Add Consumable Items (#62)

Changes:
 + add Quantity value for items
 + add plus and minus buttons for list
 + add roll button if item contains formulas
 + decrease quantity by 1 if rolled

source/module/sheets/M5CharacterSheet.ts

@@ -97,6 +97,60 @@ export default class M5CharacterSheet extends ActorSheet {
 			item.sheet.render(true);
 		});
 
+		html.find(".quantity-increase").on("click", async (event) => {
+			let row = event.target.parentElement;
+			let itemId = row.dataset["item"];
+			while (!itemId) {
+				row = row.parentElement;
+				if (!row) return;
+				itemId = row.dataset["item"];
+			}
+
+			const context = this.actor as any;
+			const item = context.items.get(itemId);
+			if (!item.system.quantity) {
+				item.system.quantity = 0;
+			}
+			item.system.quantity += 1;
+			this.render();
+		});
+
+		html.find(".quantity-decrease").on("click", async (event) => {
+			let row = event.target.parentElement;
+			let itemId = row.dataset["item"];
+			while (!itemId) {
+				row = row.parentElement;
+				if (!row) return;
+				itemId = row.dataset["item"];
+			}
+
+			const context = this.actor as any;
+			const item = context.items.get(itemId);
+			if (item.system.quantity > 0) {
+				item.system.quantity -= 1;
+			}
+			this.render();
+		});
+
+		html.find(".roll-consumable-item").on("click", async (event) => {
+			let row = event.target.parentElement;
+			let itemId = row.dataset["item"];
+			while (!itemId) {
+				row = row.parentElement;
+				if (!row) return;
+				itemId = row.dataset["item"];
+			}
+
+			const context = this.actor as any;
+			const item = context.items.get(itemId);
+			if (item.system.quantity > 0) {
+				item.system.quantity -= 1;
+			}
+
+			await item.roll();
+			this.render();
+		});
+
 		html.find(".item-delete").on("click", async (event) => {
 			let row = event.target.parentElement;
 			let itemId = row.dataset["item"];