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Location: cpp/openttd-patchpack/source/newgrf_station.c - annotation
r3669:6c54dfa7ae46
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(svn r4584) CodeChange : Cleanup of industry_cmd (Step-3).
Renaming GetIndustrySpecification to GetIndustrySpec. Looks better.
Removing the _industry_prod_up/down/close_strings
in favor of IndustrySpec.closure/production_up/down_text;
A few reformatting along the way.
Work of tfc_team
Renaming GetIndustrySpecification to GetIndustrySpec. Looks better.
Removing the _industry_prod_up/down/close_strings
in favor of IndustrySpec.closure/production_up/down_text;
A few reformatting along the way.
Work of tfc_team
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/** @file newgrf_station.c Functions for dealing with station classes and custom stations. */
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "sprite.h"
#include "table/strings.h"
#include "station.h"
#include "station_map.h"
#include "newgrf_station.h"
static StationClass station_classes[STAT_CLASS_MAX];
/**
* Reset station classes to their default state.
* This includes initialising the Default and Waypoint classes with an empty
* entry, for standard stations and waypoints.
*/
void ResetStationClasses(void)
{
StationClassID i;
for (i = 0; i < STAT_CLASS_MAX; i++) {
station_classes[i].id = 0;
station_classes[i].name = STR_EMPTY;
station_classes[i].stations = 0;
free(station_classes[i].spec);
station_classes[i].spec = NULL;
}
// Set up initial data
station_classes[0].id = 'DFLT';
station_classes[0].name = STR_STAT_CLASS_DFLT;
station_classes[0].stations = 1;
station_classes[0].spec = malloc(sizeof(*station_classes[0].spec));
station_classes[0].spec[0] = NULL;
station_classes[1].id = 'WAYP';
station_classes[1].name = STR_STAT_CLASS_WAYP;
station_classes[1].stations = 1;
station_classes[1].spec = malloc(sizeof(*station_classes[1].spec));
station_classes[1].spec[0] = NULL;
}
/**
* Allocate a station class for the given class id.
* @param classid A 32 bit value identifying the class.
* @return Index into station_classes of allocated class.
*/
StationClassID AllocateStationClass(uint32 class)
{
StationClassID i;
for (i = 0; i < STAT_CLASS_MAX; i++) {
if (station_classes[i].id == class) {
// ClassID is already allocated, so reuse it.
return i;
} else if (station_classes[i].id == 0) {
// This class is empty, so allocate it to the ClassID.
station_classes[i].id = class;
return i;
}
}
DEBUG(grf, 2)("StationClassAllocate: Already allocated %d classes, using default.", STAT_CLASS_MAX);
return STAT_CLASS_DFLT;
}
/** Set the name of a custom station class */
void SetStationClassName(StationClassID sclass, StringID name)
{
assert(sclass < STAT_CLASS_MAX);
station_classes[sclass].name = name;
}
/** Retrieve the name of a custom station class */
StringID GetStationClassName(StationClassID sclass)
{
assert(sclass < STAT_CLASS_MAX);
return station_classes[sclass].name;
}
/** Build a list of station class name StringIDs to use in a dropdown list
* @return Pointer to a (static) array of StringIDs
*/
StringID *BuildStationClassDropdown(void)
{
/* Allow room for all station classes, plus a terminator entry */
static StringID names[STAT_CLASS_MAX + 1];
uint i;
/* Add each name */
for (i = 0; i < STAT_CLASS_MAX && station_classes[i].id != 0; i++) {
names[i] = station_classes[i].name;
}
/* Terminate the list */
names[i] = INVALID_STRING_ID;
return names;
}
/**
* Get the number of station classes in use.
* @return Number of station classes.
*/
uint GetNumStationClasses(void)
{
uint i;
for (i = 0; i < STAT_CLASS_MAX && station_classes[i].id != 0; i++);
return i;
}
/**
* Return the number of stations for the given station class.
* @param sclass Index of the station class.
* @return Number of stations in the class.
*/
uint GetNumCustomStations(StationClassID sclass)
{
assert(sclass < STAT_CLASS_MAX);
return station_classes[sclass].stations;
}
/**
* Tie a station spec to its station class.
* @param spec The station spec.
*/
void SetCustomStation(StationSpec *spec)
{
StationClass *station_class;
int i;
assert(spec->sclass < STAT_CLASS_MAX);
station_class = &station_classes[spec->sclass];
i = station_class->stations++;
station_class->spec = realloc(station_class->spec, station_class->stations * sizeof(*station_class->spec));
station_class->spec[i] = spec;
}
/**
* Retrieve a station spec from a class.
* @param sclass Index of the station class.
* @param station The station index with the class.
* @return The station spec.
*/
const StationSpec *GetCustomStation(StationClassID sclass, uint station)
{
assert(sclass < STAT_CLASS_MAX);
if (station < station_classes[sclass].stations)
return station_classes[sclass].spec[station];
// If the custom station isn't defined any more, then the GRF file
// probably was not loaded.
return NULL;
}
static const RealSpriteGroup *ResolveStationSpriteGroup(const SpriteGroup *spg, const Station *st)
{
if (spg == NULL) return NULL;
switch (spg->type) {
case SGT_REAL:
return &spg->g.real;
case SGT_DETERMINISTIC: {
const DeterministicSpriteGroup *dsg = &spg->g.determ;
SpriteGroup *target;
int value = -1;
byte variable = dsg->adjusts[0].variable;
if ((variable >> 6) == 0) {
/* General property */
value = GetDeterministicSpriteValue(variable);
} else {
if (st == NULL) {
/* We are in a build dialog of something,
* and we are checking for something undefined.
