-LinearLayout proggress:

*EntityTemplate.getComponent
 *Adding/removing components for Entitites
-better code for adding components

source/ecs/entity.d

@@ -45,6 +45,7 @@ export struct EntityTemplate
 
     T* getComponent(T)()
     {
-        return cast(T*)(entity_data.ptr + info.deltas[T.component_id]);
+        version(LinearLayout)return cast(T*)(entity_data.ptr + info.tmpl_deltas[T.component_id]);
+        else return cast(T*)(entity_data.ptr + info.deltas[T.component_id]);
     }
 }

source/ecs/id_manager.d

@@ -31,7 +31,7 @@ struct IDManager
 
     void update(ref Entity entity)
     {
-        m_ids_array[entity.id.id].entity = &entity;
+        if(entity.id.counter == m_ids_array[entity.id.id].counter)m_ids_array[entity.id.id].entity = &entity;
     }
 
     export Entity* getEntityPointer(EntityID id)

source/ecs/manager.d

@@ -156,7 +156,9 @@ class EntityManager
                     }
                     else
                     {
-                        ret ~= "types[" ~ i.to!string ~ "][] array" ~ req.to!string ~ " = (cast(types[" ~ i.to!string ~ "]*)(cast(void*)block + info.deltas[types[" ~ i.to!string ~ "].component_id]))[0..block.entities_count];";
+                        ret ~= "types[" ~ i.to!string ~ "][] array" ~ req.to!string ~ " = (cast(types["
+                            ~ i.to!string ~ "]*)(cast(void*)block + info.deltas[types["
+                            ~ i.to!string ~ "].component_id]))[0..block.entities_count];";
                         req++;
                     }
                 }
@@ -235,7 +237,8 @@ class EntityManager
                                     pointer = null;
                             }*/
                             EntityInfo* info = block.type_info;
-                            Entity[] id_array = (cast(Entity*)block.dataBegin())[0..block.entities_count];
+                            Entity[] id_array = (cast(Entity*) block.dataBegin())[0
+                                .. block.entities_count];
                             mixin(genArrays());
                             foreach (i; 0 .. block.entities_count)
                             {
@@ -710,11 +713,27 @@ class EntityManager
         new_entity.id = entity.id;
         new_entity.updateID();
 
+        version (LinearLayout)
+        {
+            static if (EntityID.sizeof == 8)
+                uint ind = cast(uint)((cast(void*) entity - block.dataBegin()) >> 3);
+            else
+                uint ind = cast(uint)((cast(void*) entity - block.dataBegin()) / EntityID.sizeof());
+            foreach (comp; new_info.components)
+            {
+                uint comp_size = components[comp].size;
+                memcpy(cast(void*) new_block + new_info.deltas[comp] + new_block.entities_count * comp_size,
+                        cast(void*) block + info.deltas[comp] + ind * comp_size, comp_size);
+            }
+        }
+        else
+        {
             foreach (comp; new_info.components)
             {
                 memcpy(cast(void*) new_entity + new_info.deltas[comp],
                         cast(void*) entity + info.deltas[comp], components[comp].size);
             }
+        }
 
         new_block.entities_count++;
 
@@ -817,42 +836,74 @@ class EntityManager
         Entity* new_entity = cast(Entity*) start;
         new_entity.id = entity.id;
         new_entity.updateID();
-        new_block.entities_count++;
 
         //removeEntityNoID(entity, block);
 
