mirror of
https://github.com/libretro/scummvm.git
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486 lines
10 KiB
C++
486 lines
10 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001/2002 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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/*
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* Readline and command completion support by Tom Dunstan <tommyd@senet.com.au>
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*/
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#include "stdafx.h"
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#include "scumm.h"
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#include "actor.h"
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#include "debug.h"
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#ifdef HAVE_READLINE
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#include "debugrl.h"
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#endif
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enum {
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CMD_INVALID,
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CMD_HELP,
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CMD_CONTINUE,
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CMD_GO,
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CMD_ACTOR,
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CMD_SCRIPTS,
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CMD_LOAD_ROOM,
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CMD_DUMPBOX,
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CMD_VAR,
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CMD_WATCH,
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CMD_QUIT
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};
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void ScummDebugger::attach(Scumm *s)
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{
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if (_s)
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detach();
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_welcome = true;
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_s = s;
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s->_debugger = this;
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_go_amount = 1;
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#ifdef HAVE_READLINE
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initialize_readline();
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#endif
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}
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bool ScummDebugger::do_command()
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{
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switch (get_command()) {
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case CMD_HELP:
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printf("Debugger commands:\n"
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"(a)ctor [actornum] -> show actor information\n"
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"(b)ox [boxnum] -> list and draw the specified (or all) boxes\n"
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"(c)ontinue -> exit the debugger and continue the program\n"
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"(h)elp -> display this help text\n"
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"(g)o [numframes] -> increase frame\n"
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"(r)oom [roomnum] -> load room\n"
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"(s)cripts -> show running scripts\n"
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"(v)ariable -> set or show a variable value\n"
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"(w)atch [varnum] -> set a variable watch. 0 means all variables.\n"
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"(q)uit -> exit game\n");
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return true;
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case CMD_CONTINUE:
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detach();
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return false;
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case CMD_GO:
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if (!_parameters[0])
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_go_amount = 1;
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else
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_go_amount = atoi(_parameters);
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return false;
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case CMD_ACTOR:
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if (!_parameters[0])
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printActors(-1);
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else
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printActors(atoi(_parameters));
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return true;
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case CMD_SCRIPTS:
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printScripts();
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return true;
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case CMD_LOAD_ROOM:
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if (!_parameters[0]) {
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printf("Current room: %d [%d]\n", _s->_currentRoom, _s->_roomResource);
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} else {
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int room = atoi(_parameters);
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_s->_actors[_s->_vars[_s->VAR_EGO]].room = room;
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_s->startScene(room, 0, 0);
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_s->_fullRedraw = 1;
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}
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return true;
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case CMD_DUMPBOX:
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if (!_parameters[0])
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printBoxes();
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else
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printBox(atoi(_parameters));
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return true;
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case CMD_VAR:
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if (!_parameters[0]) {
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printf("v 123 will show the value of 123, v 123 456 will set the value of 123 to 456.\n");
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} else {
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char *tok = strtok(_parameters, " ");
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int var = atoi(tok);
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tok = strtok(NULL, "");
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if (tok)
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_s->writeVar(var, atoi(tok));
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printf("Var[%d] = %d\n", var, _s->readVar(var));
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}
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return true;
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case CMD_WATCH:
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if (!_parameters[0]) {
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printf("Clearing all watches..\n");
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_s->_varwatch = -1;
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} else {
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_s->_varwatch = atoi(_parameters);
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if (_s->_varwatch == 0)
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printf("Watching all variables\n");
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else
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printf("Watching vars[%d]\n", _s->_varwatch);
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}
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return true;
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case CMD_QUIT:
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exit(1);
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default: /* this line is never reached */
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error("Unknown debug command");
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return true;
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}
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}
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void ScummDebugger::enter()
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{
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if (_welcome) {
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_welcome = false;
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printf
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("Debugging Mode entered!, please switch to this console for input.\n"
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"Enter h to list all the debug commands\n");
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}
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while (do_command()) {
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}
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}
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void ScummDebugger::on_frame()
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{
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if (_go_amount == 0)
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return;
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if (!--_go_amount)
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enter();
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}