* That means we should get the first target
* (NOT the default one). */
if (dsg->num_ranges > 0) {
target = dsg->ranges[0].group;
} else {
target = dsg->default_group;
}
return ResolveStationSpriteGroup(target, NULL);
}
/* Station-specific property. */
if (dsg->var_scope == VSG_SCOPE_PARENT) {
/* TODO: Town structure. */
} else /* VSG_SELF */ {
if (variable == 0x40 || variable == 0x41) {
/* FIXME: This is ad hoc only
* for waypoints. */
value = 0x01010000;
} else {
/* TODO: Only small fraction done. */
// TTDPatch runs on little-endian arch;
// Variable is 0x70 + offset in the TTD's station structure
switch (variable - 0x70) {
case 0x80: value = st->facilities; break;
case 0x81: value = st->airport_type; break;
case 0x82: value = st->truck_stops->status; break;
case 0x83: value = st->bus_stops->status; break;
case 0x86: value = st->airport_flags & 0xFFFF; break;
case 0x87: value = st->airport_flags & 0xFF; break;
case 0x8A: value = st->build_date; break;
}
}
}
}
target = value != -1 ? EvalDeterministicSpriteGroup(dsg, value) : dsg->default_group;
return ResolveStationSpriteGroup(target, st);
}
default:
case SGT_RANDOMIZED:
DEBUG(grf, 6)("I don't know how to handle random spritegroups yet!");
return NULL;
}
}
uint32 GetCustomStationRelocation(const StationSpec *spec, const Station *st, byte ctype)
{
const RealSpriteGroup *rsg = ResolveStationSpriteGroup(spec->spritegroup[ctype], st);
if (rsg == NULL) return 0;
if (rsg->num_loading != 0) return rsg->loading[0]->g.result.sprite;
if (rsg->num_loaded != 0) return rsg->loaded[0]->g.result.sprite;
DEBUG(grf, 6)("Custom station 0x%08x::0x%02x has no sprites associated.",
spec->grfid, spec->localidx);
/* This is what gets subscribed of dtss->image in newgrf.c,
* so it's probably kinda "default offset". Try to use it as
* emergency measure. */
return 0;
}
/**
* Allocate a StationSpec to a Station. This is called once per build operation.
* @param spec StationSpec to allocate.
* @param st Station to allocate it to.
* @param exec Whether to actually allocate the spec.
* @return Index within the Station's spec list, or -1 if the allocation failed.
*/
int AllocateSpecToStation(const StationSpec *spec, Station *st, bool exec)
{
uint i;
if (spec == NULL) return 0;
/* Check if this spec has already been allocated */
for (i = 1; i < st->num_specs && i < 256; i++) {
if (st->speclist[i].spec == spec) return i;
}
for (i = 1; i < st->num_specs && i < 256; i++) {
if (st->speclist[i].spec == NULL && st->speclist[i].grfid == 0) break;
}
if (i < 256) {
if (exec) {
if (i >= st->num_specs) {
st->num_specs = i + 1;
st->speclist = realloc(st->speclist, st->num_specs * sizeof(*st->speclist));
if (st->num_specs == 2) {
/* Initial allocation */
st->speclist[0].spec = NULL;
st->speclist[0].grfid = 0;
st->speclist[0].localidx = 0;
}
}
st->speclist[i].spec = spec;
st->speclist[i].grfid = spec->grfid;
st->speclist[i].localidx = spec->localidx;
}
return i;
}
return -1;
}
/** Deallocate a StationSpec from a Station. Called when removing a single station tile.
* @param st Station to work with.
* @param specindex Index of the custom station within the Station's spec list.
* @return Indicates whether the StationSpec was deallocated.
*/
bool DeallocateSpecFromStation(Station *st, byte specindex)
{
bool freeable = true;
/* specindex of 0 (default) is never freeable */
if (specindex == 0) return false;
/* Check all tiles over the station to check if the specindex is still in use */
BEGIN_TILE_LOOP(tile, st->trainst_w, st->trainst_h, st->train_tile) {
if (IsTileType(tile, MP_STATION) && GetStationIndex(tile) == st->index && IsRailwayStation(tile) && GetCustomStationSpecIndex(tile) == specindex) {
freeable = false;
break;
}
} END_TILE_LOOP(tile, st->trainst_w, st->trainst_h, st->train_tile)
if (freeable) {
/* This specindex is no longer in use, so deallocate it */
st->speclist[specindex].spec = NULL;
st->speclist[specindex].grfid = 0;
st->speclist[specindex].localidx = 0;
/* If this was the highest spec index, reallocate */
if (specindex == st->num_specs - 1) {
for (; st->speclist[st->num_specs - 1].grfid == 0 && st->num_specs > 1; st->num_specs--);
if (st->num_specs > 1) {
st->speclist = realloc(st->speclist, st->num_specs * sizeof(*st->speclist));
} else {
free(st->speclist);
st->num_specs = 0;
st->speclist = NULL;
}
}
}
return freeable;
}
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