OpenTTD-patches/airport.c
tron 47137cefb7 (svn r3078) Some more stuff, which piled up:
- const, whitespace, indentation, bracing, GB/SB, pointless casts
- use the trinary operator where appropriate
- data types (uint[] -> AcceptedCargo, ...)
- if cascade -> switch
- if (ptr) -> if (ptr != NULL)
- DeMorgan's Law
- Fix some comments
- 0 -> '\0', change magic numbers to symbolic constants
2005-10-23 13:04:44 +00:00

383 lines
11 KiB
C

/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "map.h"
#include "airport.h"
#include "macros.h"
#include "variables.h"
AirportFTAClass *CountryAirport;
AirportFTAClass *CityAirport;
AirportFTAClass *Heliport, *Oilrig;
AirportFTAClass *MetropolitanAirport;
AirportFTAClass *InternationalAirport;
static void AirportFTAClass_Constructor(AirportFTAClass *Airport,
const byte *terminals, const byte *helipads,
const byte entry_point, const byte acc_planes,
const AirportFTAbuildup *FA,
const TileIndexDiffC *depots, const byte nof_depots);
static void AirportFTAClass_Destructor(AirportFTAClass *Airport);
static uint16 AirportGetNofElements(const AirportFTAbuildup *FA);
static void AirportBuildAutomata(AirportFTAClass *Airport, const AirportFTAbuildup *FA);
static byte AirportTestFTA(const AirportFTAClass *Airport);
/*static void AirportPrintOut(const AirportFTAClass *Airport, const bool full_report);
static byte AirportBlockToString(uint32 block);*/
void InitializeAirports(void)
{
// country airport
CountryAirport = malloc(sizeof(AirportFTAClass));
AirportFTAClass_Constructor(
CountryAirport,
_airport_terminal_country,
NULL,
16,
ALL,
_airport_fta_country,
_airport_depots_country,
lengthof(_airport_depots_country)
);
// city airport
CityAirport = malloc(sizeof(AirportFTAClass));
AirportFTAClass_Constructor(
CityAirport,
_airport_terminal_city,
NULL,
19,
ALL,
_airport_fta_city,
_airport_depots_city,
lengthof(_airport_depots_city)
);
// metropolitan airport
MetropolitanAirport = malloc(sizeof(AirportFTAClass));
AirportFTAClass_Constructor(
MetropolitanAirport,
_airport_terminal_metropolitan,
NULL,
20,
ALL,
_airport_fta_metropolitan,
_airport_depots_metropolitan,
lengthof(_airport_depots_metropolitan)
);
// international airport
InternationalAirport = (AirportFTAClass *)malloc(sizeof(AirportFTAClass));
AirportFTAClass_Constructor(
InternationalAirport,
_airport_terminal_international,
_airport_helipad_international,
37,
ALL,
_airport_fta_international,
_airport_depots_international,
lengthof(_airport_depots_international)
);
// heliport, oilrig
Heliport = (AirportFTAClass *)malloc(sizeof(AirportFTAClass));
AirportFTAClass_Constructor(
Heliport,
NULL,
_airport_helipad_heliport_oilrig,
7,
HELICOPTERS_ONLY,
_airport_fta_heliport_oilrig,
NULL,
0
);
Oilrig = Heliport; // exactly the same structure for heliport/oilrig, so share state machine
}
void UnInitializeAirports(void)
{
AirportFTAClass_Destructor(CountryAirport);
AirportFTAClass_Destructor(CityAirport);
AirportFTAClass_Destructor(Heliport);
AirportFTAClass_Destructor(MetropolitanAirport);
AirportFTAClass_Destructor(InternationalAirport);
}
static void AirportFTAClass_Constructor(AirportFTAClass *Airport,
const byte *terminals, const byte *helipads,
const byte entry_point, const byte acc_planes,
const AirportFTAbuildup *FA,
const TileIndexDiffC *depots, const byte nof_depots)
{
byte nofterminals, nofhelipads;
byte nofterminalgroups = 0;
byte nofhelipadgroups = 0;
const byte * curr;
int i;
nofterminals = nofhelipads = 0;
//now we read the number of terminals we have
if (terminals != NULL) {
i = terminals[0];
nofterminalgroups = i;
