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gamemap.cc
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/**
** Gamemap.cc - X-windows Ultima7 map browser.
**/
/*
*
* Copyright (C) 1998-1999 Jeffrey S. Freedman
* Copyright (C) 2000-2013 The Exult Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <cstdlib>
#include <cstring>
#include <cstdarg>
#include <cstdio>
#include "gamemap.h"
#include "objs.h"
#include "chunks.h"
#include "mappatch.h"
#include "fnames.h"
#include "utils.h"
#include "shapeinf.h"
#include "objiter.h"
#include "Flex.h"
#include "exceptions.h"
#include "animate.h"
#include "barge.h"
#include "spellbook.h"
#include "virstone.h"
#include "egg.h"
#include "jawbone.h"
#include "actors.h" /* For Dead_body, which should be moved. */
#include "ucsched.h"
#include "gamewin.h" /* With some work, could get rid of this. */
#include "game.h"
#include "effects.h"
#include "objs/objiter.cc" /* Yes we #include the .cc here on purpose! Please don't "fix" this */
#include "databuf.h"
#include "weaponinf.h"
#include <fstream>
#include <sstream>
#include "ios_state.hpp"
using std::cerr;
using std::cout;
using std::endl;
using std::istream;
using std::ifstream;
using std::istringstream;
using std::ios;
using std::memcpy;
using std::memset;
using std::ofstream;
using std::ostringstream;
using std::string;
using std::strlen;
using std::vector;
using std::pair;
vector<Chunk_terrain *> *Game_map::chunk_terrains = 0;
std::ifstream *Game_map::chunks = 0;
bool Game_map::v2_chunks = false;
bool Game_map::read_all_terrain = false;
bool Game_map::chunk_terrains_modified = false;
const int V2_CHUNK_HDR_SIZE = 4 + 4 + 2; // 0xffff, "exlt", vers.
static char v2hdr[] = {static_cast<char>(0xff), static_cast<char>(0xff),
static_cast<char>(0xff), static_cast<char>(0xff),
'e', 'x', 'l', 't', 0, 0
};
/*
* Create a chunk.
*/
Map_chunk *Game_map::create_chunk(
int cx, int cy
) {
return (objects[cx][cy] = new Map_chunk(this, cx, cy));
}
/*
* Read in a terrain chunk.
*/
Chunk_terrain *Game_map::read_terrain(
int chunk_num // Want this one from u7chunks.
) {
const int ntiles = c_tiles_per_chunk * c_tiles_per_chunk;
assert(chunk_num >= 0 && static_cast<unsigned>(chunk_num) < chunk_terrains->size());
unsigned char buf[ntiles * 3];
if (v2_chunks) {
chunks->seekg(V2_CHUNK_HDR_SIZE + chunk_num * ntiles * 3);
chunks->read(reinterpret_cast<char *>(buf), ntiles * 3);
} else {
chunks->seekg(chunk_num * ntiles * 2);
chunks->read(reinterpret_cast<char *>(buf), ntiles * 2);
}
Chunk_terrain *ter = new Chunk_terrain(&buf[0], v2_chunks);
if (static_cast<unsigned>(chunk_num) >= chunk_terrains->size())
chunk_terrains->resize(chunk_num + 1);
(*chunk_terrains)[chunk_num] = ter;
return ter;
}
/*
* Create game window.
*/
Game_map::Game_map(
int n
) :
num(n), didinit(false),
map_modified(false), caching_out(0),
map_patches(new Map_patch_collection) {
}
/*
* Deleting map.
*/
Game_map::~Game_map(
) {
clear(); // Delete all objects, chunks.
delete chunks;
delete map_patches;
}
/*
* Init. the static data.
*/
void Game_map::init_chunks(
) {
delete chunks;
chunks = new ifstream;
int num_chunk_terrains;
bool patch_exists = is_system_path_defined("<PATCH>");
if (patch_exists && U7exists(PATCH_U7CHUNKS))
U7open(*chunks, PATCH_U7CHUNKS);
else try {
U7open(*chunks, U7CHUNKS);
} catch (const file_exception &f) {
if (!Game::is_editing() || // Ok if map-editing.
