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Location: cpp/openttd-patchpack/source/src/cargotype.cpp - annotation
r7810:36ef334ff30e
2.1 KiB
text/x-c
(svn r11360) -Fix [FS#1375]: do not crash when trying to "draw" an invalid string, just draw a message saying it is invalid.
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/** @file cargotype.cpp */
#include "stdafx.h"
#include "openttd.h"
#include "macros.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "newgrf_cargo.h"
#include "cargotype.h"
#include "table/cargo_const.h"
CargoSpec _cargo[NUM_CARGO];
static const byte INVALID_CARGO = 0xFF;
/* Bitmask of cargo types available */
uint32 _cargo_mask;
void SetupCargoForClimate(LandscapeID l)
{
assert(l < lengthof(_default_climate_cargo));
/* Reset and disable all cargo types */
memset(_cargo, 0, sizeof(_cargo));
for (CargoID i = 0; i < lengthof(_cargo); i++) _cargo[i].bitnum = INVALID_CARGO;
_cargo_mask = 0;
for (CargoID i = 0; i < lengthof(_default_climate_cargo[l]); i++) {
CargoLabel cl = _default_climate_cargo[l][i];
/* Bzzt: check if cl is just an index into the cargo table */
if (cl < lengthof(_default_cargo)) {
/* Copy the indexed cargo */
_cargo[i] = _default_cargo[cl];
SETBIT(_cargo_mask, i);
continue;
}
/* Loop through each of the default cargo types to see if
* the label matches */
for (uint j = 0; j < lengthof(_default_cargo); j++) {
if (_default_cargo[j].label == cl) {
_cargo[i] = _default_cargo[j];
/* Populate the available cargo mask */
SETBIT(_cargo_mask, i);
break;
}
}
}
}
const CargoSpec *GetCargo(CargoID c)
{
assert(c < lengthof(_cargo));
return &_cargo[c];
}
bool CargoSpec::IsValid() const
{
return bitnum != INVALID_CARGO;
}
CargoID GetCargoIDByLabel(CargoLabel cl)
{
for (CargoID c = 0; c < lengthof(_cargo); c++) {
if (_cargo[c].bitnum == INVALID_CARGO) continue;
if (_cargo[c].label == cl) return c;
}
/* No matching label was found, so it is invalid */
return CT_INVALID;
}
/** Find the CargoID of a 'bitnum' value.
* @param bitnum 'bitnum' to find.
* @return First CargoID with the given bitnum, or CT_INVALID if not found.
*/
CargoID GetCargoIDByBitnum(uint8 bitnum)
{
if (bitnum == INVALID_CARGO) return CT_INVALID;
for (CargoID c = 0; c < lengthof(_cargo); c++) {
if (_cargo[c].bitnum == bitnum) return c;
}
/* No matching label was found, so it is invalid */
return CT_INVALID;
}
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