diff --git a/character_window/Cargo.toml b/character_window/Cargo.toml
index c648dfd..d89f842 100644
--- a/character_window/Cargo.toml
+++ b/character_window/Cargo.toml
@@ -9,5 +9,6 @@ paste = { workspace = true }
 downcast-rs = { workspace = true }
 
 engine = { workspace = true }
+ecs = { workspace = true }
 rpg_components = { path = "../rpg_components" }
 assetpath.workspace = true
diff --git a/character_window/src/abilities/ability_right_side.rs b/character_window/src/abilities/ability_right_side.rs
index 3e236b0..db0259a 100644
--- a/character_window/src/abilities/ability_right_side.rs
+++ b/character_window/src/abilities/ability_right_side.rs
@@ -34,16 +34,18 @@ impl<A: Ability + 'static> AbilityPageRightSide<A> {
             include_str!("../../resources/abilities/right_side.xml"),
         )?;
 
-        let mut resources = world.resources.multi_mut();
-        let gui_handler = resources.get::<GuiHandler>();
-        let engine_settings = resources.get::<EngineSettings>();
-        let context = resources.get::<Context>();
-
-        let color_settings = resources
+        let color_settings = world
+            .resources
             .get::<ItemSettings>()
             .rarity_color_settings
             .clone();
 
+        let (gui_handler, engine_settings, context): (
+            &mut GuiHandler,
+            &mut EngineSettings,
+            &mut Context,
+        ) = world.resources.get_mut()?;
+
         Self::rarity_icon_background(gui_handler, &snippet, "common", color_settings.common)?;
         Self::rarity_icon_background(gui_handler, &snippet, "uncommon", color_settings.uncommon)?;
         Self::rarity_icon_background(gui_handler, &snippet, "magical", color_settings.magical)?;
@@ -98,7 +100,7 @@ impl<A: Ability + 'static> AbilityPageRightSide<A> {
                                     book.create_tooltip(world, statistics, (target_x, target_y))?;
                                 gui.enable(world)?;
                                 gui.perform_single_check(
-                                    world.resources.get_mut::<GuiHandler>(),
+                                    world.resources.get_mut()?,
                                     button_pos.0,
                                     button_pos.1,
                                 )?;
@@ -120,7 +122,6 @@ impl<A: Ability + 'static> AbilityPageRightSide<A> {
                 move |world, button| match button {
                     ControllerButton::Y => {
                         let entity = world.entity_mut(hero)?;
-                        let mut multi_mut = entity.multi_mut();
 
                         let abilities = multi_mut.get::<AbilitySlots<A>>()?;
 
@@ -226,7 +227,7 @@ impl<A: Ability + 'static> AbilityPageRightSide<A> {
                         let addon_type: Arc<Label> = addon_type_snippet.element("addon_type")?;
                         let addon_value: Arc<Label> = addon_type_snippet.element("addon_value")?;
 
-                        let gui_handler = world.resources.get_mut::<GuiHandler>();
+                        let gui_handler: &mut GuiHandler = world.resources.get_mut()?;
 
                         addon_icon.set_icon(gui_handler, &addon.icon())?;
                         addon_type.set_text(gui_handler, &format!("{}", addon.addon_type()))?;
@@ -261,7 +262,7 @@ impl<A: Ability + 'static> RightSide for AbilityPageRightSide<A> {
 
         let crafting = entity.get_component::<CraftingMaterials>()?;
 
-        let gui_handler = world.resources.get_mut::<GuiHandler>();
+        let gui_handler: &mut GuiHandler = world.resources.get_mut()?;
 
         self.update_crafting_count(gui_handler, "common", crafting.count(Rarities::Common))?;
         self.update_crafting_count(gui_handler, "uncommon", crafting.count(Rarities::Uncommon))?;
diff --git a/character_window/src/abilities/content.rs b/character_window/src/abilities/content.rs
index 8c9ce00..079931b 100644
--- a/character_window/src/abilities/content.rs
+++ b/character_window/src/abilities/content.rs
@@ -32,7 +32,7 @@ impl<A: Ability + 'static> Content<A, AbilityAddon> {
         let addon = inventory.addon_at(addon_index);
         let gui = addon.create_tooltip(world, (target_x, target_y))?;
         gui.enable(world)?;
-        gui.perform_single_check(world.resources.get_mut::<GuiHandler>(), x, y)?;
+        gui.perform_single_check(world.resources.get_mut()?, x, y)?;
 
         let window = reference.upgrade().unwrap();
         window.add_tooltip(format!("addon_{addon_index}"), gui);
@@ -47,7 +47,6 @@ impl<A: Ability + 'static> Content<A, AbilityAddon> {
         ability_page: &AbilityPage<A>,
     ) -> Result<()> {
         let entity = world.entity_mut(hero)?;
-        let mut multi_mut = entity.multi_mut();
 
