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(svn r24810) -Fix: Make engine preview offers more robust wrt. changes in the company ranking.

This commit is contained in:
frosch 2012-12-09 16:55:03 +00:00
parent 2bb54f09d8
commit 0e4b212c45
6 changed files with 52 additions and 48 deletions
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71
src/engine.cpp
View File

@ -740,7 +740,8 @@ static void AcceptEnginePreview(EngineID eid, CompanyID company)
SetBit(c->avail_roadtypes, HasBit(e->info.misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD);
}
e->preview_company_rank = 0xFF;
e->preview_company = INVALID_COMPANY;
e->preview_asked = (CompanyMask)-1;
if (company == _local_company) {
AddRemoveEngineFromAutoreplaceAndBuildWindows(e->type);
}
@ -751,32 +752,23 @@ static void AcceptEnginePreview(EngineID eid, CompanyID company)
}
/**
* Get the N-th best company.
* @param pp Value N, 1 means best, 2 means second best, etc.
* @return N-th best company if it exists, #INVALID_COMPANY otherwise.
* Get the best company for an engine preview.
* @param e Engine to preview.
* @return Best company if it exists, #INVALID_COMPANY otherwise.
*/
static CompanyID GetBestCompany(uint8 pp)
static CompanyID GetPreviewCompany(Engine *e)
{
CompanyID best_company;
CompanyMask mask = 0;
CompanyID best_company = INVALID_COMPANY;
do {
int32 best_hist = -1;
best_company = INVALID_COMPANY;
const Company *c;
FOR_ALL_COMPANIES(c) {
if (c->block_preview == 0 && !HasBit(mask, c->index) &&
c->old_economy[0].performance_history > best_hist) {
best_hist = c->old_economy[0].performance_history;
best_company = c->index;
}
int32 best_hist = -1;
const Company *c;
FOR_ALL_COMPANIES(c) {
if (c->block_preview == 0 && !HasBit(e->preview_asked, c->index) &&
c->old_economy[0].performance_history > best_hist) {
best_hist = c->old_economy[0].performance_history;
best_company = c->index;
}
if (best_company == INVALID_COMPANY) return INVALID_COMPANY;
SetBit(mask, best_company);
} while (--pp != 0);
}
return best_company;
}
@ -811,29 +803,28 @@ void EnginesDailyLoop()
FOR_ALL_ENGINES(e) {
EngineID i = e->index;
if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) {
if (e->flags & ENGINE_OFFER_WINDOW_OPEN) {
if (e->preview_company_rank != 0xFF && !--e->preview_wait) {
e->flags &= ~ENGINE_OFFER_WINDOW_OPEN;
if (e->preview_company != INVALID_COMPANY) {
if (!--e->preview_wait) {
DeleteWindowById(WC_ENGINE_PREVIEW, i);
e->preview_company_rank++;
e->preview_company = INVALID_COMPANY;
}
} else if (e->preview_company_rank != 0xFF) {
CompanyID best_company = GetBestCompany(e->preview_company_rank);
} else if (CountBits(e->preview_asked) < MAX_COMPANIES) {
e->preview_company = GetPreviewCompany(e);
if (best_company == INVALID_COMPANY) {
e->preview_company_rank = 0xFF;
if (e->preview_company == INVALID_COMPANY) {
e->preview_asked = (CompanyMask)-1;
continue;
}
e->flags |= ENGINE_OFFER_WINDOW_OPEN;
SetBit(e->preview_asked, e->preview_company);
e->preview_wait = 20;
/* AIs are intentionally not skipped for preview even if they cannot build a certain
* vehicle type. This is done to not give poor performing human companies an "unfair"
* boost that they wouldn't have gotten against other human companies. The check on
* the line below is just to make AIs not notice that they have a preview if they
* cannot build the vehicle. */
if (!IsVehicleTypeDisabled(e->type, true)) AI::NewEvent(best_company, new ScriptEventEnginePreview(i));
if (IsInteractiveCompany(best_company)) ShowEnginePreviewWindow(i);
if (!IsVehicleTypeDisabled(e->type, true)) AI::NewEvent(e->preview_company, new ScriptEventEnginePreview(i));
if (IsInteractiveCompany(e->preview_company)) ShowEnginePreviewWindow(i);
}
}
}
@ -852,7 +843,7 @@ void EnginesDailyLoop()
CommandCost CmdWantEnginePreview(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
Engine *e = Engine::GetIfValid(p1);
if (e == NULL || GetBestCompany(e->preview_company_rank) != _current_company) return CMD_ERROR;
if (e == NULL || e->preview_company != _current_company) return CMD_ERROR;
if (flags & DC_EXEC) AcceptEnginePreview(p1, _current_company);
@ -953,13 +944,13 @@ void EnginesMonthlyLoop()
* make sense to show the preview dialog to any company. */
if (IsVehicleTypeDisabled(e->type, false)) continue;
/* Do not introduce new rail wagons */
if (IsWagon(e->index)) continue;
/* Show preview dialog to one of the companies. */
e->flags |= ENGINE_EXCLUSIVE_PREVIEW;
/* Do not introduce new rail wagons */
if (!IsWagon(e->index)) {
e->preview_company_rank = 1; // Give to the company with the highest rating.
}
e->preview_company = INVALID_COMPANY;
e->preview_asked = 0;
}
}