!patch_exists) // But only if patch exists.
throw;
ofstream ochunks; // Create one in 'patch'.
U7open(ochunks, PATCH_U7CHUNKS);
unsigned char buf[16 * 16 * 3];
ochunks.write(v2hdr, sizeof(v2hdr));
memset(&buf[0], 0, sizeof(buf));
ochunks.write(reinterpret_cast<char *>(buf), sizeof(buf));
ochunks.close();
U7open(*chunks, PATCH_U7CHUNKS);
}
char v2buf[V2_CHUNK_HDR_SIZE]; // Check for V2.
chunks->read(v2buf, sizeof(v2buf));
int hdrsize = 0, chunksz = c_tiles_per_chunk * c_tiles_per_chunk * 2;
if (memcmp(v2hdr, v2buf, sizeof(v2buf)) == 0) {
v2_chunks = true;
hdrsize = V2_CHUNK_HDR_SIZE;
chunksz = c_tiles_per_chunk * c_tiles_per_chunk * 3;
}
// Get to end so we can get length.
chunks->seekg(0, ios::end);
// 2 bytes/tile.
num_chunk_terrains = (static_cast<int>(chunks->tellg()) - hdrsize) / chunksz;
if (!chunk_terrains)
chunk_terrains = new vector<Chunk_terrain *>();
// Resize list to hold all.
chunk_terrains->resize(num_chunk_terrains);
read_all_terrain = false;
}
/*
* Initialize for new/restored game.
*/
void Game_map::init(
) {
char fname[128];
if (num == 0)
init_chunks();
map_modified = false;
std::ifstream u7map; // Read in map.
bool nomap = false;
if (is_system_path_defined("<PATCH>") &&
U7exists(get_mapped_name(PATCH_U7MAP, fname)))
U7open(u7map, fname);
else try {
U7open(u7map, get_mapped_name(U7MAP, fname));
} catch (const file_exception & /*f*/) {
if (!Game::is_editing()) // Ok if map-editing.
cerr << "Map file '" << fname << "' not found." <<
endl;
nomap = true;
}
for (int schunk = 0; schunk < c_num_schunks * c_num_schunks; schunk++) {
// Read in the chunk #'s.
unsigned char buf[16 * 16 * 2];
if (nomap)
memset(&buf[0], 0, sizeof(buf));
else
u7map.read(reinterpret_cast<char *>(buf), sizeof(buf));
int scy = 16 * (schunk / 12); // Get abs. chunk coords.
int scx = 16 * (schunk % 12);
const uint8 *mapdata = buf;
// Go through chunks.
for (int cy = 0; cy < 16; cy++)
for (int cx = 0; cx < 16; cx++)
terrain_map[scx + cx][scy + cy] = Read2(mapdata);
}
u7map.close();
// Clear object lists, flags.
memset(objects, 0, sizeof(objects));
memset(schunk_read, 0, sizeof(schunk_read));
memset(schunk_modified, 0, sizeof(schunk_modified));
memset(schunk_cache, 0, sizeof(schunk_cache));
memset(schunk_cache_sizes, -1, sizeof(schunk_cache_sizes));
didinit = true;
}
/*
* Clear the static data.
*/
void Game_map::clear_chunks(
) {
if (chunk_terrains) {
int cnt = chunk_terrains->size();
for (int i = 0; i < cnt; i++)
delete(*chunk_terrains)[i];
delete chunk_terrains;
chunk_terrains = 0;
}
delete chunks; // Close 'u7chunks'.
chunks = 0;
read_all_terrain = false;
}
/*
* Clear out world's contents. Should be used during a 'restore'.
