OpenTTD
Data Structures | Macros | Typedefs | Enumerations | Functions | Variables
oldloader.h File Reference

Declarations of strctures and function used in loader of old savegames. More...

#include "saveload.h"
#include "../tile_type.h"

Go to the source code of this file.

Data Structures

struct  LoadgameState
struct  OldChunks

Macros

#define OCL_SVAR(type, base, offset)   { type, 1, NULL, (uint)cpp_offsetof(base, offset), NULL }
#define OCL_VAR(type, amount, pointer)   { type, amount, pointer, 0, NULL }
#define OCL_END()   { OC_END, 0, NULL, 0, NULL }
#define OCL_CNULL(type, amount)   { OC_NULL | type, amount, NULL, 0, NULL }
#define OCL_CCHUNK(type, amount, proc)   { OC_CHUNK | type, amount, NULL, 0, proc }
#define OCL_ASSERT(type, size)   { OC_ASSERT | type, 1, NULL, size, NULL }
#define OCL_NULL(amount)   OCL_CNULL((OldChunkType)0, amount)
#define OCL_CHUNK(amount, proc)   OCL_CCHUNK((OldChunkType)0, amount, proc)

Typedefs

typedef bool OldChunkProc (LoadgameState *ls, int num)

Enumerations

enum  OldChunkType {
  OC_SIMPLE = 0, OC_NULL = 1, OC_CHUNK = 2, OC_ASSERT = 3,
  OC_TTD = 1 << 4, OC_TTO = 1 << 5, OC_VAR_I8 = 1 << 8, OC_VAR_U8 = 2 << 8,
  OC_VAR_I16 = 3 << 8, OC_VAR_U16 = 4 << 8, OC_VAR_I32 = 5 << 8, OC_VAR_U32 = 6 << 8,
  OC_VAR_I64 = 7 << 8, OC_VAR_U64 = 8 << 8, OC_FILE_I8 = 1 << 16, OC_FILE_U8 = 2 << 16,
  OC_FILE_I16 = 3 << 16, OC_FILE_U16 = 4 << 16, OC_FILE_I32 = 5 << 16, OC_FILE_U32 = 6 << 16,
  OC_INT8 = OC_VAR_I8 | OC_FILE_I8, OC_UINT8 = OC_VAR_U8 | OC_FILE_U8, OC_INT16 = OC_VAR_I16 | OC_FILE_I16, OC_UINT16 = OC_VAR_U16 | OC_FILE_U16,
  OC_INT32 = OC_VAR_I32 | OC_FILE_I32, OC_UINT32 = OC_VAR_U32 | OC_FILE_U32, OC_TILE = OC_VAR_U32 | OC_FILE_U16, OC_DEREFERENCE_POINTER = 1 << 31,
  OC_END = 0
}

Functions

 assert_compile (sizeof(TileIndex)==4)
byte ReadByte (LoadgameState *ls)
 Reads a byte from the buffer and decompress if needed.
bool LoadChunk (LoadgameState *ls, void *base, const OldChunks *chunks)
 Loads a chunk from the old savegame.
bool LoadTTDMain (LoadgameState *ls)
bool LoadTTOMain (LoadgameState *ls)
static uint16 ReadUint16 (LoadgameState *ls)
static uint32 ReadUint32 (LoadgameState *ls)

Variables

static const uint BUFFER_SIZE = 4096
static const uint OLD_MAP_SIZE = 256 * 256
uint _bump_assert_value

Detailed Description

Declarations of strctures and function used in loader of old savegames.

Definition in file oldloader.h.

Enumeration Type Documentation

Enumerator:
OC_TTD 

chunk is valid ONLY for TTD savegames

OC_TTO 

-//- TTO (default is neither of these)

OC_DEREFERENCE_POINTER 

Dereference the pointer once before writing to it, so we do not have to use big static arrays.

OC_END 

End of the whole chunk, all 32 bits set to zero.

Definition at line 37 of file oldloader.h.

Function Documentation

bool LoadChunk ( LoadgameState ls,
void *  base,
const OldChunks chunks 
)

Loads a chunk from the old savegame.

Definition at line 111 of file oldloader.cpp.

References _savegame_type, DEBUG, GB(), OC_DEREFERENCE_POINTER, OC_END, OC_TTD, OC_TTO, ReadByte(), SGT_TTO, and OldChunks::type.

Referenced by LoadOldVehicle().

byte ReadByte ( LoadgameState ls)

Reads a byte from the buffer and decompress if needed.

Definition at line 77 of file oldloader.cpp.

References ReadByte(), and ReadByteFromFile().

Referenced by LoadChunk(), LoadOldVehicle(), and ReadByte().