(define (process-events)
(let ((events (poll-events)))
- (quit! (not (null? (get-event events `(,SDL_QUIT)))))
- (clear-key-state)
+ (process-screen-events (get-event events `(,SDL_QUIT)))
(process-keyboard-events (get-event events `(,SDL_KEYDOWN ,SDL_KEYUP)))))
-(define quit? #f)
-(define quit! #f)
-(let ((quit #f))
- (set! quit?
- (lambda ()
- quit))
+;;; Screen Events
- (set! quit!
- (lambda (value)
- (set! quit value))))
+(define quit-signal #f)
+
+(define (process-screen-events events)
+ (set! quit-signal #f)
+ (cond ((not (null? events))
+ (let ((event (car events)))
+ (cond ((= (assoc-ref event 'type) SDL_QUIT) (set! quit-signal #t))))
+ (process-screen-events (cdr events)))))
+
+(define (quit?)
+ quit-signal)
+
+
+;;; Keyboard Events
+
+(define keymap (make-hash-table))
+(define pressed (make-hash-table))
+(define released (make-hash-table))
(define (process-keyboard-events events)
+ (clear-key-state)
(cond ((not (null? events))
(let ((event (car events)))
(cond ((= (assoc-ref event 'type) SDL_KEYDOWN) (key-press (assoc-ref event 'key.keysym.sym)))
((= (assoc-ref event 'type) SDL_KEYUP) (key-release (assoc-ref event 'key.keysym.sym)))))
(process-keyboard-events (cdr events)))))
-(define key? #f)
-(define key-pressed? #f)
-(define key-released? #f)
-(define key-press #f)
-(define key-release #f)
-(define clear-keymap #f)
-(define clear-key-state #f)
-
-(let ((keymap (make-hash-table))
- (pressed (make-hash-table))
- (released (make-hash-table)))
- (set! key?
- (lambda (key)
- (hash-ref keymap (get-keycode key))))
-
- (set! key-pressed?
- (lambda (key)
- (hash-ref pressed (get-keycode key))))
-
- (set! key-released?
- (lambda (key)
- (hash-ref released (get-keycode key))))
-
- (set! key-press
- (lambda (key-code)
- (hash-set! keymap key-code #t)
- (hash-set! pressed key-code #t)
- (hash-set! released key-code #f)))
-
- (set! key-release
- (lambda (key-code)
- (hash-set! keymap key-code #f)
- (hash-set! pressed key-code #f)
- (hash-set! released key-code #t)))
-
- (set! clear-keymap
- (lambda ()
- (hash-clear! keymap)))
-
- (set! clear-key-state
- (lambda ()
- (hash-clear! pressed)
- (hash-clear! released))))
-
-(define get-keycode #f)
-(define get-keyname #f)
-
-(let* ((keys
- '((8 . backspace)
- (9 . tab)
- (12 . clear)
- (13 . return)
- (19 . pause)
- (27 . escape)
- (32 . space)
- (33 . exclaim)
- (34 . quotedbl)
- (35 . hash)
- (36 . dollar)
- (38 . ampersand)
- (39 . quote)
- (40 . leftparen)
- (41 . rightparen)
- (42 . asterisk)
- (43 . plus)
- (44 . comma)
- (45 . minus)
- (46 . period)
- (47 . slash)
- (48 . 0)
- (49 . 1)
- (50 . 2)
- (51 . 3)
- (52 . 4)
- (53 . 5)
- (54 . 6)
- (55 . 7)
- (56 . 8)
- (57 . 9)
- (58 . colon)
- (59 . semicolon)
- (60 . less)
- (61 . equals)
- (62 . greater)
- (63 . question)
- (64 . at)
- (269 . kp-minus)
- (270 . kp-plus)
- (273 . up)
- (274 . down)
- (275 . right)
- (276 . left)
- (282 . f1)
- (283 . f2)
- (284 . f3)
- (285 . f4)
- (286 . f5)
- (287 . f6)
- (288 . f7)
- (289 . f8)
- (290 . f9)
- (291 . f10)
- (292 . f11)
- (293 . f12)))
- (keynames (map (lambda (k) (cons (cdr k) (car k))) keys)))
-
- (set! get-keycode
- (lambda (keyname)
- (assoc-ref keynames keyname)))
-
- (set! get-keyname
- (lambda (keycode)
- (assoc-ref keys keycode))))
+(define (key? key)
+ (hash-ref keymap (get-keycode key)))
+
+(define (key-pressed? key)
+ (hash-ref pressed (get-keycode key)))
+
+(define (key-released? key)
+ (hash-ref released (get-keycode key)))
+
+(define (key-press key-code)
+ (hash-set! keymap key-code #t)
+ (hash-set! pressed key-code #t)
+ (hash-set! released key-code #f))
+
+(define (key-release key-code)
+ (hash-set! keymap key-code #f)
+ (hash-set! pressed key-code #f)
+ (hash-set! released key-code #t))
+
+(define (clear-keymap)
+ (hash-clear! keymap))
+
+(define (clear-key-state)
+ (hash-clear! pressed)
+ (hash-clear! released))
+
+
+(define keys
+ '((8 . backspace)
+ (9 . tab)
+ (12 . clear)
+ (13 . return)
+ (19 . pause)
+ (27 . escape)
+ (32 . space)
+ (33 . exclaim)
+ (34 . quotedbl)
+ (35 . hash)
+ (36 . dollar)
+ (38 . ampersand)
+ (39 . quote)
+ (40 . leftparen)
+ (41 . rightparen)