curr = terminals;
while (i-- > 0) {
curr++;
assert(*curr != 0); //we don't want to have an empty group
nofterminals += *curr;
}
}
Airport->terminals = terminals;
//read helipads
if (helipads != NULL) {
i = helipads[0];
nofhelipadgroups = i;
curr = helipads;
while (i-- > 0) {
curr++;
assert(*curr != 0); //no empty groups please
nofhelipads += *curr;
}
}
Airport->helipads = helipads;
// if there are more terminals than 6, internal variables have to be changed, so don't allow that
// same goes for helipads
if (nofterminals > MAX_TERMINALS) { printf("Currently only maximum of %2d terminals are supported (you wanted %2d)\n", MAX_TERMINALS, nofterminals);}
if (nofhelipads > MAX_HELIPADS) { printf("Currently only maximum of %2d helipads are supported (you wanted %2d)\n", MAX_HELIPADS, nofhelipads);}
// terminals/helipads are divided into groups. Groups are computed by dividing the number
// of terminals by the number of groups. Half in half. If #terminals is uneven, first group
// will get the less # of terminals
assert(nofterminals <= MAX_TERMINALS);
assert(nofhelipads <= MAX_HELIPADS);
Airport->nofelements = AirportGetNofElements(FA);
// check
if (entry_point >= Airport->nofelements) {printf("Entry point (%2d) must be within the airport positions (which is max %2d)\n", entry_point, Airport->nofelements);}
assert(entry_point < Airport->nofelements);
Airport->acc_planes = acc_planes;
Airport->entry_point = entry_point;
Airport->airport_depots = depots;
Airport->nof_depots = nof_depots;
// build the state machine
AirportBuildAutomata(Airport, FA);
DEBUG(misc, 1) ("#Elements %2d; #Terminals %2d in %d group(s); #Helipads %2d in %d group(s); Entry Point %d",
Airport->nofelements, nofterminals, nofterminalgroups, nofhelipads, nofhelipadgroups, Airport->entry_point
);
{
byte ret = AirportTestFTA(Airport);
if (ret != MAX_ELEMENTS) printf("ERROR with element: %d\n", ret - 1);
assert(ret == MAX_ELEMENTS);
}
// print out full information
// true -- full info including heading, block, etc
// false -- short info, only position and next position
//AirportPrintOut(Airport, false);
}
static void AirportFTAClass_Destructor(AirportFTAClass *Airport)
{
int i;
AirportFTA *current, *next;
for (i = 0; i < Airport->nofelements; i++) {
current = Airport->layout[i].next_in_chain;
while (current != NULL) {
next = current->next_in_chain;
free(current);
current = next;
};
}
free(Airport->layout);
free(Airport);
}
static uint16 AirportGetNofElements(const AirportFTAbuildup *FA)
{
int i;
uint16 nofelements = 0;
int temp = FA[0].position;
for (i = 0; i < MAX_ELEMENTS; i++) {
if (temp != FA[i].position) {
nofelements++;
temp = FA[i].position;
}
if (FA[i].position == MAX_ELEMENTS) break;
}
return nofelements;
}
static void AirportBuildAutomata(AirportFTAClass *Airport, const AirportFTAbuildup *FA)
{
AirportFTA *FAutomata;
AirportFTA *current;
uint16 internalcounter, i;
FAutomata = malloc(sizeof(AirportFTA) * Airport->nofelements);
Airport->layout = FAutomata;
internalcounter = 0;
for (i = 0; i < Airport->nofelements; i++) {
current = &Airport->layout[i];
current->position = FA[internalcounter].position;
current->heading = FA[internalcounter].heading;
current->block = FA[internalcounter].block;
current->next_position = FA[internalcounter].next_in_chain;
// outgoing nodes from the same position, create linked list
while (current->position == FA[internalcounter + 1].position) {
AirportFTA* newNode = malloc(sizeof(AirportFTA));
newNode->position = FA[internalcounter + 1].position;
newNode->heading = FA[internalcounter + 1].heading;