*/
void Game_map::clear(
) {
if (num == 0)
clear_chunks();
if (didinit) {
// Delete all chunks (& their objs).
for (int y = 0; y < c_num_chunks; y++)
for (int x = 0; x < c_num_chunks; x++) {
delete objects[x][y];
objects[x][y] = 0;
}
for (int i = 0; i < 144; i++) delete [] schunk_cache[i];
} else
memset(objects, 0, sizeof(objects));
didinit = false;
map_modified = false;
// Clear 'read' flags.
memset(schunk_read, 0, sizeof(schunk_read));
memset(schunk_modified, 0, sizeof(schunk_modified));
memset(schunk_cache, 0, sizeof(schunk_cache));
memset(schunk_cache_sizes, -1, sizeof(schunk_cache_sizes));
}
/*
* Read in superchunk data to cover the screen.
*/
void Game_map::read_map_data(
) {
Game_window *gwin = Game_window::get_instance();
int scrolltx = gwin->get_scrolltx(), scrollty = gwin->get_scrollty();
int w = gwin->get_width(), h = gwin->get_height();
// Start one tile to left.
int firstsx = (scrolltx - 1) / c_tiles_per_schunk,
firstsy = (scrollty - 1) / c_tiles_per_schunk;
// End 8 tiles to right.
int lastsx = (scrolltx + (w + c_tilesize - 2) / c_tilesize +
c_tiles_per_chunk / 2) / c_tiles_per_schunk;
int lastsy = (scrollty + (h + c_tilesize - 2) / c_tilesize +
c_tiles_per_chunk / 2) / c_tiles_per_schunk;
// Watch for wrapping.
int stopsx = (lastsx + 1) % c_num_schunks,
stopsy = (lastsy + 1) % c_num_schunks;
// Read in "map", "ifix" objects for
// all visible superchunks.
for (int sy = firstsy; sy != stopsy; sy = (sy + 1) % c_num_schunks)
for (int sx = firstsx; sx != stopsx;
sx = (sx + 1) % c_num_schunks) {
// Figure superchunk #.
int schunk = 12 * sy + sx;
// Read it if necessary.
if (!schunk_read[schunk])
get_superchunk_objects(schunk);
}
}
/*
* Get the map objects and scenery for a superchunk.
*/
void Game_map::get_map_objects(
int schunk // Superchunk # (0-143).
) {
int scy = 16 * (schunk / 12); // Get abs. chunk coords.
int scx = 16 * (schunk % 12);
// Go through chunks.
for (int cy = 0; cy < 16; cy++)
for (int cx = 0; cx < 16; cx++)
get_chunk_objects(scx + cx, scy + cy);
}
/*
* Read in terrain graphics data into window's image. (May also be
* called during map-editing if the chunknum changes.)
*/
void Game_map::get_chunk_objects(
int cx, int cy // Chunk index within map.
) {
// Get list we'll store into.
Map_chunk *chunk = get_chunk(cx, cy);
int chunk_num = terrain_map[cx][cy];
Chunk_terrain *ter = get_terrain(chunk_num);
chunk->set_terrain(ter);
}
/*
* Read in all terrain chunks (for editing).
*/
void Game_map::get_all_terrain(
) {
if (read_all_terrain)
return; // Already done.
int num_chunk_terrains = chunk_terrains->size();
for (int i = 0; i < num_chunk_terrains; i++)
if (!(*chunk_terrains)[i])
read_terrain(i);
read_all_terrain = true;
}
/*
* Set a chunk to a new terrain (during map-editing).
*/
void Game_map::set_chunk_terrain(
int cx, int cy, // Coords. of chunk to change.
int chunknum // New chunk #.
) {
terrain_map[cx][cy] = chunknum; // Set map.
get_chunk_objects(cx, cy); // Set chunk to it.
map_modified = true;
}
/*
* Build a file name with the map directory before it; ie,
* get_mapped_name("<GAMEDAT>/ireg, 3, to) will store
* "<GAMEDAT>/map03/ireg".
*/
char *Game_map::get_mapped_name(
const char *from,
char *to
) {
return Get_mapped_name(from, num, to);
}
/*
* Get the name of an ireg or ifix file.
*
* Output: ->fname, where name is stored.
*/
char *Game_map::get_schunk_file_name(
const char *prefix, // "ireg" or "ifix".
int schunk, // Superchunk # (0-143).
char *fname // Name is stored here.