         let inventory = multi_mut.get::<Inventory<A>>()?;
         let abilities = multi_mut.get::<AbilitySlots<A>>()?;
@@ -68,7 +67,7 @@ impl<A: Ability + 'static> ContentUpdate for Content<A, AbilityAddon> {
         let reference = self.reference.clone();
 
         self.update_base(world, |world, button, t, index| {
-            button.set_icon(world.resources.get_mut::<GuiHandler>(), &t.icon())?;
+            button.set_icon(world.resources.get_mut()?, &t.icon())?;
 
             button.set_custom_callback({
                 let reference = reference.clone();
@@ -136,7 +135,7 @@ impl<A: Ability + 'static> ContentUpdate for Content<A, AbilityAddon> {
     }
 
     fn select(&self, world: &mut World) -> Result<()> {
-        self.select(world.resources.get_mut::<GuiHandler>())
+        self.select(world.resources.get_mut()?)
     }
 }
 
@@ -148,7 +147,6 @@ impl<A: Ability + 'static> Content<A, AbilityBook<A>> {
         ability_page: &AbilityPage<A>,
     ) -> Result<()> {
         let entity = world.entity_mut(hero)?;
-        let mut multi_mut = entity.multi_mut();
 
         let inventory = multi_mut.get::<Inventory<A>>()?;
         let abilitiy_slots = multi_mut.get::<AbilitySlots<A>>()?;
@@ -194,17 +192,12 @@ impl<A: Ability + 'static> Content<A, AbilityBook<A>> {
                 let compare_gui =
                     selected_book.create_tooltip(world, statistics, (target_x, target_y))?;
                 compare_gui.enable(world)?;
-                gui.perform_double_check(
-                    &compare_gui,
-                    world.resources.get_mut::<GuiHandler>(),
-                    x,
-                    2,
-                )?;
+                gui.perform_double_check(&compare_gui, world.resources.get_mut()?, x, 2)?;
 
                 window.add_tooltip("active_book", compare_gui);
             }
             None => {
-                gui.perform_single_check(world.resources.get_mut::<GuiHandler>(), x, y)?;
+                gui.perform_single_check(world.resources.get_mut()?, x, y)?;
             }
         }
 
@@ -219,7 +212,7 @@ impl<A: Ability + 'static> ContentUpdate for Content<A, AbilityBook<A>> {
         let reference = self.reference.clone();
 
         self.update_base(world, |world, button, t, index| {
-            button.set_icon(world.resources.get_mut::<GuiHandler>(), &t.icon())?;
+            button.set_icon(world.resources.get_mut()?, &t.icon())?;
 
             button.set_custom_callback({
                 let reference = reference.clone();
@@ -288,6 +281,6 @@ impl<A: Ability + 'static> ContentUpdate for Content<A, AbilityBook<A>> {
     }
 
     fn select(&self, world: &mut World) -> Result<()> {
-        self.select(world.resources.get_mut::<GuiHandler>())
+        self.select(world.resources.get_mut()?)
     }
 }
diff --git a/character_window/src/abilities/mod.rs b/character_window/src/abilities/mod.rs
index 999e819..a455330 100644
--- a/character_window/src/abilities/mod.rs
+++ b/character_window/src/abilities/mod.rs
@@ -75,10 +75,11 @@ impl<A: Ability + 'static> AbilityPage<A> {
                     include_str!("../../resources/abilities/ability_tooltip.xml"),
                 )?;
 
-                let mut resources = world.resources.multi_mut();
-                let gui_handler = resources.get::<GuiHandler>();
-                let engine_settings = resources.get::<EngineSettings>();
-                let context = resources.get::<Context>();
+                let (gui_handler, engine_settings, context): (
+                    &mut GuiHandler,
+                    &mut EngineSettings,
+                    &mut Context,
+                ) = world.resources.get_mut()?;
 
                 let equip: Arc<Label> = ui.element("equip")?;
                 equip.set_info_icon(
@@ -129,10 +130,11 @@ impl<A: Ability + 'static> AbilityPage<A> {
                     include_str!("../../resources/abilities/addon_tooltip.xml"),
                 )?;
 
-                let mut resources = world.resources.multi_mut();
-                let gui_handler = resources.get::<GuiHandler>();
-                let engine_settings = resources.get::<EngineSettings>();
-                let context = resources.get::<Context>();
+                let (gui_handler, engine_settings, context): (
+                    &mut GuiHandler,
+                    &mut EngineSettings,
+                    &mut Context,
+                ) = world.resources.get_mut()?;
 
                 let equip: Arc<Label> = ui.element("socket")?;
                 equip.set_info_icon(
@@ -265,7 +267,7 @@ impl<A: Ability + 'static> Page for AbilityPage<A> {
 
         if mode.content().is_empty() {
             if let Some(close) = self.close.upgrade() {
-                close.select(world.resources.get_mut::<GuiHandler>())?;
+                close.select(world.resources.get_mut()?)?;
             }
         }
 
diff --git a/character_window/src/character/mod.rs b/character_window/src/character/mod.rs
index fa1d58d..8f4fec1 100644
--- a/character_window/src/character/mod.rs
+++ b/character_window/src/character/mod.rs
@@ -36,8 +36,7 @@ impl CharacterPage {
         let grid: Arc<Grid> = snippet.element("statistic_tab")?;
         let name: Arc<Label> = snippet.element("character_name")?;
 