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void ScummDebugger::detach()
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{
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_s->_debugger = NULL;
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_s = NULL;
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}
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struct DebuggerCommands {
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char text[8];
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byte len;
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byte id;
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};
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static const DebuggerCommands debugger_commands[] = {
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{"h", 1, CMD_HELP},
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{"c", 1, CMD_CONTINUE},
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{"g", 1, CMD_GO},
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{"a", 1, CMD_ACTOR},
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{"s", 1, CMD_SCRIPTS},
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{"r", 1, CMD_LOAD_ROOM},
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{"b", 1, CMD_DUMPBOX},
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{"v", 1, CMD_VAR},
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{"w", 1, CMD_WATCH},
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{"q", 1, CMD_QUIT},
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{"", 0, 0}
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};
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int ScummDebugger::get_command()
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{
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const DebuggerCommands *dc;
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char *s;
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int i;
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static char *buf;
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do {
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#ifndef HAVE_READLINE
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buf = _cmd_buffer;
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printf("debug> ");
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if (!fgets(_cmd_buffer, sizeof(_cmd_buffer), stdin))
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return CMD_CONTINUE;
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i = strlen(_cmd_buffer);
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while (i > 0 && _cmd_buffer[i - 1] == 10)
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_cmd_buffer[--i] = 0;
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if (i == 0)
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continue;
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#else // yes we do have readline
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if (buf) {
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free(buf);
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}
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buf = readline("debug> ");
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if (!buf) {
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printf("\n");
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return CMD_CONTINUE;
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}
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if (strlen(buf) == 0) {
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continue;
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}
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add_history(buf);
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#endif
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dc = debugger_commands;
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do {
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if (!strncmp(buf, dc->text, dc->len)) {
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for (s = buf; *s; s++) {
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if (*s == 32) {
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s++;
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break;
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}
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}
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_parameters = s;
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return _command = dc->id;
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}
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} while ((++dc)->text[0]);
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for (s = buf; *s; s++)
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if (*s == 32) {
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*s = 0;
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break;
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}
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printf("Invalid command '%s'. Type 'help' for a list of available commands.\n", buf);
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} while (1);
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}
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void ScummDebugger::printActors(int act)
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{
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int i;
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Actor *a;
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printf("+------------------------------------------------------------------+\n");
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printf("|# |room| x y |elev|cos|width|box|mov|zp|frame|scale|spd|dir|cls|\n");
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printf("+--+----+--------+----+---+-----+---+---+--+-----+-----+---+---+---+\n");
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for (i = 1; i < _s->NUM_ACTORS; i++) {
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if (act == -1 || act == i) {
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a = &_s->_actors[i];
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if (a->visible)
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printf("|%2d|%4d|%3d %3d|%4d|%3d|%5d|%3d|%3d|%2d|%5d|%5d|%3d|%3d|$%02x|\n",
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a->number, a->room, a->x, a->y, a->elevation, a->costume,
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a->width, a->walkbox, a->moving, a->forceClip, a->frame,
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a->scalex, a->speedx, a->facing, _s->_classData[a->number]);
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}
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}
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printf("+--------------------------------------------------------------+\n");
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}
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void ScummDebugger::printScripts()
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{
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int i;
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ScriptSlot *ss;
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printf("+---------------------------------+\n");
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printf("|# |num|sta|typ|un1|un2|fc|cut|un5|\n");
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printf("+--+---+---+---+---+---+--+---+---+\n");
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for (i = 0; i < 25; i++) {
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ss = &_s->vm.slot[i];
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if (ss->number) {
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printf("|%2d|%3d|%3d|%3d|%3d|%3d|%2d|%3d|%3d|\n",
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i, ss->number, ss->status, ss->where, ss->unk1, ss->unk2,
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ss->freezeCount, ss->cutsceneOverride, ss->unk5);
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}
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}
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printf("+-------------------------------------+\n");
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}
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void ScummDebugger::printBoxes()
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{
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int num, i = 0;
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byte *boxm = _s->getBoxMatrixBaseAddr();
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num = _s->getNumBoxes();
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printf("Walk matrix:\n");
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for (i = 0; i < num; i++) {
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while (*boxm != 0xFF) {
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printf("[%d] ", *boxm);
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boxm++;
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}
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boxm++;
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printf("\n");
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}
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printf("\nWalk boxes:\n");
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for (i = 0; i < num; i++)
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printBox(i);
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}
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void ScummDebugger::printBox(int box)
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{
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BoxCoords coords;
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int flags = _s->getBoxFlags(box);
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int mask = _s->getMaskFromBox(box);
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_s->getBoxCoordinates(box, &coords);
