Kelsidavis-WoWee/include/pipeline/dbc_layout.hpp
Kelsi 7092844b5e Add multi-expansion support with data-driven protocol layer
Replace hardcoded WotLK protocol constants with a data-driven architecture
supporting Classic 1.12.1, TBC 2.4.3, and WotLK 3.3.5a. Each expansion
has JSON profiles for opcodes, update fields, and DBC layouts, plus C++
polymorphic packet parsers for binary format differences (movement flags,
speed fields, transport data, spline format, char enum layout).

Key components:
- ExpansionRegistry: scans Data/expansions/*/expansion.json at startup
- OpcodeTable: logical enum <-> wire values loaded from JSON
- UpdateFieldTable: field indices loaded from JSON per expansion
- DBCLayout: schema-driven DBC field lookups replacing magic numbers
- PacketParsers: WotLK/TBC/Classic parsers with correct flag positions
- Multi-manifest AssetManager: layered manifests with priority ordering
- HDPackManager: overlay texture packs with expansion compatibility
- Auth screen expansion picker replacing hardcoded version dropdown
2026-02-12 22:56:36 -08:00

64 lines
1.8 KiB
C++

#pragma once
#include <cstdint>
#include <string>
#include <unordered_map>
namespace wowee {
namespace pipeline {
/**
* Maps DBC field names to column indices for a single DBC file.
* Column indices vary between WoW expansions.
*/
struct DBCFieldMap {
std::unordered_map<std::string, uint32_t> fields;
/** Get column index by field name. Returns 0xFFFFFFFF if unknown. */
uint32_t field(const std::string& name) const {
auto it = fields.find(name);
return (it != fields.end()) ? it->second : 0xFFFFFFFF;
}
/** Convenience operator for shorter syntax: layout["Name"] */
uint32_t operator[](const std::string& name) const { return field(name); }
};
/**
* Maps DBC file names to their field layouts.
* Loaded from JSON (e.g. Data/expansions/wotlk/dbc_layouts.json).
*/
class DBCLayout {
public:
/** Load from JSON file. Returns true if successful. */
bool loadFromJson(const std::string& path);
/** Load built-in WotLK 3.3.5a defaults. */
void loadWotlkDefaults();
/** Get the field map for a DBC file. Returns nullptr if unknown. */
const DBCFieldMap* getLayout(const std::string& dbcName) const;
/** Number of DBC layouts loaded. */
size_t size() const { return layouts_.size(); }
private:
std::unordered_map<std::string, DBCFieldMap> layouts_;
};
/**
* Global active DBC layout (set by Application at startup).
*/
void setActiveDBCLayout(const DBCLayout* layout);
const DBCLayout* getActiveDBCLayout();
/** Convenience: get field index for a DBC field. */
inline uint32_t dbcField(const std::string& dbcName, const std::string& fieldName) {
const auto* l = getActiveDBCLayout();
if (!l) return 0xFFFFFFFF;
const auto* fm = l->getLayout(dbcName);
return fm ? fm->field(fieldName) : 0xFFFFFFFF;
}
} // namespace pipeline
} // namespace wowee