         j = 0;
         k = 0;
+        version (LinearLayout)
+        {
+            static if (EntityID.sizeof == 8)
+                uint ind = cast(uint)((cast(void*) entity - block.dataBegin()) >> 3);
+            else
+                uint ind = cast(uint)((cast(void*) entity - block.dataBegin()) / EntityID.sizeof());
             foreach (ref id; ids)
             {
+                void* dst = cast(void*) new_block + new_info.deltas[id] + (
+                        new_block.entities_count + new_block.added_count) * components[id].size;
+                uint size = components[id].size;
                 if (k >= new_ids.length)
                 {
-                memcpy(cast(void*) new_entity + new_info.deltas[id],
+                    memcpy(dst, cast(void*) block + info.deltas[id] + ind * size, size);
-                        cast(void*) entity + info.deltas[info.components[j]],
-                        components[info.components[j]].size); //id = info.components[j++];
                     j++;
                 }
                 else if (j >= info.components.length)
                 {
-                memcpy(cast(void*) new_entity + new_info.deltas[id],
+                    memcpy(dst, data_pointers[k], size);
-                        data_pointers[k], components[new_ids[k]].size); //id = new_ids[k++];
                     k++;
                 }
                 else if (id == new_ids[k])
                 {
-                memcpy(cast(void*) new_entity + new_info.deltas[id],
+                    memcpy(dst, data_pointers[k], size);
-                        data_pointers[k], components[new_ids[k]].size); //id = new_ids[k++];
                     k++;
                 }
                 else
                 {
-                memcpy(cast(void*) new_entity + new_info.deltas[id],
+                    memcpy(dst, cast(void*) block + info.deltas[id] + ind * size, size);
-                        cast(void*) entity + info.deltas[info.components[j]],
-                        components[info.components[j]].size); //id = info.components[j++];
                     j++;
                 }
             }
+        }
+        else
+        {
+            foreach (ref id; ids)
+            {
+                void* dst = cast(void*) new_entity + new_info.deltas[id];
+                uint size = components[id].size;
+                if (k >= new_ids.length)
+                {
+                    memcpy(dst, cast(void*) entity + info.deltas[id], size);
+                    j++;
+                }
+                else if (j >= info.components.length)
+                {
+                    memcpy(dst, data_pointers[k], size);
+                    k++;
+                }
+                else if (id == new_ids[k])
+                {
+                    memcpy(dst, data_pointers[k], size);
+                    k++;
+                }
+                else
+                {
+                    memcpy(dst, cast(void*) entity + info.deltas[id], size);
+                    j++;
+                }
+            }
+        }
 
+        new_block.entities_count++;
         removeEntityNoID(entity, block);
     }
 

tests/tests.d

@@ -79,10 +79,10 @@ int main()
 		__gshared ushort component_id;
 		uint gg = 7; //good game
 		uint bg = 8; //bad game
-		ulong a;
+		ulong a = 9;
-		ulong b;
+		ulong b = 10;
-		ulong c;
+		ulong c = 11;
-		ulong g;
+		ulong g = 12;
 
 		static void serializeComponent(ref TestComp comp, SerializeVector output)
 		{
@@ -260,10 +260,12 @@ int main()
 
 	time = MonoTime.currTime;
 
-	ushort[3] ids = [TestComp2.component_id, TestComp.component_id, TestComp4.component_id];
+	//ushort[3] ids = [TestComp2.component_id, TestComp.component_id, TestComp4.component_id];
+	ushort[2] ids = [TestComp2.component_id, TestComp.component_id];
 	EntityTemplate* tmpl = gEM.allocateTemplate(ids);
 
-	ushort[3] ids2 = [TestComp3.component_id, TestComp.component_id, TestComp4.component_id];
+	//ushort[3] ids2 = [TestComp3.component_id, TestComp.component_id, TestComp4.component_id];
+	ushort[2] ids2 = [TestComp3.component_id, TestComp.component_id];
 	EntityTemplate* tmpl2 = gEM.allocateTemplate(ids2);
 	//writeln(tmpl.info.components[]);
 	//*cast(EntityID*) tmpl.entity_data.ptr = EntityID(1, 1);
@@ -286,7 +288,7 @@ int main()
 
 	EntityID[1000] idss;
 
-	/*foreach (i; 0 .. 1_000)
+	foreach (i; 0 .. 1_000)
 	{
 		gEM.begin();
 		foreach (j; 0 .. 1_000)
@@ -294,7 +296,7 @@ int main()
 		foreach (j; 0 .. 1_000)
 			gEM.removeEntity(idss[j]);
 		gEM.end();
-	}*/
+	}
 
 	dur = (MonoTime.currTime - time).total!"usecs";
 	writeln("Entities adding: ", dur, " usecs");
@@ -375,6 +377,7 @@ int main()
 	writeEntityComponents(gEM.getEntity(entity.id));
 
 	gEM.removeComponents!(TestComp)(entity.id);
+	gEM.addComponents(entity.id, TestComp());
 
 	gEM.begin();
 	gEM.update();