) {
get_mapped_name(prefix, fname);
int len = strlen(fname);
fname[len] = '0' + schunk / 16;
int lb = schunk % 16;
fname[len + 1] = lb < 10 ? ('0' + lb) : ('a' + (lb - 10));
fname[len + 2] = 0;
return (fname);
}
/*
* Have shapes been added?
*/
static bool New_shapes() {
int u7nshapes = GAME_SI ? 1036 : 1024;
int nshapes =
Shape_manager::get_instance()->get_shapes().get_num_shapes();
return nshapes > u7nshapes;
}
/*
* Write out the chunks descriptions.
*/
void Game_map::write_chunk_terrains(
) {
const int ntiles = c_tiles_per_chunk * c_tiles_per_chunk;
int cnt = chunk_terrains->size();
int i; // Any terrains modified?
for (i = 0; i < cnt; i++)
if ((*chunk_terrains)[i] &&
(*chunk_terrains)[i]->is_modified())
break;
if (i < cnt) { // Got to update.
get_all_terrain(); // IMPORTANT: Get all in memory.
ofstream ochunks; // Open file for chunks data.
// This truncates the file.
U7open(ochunks, PATCH_U7CHUNKS);
v2_chunks = New_shapes();
int nbytes = v2_chunks ? 3 : 2;
if (v2_chunks)
ochunks.write(v2hdr, sizeof(v2hdr));
for (i = 0; i < cnt; i++) {
Chunk_terrain *ter = (*chunk_terrains)[i];
unsigned char data[ntiles * 3];
if (ter) {
ter->write_flats(data, v2_chunks);
ter->set_modified(false);
} else {
memset(&data[0], 0, ntiles * nbytes);
cerr << "NULL terrain. U7chunks may be bad."
<< endl;
}
ochunks.write(reinterpret_cast<char *>(data),
ntiles * nbytes);
}
if (!ochunks.good())
throw file_write_exception(U7CHUNKS);
ochunks.close();
}
chunk_terrains_modified = false;
}
/*
* Write out the 'static' map files.
*/
void Game_map::write_static(
) {
char fname[128];
U7mkdir("<PATCH>", 0755); // Create dir if not already there.
// Don't use PATCHDAT define cause
// it has a trailing slash
int schunk; // Write each superchunk to 'static'.
for (schunk = 0; schunk < c_num_schunks * c_num_schunks; schunk++)
// Only write what we've modified.
if (schunk_modified[schunk])
write_ifix_objects(schunk);
if (chunk_terrains_modified)
write_chunk_terrains();
std::ofstream u7map; // Write out map.
U7open(u7map, get_mapped_name(PATCH_U7MAP, fname));
for (schunk = 0; schunk < c_num_schunks * c_num_schunks; schunk++) {
int scy = 16 * (schunk / 12); // Get abs. chunk coords.
int scx = 16 * (schunk % 12);
uint8 buf[16 * 16 * 2];
uint8 *mapdata = buf;
// Go through chunks.
for (int cy = 0; cy < 16; cy++)
for (int cx = 0; cx < 16; cx++)
Write2(mapdata, terrain_map[scx + cx][scy + cy]);
u7map.write(reinterpret_cast<char *>(buf), sizeof(buf));
}
if (!u7map.good())
throw file_write_exception(U7MAP);
u7map.close();
map_modified = false;
}
/*
* Write out one of the "u7ifix" files.
*
* Output: Errors reported.
*/
void Game_map::write_ifix_objects(
int schunk // Superchunk # (0-143).
) {
char fname[128]; // Set up name.
ofstream ifix_stream; // There it is.
U7open(ifix_stream, get_schunk_file_name(PATCH_U7IFIX, schunk, fname));
OStreamDataSource ifix(&ifix_stream);
// +++++Use game title.
const int count = c_chunks_per_schunk * c_chunks_per_schunk;
Flex::Flex_vers vers = !New_shapes() ? Flex::orig : Flex::exult_v2;
bool v2 = vers == Flex::exult_v2;
Flex_writer writer(&ifix, "Exult", count, vers);
int scy = 16 * (schunk / 12); // Get abs. chunk coords.
int scx = 16 * (schunk % 12);
// Go through chunks.
for (int cy = 0; cy < 16; cy++)
for (int cx = 0; cx < 16; cx++) {
Map_chunk *chunk = get_chunk(scx + cx,
scy + cy);
// Restore original order (sort of).
