(svn r3167) - NewGRF: Start moving custom station code to separate files.
Rewrite handling of station classes.
Allow for more than 8 station tile layouts.
Start of code to unload custom stations.
pull/155/head
peter1138
19 years ago
parent
ce9f2fe823
commit
12009af1c5
@ -0,0 +1,115 @@
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/* $Id$ */
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/** @file station_newgrf.c Functions for dealing with station classes and custom stations. */
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#include "stdafx.h"
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#include "openttd.h"
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#include "debug.h"
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#include "sprite.h"
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#include "station_newgrf.h"
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static StationClass station_classes[STAT_CLASS_MAX];
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/**
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* Reset station classes to their default state.
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* This includes initialising the Default and Waypoint classes with an empty
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* entry, for standard stations and waypoints.
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*/
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void ResetStationClasses(void)
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{
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StationClassID i;
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for (i = 0; i < STAT_CLASS_MAX; i++) {
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station_classes[i].id = 0;
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free(station_classes[i].name);
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station_classes[i].name = NULL;
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station_classes[i].stations = 0;
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free(station_classes[i].spec);
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station_classes[i].spec = NULL;
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}
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// Set up initial data
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station_classes[0].id = 'DFLT';
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station_classes[0].name = strdup("Default");
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station_classes[0].stations = 1;
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station_classes[0].spec = malloc(sizeof(*station_classes[0].spec));
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station_classes[0].spec[0] = NULL;
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station_classes[1].id = 'WAYP';
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station_classes[1].name = strdup("Waypoints");
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station_classes[1].stations = 1;
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station_classes[1].spec = malloc(sizeof(*station_classes[1].spec));
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station_classes[1].spec[0] = NULL;
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}
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/**
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* Allocate a station class for the given class id.
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* @param classid A 32 bit value identifying the class.
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* @return Index into station_classes of allocated class.
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*/
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StationClassID AllocateStationClass(uint32 class)
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{
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StationClassID i;
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for (i = 0; i < STAT_CLASS_MAX; i++) {
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if (station_classes[i].id == class) {
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// ClassID is already allocated, so reuse it.
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return i;
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} else if (station_classes[i].id == 0) {
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// This class is empty, so allocate it to the ClassID.
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station_classes[i].id = class;
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return i;
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}
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}
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DEBUG(grf, 2)("StationClassAllocate: Already allocated %d classes, using default.", STAT_CLASS_MAX);
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return STAT_CLASS_DFLT;
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}
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/**
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* Return the number of stations for the given station class.
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* @param sclass Index of the station class.
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* @return Number of stations in the class.
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*/
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uint GetNumCustomStations(StationClassID sclass)
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{
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assert(sclass < STAT_CLASS_MAX);
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return station_classes[sclass].stations;
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}
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/**
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* Tie a station spec to its station class.
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* @param spec The station spec.
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*/
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void SetCustomStation(StationSpec *spec)
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{
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StationClass *station_class;
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int i;
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assert(spec->sclass < STAT_CLASS_MAX);
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station_class = &station_classes[spec->sclass];
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i = station_class->stations++;
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station_class->spec = realloc(station_class->spec, station_class->stations * sizeof(*station_class->spec));
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station_class->spec[i] = spec;
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}
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/**
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* Retrieve a station spec from a class.
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* @param sclass Index of the station class.
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* @param station The station index with the class.
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* @return The station spec.
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*/
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const StationSpec *GetCustomStation(StationClassID sclass, uint station)
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{
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assert(sclass < STAT_CLASS_MAX);
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if (station < station_classes[sclass].stations)
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return station_classes[sclass].spec[station];
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// If the custom station isn't defined any more, then the GRF file
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// probably was not loaded.
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return NULL;
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}
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@ -0,0 +1,77 @@
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/* $Id$ */
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/** @file station_newgrf.h Header file for NewGRF stations */
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#ifndef STATION_NEWGRF_H
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#define STATION_NEWGRF_H
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#include "engine.h"
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typedef enum {
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STAT_CLASS_DFLT, ///< Default station class.
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STAT_CLASS_WAYP, ///< Waypoint class.
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STAT_CLASS_MAX = 16, ///< Maximum number of classes.
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} StationClassID;
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/* Station layout for given dimensions - it is a two-dimensional array
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* where index is computed as (x * platforms) + platform. */
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typedef byte *StationLayout;
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typedef struct stationspec {
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uint32 grfid; ///< ID of GRF file station belongs to.
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int localidx; ///< Index within GRF file of station.
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StationClassID sclass; ///< The class to which this spec belongs.
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/**
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* Bitmask of number of platforms available for the station.
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* 0..6 correpsond to 1..7, while bit 7 corresponds to >7 platforms.
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*/
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byte allowed_platforms;
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/**
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* Bitmask of platform lengths available for the station.
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* 0..6 correpsond to 1..7, while bit 7 corresponds to >7 tiles long.
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*/
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byte allowed_lengths;
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/** Number of tile layouts.
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* A minimum of 8 is required is required for stations.
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* 0-1 = plain platform
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* 2-3 = platform with building
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* 4-5 = platform with roof, left side
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* 6-7 = platform with roof, right side
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*/
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int tiles;
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DrawTileSprites *renderdata; ///< Array of tile layouts.
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byte lengths;
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byte *platforms;
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StationLayout **layouts;
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/**
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* NUM_GLOBAL_CID sprite groups.
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* Used for obtaining the sprite offset of custom sprites, and for
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* evaluating callbacks.
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*/
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SpriteGroup *spritegroup[NUM_GLOBAL_CID];
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} StationSpec;
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/**
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* Struct containing information relating to station classes.
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*/
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typedef struct stationclass {
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uint32 id; ///< ID of this class, e.g. 'DFLT', 'WAYP', etc.
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char *name; ///< Name of this class.
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uint stations; ///< Number of stations in this class.
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StationSpec **spec; ///< Array of station specifications.
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} StationClass;
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void ResetStationClasses(void);
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StationClassID AllocateStationClass(uint32 class);
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void SetStationClassName(StationClassID sclass, const char *name);
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uint GetNumCustomStations(StationClassID sclass);
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void SetCustomStation(StationSpec *spec);
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const StationSpec *GetCustomStation(StationClassID sclass, uint station);
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#endif /* STATION_NEWGRF_H */
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