src/item.c

   1 #include <stdlib.h>
   2 #include "item.h"
   3
   4 void item_stack_initialize(ItemStack *stack)
   5 {
   6         stack->type = ITEM_NONE;
   7         stack->count = 1;
   8         stack->data = NULL;
   9
  10         if (item_defs[stack->type].create)
  11                 item_defs[stack->type].create(stack);
  12 }
  13
  14 void item_stack_destroy(ItemStack *stack)
  15 {
  16         if (item_defs[stack->type].delete)
  17                 item_defs[stack->type].delete(stack);
  18
  19         if (stack->data) {
  20                 free(stack->data);
  21                 stack->data = NULL;
  22         }
  23 }
  24
  25 void item_stack_set(ItemStack *stack, ItemType type, u32 count, Blob buffer)
  26 {
  27         item_stack_destroy(stack);
  28
  29         stack->type = type;
  30         stack->count = count;
  31         stack->data = item_defs[stack->type].data_size > 0 ?
  32                 malloc(item_defs[stack->type].data_size) : NULL;
  33
  34         if (item_defs[stack->type].create)
  35                 item_defs[stack->type].create(stack);
  36
  37         if (item_defs[stack->type].deserialize)
  38                 item_defs[stack->type].deserialize(&buffer, stack->data);
  39 }
  40
  41 void item_stack_serialize(ItemStack *stack, SerializedItemStack *serialized)
  42 {
  43         serialized->type = stack->type;
  44         serialized->count = stack->count;
  45         serialized->data = (Blob) {0, NULL};
  46
  47         if (item_defs[stack->type].serialize)
  48                 item_defs[stack->type].serialize(&serialized->data, stack->data);
  49 }
  50
  51 void item_stack_deserialize(ItemStack *stack, SerializedItemStack *serialized)
  52 {
  53         ItemType type = serialized->type;
  54
  55         if (type >= COUNT_ITEM)
  56                 type = ITEM_UNKNOWN;
  57
  58         item_stack_set(stack, type, serialized->count, serialized->data);
  59 }
  60
  61 ItemDef item_defs[COUNT_ITEM] = {
  62         // unknown
  63         {
  64                 .stackable = false,
  65                 .data_size = 0,
  66                 .create = NULL,
  67                 .delete = NULL,
  68                 .serialize = NULL,
  69                 .deserialize = NULL,
  70         },
  71         // none
  72         {
  73                 .stackable = false,
  74                 .data_size = 0,
  75                 .create = NULL,
  76                 .delete = NULL,
  77                 .serialize = NULL,
  78                 .deserialize = NULL,
  79         },
  80         // pickaxe
  81         {
  82                 .stackable = false,
  83                 .data_size = 0,
  84                 .create = NULL,
  85                 .delete = NULL,
  86                 .serialize = NULL,
  87                 .deserialize = NULL,
  88         },
  89         // axe
  90         {
  91                 .stackable = false,
  92                 .data_size = 0,
  93                 .create = NULL,
  94                 .delete = NULL,
  95                 .serialize = NULL,
  96                 .deserialize = NULL,
  97         },
  98 };