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https://github.com/brues-code/ClassicAPI.git
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Brues
8fa344a084
Add item/CGItem.{h,cpp} with two null-safe accessors for a CGItem's two
descriptor-like pointers:
InstanceBlock(cgItem) -> CGItem + 0x08 (item GUID @ +0, itemID @ +0x0C)
ObjectFields(cgItem) -> CGItem + 0x114 (stack/flags/charges/durability/...)
Replace the 30 hand-written `*reinterpret_cast<const uint8_t *const *>(x +
OFF_ITEM_INSTANCE_BLOCK/OFF_ITEM_DESCRIPTOR)` derefs across 24 files with
these calls. Behavior-preserving: same deref, all reads were already const,
and each site keeps its own null-check and field reads. Helpers add a
cgItem null guard (strictly safer).
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
// This file is part of ClassicAPI.
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//
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// ClassicAPI is free software: you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software Foundation, either
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// version 3 of the License, or (at your option) any later version.
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//
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// ClassicAPI is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along with
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// ClassicAPI. If not, see <https://www.gnu.org/licenses/>.
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// `C_Item.GetStackCount(itemLocation)` — current stack count for the
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// specific item slot. Reads `ITEM_FIELD_STACK_COUNT` directly off the
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// CGItem's m_objectFields descriptor — same field
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// `Script_GetContainerItemInfo` returns as `itemCount`. Distinct from
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// `C_Item.GetItemCount(itemID)`, which sums every stack of `itemID`
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// across the player's inventory.
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#include "Game.h"
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#include "Offsets.h"
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#include "item/CGItem.h"
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#include "item/Location.h"
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#include <cstdint>
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namespace Item::StackCount {
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static int __fastcall Script_GetStackCount(void *L) {
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if (!Item::Location::IsLocationArg(L, 1)) {
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Game::Lua::PushNumber(L, 0.0);
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return 1;
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}
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auto *item = Item::Location::Resolve(L, 1);
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if (item == nullptr) {
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Game::Lua::PushNumber(L, 0.0);
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return 1;
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}
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auto *descriptor = Item::ObjectFields(item);
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if (descriptor == nullptr) {
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Game::Lua::PushNumber(L, 0.0);
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return 1;
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}
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const int count = *reinterpret_cast<const int *>(
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descriptor + Offsets::OFF_DESCRIPTOR_STACK_COUNT);
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Game::Lua::PushNumber(L, static_cast<double>(count));
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return 1;
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}
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static void RegisterLuaFunctions() {
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Game::Lua::RegisterTableFunction("C_Item", "GetStackCount",
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&Script_GetStackCount);
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}
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static const Game::ModuleAutoRegister _autoreg{&RegisterLuaFunctions};
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} // namespace Item::StackCount
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