Improve how capacity consumption calculations are performed

module/documents/Item/GenericItem.mjs

@@ -1 +1,12 @@
-export class DotDungeonItem extends Item {};
+export class DotDungeonItem extends Item {
+	get usedCapacity() {
+		let capacity = 0;
+		if (this.system.uses_inventory_slot && this.system.quantity > 0) {
+			capacity++;
+		};
+		if (this.system.quantity_affects_used_capacity) {
+			capacity *= this.system.quantity;
+		};
+		return capacity;
+	};
+};

module/documents/Item/Material.mjs

@@ -0,0 +1,9 @@
+import { DotDungeonItem } from "./GenericItem.mjs";
+
+export class Material extends DotDungeonItem {
+	get usedCapacity() {
+		let affects = game.settings.get(`dotdungeon`, `materialsAffectCapacity`);
+		console.log(`materialsAffectCapacity =`, affects)
+		return affects ? super.usedCapacity : 0;
+	};
+};

module/documents/Item/_proxy.mjs

@@ -1,8 +1,10 @@
 import { DotDungeonItem } from "./GenericItem.mjs";
 import { Aspect } from "./Aspect.mjs";
+import { Material } from "./Material.mjs";
 
 const classes = {
 	aspect: Aspect,
+	material: Material,
 };
 
 const defaultClass = DotDungeonItem;

module/models/Item/CommonItemData.mjs

@@ -14,6 +14,10 @@ export class CommonItemData extends foundry.abstract.TypeDataModel {
 				initial: true,
 				nullable: false,
 			}),
+			quantity_affects_used_capacity: new fields.BooleanField({
+				initial: true,
+				nullable: false,
+			}),
 			buy: new fields.NumberField({
 				initial: null,
 				nullable: true,

module/settings/world_settings.mjs

@@ -9,6 +9,16 @@ export default function() {
 		requiresReload: false,
 	});
 
+	game.settings.register(`dotdungeon`, `materialsAffectCapacity`, {
+		name: `dotdungeon.settings.materialsAffectCapacity.name`,
+		hint: `dotdungeon.settings.materialsAffectCapacity.description`,
+		scope: `world`,
+		config: true,
+		type: Boolean,
+		default: true,
+		requiresReload: false,
+	});
+
 	game.settings.register(`dotdungeon`, `resourcesOrSupplies`, {
 		name: `dotdungeon.settings.resourcesOrSupplies.name`,
 		hint: `dotdungeon.settings.resourcesOrSupplies.description`,

module/sheets/Actors/PC/PlayerSheetV2.mjs

@@ -144,7 +144,7 @@ export class PlayerSheetv2 extends GenericActorSheet {
 	get #inventoryCapacity() {
 		return {
 			used: this.actor.items
-				.reduce((sum, i) => sum + (i.system.uses_inventory_slot ? i.system.quantity : 0), 0),
+				.reduce((sum, i) => sum + i.usedCapacity, 0),
 			max: this.actor.system.inventory_slots,
 		};
 	};