-        let gui_handler = world.resources.get_mut::<GuiHandler>();
-        name.set_text(gui_handler, hero_name)?;
+        name.set_text(world.resources.get_mut()?, hero_name)?;
 
         let strength: Arc<Button> = snippet.element("strength_field")?;
         strength.set_callback({
@@ -109,7 +108,7 @@ impl CharacterPage {
         let (entity, resources) = world.entity_resources(self.hero)?;
         let statistics = entity.get_component::<Statistics>()?;
 
-        let gui_handler = resources.get_mut::<GuiHandler>();
+        let gui_handler: &mut GuiHandler = resources.get_mut()?;
 
         air_def.set_text(gui_handler, &format!("{}", statistics.air_resistance.raw()))?;
         fire_def.set_text(
@@ -163,7 +162,6 @@ impl CharacterPage {
         let intelligence: Arc<Button> = self.snippet.element("intelligence_field")?;
 
         let (entity, resources) = world.entity_resources(self.hero)?;
-        let mut resources = resources.multi_mut();
 
         let level = entity.get_component::<Level>()?;
         let attributes = entity.get_component::<Attributes>()?;
@@ -220,7 +218,6 @@ impl CharacterPage {
             let mut upgraded = false;
 
             let (entity, resources) = world.entity_resources(hero)?;
-            let mut multi_mut = entity.multi_mut();
 
             let attribute_settings = resources.get::<AttributeSettings>();
             let item_settings = resources.get::<ItemSettings>();
@@ -265,7 +262,7 @@ impl Page for CharacterPage {
 
     fn select(&self, world: &mut World) -> Result<()> {
         let strength: Arc<Button> = self.snippet.element("strength_field")?;
-        strength.select(world.resources.get_mut::<GuiHandler>())?;
+        strength.select(world.resources.get_mut()?)?;
 
         Ok(())
     }
diff --git a/character_window/src/content.rs b/character_window/src/content.rs
index 7fac871..5126207 100644
--- a/character_window/src/content.rs
+++ b/character_window/src/content.rs
@@ -43,10 +43,11 @@ impl<A: Ability + 'static, T: Send + Sync> Content<A, T> {
     {
         let base = GuiSnippet::from_str(world, include_str!("../resources/content.xml"))?;
 
-        let mut resources = world.resources.multi_mut();
-        let gui_handler = resources.get::<GuiHandler>();
-        let engine_settings = resources.get::<EngineSettings>();
-        let context = resources.get::<Context>();
+        let (gui_handler, engine_settings, context): (
+            &mut GuiHandler,
+            &mut EngineSettings,
+            &mut Context,
+        ) = world.resources.get_mut()?;
 
         let left: Arc<Button> = base.element("left")?;
         left.set_text(gui_handler, "<")?;
diff --git a/character_window/src/inventory/content.rs b/character_window/src/inventory/content.rs
index 48f047e..23a546b 100644
--- a/character_window/src/inventory/content.rs
+++ b/character_window/src/inventory/content.rs
@@ -389,7 +389,7 @@ impl<A: Ability + 'static> ContentUpdate for Content<A, Jewel> {
     }
 
     fn select(&self, world: &mut World) -> Result<()> {
-        self.select(world.resources.get_mut::<GuiHandler>())
+        self.select(world.resources.get_mut()?)
     }
 }
 
@@ -403,6 +403,6 @@ impl<A: Ability + 'static> ContentUpdate for Content<A, MapItem> {
     }
 
     fn select(&self, world: &mut World) -> Result<()> {
-        self.select(world.resources.get_mut::<GuiHandler>())
+        self.select(world.resources.get_mut()?)
     }
 }
diff --git a/character_window/src/inventory/mod.rs b/character_window/src/inventory/mod.rs
index 8242f58..56183b3 100644
--- a/character_window/src/inventory/mod.rs
+++ b/character_window/src/inventory/mod.rs
@@ -76,10 +76,11 @@ impl<A: Ability + 'static> InventoryPage<A> {
                     include_str!("../../resources/inventory/items/tooltip.xml"),
                 )?;
 
