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/* input.c - High level input functions
* Copyright (c) 1995-1997 Stefan Jokisch
*
* Changes for Rockbox copyright 2009 Torne Wuff
*
* This file is part of Frotz.
*
* Frotz 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.
*
* Frotz 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
*/
#include "frotz.h"
extern int save_undo (void);
extern zchar stream_read_key (zword, zword, bool);
extern zchar stream_read_input (int, zchar *, zword, zword, bool, bool);
extern void tokenise_line (zword, zword, zword, bool);
/*
* is_terminator
*
* Check if the given key is an input terminator.
*
*/
bool is_terminator (zchar key)
{
if (key == ZC_TIME_OUT)
return TRUE;
if (key == ZC_RETURN)
return TRUE;
if (key >= ZC_HKEY_MIN && key <= ZC_HKEY_MAX)
return TRUE;
if (h_terminating_keys != 0)
if (key >= ZC_ARROW_MIN && key <= ZC_MENU_CLICK) {
zword addr = h_terminating_keys;
zbyte c;
do {
LOW_BYTE (addr, c)
if (c == 255 || key == translate_from_zscii (c))
return TRUE;
addr++;
} while (c != 0);
}
return FALSE;
}/* is_terminator */
/*
* z_make_menu, add or remove a menu and branch if successful.
*
* zargs[0] = number of menu
* zargs[1] = table of menu entries or 0 to remove menu
*
*/
void z_make_menu (void)
{
/* This opcode was only used for the Macintosh version of Journey.
It controls menus with numbers greater than 2 (menus 0, 1 and 2
are system menus). Frotz doesn't implement menus yet. */
branch (FALSE);
}/* z_make_menu */
extern bool read_yes_or_no (const char *s);
/*
* read_string
*
* Read a string from the current input stream.
*
*/
void read_string (int max, zchar *buffer)
{
zchar key;
buffer[0] = 0;
do {
key = stream_read_input (max, buffer, 0, 0, FALSE, FALSE);
} while (key != ZC_RETURN);
}/* read_string */
/*
* read_number
*
* Ask the user to type in a number and return it.
*
*/
int read_number (void)
{
zchar buffer[6];
int value = 0;
int i;
read_string (5, buffer);
for (i = 0; buffer[i] != 0; i++)
if (buffer[i] >= '0' && buffer[i] <= '9')
value = 10 * value + buffer[i] - '0';
return value;
}/* read_number */
/*
* z_read, read a line of input and (in V5+) store the terminating key.
*
* zargs[0] = address of text buffer
* zargs[1] = address of token buffer
* zargs[2] = timeout in tenths of a second (optional)
* zargs[3] = packed address of routine to be called on timeout
*
*/
void z_read (void)
{
zchar buffer[INPUT_BUFFER_SIZE];
zword addr;
zchar key;
zbyte max, size;
zbyte c;
int i;
/* Supply default arguments */
if (zargc < 3)
zargs[2] = 0;
/* Get maximum input size */
addr = zargs[0];
LOW_BYTE (addr, max)
if (h_version <= V4)
max--;
if (max >= INPUT_BUFFER_SIZE)
max = INPUT_BUFFER_SIZE - 1;
/* Get initial input size */
if (h_version >= V5) {
addr++;
LOW_BYTE (addr, size)
} else size = 0;
/* Copy initial input to local buffer */
for (i = 0; i < size; i++) {
addr++;
LOW_BYTE (addr, c)
buffer[i] = translate_from_zscii (c);
}
buffer[i] = 0;
/* Draw status line for V1 to V3 games */
if (h_version <= V3)
z_show_status ();
/* Read input from current input stream */
key = stream_read_input (
max, buffer, /* buffer and size */
zargs[2], /* timeout value */
zargs[3], /* timeout routine */
TRUE, /* enable hot keys */
h_version == V6); /* no script in V6 */
if (key == ZC_BAD)
return;
/* Perform save_undo for V1 to V4 games */
if (h_version <= V4)
save_undo ();
/* Copy local buffer back to dynamic memory */
for (i = 0; buffer[i] != 0; i++) {
if (key == ZC_RETURN) {
if (buffer[i] >= 'A' && buffer[i] <= 'Z')
buffer[i] += 'a' - 'A';
if (buffer[i] >= 0xc0 && buffer[i] <= 0xde && buffer[i] != 0xd7)
buffer[i] += 0x20;
}
storeb ((zword) (zargs[0] + ((h_version <= V4) ? 1 : 2) + i), translate_to_zscii (buffer[i]));
}
/* Add null character (V1-V4) or write input length into 2nd byte */
if (h_version <= V4)
storeb ((zword) (zargs[0] + 1 + i), 0);
else
storeb ((zword) (zargs[0] + 1), i);
/* Tokenise line if a token buffer is present */
if (key == ZC_RETURN && zargs[1] != 0)
tokenise_line (zargs[0], zargs[1], 0, FALSE);
/* Store key */
if (h_version >= V5)
store (translate_to_zscii (key));
}/* z_read */
/*
* z_read_char, read and store a key.
*
* zargs[0] = input device (must be 1)
* zargs[1] = timeout in tenths of a second (optional)
* zargs[2] = packed address of routine to be called on timeout
*
*/
void z_read_char (void)
{
zchar key;
/* Supply default arguments */
if (zargc < 2)
zargs[1] = 0;
/* Read input from the current input stream */
key = stream_read_key (
zargs[1], /* timeout value */
zargs[2], /* timeout routine */
TRUE); /* enable hot keys */
if (key == ZC_BAD)
return;
/* Store key */
store (translate_to_zscii (key));
}/* z_read_char */
/*
* z_read_mouse, write the current mouse status into a table.
*
* zargs[0] = address of table
*
*/
void z_read_mouse (void)
{
zword btn;
/* Read the mouse position and which buttons are down */
btn = os_read_mouse ();
hx_mouse_y = mouse_y;
hx_mouse_x = mouse_x;
storew ((zword) (zargs[0] + 0), hx_mouse_y);
storew ((zword) (zargs[0] + 2), hx_mouse_x);
storew ((zword) (zargs[0] + 4), btn); /* mouse button bits */
storew ((zword) (zargs[0] + 6), 0); /* menu selection */
}/* z_read_mouse */
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