Object_iterator_backwards next(chunk);
Game_object *obj;
while ((obj = next.get_next()) != 0)
obj->write_ifix(&ifix, v2);
writer.mark_section_done();
}
if (!writer.close())
throw file_write_exception(fname);
schunk_modified[schunk] = false;
}
/*
* Read in the objects for a superchunk from one of the "u7ifix" files.
*/
void Game_map::get_ifix_objects(
int schunk // Superchunk # (0-143).
) {
char fname[128]; // Set up name.
ifstream ifix_stream; // There it is.
if (is_system_path_defined("<PATCH>") &&
// First check for patch.
U7exists(get_schunk_file_name(PATCH_U7IFIX, schunk, fname)))
U7open(ifix_stream, fname);
else try {
U7open(ifix_stream, get_schunk_file_name(U7IFIX, schunk, fname));
} catch (const file_exception & /*f*/) {
if (!Game::is_editing()) // Ok if map-editing.
cerr << "Ifix file '" << fname << "' not found." <<
endl;
return;
}
FlexFile flex(fname);
int vers = static_cast<int>(flex.get_vers());
IStreamDataSource ifix(&ifix_stream);
int scy = 16 * (schunk / 12); // Get abs. chunk coords.
int scx = 16 * (schunk % 12);
// Go through chunks.
for (int cy = 0; cy < 16; cy++)
for (int cx = 0; cx < 16; cx++) {
// Get to index entry for chunk.
int chunk_num = cy * 16 + cx;
size_t len;
uint32 offset = flex.get_entry_info(chunk_num, len);
if (len)
get_ifix_chunk_objects(&ifix, vers, offset,
len, scx + cx, scy + cy);
}
}
/*
* Get the objects from one ifix chunk entry onto the screen.
*/
void Game_map::get_ifix_chunk_objects(
IDataSource *ifix,
int vers, // Flex file vers.
long filepos, // Offset in file.
int len, // Length of data.
int cx, int cy // Absolute chunk #'s.
) {
Ifix_game_object *obj;
ifix->seek(filepos); // Get to actual shape.
// Get buffer to hold entries' indices.
unsigned char *entries = new unsigned char[len];
unsigned char *ent = entries; // Read them in.
ifix->read(reinterpret_cast<char *>(entries), len);
// Get object list for chunk.
Map_chunk *olist = get_chunk(cx, cy);
if (static_cast<Flex::Flex_vers>(vers) == Flex::orig) {
int cnt = len / 4;
for (int i = 0; i < cnt; i++, ent += 4) {
int tx = (ent[0] >> 4) & 0xf, ty = ent[0] & 0xf,
tz = ent[1] & 0xf;
int shnum = ent[2] + 256 * (ent[3] & 3), frnum = ent[3] >> 2;
const Shape_info &info = ShapeID::get_info(shnum);
obj = (info.is_animated() || info.has_sfx()) ?
new Animated_ifix_object(shnum, frnum, tx, ty, tz)
: new Ifix_game_object(shnum, frnum, tx, ty, tz);
olist->add(obj);
}
} else if (static_cast<Flex::Flex_vers>(vers) == Flex::exult_v2) {
// b0 = tx,ty, b1 = lift, b2-3 = shnum, b4=frnum
int cnt = len / 5;
for (int i = 0; i < cnt; i++, ent += 5) {
int tx = (ent[0] >> 4) & 0xf, ty = ent[0] & 0xf,
tz = ent[1] & 0xf;
int shnum = ent[2] + 256 * ent[3], frnum = ent[4];
const Shape_info &info = ShapeID::get_info(shnum);
obj = (info.is_animated() || info.has_sfx()) ?
new Animated_ifix_object(shnum, frnum, tx, ty, tz)
: new Ifix_game_object(shnum, frnum, tx, ty, tz);
olist->add(obj);
}
} else
assert(0);
delete[] entries; // Done with buffer.
olist->setup_dungeon_levels(); // Should have all dungeon pieces now.
