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(svn r8185) -Codechange: Equipped Roadstops with new/delete operators and gave them proper constructors/destructors (Thanks to KUDr for a nice interactive C++ lesson)

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This commit is contained in:
celestar 2007-01-17 11:15:51 +00:00
parent a973e45719
commit 8c54793068
4 changed files with 121 additions and 93 deletions
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23
src/oldloader.cpp
View File

@ -314,27 +314,10 @@ static void FixOldStations(void)
}
/* Check if there is a bus or truck station, and convert to new format */
if (st->bus_tile_obsolete != 0) {
st->bus_stops = AllocateRoadStop();
st->bus_stops->xy = st->bus_tile_obsolete;
st->bus_stops->used = true;
st->bus_stops->status = 3;
st->bus_stops->station = st->index;
st->bus_stops->next = NULL;
st->bus_stops->prev = NULL;
st->bus_stops->num_vehicles = 0;
}
if (st->bus_tile_obsolete != 0) st->bus_stops = new RoadStop(st->bus_tile_obsolete, st->index);
if (st->lorry_tile_obsolete != 0) st->truck_stops = new RoadStop(st->lorry_tile_obsolete, st->index);
if (st->lorry_tile_obsolete != 0) {
st->truck_stops = AllocateRoadStop();
st->truck_stops->xy = st->lorry_tile_obsolete;
st->truck_stops->used = true;
st->truck_stops->status = 3;
st->truck_stops->station = st->index;
st->truck_stops->next = NULL;
st->truck_stops->prev = NULL;
st->truck_stops->num_vehicles = 0;
}
}
}

97
src/station.cpp
View File

@ -312,3 +312,100 @@ StationRect& StationRect::operator = (Rect src)
return *this;
}
/************************************************************************/
/* RoadStop implementation */
/************************************************************************/
/** Allocates a new RoadStop onto the pool, or recycles an unsed one
* @return a pointer to the new roadstop
*/
void *RoadStop::operator new(size_t size)
{
RoadStop *rs = AllocateRaw();
return rs;
}
/** Gets a RoadStop with a given index and allocates it when needed
* @return a pointer to the roadstop
*/
void *RoadStop::operator new(size_t size, int index)
{
if (!AddBlockIfNeeded(&_RoadStop_pool, index)) {
error("RoadStops: failed loading savegame: too many RoadStops");
}
RoadStop *rs = GetRoadStop(index);
return rs;
}
void RoadStop::operator delete(void *p)
{
}
void RoadStop::operator delete(void *p, int index)
{
}
/** Initializes a RoadStop */
RoadStop::RoadStop(TileIndex tile, StationID index)
{
DEBUG(ms, cDebugCtorLevel, "I+%3d at %d[0x%x]", index, tile, tile);
xy = tile;
used = true;
status = 3; //stop is free
next = NULL;
prev = NULL;
station = index;
num_vehicles = 0;
}
/** De-Initializes a RoadStops. This includes clearing all slots that vehicles might
* have and unlinks it from the linked list of road stops at the given station
*/
RoadStop::~RoadStop()
{
Vehicle *v;
/* Clear the slot assignment of all vehicles heading for this road stop */
if (num_vehicles != 0) {
FOR_ALL_VEHICLES(v) {
if (v->type == VEH_Road && v->u.road.slot == this) ClearSlot(v);
}
}
assert(num_vehicles == 0);
if (prev != NULL) prev->next = next;
if (next != NULL) next->prev = prev;
used = false;
DEBUG(ms, cDebugCtorLevel , "I- at %3d%d[0x%x]", station, xy, xy);
xy = INVALID_TILE;
station = INVALID_STATION;
}
/** Low-level function for allocating a RoadStop on the pool */
RoadStop *RoadStop::AllocateRaw( void )
{
RoadStop *rs;
/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
* TODO - This is just a temporary stage, this will be removed. */
for (rs = GetRoadStop(0); rs != NULL; rs = (rs->index + 1U < GetRoadStopPoolSize()) ? GetRoadStop(rs->index + 1U) : NULL) {
if (!IsValidRoadStop(rs)) {
RoadStopID index = rs->index;
memset(rs, 0, sizeof(*rs));
rs->index = index;
return rs;
}
}
/* Check if we can add a block to the pool */
if (AddBlockToPool(&_RoadStop_pool)) return AllocateRaw();
return NULL;
}

22
src/station.h
View File

@ -53,6 +53,20 @@ typedef struct RoadStop {
StationID station;
struct RoadStop *next;
struct RoadStop *prev;
static const int cDebugCtorLevel = 3;
RoadStop(TileIndex tile, StationID index);
~RoadStop();
void *operator new (size_t size);
void operator delete(void *rs);
/* For loading games */
void *operator new (size_t size, int index);
void operator delete(void *rs, int index);
static RoadStop *AllocateRaw( void );
} RoadStop;
typedef struct StationSpecList {
@ -248,14 +262,6 @@ static inline bool IsValidRoadStop(const RoadStop *rs)
return rs->used;
}
void DestroyRoadStop(RoadStop* rs);
static inline void DeleteRoadStop(RoadStop *rs)
{
DestroyRoadStop(rs);
rs->used = false;
}
#define FOR_ALL_ROADSTOPS_FROM(rs, start) for (rs = GetRoadStop(start); rs != NULL; rs = (rs->index + 1U < GetRoadStopPoolSize()) ? GetRoadStop(rs->index + 1U) : NULL) if (IsValidRoadStop(rs))
#define FOR_ALL_ROADSTOPS(rs) FOR_ALL_ROADSTOPS_FROM(rs, 0)

