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(svn r15168) -Codechange: use only really basic map accessors in oldloader.cpp, shuffle the code a bit

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smatz 2009-01-20 14:47:17 +00:00
parent eab990901b
commit 7a13ade405
1 changed files with 67 additions and 53 deletions
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120
src/saveload/oldloader.cpp
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@ -26,6 +26,8 @@
#include "../strings_func.h"
#include "../effectvehicle_base.h"
#include "../string_func.h"
#include "../core/mem_func.hpp"
#include "../core/alloc_type.hpp"
#include "table/strings.h"
@ -312,6 +314,67 @@ static void InitLoading(LoadgameState *ls)
* Begin -- Stuff to fix the savegames to be OpenTTD compatible
*/
static uint8 *_old_map3;
static void FixOldMapArray()
{
/* _old_map3 is moved to _m::m3 and _m::m4 */
for (TileIndex t = 0; t < OLD_MAP_SIZE; t++) {
_m[t].m3 = _old_map3[t * 2];
_m[t].m4 = _old_map3[t * 2 + 1];
}
for (TileIndex t = 0; t < OLD_MAP_SIZE; t++) {
switch (GetTileType(t)) {
case MP_STATION:
_m[t].m4 = 0; // We do not understand this TTDP station mapping (yet)
switch (_m[t].m5) {
/* We have drive through stops at a totally different place */
case 0x53: case 0x54: _m[t].m5 += 170 - 0x53; break; // Bus drive through
case 0x57: case 0x58: _m[t].m5 += 168 - 0x57; break; // Truck drive through
case 0x55: case 0x56: _m[t].m5 += 170 - 0x55; break; // Bus tram stop
case 0x59: case 0x5A: _m[t].m5 += 168 - 0x59; break; // Truck tram stop
default: break;
}
break;
case MP_RAILWAY:
/* We save presignals different from TTDPatch, convert them */
if (GB(_m[t].m5, 6, 2) == 1) { // RAIL_TILE_SIGNALS
/* This byte is always zero in TTD for this type of tile */
if (_m[t].m4) { // Convert the presignals to our own format
_m[t].m4 = (_m[t].m4 >> 1) & 7;
}
}
/* TTDPatch stores PBS things in L6 and all elsewhere; so we'll just
* clear it for ourselves and let OTTD's rebuild PBS itself */
_m[t].m4 &= 0xF; // Only keep the lower four bits; upper four is PBS
break;
case MP_WATER:
/* if water class == 3, make river there */
if (GB(_m[t].m3, 0, 2) == 3) {
SetTileType(t, MP_WATER);
SetTileOwner(t, OWNER_WATER);
_m[t].m2 = 0;
_m[t].m3 = 2; // WATER_CLASS_RIVER
_m[t].m4 = Random();
_m[t].m5 = 0;
}
break;
default:
break;
}
}
/* Some old TTD(Patch) savegames could have buoys at tile 0
* (without assigned station struct) */
MemSetT(&_m[0], 0);
SetTileType(0, MP_WATER);
SetTileOwner(0, OWNER_WATER);
}
extern uint32 GetOldTownName(uint32 townnameparts, byte old_town_name_type);
static void FixOldTowns()
@ -392,7 +455,6 @@ extern uint _animated_tile_count;
extern char *_old_name_array;
static byte _old_vehicle_multiplier;
static uint8 *_old_map3;
static uint32 _old_town_index;
static uint16 _old_string_id;
static uint16 _old_string_id_2;
@ -1450,67 +1512,26 @@ static const OldChunks main_chunk[] = {
static bool LoadOldMain(LoadgameState *ls)
{
int i;
DEBUG(oldloader, 3, "Reading main chunk...");
/* Load the biggest chunk */
_old_map3 = MallocT<byte>(OLD_MAP_SIZE * 2);
SmallStackSafeStackAlloc<byte, OLD_MAP_SIZE * 2> map3;
_old_map3 = map3.data;
_old_vehicle_names = NULL;
if (!LoadChunk(ls, NULL, main_chunk)) {
DEBUG(oldloader, 0, "Loading failed");
free(_old_map3);
free(_old_vehicle_names);
return false;
}
DEBUG(oldloader, 3, "Done, converting game data...");
FixOldMapArray();
/* Fix some general stuff */
_settings_game.game_creation.landscape = _settings_game.game_creation.landscape & 0xF;
/* Remap some pointers */
_cur_town_ctr = REMAP_TOWN_IDX(_old_cur_town_ctr);
/* _old_map3 is changed in _map3_lo and _map3_hi */
for (i = 0; i < OLD_MAP_SIZE; i++) {
_m[i].m3 = _old_map3[i * 2];
_m[i].m4 = _old_map3[i * 2 + 1];
}
for (i = 0; i < OLD_MAP_SIZE; i ++) {
switch (GetTileType(i)) {
case MP_STATION:
_m[i].m4 = 0; // We do not understand this TTDP station mapping (yet)
switch (_m[i].m5) {
/* We have drive through stops at a totally different place */
case 0x53: case 0x54: _m[i].m5 += 170 - 0x53; break; // Bus drive through
case 0x57: case 0x58: _m[i].m5 += 168 - 0x57; break; // Truck drive through
case 0x55: case 0x56: _m[i].m5 += 170 - 0x55; break; // Bus tram stop
case 0x59: case 0x5A: _m[i].m5 += 168 - 0x59; break; // Truck tram stop
default: break;
}
break;
case MP_RAILWAY:
/* We save presignals different from TTDPatch, convert them */
if (GetRailTileType(i) == RAIL_TILE_SIGNALS) {
/* This byte is always zero in TTD for this type of tile */
if (_m[i].m4) /* Convert the presignals to our own format */
_m[i].m4 = (_m[i].m4 >> 1) & 7;
}
/* TTDPatch stores PBS things in L6 and all elsewhere; so we'll just
* clear it for ourselves and let OTTD's rebuild PBS itself */
_m[i].m4 &= 0xF; /* Only keep the lower four bits; upper four is PBS */
break;
case MP_WATER:
if (GetWaterClass(i) == 3) MakeRiver(i, Random());
break;
default:
break;
}
}
/* Make sure the available engines are really available, otherwise
* we will get a "new vehicle"-spree. */
Engine *e;
@ -1531,7 +1552,6 @@ static bool LoadOldMain(LoadgameState *ls)
DEBUG(oldloader, 3, "Finished converting game data");
DEBUG(oldloader, 1, "TTD(Patch) savegame successfully converted");
free(_old_map3);
free(_old_vehicle_names);
return true;
@ -1582,12 +1602,6 @@ bool LoadOldSaveGame(const char *file)
return false;
}
/* Some old TTD(Patch) savegames could have buoys at tile 0
* (without assigned station struct)
* MakeWater() can be used as long as sea has the same
* format as old savegames (eg. everything is zeroed) */
MakeWater(0);
_pause_game = 2;
return true;