src/common/Inventory.cpp

   1 /*
   2  * Inventory.cpp
   3  *
   4  *  Created on: Aug 9, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "Inventory.h"
   9
  10 namespace common {
  11
  12 Inventory::Inventory() {
  13
  14 }
  15
  16 bool Inventory::Add(const Item *item, int count) {
  17         if (count > 99) return false;
  18
  19         Entry *entry(FindItem(item));
  20         if (entry) {
  21                 if (entry->count + count > 99) {
  22                         return false;
  23                 } else {
  24                         entry->count += count;
  25                         return true;
  26                 }
  27         } else {
  28                 for (int i(0); i < MaxItems(); ++i) {
  29                         if (SloteFree(i)) {
  30                                 entries[i].item = item;
  31                                 entries[i].count = count;
  32                                 return true;
  33                         }
  34                 }
  35                 return false;
  36         }
  37 }
  38
  39 void Inventory::Remove(const Item *item, int count) {
  40         Entry *entry(FindItem(item));
  41         if (!entry) return;
  42
  43         if (entry->count <= count) {
  44                 entry->item = 0;
  45                 entry->count = 0;
  46         } else {
  47                 entry->count -= count;
  48         }
  49 }
  50
  51 Inventory::Entry *Inventory::FindItem(const Item *item) {
  52         for (int i(0); i < MaxItems(); ++i) {
  53                 if (item == ItemAt(i)) {
  54                         return entries + i;
  55                 }
  56         }
  57         return 0;
  58 }
  59
  60 bool Inventory::SloteFree(int offset) const {
  61         return !ItemAt(offset);
  62 }
  63
  64 }