+ (42 . asterisk)
+ (43 . plus)
+ (44 . comma)
+ (45 . minus)
+ (46 . period)
+ (47 . slash)
+ (48 . 0)
+ (49 . 1)
+ (50 . 2)
+ (51 . 3)
+ (52 . 4)
+ (53 . 5)
+ (54 . 6)
+ (55 . 7)
+ (56 . 8)
+ (57 . 9)
+ (58 . colon)
+ (59 . semicolon)
+ (60 . less)
+ (61 . equals)
+ (62 . greater)
+ (63 . question)
+ (64 . at)
+ (269 . kp-minus)
+ (270 . kp-plus)
+ (273 . up)
+ (274 . down)
+ (275 . right)
+ (276 . left)
+ (282 . f1)
+ (283 . f2)
+ (284 . f3)
+ (285 . f4)
+ (286 . f5)
+ (287 . f6)
+ (288 . f7)
+ (289 . f8)
+ (290 . f9)
+ (291 . f10)
+ (292 . f11)
+ (293 . f12)))
+
+(define keynames (map (lambda (k) (cons (cdr k) (car k))) keys))
+
+(define (get-keycode keyname)
+ (assoc-ref keynames keyname))
+
+(define (get-keyname keycode)
+ (assoc-ref keys keycode))
+++ /dev/null
-/* Gacela, a GNU Guile extension for fast games development
- Copyright (C) 2009 by Javier Sancho Fernandez <jsf at jsancho dot org>
-
- 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 3 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, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <stdio.h>
-#include <string.h>
-#include <libguile.h>
-#include <libgen.h>
-#include <readline/readline.h>
-#include <readline/history.h>
-#include <signal.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netdb.h>
-
-#include "gacela_SDL.h"
-#include "gacela_GL.h"
-#include "gacela_FTGL.h"
-
-// Global variables
-int ctrl_c = 0;
-int pid = 0;
-char *history_path = NULL;
-
-
-static int
-find_matching_paren (int k)
-{
- register int i;
- register char c = 0;
- int end_parens_found = 0;
-
- // Choose the corresponding opening bracket
- if (k == ')') c = '(';
- else if (k == ']') c = '[';
- else if (k == '}') c = '{';
-
- for (i = rl_point-2; i >= 0; i--)
- {
- // Is the current character part of a character literal?
- if (i - 2 >= 0
- && rl_line_buffer[i - 1] == '\\'
- && rl_line_buffer[i - 2] == '#')
- ;
- else if (rl_line_buffer[i] == k)
- end_parens_found++;
- else if (rl_line_buffer[i] == '"')
- {
- // Skip over a string literal
- for (i--; i >= 0; i--)
- if (rl_line_buffer[i] == '"'
- && ! (i - 1 >= 0
- && rl_line_buffer[i - 1] == '\\'))
- break;
- }
- else if (rl_line_buffer[i] == c)
- {
- if (end_parens_found==0) return i;
- else --end_parens_found;
- }
- }
- return -1;
-}
-
-static int
-match_paren (int x, int k)
-{
- int tmp;
- int fno;
- SELECT_TYPE readset;
- struct timeval timeout;
-
- rl_insert (x, k);
-
- // Did we just insert a quoted paren? If so, then don't bounce
- if (rl_point - 1 >= 1
- && rl_line_buffer[rl_point - 2] == '\\')
- return 0;
-
- tmp = 500000;
- timeout.tv_sec = tmp / 1000000;
- timeout.tv_usec = tmp % 1000000;
- FD_ZERO (&readset);
- fno = fileno (rl_instream);
- FD_SET (fno, &readset);
-
- if (rl_point > 1)
- {
- tmp = rl_point;
- rl_point = find_matching_paren (k);
- if (rl_point > -1)
- {
- rl_redisplay ();
- scm_std_select (fno + 1, &readset, NULL, NULL, &timeout);
- }
- rl_point = tmp;
- }
- return 0;
-}
-
-void
-ctrl_c_handler (int signum)
-{
- printf ("ERROR: User interrupt\nABORT: (signal)\n");
- ctrl_c = 1;
-}
-
-void
-child_dies_handler (int signum)
-{
- write_history (history_path);
- exit (0);
-}
-
-static void
-init_gacela_client ()
-{
- struct sigaction ctrl_c_action, child_dies_action;
-
- // init bouncing parens
- rl_bind_key (')', match_paren);
- rl_bind_key (']', match_paren);
- rl_bind_key ('}', match_paren);
-
- // SIGINT
- ctrl_c_action.sa_handler = ctrl_c_handler;
- sigemptyset (&ctrl_c_action.sa_mask);
- ctrl_c_action.sa_flags = 0;
-
- sigaction (SIGINT, &ctrl_c_action, NULL);
-
- // SIGALRM
- if (pid != 0) {
- child_dies_action.sa_handler = child_dies_handler;
- sigemptyset (&child_dies_action.sa_mask);
- child_dies_action.sa_flags = 0;
-
- sigaction (SIGALRM, &child_dies_action, NULL);
- }
-
-}
-
-int
-opened_parens (char *line, int k)
-{
- int i;
- int opened = 0;
- char c = 0;
-
- // Choose the corresponding opening bracket
- if (k == ')') c = '(';
- else if (k == ']') c = '[';
- else if (k == '}') c = '{';
-
- for (i = 0; i < strlen (line); i++) {
- // Is the current character part of a character literal?