5
src/engine_base.h
View File

@ -33,8 +33,9 @@ struct Engine : EnginePool::PoolItem<&_engine_pool> {
uint16 duration_phase_2; ///< Second reliability phase in months, keeping #reliability_max.
uint16 duration_phase_3; ///< Third reliability phase on months, decaying to #reliability_final.
byte flags; ///< Flags of the engine. @see EngineFlags
uint8 preview_company_rank; ///< Rank of the company that is offered a preview. \c 0xFF means no company.
byte preview_wait; ///< Daily countdown timer for timeout of offering the engine to the #preview_company_rank company.
CompanyMask preview_asked; ///< Bit for each company which has already been offered a preview.
CompanyByte preview_company;///< Company which is currently being offered a preview \c INVALID_COMPANY means no company.
byte preview_wait; ///< Daily countdown timer for timeout of offering the engine to the #preview_company company.
CompanyMask company_avail; ///< Bit for each company whether the engine is available for that company.
uint8 original_image_index; ///< Original vehicle image index, thus the image index of the overridden vehicle
VehicleType type; ///< %Vehicle type, ie #VEH_ROAD, #VEH_TRAIN, etc.

1
src/engine_type.h
View File

@ -166,7 +166,6 @@ enum EngineMiscFlags {
enum EngineFlags {
ENGINE_AVAILABLE = 1, ///< This vehicle is available to everyone.
ENGINE_EXCLUSIVE_PREVIEW = 2, ///< This vehicle is in the exclusive preview stage, either being used or being offered to a company.
ENGINE_OFFER_WINDOW_OPEN = 4, ///< The exclusive offer window is currently open for a company.
};
static const uint MAX_LENGTH_ENGINE_NAME_CHARS = 32; ///< The maximum length of an engine name in characters including '\0'

15
src/saveload/engine_sl.cpp
View File

@ -30,7 +30,9 @@ static const SaveLoad _engine_desc[] = {
SLE_CONDNULL(1, 0, 120),
SLE_VAR(Engine, flags, SLE_UINT8),
SLE_VAR(Engine, preview_company_rank,SLE_UINT8),
SLE_CONDNULL(1, 0, 178), // old preview_company_rank
SLE_CONDVAR(Engine, preview_asked, SLE_UINT16, 179, SL_MAX_VERSION),
SLE_CONDVAR(Engine, preview_company, SLE_UINT8, 179, SL_MAX_VERSION),
SLE_VAR(Engine, preview_wait, SLE_UINT8),
SLE_CONDNULL(1, 0, 44),
SLE_CONDVAR(Engine, company_avail, SLE_FILE_U8 | SLE_VAR_U16, 0, 103),
@ -67,6 +69,14 @@ static void Load_ENGN()
while ((index = SlIterateArray()) != -1) {
Engine *e = GetTempDataEngine(index);
SlObject(e, _engine_desc);
if (IsSavegameVersionBefore(179)) {
/* preview_company_rank was replaced with preview_company and preview_asked.
* Just cancel any previews. */
e->flags &= ~4; // ENGINE_OFFER_WINDOW_OPEN
e->preview_company = INVALID_COMPANY;
e->preview_asked = (CompanyMask)-1;
}
}
}
@ -91,7 +101,8 @@ void CopyTempEngineData()
e->duration_phase_2 = se->duration_phase_2;
e->duration_phase_3 = se->duration_phase_3;
e->flags = se->flags;
e->preview_company_rank= se->preview_company_rank;
e->preview_asked = se->preview_asked;
e->preview_company = se->preview_company;
e->preview_wait = se->preview_wait;
e->company_avail = se->company_avail;
if (se->name != NULL) e->name = strdup(se->name);

5
src/saveload/oldloader_sl.cpp
View File

@ -445,7 +445,8 @@ static bool FixTTOEngines()
e->info.climates = 1;
}
e->preview_company_rank = 0;
e->preview_company = INVALID_COMPANY;
e->preview_asked = (CompanyMask)-1;
e->preview_wait = 0;
e->name = NULL;
}
@ -1401,7 +1402,7 @@ static const OldChunks engine_chunk[] = {
OCL_NULL( 1 ), // lifelength
OCL_SVAR( OC_UINT8, Engine, flags ),
OCL_SVAR( OC_UINT8, Engine, preview_company_rank ),
OCL_NULL( 1 ), // preview_company_rank
OCL_SVAR( OC_UINT8, Engine, preview_wait ),
OCL_CNULL( OC_TTD, 2 ), ///< railtype + junk

3
src/saveload/saveload.cpp
View File

@ -242,8 +242,9 @@
* 176 24446
* 177 24619
* 178 24789
* 179 24810
*/
extern const uint16 SAVEGAME_VERSION = 178; ///< Current savegame version of OpenTTD.
extern const uint16 SAVEGAME_VERSION = 179; ///< Current savegame version of OpenTTD.
SavegameType _savegame_type; ///< type of savegame we are loading