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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 The ScummVM project
*
* The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
*
* 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.
*
* $Header$
*
*/
// Console module
#include "saga/saga.h"
#include "saga/gfx.h"
#include "saga/font.h"
#include "saga/cvar_mod.h"
#include "saga/events.h"
#include "saga/console.h"
namespace Saga {
int Console::reg() {
CVAR_Register_I(&_resize, "con_h", NULL, R_CVAR_NONE, 12, R_CON_DEFAULTPOS);
CVAR_Register_I(&_droptime, "con_droptime", NULL, R_CVAR_NONE, 0, 5000);
CVAR_Register_I(&_lineMax, "con_lines", NULL, R_CVAR_NONE, 5, 5000);
return R_SUCCESS;
}
Console::Console(SagaEngine *vm) : _vm(vm) {
memset(&_scrollback, 0, sizeof(_scrollback));
memset(&_history, 0, sizeof(_history));
_resize = R_CON_DEFAULTPOS;
_droptime = R_CON_DROPTIME;
_active = false;
_yMax = R_CON_DEFAULTPOS;
_lineMax = R_CON_DEFAULTLINES;
_histMax = R_CON_DEFAULTCMDS;
_histPos = 0;
_linePos = 0;
_yPos = 0;
_prompt = NULL;
_promptW = 0;
*_inputBuf = 0;
_inputPos = 0;
}
Console::~Console() {
debug(0, "~Console(): Deleting console scrollback and command history.");
deleteScroll(&_scrollback);
deleteScroll(&_history);
}
int Console::activate() {
R_EVENT con_event;
if (_active) {
return R_FAILURE;
}
con_event.type = R_CONTINUOUS_EVENT;
con_event.code = R_CONSOLE_EVENT | R_NODESTROY;
con_event.op = EVENT_ACTIVATE;
con_event.time = 0;
con_event.duration = _droptime;
_vm->_events->queue(&con_event);
_active = true;
return R_SUCCESS;
}
int Console::deactivate() {
R_EVENT con_event;
if (!_active) {
return R_FAILURE;
}
con_event.type = R_CONTINUOUS_EVENT;
con_event.code = R_CONSOLE_EVENT | R_NODESTROY;
con_event.op = EVENT_DEACTIVATE;
con_event.time = 0;
con_event.duration = _droptime;
_vm->_events->queue(&con_event);
return R_SUCCESS;
}
bool Console::isActive(void) {
return _active;
}
// Responsible for processing character input to the console and maintaining
// the console input buffer.
// Input buffer is processed by EXPR_Parse on enter.
// High ASCII characters are ignored.
int Console::type(int in_char) {
int input_pos = _inputPos;
const char *expr;
int expr_len;
int result;
//char *lvalue;
char *rvalue = NULL;
R_CVAR_P con_cvar = NULL;
const char *expr_err;
const char *err_str;
if (_yPos != _yMax) {
// Ignore keypress until console fully down
return R_SUCCESS;
}
if ((in_char > 127) || (!in_char)) {
// Ignore non-ascii codes
return R_SUCCESS;
}
switch (in_char) {
case '\r':
expr = _inputBuf;
_vm->_console->print("> %s", _inputBuf);
expr_len = strlen(_inputBuf);
result = EXPR_Parse(&expr, &expr_len, &con_cvar, &rvalue);
_vm->_console->addLine(&_history, _histMax, _inputBuf);
memset(_inputBuf, 0, R_CON_INPUTBUF_LEN);
_inputPos = 0;
_histPos = 0;
if (result != R_SUCCESS) {
EXPR_GetError(&expr_err);
_vm->_console->print("Parse error: %s", expr_err);
