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(svn r20392) -Fix [FS#3993]: Prevent buying bankrupt companies when you'd get too many vehicles.

This commit is contained in:
alberth 2010-08-06 20:26:01 +00:00
parent 5cfc029523
commit 422a1ad242
3 changed files with 25 additions and 1 deletions
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22
src/company_cmd.cpp
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@ -584,6 +584,25 @@ void InitializeCompanies()
_cur_company_tick_index = 0;
}
/**
* May company \a cbig buy company \a csmall?
* @param cbig Company buying \a csmall.
* @param csmall Company getting bought.
* @return Return \c true if it is allowed.
*/
bool MayCompanyTakeOver(CompanyID cbig, CompanyID csmall)
{
uint big_counts[4], small_counts[4];
CountCompanyVehicles(cbig, big_counts);
CountCompanyVehicles(csmall, small_counts);
/* Do the combined vehicle counts stay within the limits? */
return big_counts[VEH_TRAIN] + small_counts[VEH_TRAIN] <= _settings_game.vehicle.max_trains &&
big_counts[VEH_ROAD] + small_counts[VEH_ROAD] <= _settings_game.vehicle.max_roadveh &&
big_counts[VEH_SHIP] + small_counts[VEH_SHIP] <= _settings_game.vehicle.max_ships &&
big_counts[VEH_AIRCRAFT] + small_counts[VEH_AIRCRAFT] <= _settings_game.vehicle.max_aircraft;
}
/**
* Handle the bankruptcy take over of a company.
* Companies going bankrupt will ask the other companies in order of their
@ -623,7 +642,8 @@ static void HandleBankruptcyTakeover(Company *c)
FOR_ALL_COMPANIES(c2) {
if (c2->bankrupt_asked == 0 && // Don't ask companies going bankrupt themselves
!HasBit(c->bankrupt_asked, c2->index) &&
best_performance < c2->old_economy[1].performance_history) {
best_performance < c2->old_economy[1].performance_history &&
MayCompanyTakeOver(c2->index, c->index)) {
best_performance = c2->old_economy[1].performance_history;
best = c2;
}

1
src/company_func.h
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@ -16,6 +16,7 @@
#include "tile_type.h"
#include "gfx_type.h"
bool MayCompanyTakeOver(CompanyID cbig, CompanyID small);
void ChangeOwnershipOfCompanyItems(Owner old_owner, Owner new_owner);
void GetNameOfOwner(Owner owner, TileIndex tile);
void SetLocalCompany(CompanyID new_company);

3
src/economy.cpp
View File

@ -1600,6 +1600,9 @@ CommandCost CmdBuyCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32
/* Do not allow companies to take over themselves */
if (target_company == _current_company) return CMD_ERROR;
/* Disable taking over when not allowed. */
if (!MayCompanyTakeOver(_current_company, target_company)) return CMD_ERROR;
/* Get the cost here as the company is deleted in DoAcquireCompany. */
CommandCost cost(EXPENSES_OTHER, c->bankrupt_value);