}
/*
* Constants for IREG files:
*/
#define IREG_SPECIAL 255 // Precedes special entries.
#define IREG_UCSCRIPT 1 // Saved Usecode_script for object.
#define IREG_ENDMARK 2 // Just an 'end' mark.
#define IREG_ATTS 3 // Attribute/value pairs.
#define IREG_STRING 4 // A string; ie, function name.
/*
* Write out attributes for an object.
*/
void Game_map::write_attributes(
ODataSource *ireg,
vector<pair<const char *, int> > &attlist
) {
int len = 0; // Figure total length.
int i, cnt = attlist.size();
if (!cnt)
return;
for (i = 0; i < cnt; ++i) {
const char *att = attlist[i].first;
len += strlen(att) + 1 + 2; // Name, NULL, val.
}
ireg->write1(IREG_SPECIAL);
ireg->write1(IREG_ATTS);
ireg->write2(len);
for (i = 0; i < cnt; ++i) {
const char *att = attlist[i].first;
int val = attlist[i].second;
ireg->write(att, strlen(att) + 1);
ireg->write2(val);
}
}
/*
* Write out scheduled usecode for an object.
*/
void Game_map::write_scheduled(
ODataSource *ireg,
Game_object *obj,
bool write_mark // Write an IREG_ENDMARK if true.
) {
for (Usecode_script *scr = Usecode_script::find(obj); scr;
scr = Usecode_script::find(obj, scr)) {
ostringstream outbuf(ios::out);
OStreamDataSource nbuf(&outbuf);
int len = scr->save(&nbuf);
if (len < 0)
cerr << "Error saving Usecode script" << endl;
else if (len > 0) {
ireg->write1(IREG_SPECIAL);
ireg->write1(IREG_UCSCRIPT);
ireg->write2(len); // Store length.
ireg->write(outbuf.str());
}
}
if (write_mark) {
ireg->write1(IREG_SPECIAL);
ireg->write1(IREG_ENDMARK);
}
}
/*
* Write string entry and/or return length of what's written.
*/
int Game_map::write_string(
ODataSource *ireg, // Null if we just want length.
const char *str
) {
int len = 1 + strlen(str);
if (ireg) {
ireg->write1(IREG_SPECIAL);
ireg->write1(IREG_STRING);
ireg->write2(len);
ireg->write(str, len);
}
return len + 4;
}
/*
* Write modified 'u7ireg' files.
*/
void Game_map::write_ireg(
) {
// Write each superchunk to Iregxx.
for (int schunk = 0; schunk < c_num_schunks * c_num_schunks; schunk++)
// Only write what we've read.
if (schunk_cache[schunk] && schunk_cache_sizes[schunk] >= 0) {
// It's loaded in a memory buffer
char fname[128]; // Set up name.
ofstream ireg_stream;
U7open(ireg_stream, get_schunk_file_name(U7IREG, schunk, fname));
ireg_stream.write(schunk_cache[schunk], schunk_cache_sizes[schunk]);
} else if (schunk_read[schunk]) {
// It's active
write_ireg_objects(schunk);
}
}
/*
* Write out one of the "u7ireg" files.
*
* Output: 0 if error, which is reported.
*/
void Game_map::write_ireg_objects(
int schunk // Superchunk # (0-143).
) {
char fname[128]; // Set up name.
ofstream ireg_stream; // There it is.
U7open(ireg_stream, get_schunk_file_name(U7IREG, schunk, fname));
OStreamDataSource ireg(&ireg_stream);
write_ireg_objects(schunk, &ireg);
ireg_stream.flush();
int result = ireg_stream.good();
if (!result) throw file_write_exception(fname);
}
/*
* Write out one of the "u7ireg" files.
*
* Output: 0 if error, which is reported.
*/
void Game_map::write_ireg_objects(
int schunk, // Superchunk # (0-143).