break;
}
if (rvalue == NULL) {
CVAR_Print(con_cvar);
break;
}
if (CVAR_IsFunc(con_cvar)) {
CVAR_Exec(con_cvar, rvalue);
} else if (CVAR_SetValue(con_cvar, rvalue) != R_SUCCESS) {
CVAR_GetError(&err_str);
_vm->_console->print("Illegal assignment: %s.", err_str);
}
break;
case '\b':
_inputBuf[input_pos] = 0;
if (input_pos > 0) {
_inputPos--;
_inputBuf[_inputPos] = 0;
}
break;
default:
if (input_pos < R_CON_INPUTBUF_LEN) {
_inputBuf[input_pos] = (char)in_char;
_inputPos++;
}
break;
}
if (rvalue)
free(rvalue);
return R_SUCCESS;
}
int Console::draw(R_SURFACE *ds) {
int line_y;
R_CONSOLE_LINE *walk_ptr;
R_CONSOLE_LINE *start_ptr;
int txt_fgcolor;
int txt_shcolor;
R_RECT fill_rect;
int i;
if (!_active) {
return R_FAILURE;
}
if (_resize != _yMax) {
_yMax = _resize;
_yPos = _resize;
}
fill_rect.top = 0;
fill_rect.left = 0;
fill_rect.bottom = _yPos;
fill_rect.right = ds->buf_w - 1;
_vm->_gfx->drawRect(ds, &fill_rect, _vm->_gfx->matchColor(R_CONSOLE_BGCOLOR));
txt_fgcolor = _vm->_gfx->matchColor(R_CONSOLE_TXTCOLOR);
txt_shcolor = _vm->_gfx->matchColor(R_CONSOLE_TXTSHADOW);
_vm->_font->draw(SMALL_FONT_ID, ds, ">", 1, 2, _yPos - 10, txt_fgcolor, txt_shcolor, FONT_SHADOW);
_vm->_font->draw(SMALL_FONT_ID, ds, _inputBuf, strlen(_inputBuf),
10, _yPos - 10, txt_fgcolor, txt_shcolor, FONT_SHADOW);
line_y = _yPos - (R_CON_INPUT_H + R_CON_LINE_H);
start_ptr = _scrollback.head;
for (i = 0; i < _linePos; i++) {
if (start_ptr->next) {
start_ptr = start_ptr->next;
} else {
break;
}
}
for (walk_ptr = start_ptr; walk_ptr; walk_ptr = walk_ptr->next) {
_vm->_font->draw(SMALL_FONT_ID, ds, walk_ptr->str_p, walk_ptr->str_len, 2, line_y, txt_fgcolor, txt_shcolor, FONT_SHADOW);
line_y -= R_CON_LINE_H;
if (line_y < -R_CON_LINE_H)
break;
}
return R_SUCCESS;
}
int Console::print(const char *fmt_str, ...) {
char vsstr_p[R_CON_PRINTFLIMIT + 1];
va_list argptr;
int ret_val;
va_start(argptr, fmt_str);
ret_val = vsprintf(vsstr_p, fmt_str, argptr);
_vm->_console->addLine(&_scrollback, _lineMax, vsstr_p);
va_end(argptr);
_linePos = 0;
return ret_val;
}
int Console::cmdUp() {
R_CONSOLE_LINE *start_ptr = _history.head;
int i;
if (!start_ptr) {
return R_SUCCESS;
}
if (_histPos < _history.lines) {
_histPos++;
}
for (i = 1; (i < _histPos); i++) {
if (start_ptr->next) {
start_ptr = start_ptr->next;
} else {
break;
}
}
memset(_inputBuf, 0, R_CON_INPUTBUF_LEN);
strcpy(_inputBuf, start_ptr->str_p);
_inputPos = start_ptr->str_len - 1;
debug(0, "History pos: %d/%d", _histPos, _history.lines);
return R_SUCCESS;
}
int Console::cmdDown(void) {
R_CONSOLE_LINE *start_ptr = _history.head;
int i;
if (_histPos == 1) {
debug(0, "Erased input buffer.");
memset(_inputBuf, 0, R_CON_INPUTBUF_LEN);
_inputPos = 0;
_histPos--;
return R_SUCCESS;
} else if (_histPos) {
_histPos--;
} else {
return R_SUCCESS;
}
for (i = 1; i < _histPos; i++) {
if (start_ptr->next) {
