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(svn r15216) -Feature: native support for Transport Tycoon (Original) savegames. Based on SVXConverter's source code and documentation by Roman Vetter

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smatz
2009-01-23 02:35:17 +00:00
parent 83e1288c6a
commit 6dffd8ae82
14 changed files with 898 additions and 266 deletions
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83
src/engine.cpp
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@@ -252,6 +252,49 @@ void SetYearEngineAgingStops()
}
}
void StartupOneEngine(Engine *e, Date aging_date)
{
const EngineInfo *ei = &e->info;
uint32 r;
e->age = 0;
e->flags = 0;
e->company_avail = 0;
/* The magic value of 729 days below comes from the NewGRF spec. If the
* base intro date is before 1922 then the random number of days is not
* added. */
r = Random();
e->intro_date = ei->base_intro <= ConvertYMDToDate(1922, 0, 1) ? ei->base_intro : (Date)GB(r, 0, 9) + ei->base_intro;
if (e->intro_date <= _date) {
e->age = (aging_date - e->intro_date) >> 5;
e->company_avail = (CompanyMask)-1;
e->flags |= ENGINE_AVAILABLE;
}
e->reliability_start = GB(r, 16, 14) + 0x7AE0;
r = Random();
e->reliability_max = GB(r, 0, 14) + 0xBFFF;
e->reliability_final = GB(r, 16, 14) + 0x3FFF;
r = Random();
e->duration_phase_1 = GB(r, 0, 5) + 7;
e->duration_phase_2 = GB(r, 5, 4) + ei->base_life * 12 - 96;
e->duration_phase_3 = GB(r, 9, 7) + 120;
e->reliability_spd_dec = ei->decay_speed << 2;
CalcEngineReliability(e);
e->lifelength = ei->lifelength + _settings_game.vehicle.extend_vehicle_life;
/* prevent certain engines from ever appearing. */
if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) {
e->flags |= ENGINE_AVAILABLE;
e->company_avail = 0;
}
}
void StartupEngines()
{
Engine *e;
@@ -259,45 +302,7 @@ void StartupEngines()
const Date aging_date = min(_date, ConvertYMDToDate(_year_engine_aging_stops, 0, 1));
FOR_ALL_ENGINES(e) {
const EngineInfo *ei = &e->info;
uint32 r;
e->age = 0;
e->flags = 0;
e->company_avail = 0;
/* The magic value of 729 days below comes from the NewGRF spec. If the
* base intro date is before 1922 then the random number of days is not
* added. */
r = Random();
e->intro_date = ei->base_intro <= ConvertYMDToDate(1922, 0, 1) ? ei->base_intro : (Date)GB(r, 0, 9) + ei->base_intro;
if (e->intro_date <= _date) {
e->age = (aging_date - e->intro_date) >> 5;
e->company_avail = (CompanyMask)-1;
e->flags |= ENGINE_AVAILABLE;
}
e->reliability_start = GB(r, 16, 14) + 0x7AE0;
r = Random();
e->reliability_max = GB(r, 0, 14) + 0xBFFF;
e->reliability_final = GB(r, 16, 14) + 0x3FFF;
r = Random();
e->duration_phase_1 = GB(r, 0, 5) + 7;
e->duration_phase_2 = GB(r, 5, 4) + ei->base_life * 12 - 96;
e->duration_phase_3 = GB(r, 9, 7) + 120;
e->reliability_spd_dec = ei->decay_speed << 2;
CalcEngineReliability(e);
e->lifelength = ei->lifelength + _settings_game.vehicle.extend_vehicle_life;
/* prevent certain engines from ever appearing. */
if (!HasBit(ei->climates, _settings_game.game_creation.landscape)) {
e->flags |= ENGINE_AVAILABLE;
e->company_avail = 0;
}
StartupOneEngine(e, aging_date);
}
/* Update the bitmasks for the vehicle lists */