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 #include "Item.h"
  11
  12 #include <algorithm>
  13
  14
  15 namespace common {
  16
  17 Inventory::Inventory() {
  18
  19 }
  20
  21 bool Inventory::Add(const Item *item, int count) {
  22         if (count > 99) return false;
  23
  24         Entry *entry(FindItem(item));
  25         if (entry) {
  26                 if (entry->count + count > 99) {
  27                         return false;
  28                 } else {
  29                         entry->count += count;
  30                         return true;
  31                 }
  32         } else {
  33                 for (int i(0); i < MaxItems(); ++i) {
  34                         if (SloteFree(i)) {
  35                                 entries[i].item = item;
  36                                 entries[i].count = count;
  37                                 return true;
  38                         }
  39                 }
  40                 return false;
  41         }
  42 }
  43
  44 void Inventory::Remove(const Item *item, int count) {
  45         Entry *entry(FindItem(item));
  46         if (!entry) return;
  47
  48         if (entry->count <= count) {
  49                 entry->item = 0;
  50                 entry->count = 0;
  51         } else {
  52                 entry->count -= count;
  53         }
  54 }
  55
  56 Inventory::Entry *Inventory::FindItem(const Item *item) {
  57         for (int i(0); i < MaxItems(); ++i) {
  58                 if (item == ItemAt(i)) {
  59                         return entries + i;
  60                 }
  61         }
  62         return 0;
  63 }
  64
  65 bool Inventory::SloteFree(int offset) const {
  66         return !ItemAt(offset);
  67 }
  68
  69
  70 void Inventory::Sort() {
  71         std::sort(entries, entries + 96, Entry::Less);
  72 }
  73
  74 bool Inventory::Entry::Less(const Entry &lhs, const Entry &rhs) {
  75         if (lhs.item) {
  76                 if (rhs.item) {
  77                         return Item::Less(*lhs.item, *rhs.item);
  78                 } else {
  79                         return true;
  80                 }
  81         } else {
  82                 return false;
  83         }
  84 }
  85
  86 }