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/**
** Iregobjs.cc - Ireg (moveable) game objects.
**
** Written: 10/1/98 - JSF
**/
/*
Copyright (C) 1998-2000 Jeffrey S. Freedman
Copyright (C) 2000-2022 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 "Gump_manager.h"
#include "cheat.h"
#include "chunks.h"
#include "contain.h"
#include "databuf.h"
#include "effects.h"
#include "gamemap.h"
#include "gamewin.h"
#include "ucsched.h"
using std::ostream;
/*
* Get chunk coords, or 255.
*/
inline int Game_object::get_cxi() const {
return chunk ? chunk->cx : 255;
}
inline int Game_object::get_cyi() const {
return chunk ? chunk->cy : 255;
}
/*
* Paint at given spot in world.
*/
void Ireg_game_object::paint() {
int x;
int y;
gwin->get_shape_location(this, x, y);
if (flags & (1L << Obj_flags::invisible)) {
paint_invisible(x, y);
} else {
paint_shape(x, y);
}
}
/*
* Move to a new absolute location. This should work even if the old
* location is invalid (cx=cy=255).
*/
void Ireg_game_object::move(int newtx, int newty, int newlift, int newmap) {
if (owner) { // Watch for this.
owner->remove(this);
set_invalid(); // So we can safely move it back.
}
Game_object::move(newtx, newty, newlift, newmap);
}
/*
* Remove an object from its container, or from the world.
* The object is deleted.
*/
void Ireg_game_object::remove_this(
Game_object_shared* keep // Non-null to not delete.
) {
// Do this before all else.
if (!keep) {
cheat.clear_this_grabbed_actor(
this->as_actor()); // Could be an actor
} else {
*keep = shared_from_this();
}
if (owner) { // In a bag, box, or person.
owner->remove(this);
} else { // In the outside world.
if (chunk) {
chunk->remove(this);
}
}
}
/*
* Can this be dragged?
*/
bool Ireg_game_object::is_dragable() const {
// 0 weight means 'too heavy'.
return get_info().get_weight() > 0;
}
/*
* Write the common IREG data for an entry.
* Note: Length is incremented if this is an extended entry (shape# >
* 1023).
* Output: ->past data written.
*/
unsigned char* Ireg_game_object::write_common_ireg(
int norm_len, // Normal length (if not extended).
unsigned char* buf // Buffer to be filled.
) {
unsigned char* endptr;
const int shapenum = get_shapenum();
const int framenum = get_framenum();
if (shapenum >= 1024 || framenum >= 64) {
Write1(buf, IREG_EXTENDED);
norm_len++;
buf[3] = shapenum & 0xff;
buf[4] = shapenum >> 8;
buf[5] = framenum;
endptr = buf + 6;
} else {
if (get_lift() > 15) {
Write1(buf, IREG_EXTENDED2);
}
buf[3] = shapenum & 0xff;
buf[4] = ((shapenum >> 8) & 3) | (framenum << 2);
endptr = buf + 5;
}
buf[0] = norm_len;
if (owner) {
// Coords within gump.
buf[1] = get_tx();
buf[2] = get_ty();
} else { // Coords on map.
buf[1] = ((get_cxi() % 16) << 4) | get_tx();
buf[2] = ((get_cyi() % 16) << 4) | get_ty();
}
return endptr;
}
/*
* Write out.
*/
void Ireg_game_object::write_ireg(ODataSource* out) {
unsigned char buf[20]; // 10-byte entry;
uint8* ptr = write_common_ireg(10, buf);
Write1(ptr, nibble_swap(get_lift()));
const Shape_info& info = get_info();
uint8 value = get_quality();
if (info.has_quality_flags()) {
// Store 'quality_flags'.
value = (get_flag(Obj_flags::invisible) ? 1 : 0)
+ (get_flag(Obj_flags::okay_to_take) ? (1 << 3) : 0);
}
// Special case for 'quantity' items:
else if (get_flag(Obj_flags::okay_to_take) && info.has_quantity()) {
value |= 0x80;
}
Write1(ptr, value);
Write1(ptr, static_cast<uint8>(get_flag(Obj_flags::is_temporary)));
Write1(ptr, 0); // Filler, I guess.
Write1(ptr, 0);
Write1(ptr, 0);
out->write(reinterpret_cast<char*>(buf), ptr - buf);
// Write scheduled usecode.
Game_map::write_scheduled(out, this);
}
// Get size of IREG. Returns -1 if can't write to buffer
int Ireg_game_object::get_ireg_size() {
// These shouldn't ever happen, but you never know
if (gumpman->find_gump(this) || Usecode_script::find(this)) {
return -1;
}
return 6 + get_common_ireg_size();
}
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