-                let mut resources = world.resources.multi_mut();
-                let gui_handler = resources.get::<GuiHandler>();
-                let engine_settings = resources.get::<EngineSettings>();
-                let context = resources.get::<Context>();
+                let (gui_handler, engine_settings, context): (
+                    &mut GuiHandler,
+                    &mut EngineSettings,
+                    &mut Context,
+                ) = world.resources.get_mut()?;
 
                 let equip: Arc<Label> = ui.element("equip")?;
                 equip.set_info_icon(
@@ -135,10 +136,11 @@ impl<A: Ability + 'static> InventoryPage<A> {
                     include_str!("../../resources/inventory/jewels/tooltip.xml"),
                 )?;
 
-                let mut resources = world.resources.multi_mut();
-                let gui_handler = resources.get::<GuiHandler>();
-                let engine_settings = resources.get::<EngineSettings>();
-                let context = resources.get::<Context>();
+                let (gui_handler, engine_settings, context): (
+                    &mut GuiHandler,
+                    &mut EngineSettings,
+                    &mut Context,
+                ) = world.resources.get_mut()?;
 
                 let socket: Arc<Label> = ui.element("socket")?;
                 socket.set_info_icon(
@@ -186,10 +188,11 @@ impl<A: Ability + 'static> InventoryPage<A> {
                     include_str!("../../resources/inventory/maps/tooltip.xml"),
                 )?;
 
-                let mut resources = world.resources.multi_mut();
-                let gui_handler = resources.get::<GuiHandler>();
-                let engine_settings = resources.get::<EngineSettings>();
-                let context = resources.get::<Context>();
+                let (gui_handler, engine_settings, context): (
+                    &mut GuiHandler,
+                    &mut EngineSettings,
+                    &mut Context,
+                ) = world.resources.get_mut()?;
 
                 let select: Arc<Label> = ui.element("select")?;
                 select.set_info_icon(
diff --git a/character_window/src/lib.rs b/character_window/src/lib.rs
index f11e9aa..04568b7 100644
--- a/character_window/src/lib.rs
+++ b/character_window/src/lib.rs
@@ -7,6 +7,7 @@ mod traits;
 
 use anyhow::Result;
 use downcast_rs::{Downcast, impl_downcast};
+use ecs::*;
 use engine::prelude::*;
 use rpg_components::{
     components::{
@@ -249,10 +250,9 @@ impl CharacterWindow {
         S: Storable,
     {
         let entity = world.entity_mut(hero)?;
-        let mut multi_mut = entity.multi_mut();
 
-        let crafting_materials = multi_mut.get::<CraftingMaterials>()?;
-        let inventory = multi_mut.get::<Inventory<A>>()?;
+        let (crafting_materials, inventory): (&mut CraftingMaterials, &mut Inventory<A>) =
+            entity.get_components_mut()?;
 
         // remove callback
         let storable = f(inventory);
@@ -287,10 +287,11 @@ impl TopLevelGui for CharacterWindow {
         self.tab_content_grid.attach(world, child, 0, 0, 1, 1)?;
         self.tab().select(world)?;
 
-        let mut resources = world.resources.multi_mut();
-        let gui_handler = resources.get::<GuiHandler>();
-        let engine_settings = resources.get::<EngineSettings>();
-        let context = resources.get::<Context>();
+        let (gui_handler, engine_settings, context): (
+            &mut GuiHandler,
+            &mut EngineSettings,
+            &mut Context,
+        ) = world.resources.get_mut()?;
 
         let close_button: Arc<Button> = self.menu_gui.element("close")?;
         close_button.set_info_icon(
diff --git a/map/Cargo.toml b/map/Cargo.toml
index 4693214..6d1477a 100644
--- a/map/Cargo.toml
+++ b/map/Cargo.toml
@@ -8,3 +8,4 @@ anyhow = { workspace = true }
 rusqlite = { workspace = true }
 assetpath = { workspace = true }
 engine = { workspace = true }
+ecs = { workspace = true }
diff --git a/map/src/map.rs b/map/src/map.rs
index 6d25c1c..340ef23 100644
--- a/map/src/map.rs
+++ b/map/src/map.rs
@@ -36,6 +36,7 @@ pub enum MapObjectType {
     Unknown,
 }
 
+#[derive(Resource)]
 pub struct Map {
     async_db: AsyncDBAccess,
 
diff --git a/map/src/mapdata.rs b/map/src/mapdata.rs
index 40b1864..e80f9e4 100644
--- a/map/src/mapdata.rs
+++ b/map/src/mapdata.rs
@@ -87,7 +87,7 @@ impl SpawnMarkerEntities {
         flag.clone_component_from::<Location>(entity)?;
         flag.clone_component_from::<BoundingBox>(entity)?;
 
-        Location::setup(flag.multi_mut())?;
+        Location::setup(&mut flag)?;
 
