Minor allocation optimization

annotations/src/main/java/mindustry/annotations/entity/EntityProcess.java

@@ -1,6 +1,5 @@
 package mindustry.annotations.entity;
 
-import arc.*;
 import arc.files.*;
 import arc.func.*;
 import arc.struct.*;
@@ -520,7 +519,7 @@ public class EntityProcess extends BaseProcessor{
                     //add free code to remove methods - always at the end
                     //this only gets called next frame.
                     if(first.name().equals("remove") && ann.pooled()){
-                        mbuilder.addStatement("$T.app.post(() -> $T.free(this))", Core.class, Pools.class);
+                        mbuilder.addStatement("mindustry.gen.Groups.queueFree(($T)this)", Poolable.class);
                     }
 
                     builder.addMethod(mbuilder.build());
@@ -587,6 +586,17 @@ public class EntityProcess extends BaseProcessor{
             //write clear
             groupsBuilder.addMethod(groupClear.build());
 
+            //add method for pool storage
+            groupsBuilder.addField(FieldSpec.builder(ParameterizedTypeName.get(Seq.class, Poolable.class), "freeQueue", Modifier.PRIVATE, Modifier.STATIC).initializer("new Seq<>()").build());
+
+            //method for freeing things
+            MethodSpec.Builder groupFreeQueue = MethodSpec.methodBuilder("queueFree")
+                .addModifiers(Modifier.PUBLIC, Modifier.STATIC)
+                .addParameter(Poolable.class, "obj")
+                .addStatement("freeQueue.add(obj)");
+
+            groupsBuilder.addMethod(groupFreeQueue.build());
+
             //add method for resizing all necessary groups
             MethodSpec.Builder groupResize = MethodSpec.methodBuilder("resize")
                 .addParameter(TypeName.FLOAT, "x").addParameter(TypeName.FLOAT, "y").addParameter(TypeName.FLOAT, "w").addParameter(TypeName.FLOAT, "h")
@@ -595,6 +605,11 @@ public class EntityProcess extends BaseProcessor{
             MethodSpec.Builder groupUpdate = MethodSpec.methodBuilder("update")
                 .addModifiers(Modifier.PUBLIC, Modifier.STATIC);
 
+            //free everything pooled at the start of each updaet
+            groupUpdate
+                .addStatement("for($T p : freeQueue) $T.free(p)", Poolable.class, Pools.class)
+                .addStatement("freeQueue.clear()");
+
             //method resize
             for(GroupDefinition group : groupDefs){
                 if(group.spatial){