forked from minetest/minetest
-
Notifications
You must be signed in to change notification settings - Fork 10
/
inventory.h
353 lines (296 loc) · 9.65 KB
/
inventory.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <[email protected]>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include "itemdef.h"
#include "irrlichttypes.h"
#include "itemstackmetadata.h"
#include <istream>
#include <ostream>
#include <string>
#include <vector>
#include <cassert>
struct ToolCapabilities;
struct ItemStack
{
ItemStack() = default;
ItemStack(const std::string &name_, u16 count_,
u16 wear, IItemDefManager *itemdef);
~ItemStack() = default;
// Serialization
void serialize(std::ostream &os, bool serialize_meta = true) const;
// Deserialization. Pass itemdef unless you don't want aliases resolved.
void deSerialize(std::istream &is, IItemDefManager *itemdef = NULL);
void deSerialize(const std::string &s, IItemDefManager *itemdef = NULL);
// Returns the string used for inventory
std::string getItemString(bool include_meta = true) const;
// Returns the tooltip
std::string getDescription(const IItemDefManager *itemdef) const;
std::string getShortDescription(const IItemDefManager *itemdef) const;
/*
Quantity methods
*/
bool empty() const
{
return count == 0;
}
void clear()
{
name = "";
count = 0;
wear = 0;
metadata.clear();
}
void add(u16 n)
{
count += n;
}
void remove(u16 n)
{
assert(count >= n); // Pre-condition
count -= n;
if(count == 0)
clear(); // reset name, wear and metadata too
}
// Maximum size of a stack
u16 getStackMax(const IItemDefManager *itemdef) const
{
return itemdef->get(name).stack_max;
}
// Number of items that can be added to this stack
u16 freeSpace(const IItemDefManager *itemdef) const
{
u16 max = getStackMax(itemdef);
if (count >= max)
return 0;
return max - count;
}
// Returns false if item is not known and cannot be used
bool isKnown(const IItemDefManager *itemdef) const
{
return itemdef->isKnown(name);
}
// Returns a pointer to the item definition struct,
// or a fallback one (name="unknown") if the item is unknown.
const ItemDefinition& getDefinition(
const IItemDefManager *itemdef) const
{
return itemdef->get(name);
}
// Get tool digging properties, or those of the hand if not a tool
const ToolCapabilities& getToolCapabilities(
const IItemDefManager *itemdef) const
{
const ToolCapabilities *item_cap =
itemdef->get(name).tool_capabilities;
if (item_cap == NULL)
// Fall back to the hand's tool capabilities
item_cap = itemdef->get("").tool_capabilities;
assert(item_cap != NULL);
return metadata.getToolCapabilities(*item_cap); // Check for override
}
// Wear out (only tools)
// Returns true if the item is (was) a tool
bool addWear(s32 amount, const IItemDefManager *itemdef)
{
if(getDefinition(itemdef).type == ITEM_TOOL)
{
if(amount > 65535 - wear)
clear();
else if(amount < -wear)
wear = 0;
else
wear += amount;
return true;
}
return false;
}
// If possible, adds newitem to this item.
// If cannot be added at all, returns the item back.
// If can be added partly, decremented item is returned back.
// If can be added fully, empty item is returned.
ItemStack addItem(ItemStack newitem, IItemDefManager *itemdef);
// Checks whether newitem could be added.
// If restitem is non-NULL, it receives the part of newitem that
// would be left over after adding.
bool itemFits(ItemStack newitem,
ItemStack *restitem, // may be NULL
IItemDefManager *itemdef) const;
// Takes some items.
// If there are not enough, takes as many as it can.
// Returns empty item if couldn't take any.
ItemStack takeItem(u32 takecount);
// Similar to takeItem, but keeps this ItemStack intact.
