cpp/openttd-patchpack/source Files · src/cargotype.cpp

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Location: cpp/openttd-patchpack/source/src/cargotype.cpp

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rubidium

(svn r15246) -Fix [FS#2577]: close all windows *before* starting a new game/loading a game instead of doing that as one of the latest steps of loading the game. This caused, in some cases, the NewGRF settings to be reset when the game was already loaded resulting in instant desyncs when joining a network game

/* $Id$ */

/** @file cargotype.cpp Implementation of cargos. */

#include "stdafx.h"
#include "openttd.h"
#include "newgrf_cargo.h"
#include "cargotype.h"
#include "core/bitmath_func.hpp"

#include "table/sprites.h"
#include "table/strings.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];
			if (_cargo[i].bitnum != INVALID_CARGO) 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;
}