start_ptr = start_ptr->next;
} else {
break;
}
}
memset(_inputBuf, 0, R_CON_INPUTBUF_LEN);
strcpy(_inputBuf, start_ptr->str_p);
_inputPos = start_ptr->str_len - 1;
debug(0, "History pos: %d/%d", _histPos, _history.lines);
return R_SUCCESS;
}
int Console::pageUp() {
int n_lines;
n_lines = (_yMax - R_CON_INPUT_H) / R_CON_LINE_H;
if (_linePos < (_scrollback.lines - n_lines)) {
_linePos += n_lines;
}
debug(0, "Line pos: %d", _linePos);
return R_SUCCESS;
}
int Console::pageDown() {
int n_lines;
n_lines = (_yMax - R_CON_INPUT_H) / R_CON_LINE_H;
if (_linePos > n_lines) {
_linePos -= n_lines;
} else {
_linePos = 0;
}
return R_SUCCESS;
}
int Console::dropConsole(double percent) {
R_SURFACE *back_buf;
if (percent > 1.0) {
percent = 1.0;
}
back_buf = _vm->_gfx->getBackBuffer();
_vm->_console->setDropPos(percent);
_vm->_console->draw(back_buf);
return R_SUCCESS;
}
int Console::raiseConsole(double percent) {
R_SURFACE *back_buf;
if (percent >= 1.0) {
percent = 1.0;
_active = false;
}
back_buf = _vm->_gfx->getBackBuffer();
_vm->_console->setDropPos(1.0 - percent);
_vm->_console->draw(back_buf);
return R_SUCCESS;
}
int Console::setDropPos(double percent) {
double exp_percent;
if (percent > 1.0)
percent = 1.0;
if (percent < 0.0)
percent = 0.0;
exp_percent = percent * percent;
_yPos = (int)(_yMax * exp_percent);
return R_SUCCESS;
}
int Console::addLine(R_CON_SCROLLBACK *scroll, int line_max, const char *constr_p) {
int constr_len;
char *newstr_p;
R_CONSOLE_LINE *newline_p;
int del_lines;
int i;
constr_len = strlen(constr_p) + 1;
newstr_p = (char *)malloc(constr_len);
if (newstr_p == NULL) {
return R_MEM;
}
newline_p = (R_CONSOLE_LINE *)malloc(sizeof(R_CONSOLE_LINE));
if (newline_p == NULL) {
return R_MEM;
}
newline_p->next = NULL;
newline_p->prev = NULL;
strcpy(newstr_p, constr_p);
newline_p->str_p = newstr_p;
newline_p->str_len = constr_len;
if (scroll->head == NULL) {
scroll->head = newline_p;
scroll->tail = newline_p;
} else {
scroll->head->prev = newline_p;
newline_p->next = scroll->head;
scroll->head = newline_p;
}
scroll->lines++;
if (scroll->lines > line_max) {
del_lines = scroll->lines - line_max;
for (i = 0; i < del_lines; i++) {
_vm->_console->deleteLine(scroll);
}
}
return R_SUCCESS;
}
int Console::deleteLine(R_CON_SCROLLBACK *scroll) {
R_CONSOLE_LINE *temp_p = scroll->tail;
if (temp_p->prev == NULL) {
scroll->head = NULL;
scroll->tail = NULL;
} else {
temp_p->prev->next = NULL;
scroll->tail = temp_p->prev;
}
if (temp_p->str_p)
free(temp_p->str_p);
free(temp_p);
scroll->lines--;
return R_SUCCESS;
}
int Console::deleteScroll(R_CON_SCROLLBACK * scroll) {
R_CONSOLE_LINE *walk_ptr;
R_CONSOLE_LINE *temp_ptr;
for (walk_ptr = scroll->head; walk_ptr; walk_ptr = temp_ptr) {
if (walk_ptr->str_p)
free(walk_ptr->str_p);
temp_ptr = walk_ptr->next;
free(walk_ptr);
}
return R_SUCCESS;
}
} // End of namespace Saga
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