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(svn r8231) -Fix (r8125): MP desync caused by calling Random() from station constructor. This was wrong because station constructor is called also when loading savegame and when player tries to build station when it is not sure that it will succeed (thanks Rubidium)

This commit is contained in:
KUDr 2007-01-18 09:34:44 +00:00
parent 653290c76a
commit 147ca22060
3 changed files with 19 additions and 21 deletions
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15
src/station.cpp
View File

@ -50,7 +50,7 @@ Station::Station(TileIndex tile)
last_vehicle_type = VEH_Invalid;
random_bits = Random();
random_bits = 0; // Random() must be called when station is really built (DC_EXEC)
waiting_triggers = 0;
}
@ -105,6 +105,19 @@ void Station::operator delete(void *p, int st_idx)
{
}
/** Called when new facility is built on the station. If it is the first facility
* it initializes also 'xy' and 'random_bits' members */
void Station::AddFacility(byte new_facility_bit, TileIndex facil_xy)
{
if (facilities == 0) {
xy = facil_xy;
random_bits = Random();
}
facilities |= new_facility_bit;
owner = _current_player;
build_date = _date;
}
void Station::MarkDirty() const
{
if (sign.width_1 != 0) {

1
src/station.h
View File

@ -159,6 +159,7 @@ struct Station {
void* operator new (size_t size, int st_idx);
void operator delete(void *p, int st_idx);
void AddFacility(byte new_facility_bit, TileIndex facil_xy);
void MarkDirty() const;
void MarkTilesDirty() const;
bool TileBelongsToRailStation(TileIndex tile) const;

24
src/station_cmd.cpp
View File

@ -1000,15 +1000,11 @@ int32 CmdBuildRailroadStation(TileIndex tile_org, uint32 flags, uint32 p1, uint3
if (CmdFailed(ret)) return ret;
st->train_tile = finalvalues[0];
if (!st->facilities) st->xy = finalvalues[0];
st->facilities |= FACIL_TRAIN;
st->owner = _current_player;
st->AddFacility(FACIL_TRAIN, finalvalues[0]);
st->trainst_w = finalvalues[1];
st->trainst_h = finalvalues[2];
st->build_date = _date;
st->rect.BeforeAddRect(tile_org, w_org, h_org, StationRect::ADD_TRY);
tile_delta = (axis == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));
@ -1415,11 +1411,7 @@ int32 CmdBuildRoadStop(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
//initialize an empty station
road_stop->prev = prev;
if (!st->facilities) st->xy = tile;
st->facilities |= (type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP;
st->owner = _current_player;
st->build_date = _date;
st->AddFacility((type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP, tile);
st->rect.BeforeAddTile(tile, StationRect::ADD_TRY);
@ -1674,15 +1666,11 @@ int32 CmdBuildAirport(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
cost += _price.build_airport * w * h;
if (flags & DC_EXEC) {
st->owner = _current_player;
st->airport_tile = tile;
if (!st->facilities) st->xy = tile;
st->facilities |= FACIL_AIRPORT;
st->AddFacility(FACIL_AIRPORT, tile);
st->airport_type = (byte)p1;
st->airport_flags = 0;
st->build_date = _date;
st->rect.BeforeAddRect(tile, w, h, StationRect::ADD_TRY);
/* if airport was demolished while planes were en-route to it, the
@ -1953,11 +1941,7 @@ int32 CmdBuildDock(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
if (flags & DC_EXEC) {
st->dock_tile = tile;
if (!st->facilities) st->xy = tile;
st->facilities |= FACIL_DOCK;
st->owner = _current_player;
st->build_date = _date;
st->AddFacility(FACIL_DOCK, tile);
st->rect.BeforeAddRect(tile, _dock_w_chk[direction], _dock_h_chk[direction], StationRect::ADD_TRY);