main(int, char *[]) {
+    flecs::world ecs;
+
+    // Register components with reflection data
+    ecs.component<Position>()
+        .member<float>("x")
+        .member<float>("y");
+
+    ecs.component<Velocity>()
+        .member<float>("x")
+        .member<float>("y");
+
+    ecs.component<Mass>()
+        .member<float>("value");
+
+    ecs.entity("a").set<Position>({10, 20}).set<Velocity>({1, 2});
+    ecs.entity("b").set<Position>({20, 30}).set<Velocity>({2, 3});
+    ecs.entity("c").set<Position>({30, 40}).set<Velocity>({3, 4}).set<Mass>({10});
+    ecs.entity("d").set<Position>({30, 40}).set<Velocity>({4, 5}).set<Mass>({20});
+
+    // Query for components
+    flecs::query<Position, const Velocity> q = 
+        ecs.query<Position, const Velocity>();
+
+    // Serialize query to JSON. Note that this works for any iterable object,
+    // including filters & rules.
+    std::cout << q.iter().to_json().c_str() << "\n";
+
+    // Iterator returns 2 sets of results, one for each table.
+
+    // {
+    //   "ids": ["Position", "Velocity"],
+    //   "results": [{
+    //     "ids": ["Position", "Velocity"],
+    //     "sources": [0, 0],
+    //     "is_set": [true, true],
+    //     "entities": ["a", "b"],
+    //     "values": [
+    //       [{
+    //         "x": 10.00,
+    //         "y": 20.00
+    //       }, {
+    //         "x": 20.00,
+    //         "y": 30.00
+    //       }],
+    //       [{
+    //         "x": 1.00,
+    //         "y": 2.00
+    //       }, {
+    //         "x": 2.00,
+    //         "y": 3.00
+    //       }]
+    //     ]
+    //   }, {
+    //     "ids": ["Position", "Velocity"],
+    //     "sources": [0, 0],
+    //     "is_set": [true, true],
+    //     "entities": ["c", "d"],
+    //     "values": [
+    //       [{
+    //         "x": 30.00,
+    //         "y": 40.00
+    //       }, {
+    //         "x": 30.00,
+    //         "y": 40.00
+    //       }],
+    //       [{
+    //         "x": 3.00,
+    //         "y": 4.00
+    //       }, {
+    //         "x": 4.00,
+    //         "y": 5.00
+    //       }]
+    //     ]
+    //   }]
+    // }
+}