02a48aa8cf
The consolidation of global variables from scattered source
files into decl.c and declared in decl.h was begun in 3.7.0.
Their placement in common files was done for centralized
initialization and potential re-initialization during a
"play again" scenario.
It wasn't really necessary for all of them to be housed in a
single huge structure to meet the "play again" requirement,
and the single huge structure has been a little unwieldy when
it comes to maintenance.
Following this commit, instead of one single extremely large structure
named 'g' to house all of the relocated global variables, they
are distributed into several ga through gz.
To make things easy for the developer, each variable is placed
into the struct corresponding to the starting letter of the variable.
That way, no lookup is required in order to know which struct houses
a particular variable, it is a simple match to the starting letter
for all the centralized global variables.
A global variable named 'amulets', would be found in ga.
ga.amulets
^ ^
A global varable named 'move', would be found in gm.
gm.moves
^ ^
A global variable named 'val_for_n_or_more' would be found in gv.
gv.val_for_n_or_more
^ ^
A global variable named 'youmonst' would be found in gy.
gy.youmonst
^ ^
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/* NetHack 3.6 mhinput.c $NHDT-Date: 1432512798 2015/05/25 00:13:18 $ $NHDT-Branch: master $:$NHDT-Revision: 1.11 $ */
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/* Copyright (C) 2001 by Alex Kompel */
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/* NetHack may be freely redistributed. See license for details. */
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#include <assert.h>
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#include "winMS.h"
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#include "mhinput.h"
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/* nethack input queue functions */
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#define NH_INPUT_BUFFER_SIZE 64
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/* as it stands right now we need only one slot
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since events are processed almost the same time as
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they occur but I like large round numbers */
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static MSNHEvent nhi_input_buffer[NH_INPUT_BUFFER_SIZE];
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static int nhi_init_input = 0;
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static int nhi_read_pos = 0;
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static int nhi_write_pos = 0;
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/* initialize input queue */
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void
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mswin_nh_input_init()
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{
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if (!nhi_init_input) {
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nhi_init_input = 1;
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ZeroMemory(nhi_input_buffer, sizeof(nhi_input_buffer));
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nhi_read_pos = 0;
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nhi_write_pos = 0;
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}
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}
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/* check for input */
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int
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mswin_have_input()
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{
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return
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#ifdef SAFERHANGUP
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/* we always have input (ESC) if hangup was requested */
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gp.program_state.done_hup ||
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#endif
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(nhi_read_pos != nhi_write_pos);
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}
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/* add event to the queue */
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void
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mswin_input_push(PMSNHEvent event)
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{
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int new_write_pos;
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if (!nhi_init_input)
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mswin_nh_input_init();
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new_write_pos = (nhi_write_pos + 1) % NH_INPUT_BUFFER_SIZE;
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if (new_write_pos != nhi_read_pos) {
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memcpy(nhi_input_buffer + nhi_write_pos, event, sizeof(*event));
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nhi_write_pos = new_write_pos;
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}
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}
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/* get event from the queue and delete it */
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PMSNHEvent
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mswin_input_pop()
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{
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PMSNHEvent retval;
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#ifdef SAFERHANGUP
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/* always return ESC when hangup was requested */
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if (gp.program_state.done_hup) {
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static MSNHEvent hangup_event;
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hangup_event.type = NHEVENT_CHAR;
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hangup_event.kbd.ch = '\033';
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return &hangup_event;
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}
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#endif
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if (!nhi_init_input)
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mswin_nh_input_init();
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if (nhi_read_pos != nhi_write_pos) {
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retval = &nhi_input_buffer[nhi_read_pos];
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nhi_read_pos = (nhi_read_pos + 1) % NH_INPUT_BUFFER_SIZE;
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} else {
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retval = NULL;
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}
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return retval;
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}
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/* get event from the queue but leave it there */
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PMSNHEvent
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mswin_input_peek()
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{
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PMSNHEvent retval;
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#ifdef SAFERHANGUP
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/* always return ESC when hangup was requested */
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if (gp.program_state.done_hup) {
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static MSNHEvent hangup_event;
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hangup_event.type = NHEVENT_CHAR;
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hangup_event.kbd.ch = '\033';
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return &hangup_event;
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}
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#endif
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if (!nhi_init_input)
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mswin_nh_input_init();
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if (nhi_read_pos != nhi_write_pos) {
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retval = &nhi_input_buffer[nhi_read_pos];
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} else {
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retval = NULL;
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}
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return retval;
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}
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