ODataSource *ireg
) {
int scy = 16 * (schunk / 12); // Get abs. chunk coords.
int scx = 16 * (schunk % 12);
// Go through chunks.
for (int cy = 0; cy < 16; cy++)
for (int cx = 0; cx < 16; cx++) {
Map_chunk *chunk = get_chunk(scx + cx,
scy + cy);
Game_object *obj;
// Restore original order (sort of).
Object_iterator_backwards next(chunk);
while ((obj = next.get_next()) != 0)
obj->write_ireg(ireg);
ireg->write2(0);// End with 2 0's.
}
}
/*
* Read in the objects for a superchunk from one of the "u7ireg" files.
* (These are the moveable objects.)
*/
void Game_map::get_ireg_objects(
int schunk // Superchunk # (0-143).
) {
char fname[128]; // Set up name.
ifstream ireg_stream; // There it is.
IDataSource *ireg = 0;
if (schunk_cache[schunk] && schunk_cache_sizes[schunk] >= 0) {
// No items
if (schunk_cache_sizes[schunk] == 0) return;
ireg = new IBufferDataSource(schunk_cache[schunk], schunk_cache_sizes[schunk]);
#ifdef DEBUG
std::cout << "Reading " << get_schunk_file_name(U7IREG, schunk, fname) << " from memory" << std::endl;
#endif
} else {
try {
U7open(ireg_stream, get_schunk_file_name(U7IREG, schunk, fname));
} catch (const file_exception & /*f*/) {
return; // Just don't show them.
}
ireg = new IStreamDataSource(&ireg_stream);
}
int scy = 16 * (schunk / 12); // Get abs. chunk coords.
int scx = 16 * (schunk % 12);
read_ireg_objects(ireg, scx, scy);
// A fixup:
if (schunk == 10 * 12 + 11 && Game::get_game_type() == SERPENT_ISLE) {
// Lever in SilverSeed:
Game_object_vector vec;
if (Game_object::find_nearby(vec, Tile_coord(2936, 2726, 0),
787, 0, 0, c_any_qual, 5))
vec[0]->move(2937, 2727, 2);
}
delete ireg;
if (schunk_cache[schunk]) {
delete [] schunk_cache[schunk];
schunk_cache[schunk] = 0;
schunk_cache_sizes[schunk] = -1;
}
}
/*
* Read in a 'special' IREG entry (one starting with 255).
*/
void Read_special_ireg(
IDataSource *ireg,
Game_object *obj // Last object read.
) {
int type = ireg->read1(); // Get type.
int len = ireg->read2(); // Length of rest.
unsigned char *buf = new unsigned char[len];
ireg->read(reinterpret_cast<char *>(buf), len);
if (type == IREG_UCSCRIPT) { // Usecode script?
IBufferDataSource nbuf(buf, len);
Usecode_script *scr = Usecode_script::restore(obj, &nbuf);
if (scr) {
scr->start(scr->get_delay());
#if 0
COUT("Restored script for '" <<
get_item_name(obj->get_shapenum())
<< "'" << endl);
scr->print(cout);
cout << endl;
#endif
}
} else if (type == IREG_ATTS) // Attribute/value pairs?
obj->read_attributes(buf, len);
else if (type == IREG_STRING) { // IE, Usecode egg function name?
if (obj->is_egg())
static_cast<Egg_object *>(obj)->set_str1(
reinterpret_cast<char *>(buf));
} else
cerr << "Unknown special IREG entry: " << type << endl;
delete [] buf;
}
/*
* Read in a 'special' IREG entry (one starting with 255).
*/
void Game_map::read_special_ireg(
IDataSource *ireg,
Game_object *obj // Last object read.
) {
unsigned char entlen;
while ((entlen = ireg->peek()) == IREG_SPECIAL && !ireg->eof()) {
ireg->read1(); // Eat the IREG_SPECIAL.
unsigned char type = ireg->peek();
if (type == IREG_ENDMARK) {
// End of list.
ireg->read1();
return;
}
Read_special_ireg(ireg, obj);
}
}
/*
* Containers and items classed as 'quality_flags' have a byte of flags.