72
src/station_cmd.cpp
View File

@ -77,16 +77,6 @@ DEFINE_OLD_POOL(RoadStop, RoadStop, RoadStopPoolNewBlock, NULL)
extern void UpdateAirplanesOnNewStation(Station *st);
static void InitializeRoadStop(RoadStop *road_stop, RoadStop *previous, TileIndex tile, StationID index)
{
road_stop->xy = tile;
road_stop->used = true;
road_stop->status = 3; //stop is free
road_stop->next = NULL;
road_stop->prev = previous;
road_stop->station = index;
road_stop->num_vehicles = 0;
}
RoadStop* GetPrimaryRoadStop(const Station* st, RoadStopType type)
{
@ -122,28 +112,6 @@ uint GetNumRoadStopsInStation(const Station* st, RoadStopType type)
return num;
}
RoadStop *AllocateRoadStop(void)
{
RoadStop *rs;
/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
* TODO - This is just a temporary stage, this will be removed. */
for (rs = GetRoadStop(0); rs != NULL; rs = (rs->index + 1U < GetRoadStopPoolSize()) ? GetRoadStop(rs->index + 1U) : NULL) {
if (!IsValidRoadStop(rs)) {
RoadStopID index = rs->index;
memset(rs, 0, sizeof(*rs));
rs->index = index;
return rs;
}
}
/* Check if we can add a block to the pool */
if (AddBlockToPool(&_RoadStop_pool)) return AllocateRoadStop();
return NULL;
}
/* Calculate the radius of the station. Basicly it is the biggest
* radius that is available within the station */
@ -1393,7 +1361,7 @@ int32 CmdBuildRoadStop(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
}
//give us a road stop in the list, and check if something went wrong
road_stop = AllocateRoadStop();
road_stop = new RoadStop(tile, INVALID_STATION);
if (road_stop == NULL) {
return_cmd_error(type ? STR_3008B_TOO_MANY_TRUCK_STOPS : STR_3008A_TOO_MANY_BUS_STOPS);
}
@ -1443,7 +1411,8 @@ int32 CmdBuildRoadStop(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
*currstop = road_stop;
//initialize an empty station
InitializeRoadStop(road_stop, prev, tile, st->index);
road_stop->prev = prev;
road_stop->station = st->index;
if (!st->facilities) st->xy = tile;
st->facilities |= (type) ? FACIL_TRUCK_STOP : FACIL_BUS_STOP;
st->owner = _current_player;
@ -1499,7 +1468,7 @@ static int32 RemoveRoadStop(Station *st, uint32 flags, TileIndex tile)
*primary_stop = (*primary_stop)->next;
}
DeleteRoadStop(cur_stop);
delete cur_stop;
DoClearSquare(tile);
st->rect.AfterRemoveTile(st, tile);
@ -2356,27 +2325,6 @@ static uint32 VehicleEnter_Station(Vehicle *v, TileIndex tile, int x, int y)
return 0;
}
/**
* Cleanup a RoadStop. Make sure no vehicles try to go to this roadstop.
*/
void DestroyRoadStop(RoadStop* rs)
{
Vehicle *v;
/* Clear the slot assignment of all vehicles heading for this road stop */
if (rs->num_vehicles != 0) {
FOR_ALL_VEHICLES(v) {
if (v->type == VEH_Road && v->u.road.slot == rs) {
ClearSlot(v);
}
}
}
assert(rs->num_vehicles == 0);
if (rs->prev != NULL) rs->prev->next = rs->next;
if (rs->next != NULL) rs->next->prev = rs->prev;
}
void DeleteAllPlayerStations(void)
{
@ -3059,18 +3007,16 @@ static void Load_STNS(void)
* convert, if needed */
if (CheckSavegameVersion(6)) {
if (st->bus_tile_obsolete != 0) {
st->bus_stops = AllocateRoadStop();
st->bus_stops = new RoadStop(st->bus_tile_obsolete, st->index);
if (st->bus_stops == NULL)
error("Station: too many busstations in savegame");
InitializeRoadStop(st->bus_stops, NULL, st->bus_tile_obsolete, st->index);
}
if (st->lorry_tile_obsolete != 0) {
st->truck_stops = AllocateRoadStop();
st->truck_stops = new RoadStop(st->lorry_tile_obsolete, st->index);
if (st->truck_stops == NULL)
error("Station: too many truckstations in savegame");
InitializeRoadStop(st->truck_stops, NULL, st->lorry_tile_obsolete, st->index);
}
}
}
@ -3094,12 +3040,8 @@ static void Load_ROADSTOP(void)
int index;
while ((index = SlIterateArray()) != -1) {
RoadStop *rs;
RoadStop *rs = new (index) RoadStop(INVALID_TILE, INVALID_STATION);
if (!AddBlockIfNeeded(&_RoadStop_pool, index))
error("RoadStops: failed loading savegame: too many RoadStops");
rs = GetRoadStop(index);
SlObject(rs, _roadstop_desc);
}
}