ItemStack peekItem(u32 peekcount) const;
bool operator ==(const ItemStack &s) const
{
return (this->name == s.name &&
this->count == s.count &&
this->wear == s.wear &&
this->metadata == s.metadata);
}
bool operator !=(const ItemStack &s) const
{
return !(*this == s);
}
/*
Properties
*/
std::string name = "";
u16 count = 0;
u16 wear = 0;
ItemStackMetadata metadata;
};
class InventoryList
{
public:
InventoryList(const std::string &name, u32 size, IItemDefManager *itemdef);
~InventoryList() = default;
void clearItems();
void setSize(u32 newsize);
void setWidth(u32 newWidth);
void setName(const std::string &name);
void serialize(std::ostream &os, bool incremental) const;
void deSerialize(std::istream &is);
InventoryList(const InventoryList &other) { *this = other; }
InventoryList & operator = (const InventoryList &other);
bool operator == (const InventoryList &other) const;
bool operator != (const InventoryList &other) const
{
return !(*this == other);
}
const std::string &getName() const { return m_name; }
u32 getSize() const { return static_cast<u32>(m_items.size()); }
u32 getWidth() const { return m_width; }
// Count used slots
u32 getUsedSlots() const;
// Get reference to item
const ItemStack &getItem(u32 i) const
{
assert(i < m_size); // Pre-condition
return m_items[i];
}
ItemStack &getItem(u32 i)
{
assert(i < m_size); // Pre-condition
return m_items[i];
}
// Get reference to all items
const std::vector<ItemStack> &getItems() const { return m_items; }
// Returns old item. Parameter can be an empty item.
ItemStack changeItem(u32 i, const ItemStack &newitem);
// Delete item
void deleteItem(u32 i);
// Adds an item to a suitable place. Returns leftover item (possibly empty).
ItemStack addItem(const ItemStack &newitem);
// If possible, adds item to given slot.
// If cannot be added at all, returns the item back.
// If can be added partly, decremented item is returned back.
// If can be added fully, empty item is returned.
ItemStack addItem(u32 i, const ItemStack &newitem);
// Checks whether the item could be added to the given slot
// If restitem is non-NULL, it receives the part of newitem that
// would be left over after adding.
bool itemFits(const u32 i, const ItemStack &newitem,
ItemStack *restitem = NULL) const;
// Checks whether there is room for a given item
bool roomForItem(const ItemStack &item) const;
// Checks whether the given count of the given item
// exists in this inventory list.
// If match_meta is false, only the items' names are compared.
bool containsItem(const ItemStack &item, bool match_meta) const;
// Removes the given count of the given item name from
// this inventory list. Walks the list in reverse order.
// If not as many items exist as requested, removes as
// many as possible.
// Returns the items that were actually removed.
ItemStack removeItem(const ItemStack &item);
// Takes some items from a slot.
// If there are not enough, takes as many as it can.
// Returns empty item if couldn't take any.
ItemStack takeItem(u32 i, u32 takecount);
// Move an item to a different list (or a different stack in the same list)
// count is the maximum number of items to move (0 for everything)
// returns number of moved items
u32 moveItem(u32 i, InventoryList *dest, u32 dest_i,
u32 count = 0, bool swap_if_needed = true, bool *did_swap = NULL);
// like moveItem, but without a fixed destination index
// also with optional rollback recording
void moveItemSomewhere(u32 i, InventoryList *dest, u32 count);
inline bool checkModified() const { return m_dirty; }
inline void setModified(bool dirty = true) { m_dirty = dirty; }
private:
std::vector<ItemStack> m_items;
std::string m_name;
u32 m_size; // always the same as m_items.size()
u32 m_width = 0;
IItemDefManager *m_itemdef;
bool m_dirty = true;
};
class Inventory
{
public:
~Inventory();
void clear();
Inventory(IItemDefManager *itemdef);
Inventory(const Inventory &other);
Inventory & operator = (const Inventory &other);
bool operator == (const Inventory &other) const;
bool operator != (const Inventory &other) const
{
return !(*this == other);
}
// Never ever serialize to disk using "incremental"!
void serialize(std::ostream &os, bool incremental = false) const;
void deSerialize(std::istream &is);
// Creates a new list if none exists or truncates existing lists
InventoryList * addList(const std::string &name, u32 size);
InventoryList * getList(const std::string &name);
const InventoryList * getList(const std::string &name) const;
const std::vector<InventoryList *> &getLists() const { return m_lists; }
bool deleteList(const std::string &name);
// A shorthand for adding items. Returns leftover item (possibly empty).
ItemStack addItem(const std::string &listname, const ItemStack &newitem)
{
InventoryList *list = getList(listname);
if(list == NULL)
return newitem;
return list->addItem(newitem);
}
inline bool checkModified() const
{
if (m_dirty)
return true;
for (const auto &list : m_lists)
if (list->checkModified())
return true;
return false;
}
inline void setModified(bool dirty = true)
{
m_dirty = dirty;
// Set all as handled
if (!dirty) {
for (const auto &list : m_lists)
list->setModified(dirty);
}
}
private:
// -1 if not found
s32 getListIndex(const std::string &name) const;
std::vector<InventoryList*> m_lists;
IItemDefManager *m_itemdef;
bool m_dirty = true;
};