newNode->block = FA[internalcounter + 1].block;
newNode->next_position = FA[internalcounter + 1].next_in_chain;
// create link
current->next_in_chain = newNode;
current = current->next_in_chain;
internalcounter++;
} // while
current->next_in_chain = NULL;
internalcounter++;
}
}
static byte AirportTestFTA(const AirportFTAClass *Airport)
{
byte position, i, next_element;
AirportFTA *temp;
next_element = 0;
for (i = 0; i < Airport->nofelements; i++) {
position = Airport->layout[i].position;
if (position != next_element) return i;
temp = &Airport->layout[i];
do {
if (temp->heading > MAX_HEADINGS && temp->heading != 255) return i;
if (temp->heading == 0 && temp->next_in_chain != 0) return i;
if (position != temp->position) return i;
if (temp->next_position >= Airport->nofelements) return i;
temp = temp->next_in_chain;
} while (temp != NULL);
next_element++;
}
return MAX_ELEMENTS;
}
#if 0
static const char* const _airport_heading_strings[] = {
"TO_ALL",
"HANGAR",
"TERM1",
"TERM2",
"TERM3",
"TERM4",
"TERM5",
"TERM6",
"HELIPAD1",
"HELIPAD2",
"TAKEOFF",
"STARTTAKEOFF",
"ENDTAKEOFF",
"HELITAKEOFF",
"FLYING",
"LANDING",
"ENDLANDING",
"HELILANDING",
"HELIENDLANDING",
"DUMMY" // extra heading for 255
};
static void AirportPrintOut(const AirportFTAClass *Airport, const bool full_report)
{
AirportFTA *temp;
uint16 i;
byte heading;
printf("(P = Current Position; NP = Next Position)\n");
for (i = 0; i < Airport->nofelements; i++) {
temp = &Airport->layout[i];
if (full_report) {
heading = (temp->heading == 255) ? MAX_HEADINGS+1 : temp->heading;
printf("Pos:%2d NPos:%2d Heading:%15s Block:%2d\n", temp->position, temp->next_position,
_airport_heading_strings[heading], AirportBlockToString(temp->block));
} else {
printf("P:%2d NP:%2d", temp->position, temp->next_position);
}
while (temp->next_in_chain != NULL) {
temp = temp->next_in_chain;
if (full_report) {
heading = (temp->heading == 255) ? MAX_HEADINGS+1 : temp->heading;
printf("Pos:%2d NPos:%2d Heading:%15s Block:%2d\n", temp->position, temp->next_position,
_airport_heading_strings[heading], AirportBlockToString(temp->block));
} else {
printf("P:%2d NP:%2d", temp->position, temp->next_position);
}
}
printf("\n");
}
}
static byte AirportBlockToString(uint32 block)
{
byte i = 0;
if (block & 0xffff0000) { block >>= 16; i += 16; }
if (block & 0x0000ff00) { block >>= 8; i += 8; }
if (block & 0x000000f0) { block >>= 4; i += 4; }
if (block & 0x0000000c) { block >>= 2; i += 2; }
if (block & 0x00000002) { i += 1; }
return i;
}
#endif
const AirportFTAClass* GetAirport(const byte airport_type)
{
AirportFTAClass *Airport = NULL;
//FIXME -- AircraftNextAirportPos_and_Order -> Needs something nicer, don't like this code
// needs constant change if more airports are added
switch (airport_type) {
case AT_SMALL: Airport = CountryAirport; break;
case AT_LARGE: Airport = CityAirport; break;
case AT_METROPOLITAN: Airport = MetropolitanAirport; break;
case AT_HELIPORT: Airport = Heliport; break;
case AT_OILRIG: Airport = Oilrig; break;
case AT_INTERNATIONAL: Airport = InternationalAirport; break;
default:
#ifdef DEBUG__
printf("Airport AircraftNextAirportPos_and_Order not yet implemented\n");
#endif
assert(airport_type <= AT_INTERNATIONAL);
}
return Airport;
}
uint32 GetValidAirports(void)
{
uint32 bytemask = _avail_aircraft; /// sets the first 3 bytes, 0 - 2, @see AdjustAvailAircraft()
// 1980-1-1 is --> 21915
// 1990-1-1 is --> 25568
if (_date >= 21915) {SETBIT(bytemask, 3);} // metropilitan airport 1980
if (_date >= 25568) {SETBIT(bytemask, 4);} // international airport 1990
return bytemask;
}