Inventory (WIP part I)

src/items/Inventory.cpp

@@ -0,0 +1,74 @@
+#include "Inventory.h"
+
+Inventory::Inventory(size_t size) : slots(size) {
+}
+
+ItemStack& Inventory::getSlot(size_t index) {
+    return slots[index];
+}
+
+size_t Inventory::findEmptySlot(size_t begin, size_t end) const {
+    end = std::min(slots.size(), end);
+    for (size_t i = begin; i < end; i++) {
+        if (slots[i].isEmpty()) {
+            return i;
+        }
+    }
+    return npos;
+}
+
+size_t Inventory::findSlotByItem(itemid_t id, size_t begin, size_t end) {
+    end = std::min(slots.size(), end);
+    for (size_t i = begin; i < end; i++) {
+        if (slots[i].getItemId() == id) {
+            return i;
+        }
+    }
+    return npos;
+}
+
+void Inventory::move(
+    ItemStack& item, 
+    const ContentIndices* indices, 
+    size_t begin, 
+    size_t end) 
+{
+    end = std::min(slots.size(), end);
+    for (size_t i = begin; i < end && !item.isEmpty(); i++) {
+        ItemStack& slot = slots[i];
+        if (slot.accepts(item)) {
+            slot.move(item, indices);
+        }
+    }
+}
+
+void Inventory::read(const dynamic::Map* src) {
+    auto slotsarr = src->list("slots");
+    size_t slotscount = std::min(slotsarr->size(), slots.size());
+    for (size_t i = 0; i < slotscount; i++) {
+        auto item = slotsarr->map(i);
+        itemid_t id = item->getInt("id", ITEM_EMPTY);
+        itemcount_t count = item->getInt("count", 0);
+        auto& slot = slots[i];
+        slot.set(ItemStack(id, count)); 
+    }
+}
+
+std::unique_ptr<dynamic::Map> Inventory::write() const {
+    auto map = std::make_unique<dynamic::Map>();
+    auto& slotsarr = map->putList("slots");
+    for (size_t i = 0; i < slots.size(); i++) {
+        auto& item = slots[i];
+        itemid_t id = item.getItemId();
+        itemcount_t count = item.getCount();
+
+        auto& slotmap = slotsarr.putMap();
+        slotmap.put("id", id);
+        if (count) {
+            slotmap.put("count", count);
+        }
+    }
+    return map;
+}
+
+const size_t Inventory::npos = -1;