         Ok(flag)
     }
diff --git a/rpg_components/Cargo.toml b/rpg_components/Cargo.toml
index 4dfdb37..74334a1 100644
--- a/rpg_components/Cargo.toml
+++ b/rpg_components/Cargo.toml
@@ -10,3 +10,4 @@ assetpath = { workspace = true }
 serde = { workspace = true }
 
 engine = { workspace = true }
+ecs = { workspace = true }
diff --git a/rpg_components/src/components/item_slots.rs b/rpg_components/src/components/item_slots.rs
index e3b905b..abcfef3 100644
--- a/rpg_components/src/components/item_slots.rs
+++ b/rpg_components/src/components/item_slots.rs
@@ -6,7 +6,7 @@ use std::collections::HashMap;
 
 use crate::{
     config::{items::ItemSettings, save_game::SaveGame},
-    items::{ability_book::Ability, Item, ItemAffix, ItemSlots, ItemSystem, Rarities},
+    items::{Item, ItemAffix, ItemSlots, ItemSystem, Rarities, ability_book::Ability},
 };
 
 use super::{
@@ -125,10 +125,10 @@ macro_rules! store_item {
 macro_rules! setter {
     ($item:ident) => {
         paste::paste! {
-            fn [<set_ $item>](&mut self, $item: Option<Item>, multi_mut: &mut MultiMut<'_>) {
+            fn [<set_ $item>](&mut self, $item: Option<Item>, entity: &mut EntityObject) {
                 self.$item = $item;
 
-                self.[<apply_ $item _change>](multi_mut).unwrap();
+                self.[<apply_ $item _change>](entity).unwrap();
             }
         }
     };
@@ -154,7 +154,7 @@ pub struct ItemSlotContainer {
     amulets: [Option<Item>; AMULET_COUNT],
 
     slot_changed_callback: Option<
-        Box<dyn Fn(ItemSlots, Rarities, bool, &mut MultiMut<'_>) -> Result<()> + Send + Sync>,
+        Box<dyn Fn(ItemSlots, Rarities, bool, &mut EntityObject) -> Result<()> + Send + Sync>,
     >,
 }
 
@@ -349,7 +349,7 @@ impl ItemSlotContainer {
         self.amulets[index] = amulet;
     }
 
-    fn apply_helmet_change(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    fn apply_helmet_change(&mut self, entity: &mut EntityObject) -> Result<()> {
         self.apply_item_change(
             ItemSlots::Helmet,
             match &self.helmet {
@@ -357,11 +357,11 @@ impl ItemSlotContainer {
                 None => Rarities::Common,
             },
             self.helmet.is_some(),
-            multi_mut,
+            entity,
         )
     }
 
-    fn apply_belt_change(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    fn apply_belt_change(&mut self, entity: &mut EntityObject) -> Result<()> {
         self.apply_item_change(
             ItemSlots::Belt,
             match &self.belt {
@@ -369,11 +369,11 @@ impl ItemSlotContainer {
                 None => Rarities::Common,
             },
             self.belt.is_some(),
-            multi_mut,
+            entity,
         )
     }
 
-    fn apply_chest_plate_change(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    fn apply_chest_plate_change(&mut self, entity: &mut EntityObject) -> Result<()> {
         self.apply_item_change(
             ItemSlots::ChestPlate,
             match &self.chest_plate {
@@ -381,11 +381,11 @@ impl ItemSlotContainer {
                 None => Rarities::Common,
             },
             self.chest_plate.is_some(),
-            multi_mut,
+            entity,
         )
     }
 
-    fn apply_gloves_change(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    fn apply_gloves_change(&mut self, entity: &mut EntityObject) -> Result<()> {
         self.apply_item_change(
             ItemSlots::Gloves,
             match &self.gloves {
@@ -393,11 +393,11 @@ impl ItemSlotContainer {
                 None => Rarities::Common,
             },
             self.gloves.is_some(),
-            multi_mut,
+            entity,
         )
     }
 
-    fn apply_boots_change(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    fn apply_boots_change(&mut self, entity: &mut EntityObject) -> Result<()> {
         self.apply_item_change(
             ItemSlots::Boots,
             match &self.boots {
@@ -405,11 +405,11 @@ impl ItemSlotContainer {
                 None => Rarities::Common,
             },
             self.boots.is_some(),
-            multi_mut,
+            entity,
         )
     }
 
-    fn apply_main_hand_change(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    fn apply_main_hand_change(&mut self, entity: &mut EntityObject) -> Result<()> {
         self.apply_item_change(
             ItemSlots::MainHand,
             match &self.main_hand {
@@ -417,11 +417,11 @@ impl ItemSlotContainer {
                 None => Rarities::Common,
             },
             self.main_hand.is_some(),
-            multi_mut,
+            entity,
         )
     }
 
-    fn apply_off_hand_change(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    fn apply_off_hand_change(&mut self, entity: &mut EntityObject) -> Result<()> {
         self.apply_item_change(
             ItemSlots::OffHand,
             match &self.off_hand {
@@ -429,7 +429,7 @@ impl ItemSlotContainer {
                 None => Rarities::Common,
             },
             self.off_hand.is_some(),
-            multi_mut,
+            entity,
         )
     }
 
