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7f28c94eda
The interpreter more or less passes all the tests in the z-machine test suite. It should build for every target except Archos (for which it is disabled). git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24267 a1c6a512-1295-4272-9138-f99709370657
301 lines
6.1 KiB
C
301 lines
6.1 KiB
C
/* input.c - High level input functions
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* Copyright (c) 1995-1997 Stefan Jokisch
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*
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* Changes for Rockbox copyright 2009 Torne Wuff
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*
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* This file is part of Frotz.
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*
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* Frotz is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Frotz 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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#include "frotz.h"
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extern int save_undo (void);
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extern zchar stream_read_key (zword, zword, bool);
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extern zchar stream_read_input (int, zchar *, zword, zword, bool, bool);
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extern void tokenise_line (zword, zword, zword, bool);
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/*
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* is_terminator
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*
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* Check if the given key is an input terminator.
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*
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*/
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bool is_terminator (zchar key)
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{
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if (key == ZC_TIME_OUT)
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return TRUE;
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if (key == ZC_RETURN)
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return TRUE;
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if (key >= ZC_HKEY_MIN && key <= ZC_HKEY_MAX)
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return TRUE;
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if (h_terminating_keys != 0)
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if (key >= ZC_ARROW_MIN && key <= ZC_MENU_CLICK) {
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zword addr = h_terminating_keys;
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zbyte c;
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do {
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LOW_BYTE (addr, c)
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if (c == 255 || key == translate_from_zscii (c))
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return TRUE;
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addr++;
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} while (c != 0);
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}
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return FALSE;
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}/* is_terminator */
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/*
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* z_make_menu, add or remove a menu and branch if successful.
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*
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* zargs[0] = number of menu
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* zargs[1] = table of menu entries or 0 to remove menu
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*
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*/
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void z_make_menu (void)
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{
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/* This opcode was only used for the Macintosh version of Journey.
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It controls menus with numbers greater than 2 (menus 0, 1 and 2
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are system menus). Frotz doesn't implement menus yet. */
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branch (FALSE);
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}/* z_make_menu */
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extern bool read_yes_or_no (const char *s);
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/*
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* read_string
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*
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* Read a string from the current input stream.
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*
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*/
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void read_string (int max, zchar *buffer)
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{
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zchar key;
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buffer[0] = 0;
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do {
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key = stream_read_input (max, buffer, 0, 0, FALSE, FALSE);
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} while (key != ZC_RETURN);
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}/* read_string */
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/*
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* read_number
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*
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* Ask the user to type in a number and return it.
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*
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*/
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int read_number (void)
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{
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zchar buffer[6];
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int value = 0;
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int i;
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read_string (5, buffer);
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for (i = 0; buffer[i] != 0; i++)
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if (buffer[i] >= '0' && buffer[i] <= '9')
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value = 10 * value + buffer[i] - '0';
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return value;
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}/* read_number */
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/*
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* z_read, read a line of input and (in V5+) store the terminating key.
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*
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* zargs[0] = address of text buffer
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* zargs[1] = address of token buffer
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* zargs[2] = timeout in tenths of a second (optional)
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* zargs[3] = packed address of routine to be called on timeout
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*
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*/
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void z_read (void)
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{
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zchar buffer[INPUT_BUFFER_SIZE];
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zword addr;
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zchar key;
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zbyte max, size;
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zbyte c;
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int i;
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/* Supply default arguments */
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if (zargc < 3)
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zargs[2] = 0;
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/* Get maximum input size */
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addr = zargs[0];
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LOW_BYTE (addr, max)
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if (h_version <= V4)
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max--;
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if (max >= INPUT_BUFFER_SIZE)
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max = INPUT_BUFFER_SIZE - 1;
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/* Get initial input size */
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if (h_version >= V5) {
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addr++;
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LOW_BYTE (addr, size)
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} else size = 0;
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/* Copy initial input to local buffer */
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for (i = 0; i < size; i++) {
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addr++;
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LOW_BYTE (addr, c)
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buffer[i] = translate_from_zscii (c);
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}
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buffer[i] = 0;
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/* Draw status line for V1 to V3 games */
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if (h_version <= V3)
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z_show_status ();
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/* Read input from current input stream */
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key = stream_read_input (
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max, buffer, /* buffer and size */
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zargs[2], /* timeout value */
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zargs[3], /* timeout routine */
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TRUE, /* enable hot keys */
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h_version == V6); /* no script in V6 */
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if (key == ZC_BAD)
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return;
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/* Perform save_undo for V1 to V4 games */
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if (h_version <= V4)
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save_undo ();
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/* Copy local buffer back to dynamic memory */
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for (i = 0; buffer[i] != 0; i++) {
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if (key == ZC_RETURN) {
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if (buffer[i] >= 'A' && buffer[i] <= 'Z')
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buffer[i] += 'a' - 'A';
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if (buffer[i] >= 0xc0 && buffer[i] <= 0xde && buffer[i] != 0xd7)
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buffer[i] += 0x20;
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}
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storeb ((zword) (zargs[0] + ((h_version <= V4) ? 1 : 2) + i), translate_to_zscii (buffer[i]));
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}
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/* Add null character (V1-V4) or write input length into 2nd byte */
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if (h_version <= V4)
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storeb ((zword) (zargs[0] + 1 + i), 0);
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else
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storeb ((zword) (zargs[0] + 1), i);
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/* Tokenise line if a token buffer is present */
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if (key == ZC_RETURN && zargs[1] != 0)
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tokenise_line (zargs[0], zargs[1], 0, FALSE);
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/* Store key */
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if (h_version >= V5)
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store (translate_to_zscii (key));
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}/* z_read */
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/*
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* z_read_char, read and store a key.
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*
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* zargs[0] = input device (must be 1)
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* zargs[1] = timeout in tenths of a second (optional)
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* zargs[2] = packed address of routine to be called on timeout
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*
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*/
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void z_read_char (void)
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{
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zchar key;
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/* Supply default arguments */
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if (zargc < 2)
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zargs[1] = 0;
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/* Read input from the current input stream */
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key = stream_read_key (
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zargs[1], /* timeout value */
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zargs[2], /* timeout routine */
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TRUE); /* enable hot keys */
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if (key == ZC_BAD)
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return;
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/* Store key */
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store (translate_to_zscii (key));
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}/* z_read_char */
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/*
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* z_read_mouse, write the current mouse status into a table.
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*
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* zargs[0] = address of table
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*
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*/
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void z_read_mouse (void)
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{
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zword btn;
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/* Read the mouse position and which buttons are down */
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btn = os_read_mouse ();
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hx_mouse_y = mouse_y;
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hx_mouse_x = mouse_x;
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storew ((zword) (zargs[0] + 0), hx_mouse_y);
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storew ((zword) (zargs[0] + 2), hx_mouse_x);
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storew ((zword) (zargs[0] + 4), btn); /* mouse button bits */
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storew ((zword) (zargs[0] + 6), 0); /* menu selection */
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}/* z_read_mouse */
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