Added a create entity to ecs native module

Author: Gallasko

benchmark/script_performance.cc

@@ -18,6 +18,8 @@
 
 #include "../test/mocklogger.h"
 
+#include "2D/position.h"
+
 namespace pg
 {
     namespace benchmark
@@ -156,6 +158,8 @@ namespace pg
             for (int count : smallCounts)
             {
                 EntitySystem ecs("bench_native");
+                ecs.createSystem<PositionComponentSystem>();
+
                 VM vm;
                 ecs.setupVm(vm);
 

src/Engine/ECS/ecsnativemodule.h

@@ -13,6 +13,7 @@ namespace pg
      *
      * Provides native functions for working with the ECS from scripts:
      *
+     * - createEntity(name?): Create a new entity with an optional name, returns entity table
      * - removeEntity(entityId or entityInstance): Remove an entity from the ECS
      * - getEntity(entityId): Get entity data as a table
      * - getEntities(componentName): Get all entities with the specified component as a table of entity tables
@@ -400,6 +401,36 @@ namespace pg
                 throw std::runtime_error("removeEntity expects an integer id or an entity instance");
             });
 
+            addNativeFunction("createEntity", [ecsRefCopy](VM* vm, int argCount, Value* args) -> Value {
+                if (argCount > 1)
+                {
+                    throw std::runtime_error("createEntity expects 0 or 1 arguments (optional entity name)");
+                }
+
+                EntityRef entityRef;
+
+                if (argCount == 1)
+                {
+                    if (not IS_STRING(args[0]))
+                    {
+                        throw std::runtime_error("createEntity expects entity name to be a string");
+                    }
+
+                    auto entityName = vm->asString(args[0]);
+                    entityRef = ecsRefCopy->createEntity(entityName);
+
+                    LOG_MILE("Ecs Compiled Module", "Created entity with name '" << entityName << "' and id " << entityRef->id);
+                }
+                else
+                {
+                    entityRef = ecsRefCopy->createEntity();
+                    LOG_MILE("Ecs Compiled Module", "Created entity with id " << entityRef->id);
+                }
+
+                // Return the serialized entity table (similar to getEntity)
+                return serializeEntityToTable(vm, ecsRefCopy, entityRef.entity);
+            });
+
             addNativeFunction("getEntity", [ecsRefCopy](VM* vm, int argCount, Value* args) -> Value {
                 if (argCount != 1)
                 {

test/bench/bench_06_native_metamethod.pg

@@ -2,30 +2,30 @@
 // This tests the performance of calling native __get/__set from C++
 // Create some test entities to use real component proxies
 
-// import "ecs"
+import "ecs"
 // import "sys"
 
 // // Create test entities with PositionComponent
 // // var count = 2000
 
-// for (var i = 0; i < count; i = i + 1)
-// {
-//     var entity = ecs.createEntity()
-//     entity.attachComp("Position", 100, 200, 0, 50, 50, 0, true, true)
-// }
+for (var i = 0; i < count; i = i + 1)
+{
+    var entity = createEntity()
+    entity.attachComp("Position", 100, 200, 0, 50, 50, 0, true, true)
+}
 
-// // Benchmark: iterate using sys.getEntities (returns proxies)
-// var entities = sys.getEntities("Position")
+// Benchmark: iterate using sys.getEntities (returns proxies)
+var entities = getEntities("Position")
 
-// for (var entity : entities)
-// {
-//     var pos = entity.PositionComponent
+for (var entity : entities)
+{
+    var pos = entity.PositionComponent
 
-//     // Read properties via native __get
-//     var x = pos.x
-//     var y = pos.y
+    // Read properties via native __get
+    var x = pos.x
+    var y = pos.y
 
-//     // Write properties via native __set
-//     pos.x = x + 1
-//     pos.y = y + 1
-// }
+    // Write properties via native __set
+    pos.x = x + 1
+    pos.y = y + 1
+}