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Location: cpp/openttd-patchpack/source/src/newgrf_townname.cpp
r7882:cdf03a4ac84a
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(svn r11433) -Fix: starting OpenTTD with DOS files made it look weird out of the box.
-Change: make extra sprites (the ones not in the TTD GRFs) replaceable using Action 5.
-Feature: make replacing contiguous subsets of sprites in for some types possible in Action 5.
Note to GRF authors: when you replaced OpenTTD sprites that are not from the TTD GRF files using Action A, your GRF will not have the intended result anymore as the sprite numbers have changed. You should replace the Action A with an Action 5 from now on.
-Change: make extra sprites (the ones not in the TTD GRFs) replaceable using Action 5.
-Feature: make replacing contiguous subsets of sprites in for some types possible in Action 5.
Note to GRF authors: when you replaced OpenTTD sprites that are not from the TTD GRF files using Action A, your GRF will not have the intended result anymore as the sprite numbers have changed. You should replace the Action A with an Action 5 from now on.
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/** @file newgrf_townname.cpp
* Implementation of Action 0F "universal holder" structure and functions.
* This file implements a linked-lists of townname generators,
* holding everything that the newgrf action 0F will send over to OpenTTD.
*/
#include "stdafx.h"
#include "openttd.h"
#include "table/strings.h"
#include "newgrf_townname.h"
#include "string.h"
static GRFTownName *_grf_townnames = NULL;
GRFTownName *GetGRFTownName(uint32 grfid)
{
GRFTownName *t = _grf_townnames;
for (; t != NULL; t = t->next) {
if (t->grfid == grfid) return t;
}
return NULL;
}
GRFTownName *AddGRFTownName(uint32 grfid)
{
GRFTownName *t = GetGRFTownName(grfid);
if (t == NULL) {
t = CallocT<GRFTownName>(1);
t->grfid = grfid;
t->next = _grf_townnames;
_grf_townnames = t;
}
return t;
}
void DelGRFTownName(uint32 grfid)
{
GRFTownName *t = _grf_townnames;
GRFTownName *p = NULL;
for (;t != NULL; p = t, t = t->next) if (t->grfid == grfid) break;
if (t != NULL) {
for (int i = 0; i < 128; i++) {
for (int j = 0; j < t->nbparts[i]; j++) {
for (int k = 0; k < t->partlist[i][j].partcount; k++) {
if (!HASBIT(t->partlist[i][j].parts[k].prob, 7)) free(t->partlist[i][j].parts[k].data.text);
}
free(t->partlist[i][j].parts);
}
free(t->partlist[i]);
}
if (p != NULL) {
p->next = t->next;
} else {
_grf_townnames = t->next;
}
free(t);
}
}
static char *RandomPart(char *buf, GRFTownName *t, uint32 seed, byte id, const char *last)
{
assert(t != NULL);
for (int i = 0; i < t->nbparts[id]; i++) {
byte count = t->partlist[id][i].bitcount;
uint16 maxprob = t->partlist[id][i].maxprob;
uint32 r = (GB(seed, t->partlist[id][i].bitstart, count) * maxprob) >> count;
for (int j = 0; j < t->partlist[id][i].partcount; j++) {
byte prob = t->partlist[id][i].parts[j].prob;
maxprob -= GB(prob, 0, 7);
if (maxprob > r) continue;
if (HASBIT(prob, 7)) {
buf = RandomPart(buf, t, seed, t->partlist[id][i].parts[j].data.id, last);
} else {
buf = strecat(buf, t->partlist[id][i].parts[j].data.text, last);
}
break;
}
}
return buf;
}
char *GRFTownNameGenerate(char *buf, uint32 grfid, uint16 gen, uint32 seed, const char *last)
{
strecpy(buf, "", last);
for (GRFTownName *t = _grf_townnames; t != NULL; t = t->next) {
if (t->grfid == grfid) {
assert(gen < t->nb_gen);
buf = RandomPart(buf, t, seed, t->id[gen], last);
break;
}
}
return buf;
}
StringID *GetGRFTownNameList()
{
int nb_names = 0, n = 0;
for (GRFTownName *t = _grf_townnames; t != NULL; t = t->next) nb_names += t->nb_gen;
StringID *list = MallocT<StringID>(nb_names + 1);
for (GRFTownName *t = _grf_townnames; t != NULL; t = t->next) {
for (int j = 0; j < t->nb_gen; j++) list[n++] = t->name[j];
}
list[n] = INVALID_STRING_ID;
return list;
}
void CleanUpGRFTownNames()
{
while (_grf_townnames != NULL) DelGRFTownName(_grf_townnames->grfid);
}
uint32 GetGRFTownNameId(int gen)
{
for (GRFTownName *t = _grf_townnames; t != NULL; t = t->next) {
if (gen < t->nb_gen) return t->grfid;
gen -= t->nb_gen;
}
/* Fallback to no NewGRF */
return 0;
}
uint16 GetGRFTownNameType(int gen)
{
for (GRFTownName *t = _grf_townnames; t != NULL; t = t->next) {
if (gen < t->nb_gen) return gen;
gen -= t->nb_gen;
}
/* Fallback to english original */
return SPECSTR_TOWNNAME_ENGLISH;
}
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