@@ -438,10 +438,10 @@ impl ItemSlotContainer {
         item_slot: ItemSlots,
         rarity: Rarities,
         is_some: bool,
-        multi_mut: &mut MultiMut<'_>,
+        entity: &mut EntityObject,
     ) -> Result<()> {
         if let Some(slot_changed_callback) = &self.slot_changed_callback {
-            slot_changed_callback(item_slot, rarity, is_some, multi_mut)?;
+            slot_changed_callback(item_slot, rarity, is_some, entity)?;
         }
 
         Ok(())
@@ -503,99 +503,99 @@ impl ItemSlotContainer {
 
 // setter
 impl ItemSlotContainer {
-    fn _update_helmet(&mut self, helmet: Item, multi_mut: &mut MultiMut<'_>) {
+    fn _update_helmet(&mut self, helmet: Item, entity: &mut EntityObject) {
         debug_assert!(helmet.slot == ItemSlots::Helmet);
 
-        self.set_helmet(Some(helmet), multi_mut);
+        self.set_helmet(Some(helmet), entity);
     }
 
-    pub fn unset_helmet(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    pub fn unset_helmet(&mut self, entity: &mut EntityObject) -> Result<()> {
         if self.helmet.is_some() {
-            self.set_helmet(None, multi_mut);
+            self.set_helmet(None, entity);
         }
 
         Ok(())
     }
 
-    fn update_chest(&mut self, chest: Item, multi_mut: &mut MultiMut<'_>) {
+    fn update_chest(&mut self, chest: Item, entity: &mut EntityObject) {
         debug_assert!(chest.slot == ItemSlots::ChestPlate);
 
-        self.set_chest_plate(Some(chest), multi_mut);
+        self.set_chest_plate(Some(chest), entity);
     }
 
-    pub fn unset_chest(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    pub fn unset_chest(&mut self, entity: &mut EntityObject) -> Result<()> {
         if self.chest_plate.is_some() {
-            self.set_chest_plate(None, multi_mut);
+            self.set_chest_plate(None, entity);
         }
 
         Ok(())
     }
 
-    fn _update_belt(&mut self, belt: Item, multi_mut: &mut MultiMut<'_>) {
+    fn _update_belt(&mut self, belt: Item, entity: &mut EntityObject) {
         debug_assert!(belt.slot == ItemSlots::Belt);
 
-        self.set_belt(Some(belt), multi_mut);
+        self.set_belt(Some(belt), entity);
     }
 
-    pub fn unset_belt(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    pub fn unset_belt(&mut self, entity: &mut EntityObject) -> Result<()> {
         if self.belt.is_some() {
-            self.set_belt(None, multi_mut);
+            self.set_belt(None, entity);
         }
 
         Ok(())
     }
 
-    fn _update_gloves(&mut self, gloves: Item, multi_mut: &mut MultiMut<'_>) {
+    fn _update_gloves(&mut self, gloves: Item, entity: &mut EntityObject) {
         debug_assert!(gloves.slot == ItemSlots::Gloves);
 
-        self.set_gloves(Some(gloves), multi_mut);
+        self.set_gloves(Some(gloves), entity);
     }
 
-    pub fn unset_gloves(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    pub fn unset_gloves(&mut self, entity: &mut EntityObject) -> Result<()> {
         if self.gloves.is_some() {
-            self.set_gloves(None, multi_mut);
+            self.set_gloves(None, entity);
         }
 
         Ok(())
     }
 
-    fn _update_boots(&mut self, boots: Item, multi_mut: &mut MultiMut<'_>) {
+    fn _update_boots(&mut self, boots: Item, entity: &mut EntityObject) {
         debug_assert!(boots.slot == ItemSlots::Boots);
 
-        self.set_boots(Some(boots), multi_mut);
+        self.set_boots(Some(boots), entity);
     }
 
-    pub fn unset_boots(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    pub fn unset_boots(&mut self, entity: &mut EntityObject) -> Result<()> {
         if self.boots.is_some() {
-            self.set_boots(None, multi_mut);
+            self.set_boots(None, entity);
         }
 
         Ok(())
     }
 
-    fn update_primary_hand(&mut self, primary_hand: Item, multi_mut: &mut MultiMut<'_>) {
+    fn update_primary_hand(&mut self, primary_hand: Item, entity: &mut EntityObject) {
         debug_assert!(primary_hand.slot == ItemSlots::MainHand);
 
-        self.set_main_hand(Some(primary_hand), multi_mut);
+        self.set_main_hand(Some(primary_hand), entity);
     }
 
-    pub fn unset_primary_hand(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    pub fn unset_primary_hand(&mut self, entity: &mut EntityObject) -> Result<()> {
         if self.main_hand.is_some() {
-            self.set_main_hand(None, multi_mut);
+            self.set_main_hand(None, entity);
         }
 