* This routine returns them converted into Object_flags.
*/
inline unsigned long Get_quality_flags(
unsigned char qualbyte // Quality byte containing flags.
) {
return ((qualbyte & 1) << Obj_flags::invisible) |
(((qualbyte >> 3) & 1) << Obj_flags::okay_to_take);
}
/*
* Read a list of ireg objects. They are either placed in the desired
* game chunk, or added to their container.
*/
void Game_map::read_ireg_objects(
IDataSource *ireg, // File to read from.
int scx, int scy, // Abs. chunk coords. of superchunk.
Game_object *container, // Container, or null.
unsigned long flags // Usecode item flags.
) {
unsigned char entbuf[20];
int entlen; // Gets entry length.
sint8 index_id = -1;
Game_object *last_obj = 0; // Last one read in this call.
Game_window *gwin = Game_window::get_instance();
// Go through entries.
while (((entlen = ireg->read1(), !ireg->eof()))) {
int extended = 0; // 1 for 2-byte shape #'s.
// Skip 0's & ends of containers.
if (!entlen || entlen == 1) {
if (container)
return; // Skip 0's & ends of containers.
else
continue;
}
// Detect the 2 byte index id
else if (entlen == 2) {
index_id = static_cast<sint8>(ireg->read2());
continue;
} else if (entlen == IREG_SPECIAL) {
Read_special_ireg(ireg, last_obj);
continue;
} else if (entlen == IREG_EXTENDED) {
extended = 1;
entlen = ireg->read1();
}
// Get copy of flags.
unsigned long oflags = flags & ~(1 << Obj_flags::is_temporary);
int testlen = entlen - extended;
if (testlen != 6 && testlen != 10 && testlen != 12 &&
testlen != 13 && testlen != 14 && testlen != 18) {
long pos = ireg->getPos();
cout << "Unknown entlen " << testlen << " at pos. " <<
pos << endl;
ireg->seek(pos + entlen);
continue; // Only know these two types.
}
unsigned char *entry = &entbuf[0]; // Get entry.
ireg->read(reinterpret_cast<char *>(entry), entlen);
int cx = entry[0] >> 4; // Get chunk indices within schunk.
int cy = entry[1] >> 4;
// Get coord. #'s where shape goes.
int tilex, tiley;
if (container) { // In container? Get gump coords.
tilex = entry[0];
tiley = entry[1];
} else {
tilex = entry[0] & 0xf;
tiley = entry[1] & 0xf;
}
int shnum, frnum; // Get shape #, frame #.
if (extended) {
shnum = entry[2] + 256 * entry[3];
frnum = entry[4];
++entry; // So the rest is in the right place.
} else {
shnum = entry[2] + 256 * (entry[3] & 3);
frnum = entry[3] >> 2;
}
const Shape_info &info = ShapeID::get_info(shnum);
unsigned int lift, quality, type;
Ireg_game_object *obj;
int is_egg = 0; // Fields are eggs.
// Has flag byte(s)
if (testlen == 10) {
// Temporary
if (entry[6] & 1) oflags |= 1 << Obj_flags::is_temporary;
}
// An "egg"?
if (info.get_shape_class() == Shape_info::hatchable) {
bool anim = info.is_animated() || info.has_sfx();
lift = entry[9] >> 4;
Egg_object *egg = Egg_object::create_egg(entry, entlen,
anim, shnum, frnum, tilex, tiley, lift);
get_chunk(scx + cx, scy + cy)->add_egg(egg);
last_obj = egg;
continue;
} else if (testlen == 6 || testlen == 10) { // Simple entry?
type = 0;
lift = entry[4] >> 4;
quality = entry[5];
obj = create_ireg_object(info, shnum, frnum,
tilex, tiley, lift);
is_egg = obj->is_egg();
// Wierd use of flag:
if (info.has_quantity()) {
if (quality & 0x80) {
oflags |= (1 << Obj_flags::okay_to_take);
quality &= 0x7f;
} else