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// Draw the box
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boxTest(box);
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// Print out coords, flags, zbuffer mask
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printf("%d: [%d x %d] [%d x %d] [%d x %d] [%d x %d], flags=0x%02x, mask=%d\n",
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box,
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coords.ul.x, coords.ul.y, coords.ll.x, coords.ll.y,
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coords.ur.x, coords.ur.y, coords.lr.x, coords.lr.y,
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flags, mask);
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}
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/************ ENDER: Temporary debug code for boxen **************/
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/*
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int hlineColor(SDL_Surface * dst, Sint16 x1, Sint16 x2, Sint16 y, Uint32 color)
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*/
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static int gfxPrimitivesCompareInt(const void *a, const void *b);
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static int *gfxPrimitivesPolyInts = NULL;
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static int gfxPrimitivesPolyAllocated = 0;
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static byte *getBasePtr(Scumm *_s, int x, int y)
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{
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VirtScreen *vs = _s->findVirtScreen(y);
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if (vs == NULL)
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return NULL;
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return vs->screenPtr + x + (y - vs->topline) * 320 +
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_s->_screenStartStrip * 8 + (_s->camera._cur.y - 100) * 320;
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}
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static void hline(Scumm *scumm, int x1, int x2, int y, byte color)
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{
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byte *ptr;
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if (x2 < x1)
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x2 ^= x1 ^= x2 ^= x1; // Swap x2 and x1
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ptr = getBasePtr(scumm, x1, y);
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if (ptr == NULL)
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return;
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while (x1++ <= x2) {
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*ptr++ = color;
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}
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}
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static void filledPolygonColor(Scumm *scumm, int16 *vx, int16 *vy, int n, int color)
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{
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int i;
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int y;
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int miny, maxy;
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int x1, y1;
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int x2, y2;
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int ind1, ind2;
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int ints;
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/* Sanity check */
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if (n < 3) {
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return;
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}
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/* Allocate temp array, only grow array */
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if (!gfxPrimitivesPolyAllocated) {
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gfxPrimitivesPolyInts = (int *)malloc(sizeof(int) * n);
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gfxPrimitivesPolyAllocated = n;
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} else {
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if (gfxPrimitivesPolyAllocated < n) {
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gfxPrimitivesPolyInts = (int *)realloc(gfxPrimitivesPolyInts, sizeof(int) * n);
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gfxPrimitivesPolyAllocated = n;
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}
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}
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/* Determine Y maxima */
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miny = vy[0];
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maxy = vy[0];
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for (i = 1; (i < n); i++) {
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if (vy[i] < miny) {
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miny = vy[i];
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} else if (vy[i] > maxy) {
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maxy = vy[i];
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}
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}
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/* Draw, scanning y */
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for (y = miny; (y <= maxy); y++) {
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ints = 0;
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for (i = 0; (i < n); i++) {
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if (!i) {
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ind1 = n - 1;
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ind2 = 0;
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} else {
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ind1 = i - 1;
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ind2 = i;
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}
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y1 = vy[ind1];
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y2 = vy[ind2];
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if (y1 < y2) {
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x1 = vx[ind1];
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x2 = vx[ind2];
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} else if (y1 > y2) {
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y2 = vy[ind1];
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y1 = vy[ind2];
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x2 = vx[ind1];
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x1 = vx[ind2];
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} else {
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continue;
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}
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if ((y >= y1) && (y < y2)) {
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gfxPrimitivesPolyInts[ints++] = (y - y1) * (x2 - x1) / (y2 - y1) + x1;
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} else if ((y == maxy) && (y > y1) && (y <= y2)) {
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gfxPrimitivesPolyInts[ints++] = (y - y1) * (x2 - x1) / (y2 - y1) + x1;
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}
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}
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qsort(gfxPrimitivesPolyInts, ints, sizeof(int), gfxPrimitivesCompareInt);
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for (i = 0; (i < ints); i += 2) {
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hline(scumm, gfxPrimitivesPolyInts[i], gfxPrimitivesPolyInts[i + 1], y, color);
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}
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}
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return;
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}
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static int gfxPrimitivesCompareInt(const void *a, const void *b)
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{
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return (*(const int *)a) - (*(const int *)b);
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}
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void ScummDebugger::boxTest(int num)
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{
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BoxCoords box;
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int16 rx1[4], ry1[4];
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_s->getBoxCoordinates(num, &box);
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rx1[0] = box.ul.x;
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ry1[0] = box.ul.y;
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rx1[1] = box.ur.x;
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ry1[1] = box.ur.y;
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rx1[2] = box.lr.x;
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ry1[2] = box.lr.y;
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rx1[3] = box.ll.x;
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ry1[3] = box.ll.y;
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// TODO - maybe use different colors for each box, and/or print the box number inside it?
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filledPolygonColor(_s, &rx1[0], &ry1[0], 4, 255);
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VirtScreen *vs = _s->findVirtScreen(box.ul.y);
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if (vs != NULL)
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_s->setVirtscreenDirty(vs, 0, 0, 320, 200);
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_s->drawDirtyScreenParts();
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_s->_system->update_screen();
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}
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