         Ok(())
     }
 
-    fn update_secondary_hand(&mut self, secondary_hand: Item, multi_mut: &mut MultiMut<'_>) {
+    fn update_secondary_hand(&mut self, secondary_hand: Item, entity: &mut EntityObject) {
         debug_assert!(secondary_hand.slot == ItemSlots::OffHand);
 
-        self.set_off_hand(Some(secondary_hand), multi_mut);
+        self.set_off_hand(Some(secondary_hand), entity);
     }
 
-    pub fn unset_secondary_hand(&mut self, multi_mut: &mut MultiMut<'_>) -> Result<()> {
+    pub fn unset_secondary_hand(&mut self, entity: &mut EntityObject) -> Result<()> {
         if self.off_hand.is_some() {
-            self.set_off_hand(None, multi_mut);
+            self.set_off_hand(None, entity);
         }
 
         Ok(())
@@ -716,14 +716,13 @@ impl ItemSlotContainer {
     }
 
     fn _equipment_changed(
-        multi_mut: &mut MultiMut<'_>,
+        entity: &mut EntityObject,
         item_meshes: &HashMap<ItemSlots, HashMap<Rarities, AssetMesh>>,
         slot: ItemSlots,
         rarity: Rarities,
         is_some: bool,
     ) -> Result<()> {
-        let draw = multi_mut.get::<Draw>().unwrap();
-        let location = multi_mut.get::<Location>().unwrap();
+        let (draw, location): (&mut Draw, &mut Location) = entity.get_components_mut()?;
 
         let item_name = match slot {
             ItemSlots::Helmet => "Helmet",
@@ -784,49 +783,49 @@ impl ItemSlotContainer {
         &mut self,
         item: Item,
         attributes: &Attributes,
-        multi_mut: &mut MultiMut<'_>,
+        entity: &mut EntityObject,
     ) -> Result<Option<Item>> {
         // check attribute requirements
         if attributes < &item.attributes {
             return Ok(Some(item));
         }
 
-        self.insert_unchecked(item, multi_mut)
+        self.insert_unchecked(item, entity)
     }
 
     pub fn insert_unchecked(
         &mut self,
         item: Item,
-        multi_mut: &mut MultiMut<'_>,
+        entity: &mut EntityObject,
     ) -> Result<Option<Item>> {
         Ok(match item.slot {
             ItemSlots::Helmet => {
                 let current_helmet = self.helmet.clone();
-                self._update_helmet(item, multi_mut);
+                self._update_helmet(item, entity);
 
                 current_helmet
             }
             ItemSlots::ChestPlate => {
                 let current_chest_plate = self.chest_plate.clone();
-                self.update_chest(item, multi_mut);
+                self.update_chest(item, entity);
 
                 current_chest_plate
             }
             ItemSlots::Belt => {
                 let current_belt = self.belt.clone();
-                self._update_belt(item, multi_mut);
+                self._update_belt(item, entity);
 
                 current_belt
             }
             ItemSlots::Gloves => {
                 let current_gloves = self.gloves.clone();
-                self._update_gloves(item, multi_mut);
+                self._update_gloves(item, entity);
 
                 current_gloves
             }
             ItemSlots::Boots => {
                 let current_boots = self.boots.clone();
-                self._update_boots(item, multi_mut);
+                self._update_boots(item, entity);
 
                 current_boots
             }
@@ -856,13 +855,13 @@ impl ItemSlotContainer {
             }
             ItemSlots::MainHand => {
                 let current_main_hand = self.main_hand.clone();
-                self.update_primary_hand(item, multi_mut);
+                self.update_primary_hand(item, entity);
 
                 current_main_hand
             }
             ItemSlots::OffHand => {
                 let current_off_hand = self.off_hand.clone();
-                self.update_secondary_hand(item, multi_mut);
+                self.update_secondary_hand(item, entity);
 
                 current_off_hand
             }
diff --git a/rpg_components/src/config/attributes.rs b/rpg_components/src/config/attributes.rs
index d0185a1..92e07d0 100644
--- a/rpg_components/src/config/attributes.rs
+++ b/rpg_components/src/config/attributes.rs
@@ -91,5 +91,6 @@ create_settings_container!(
         intelligence_settings: IntelligenceSettings,
         starting_attributes: StartingAttributes,
         attribute_color_settings: AttributeColorSettings,
-    }
+    },
+    Resource,
 );
diff --git a/rpg_components/src/config/experience.rs b/rpg_components/src/config/experience.rs
index 3a999ea..cbe8ac9 100644
--- a/rpg_components/src/config/experience.rs
+++ b/rpg_components/src/config/experience.rs
@@ -1,3 +1,4 @@
+use ecs::Resource;
 use engine::prelude::*;
 use serde::{Deserialize, Serialize};
 
@@ -33,7 +34,7 @@ create_settings_container!(
         mob_experience: MobExperienceSettings,
         experience_curve: ExperienceCurveSettings,
     },
-    Serialize, Deserialize,
+    Serialize, Deserialize, Resource,
 );
 
 impl ExperienceSettings {
diff --git a/rpg_components/src/config/items.rs b/rpg_components/src/config/items.rs
index 6b99977..12a656f 100644
--- a/rpg_components/src/config/items.rs
+++ b/rpg_components/src/config/items.rs
@@ -190,5 +190,6 @@ create_settings_container!(
         per_strength_stats: PerStrengthLevelStatistics,
         per_agility_stats: PerAgilityLevelStatistics,
         per_intelligence_stats: PerIntelligenceLevelStatistics,
-    }
+    },
+    Resource,
 );
diff --git a/rpg_components/src/config/save_game.rs b/rpg_components/src/config/save_game.rs
index b3167e5..0eb40fe 100644
--- a/rpg_components/src/config/save_game.rs
+++ b/rpg_components/src/config/save_game.rs
@@ -366,7 +366,7 @@ impl SaveGame {
         let mut entity_object = AssetHandler::create(world).empty_entity();
 
         entity_object.insert_component(Draw::new(Vec::new()));
-        entity_object.insert_component(Audio::new(world.resources.get_mut::<Context>(), None)?);
+        entity_object.insert_component(Audio::new(world.resources.get_mut()?, None)?);
         Location::new_and_setup(&mut entity_object)?;
 
         let experience_settings = world.resources.get::<ExperienceSettings>();
diff --git a/rpg_components/src/items/ability_addon.rs b/rpg_components/src/items/ability_addon.rs
index 6d855b5..5b2eb9c 100644
--- a/rpg_components/src/items/ability_addon.rs
+++ b/rpg_components/src/items/ability_addon.rs
@@ -248,7 +248,7 @@ impl AbilityAddon {
     pub fn create_tooltip(&self, world: &mut World, position: (i32, i32)) -> Result<Tooltip> {
         let gui = GuiBuilder::from_str(world, include_str!("../../resources/addon_snippet.xml"))?;
 
-        let gui_handler = world.resources.get_mut::<GuiHandler>();
+        let gui_handler: &mut GuiHandler = world.resources.get_mut()?;
 
         let icon: Arc<Icon> = gui.element("addon_icon")?;
         let rarity_label: Arc<Label> = gui.element("rarity_label")?;
diff --git a/rpg_components/src/items/ability_book.rs b/rpg_components/src/items/ability_book.rs
index 5016af7..8ef6ab3 100644
--- a/rpg_components/src/items/ability_book.rs
+++ b/rpg_components/src/items/ability_book.rs
@@ -304,7 +304,7 @@ impl<A: Ability> AbilityBook<A> {
     ) -> Result<Tooltip> {
         let gui = GuiBuilder::from_str(world, include_str!("../../resources/book_snippet.xml"))?;
 
-        let gui_handler = world.resources.get_mut::<GuiHandler>();
+        let gui_handler: &mut GuiHandler = world.resources.get_mut()?;
 
         let ability_name: Arc<Label> = gui.element("ability_name")?;
         let rarity_label: Arc<Label> = gui.element("rarity_label")?;
diff --git a/rpg_components/src/items/item_system.rs b/rpg_components/src/items/item_system.rs
index 5f50c47..8b5a3c2 100644
--- a/rpg_components/src/items/item_system.rs
+++ b/rpg_components/src/items/item_system.rs
@@ -1,5 +1,6 @@
 use anyhow::Result;
 use assetpath::AssetPath;
+use ecs::resources::Resource;
 use engine::prelude::*;
 
 use std::collections::HashMap;
@@ -51,6 +52,8 @@ pub struct ItemSystem<A: Ability> {
     abilities: Vec<A>,
 }
 
+impl<A: Ability + 'static> Resource for ItemSystem<A> {}
+
 impl<A: Ability> ItemSystem<A> {
     pub fn new(
         world: &mut World,
diff --git a/rpg_components/src/items/jewel.rs b/rpg_components/src/items/jewel.rs
index 78a4b52..55098df 100644
--- a/rpg_components/src/items/jewel.rs
+++ b/rpg_components/src/items/jewel.rs
@@ -67,7 +67,7 @@ impl Jewel {
         let inspector_snippet: Arc<GuiBuilder> =
             GuiBuilder::from_str(world, include_str!("../../resources/jewel_tooltip.xml"))?;
 
-        let gui_handler = world.resources.get_mut::<GuiHandler>();
+        let gui_handler: &mut GuiHandler = world.resources.get_mut()?;
 
         let main_grid: Arc<Grid> = inspector_snippet.element("main_grid")?;
         main_grid.change_position_unscaled(gui_handler, position.0, position.1)?;