- if (i + 2 >= strlen (line)
- && line[i] == '#'
- && line[i + 1] == '\\')
- i = i + 2;
- else if (line[i] == '"') {
- // Skip over a string literal
- for (i++; i < strlen (line); i++)
- if (line[i] == '"'
- && line[i - 1] != '\\')
- break;
- }
- else if (line[i] == ';') {
- // Comment until endline
- break;
- }
- else if (line[i] == c)
- opened++;
- else if (line[i] == k)
- opened--;
- }
-
- return opened;
-}
-
-void
-gacela_client (SCM rec_channel, SCM send_channel)
-{
- int n;
- SCM buffer;
- char *line = NULL, *line_for_sending = NULL;
- int opened = 0;
-
- // Command line
- asprintf (&history_path, "%s/.gacela_history", getenv("HOME"));
-
- init_gacela_client ();
- read_history (history_path);
-
- while (1) {
- if (opened > 0)
- line = readline ("... ");
- else
- line = readline ("gacela> ");
-
- if (!line) break;
-
- opened += opened_parens (line, ')');
- ctrl_c = 0;
-
- if (line && *line)
- {
- add_history (line);
- if (line_for_sending == NULL) {
- line_for_sending = strdup (line);
- }
- else {
- line_for_sending = realloc (line_for_sending, strlen (line_for_sending) + strlen (line) + 2);
- line_for_sending = strcat (line_for_sending, "\n");
- line_for_sending = strcat (line_for_sending, line);
- }
-
- if (opened <= 0) {
- scm_write (scm_from_locale_string (line_for_sending), send_channel);
- scm_force_output (send_channel);
- free (line_for_sending);
- line_for_sending = NULL;
-
- while (scm_char_ready_p (rec_channel) == SCM_BOOL_F) {
- if (ctrl_c) break;
- sleep (0.5);
- }
- if (ctrl_c)
- ctrl_c = 0;
- else {
- buffer = scm_read (rec_channel);
- if (strlen (scm_to_locale_string (buffer)) > 0)
- printf ("%s\n", scm_to_locale_string (buffer));
- }
- }
- }
- free (line);
- }
-
- write_history (history_path);
- free (history_path);
-}
-
-static void*
-init_scheme (void *data, int argc, char **argv)
-{
- // Guile configuration
- scm_c_eval_string ("(set-repl-prompt! \"gacela> \")");
- scm_c_eval_string ("(use-modules (ice-9 readline))");
- scm_c_eval_string ("(activate-readline)");
- scm_c_eval_string ("(use-modules (ice-9 optargs))");
- scm_c_eval_string ("(use-modules (ice-9 receive))");
-
- // Bindings for C functions and structs
- SDL_register_functions (NULL);
- GL_register_functions (NULL);
- FTGL_register_functions (NULL);
-
- return NULL;
-}
-
-void
-load_scheme_files (char *path)
-{
- char load_path[strlen (path) + 1024];
-
- sprintf (load_path, "(set! %%load-path (cons \"%s\" %%load-path))", path);
- scm_c_eval_string (load_path);
- scm_primitive_load_path (scm_from_locale_string ("gacela_loader.scm"));
-}
-
-void
-init_gacela (char *path)
-{
- scm_with_guile (&init_scheme, NULL);
- load_scheme_files (path);
- scm_c_eval_string ("(init-video-mode)");
-}
-
-void
-start_server (int port)
-{
- char *start_server;
-
- asprintf (&start_server, "(start-server #:port %d)", port);
- scm_c_eval_string (start_server);
-}
-
-void
-start_local_server (SCM pipes)
-{
- char start_server[100];
-
- scm_c_define ("pipes", pipes);
- scm_c_eval_string ("(start-server #:pipes pipes)");
-}
-
-void
-start_remote_client (char *hostname, int port)
-{
- SCM client_socket;
- char *connect_to_server;
-
- asprintf (&connect_to_server, "(let ((s (socket PF_INET SOCK_STREAM 0))) (connect s AF_INET (car (hostent:addr-list (gethost \"%s\"))) %d) s)", hostname, port);
- client_socket = scm_c_eval_string (connect_to_server);
- gacela_client (client_socket, client_socket);
-}
-
-int
-main (int argc, char *argv[])
-{
- char *arg;
- int mode = 0; // dev: 1, server: 2, client: 3
- char *host;
- int port = 0;
- int i;
- SCM fd1, fd2;
-
- // Checking arguments
- for (i = 1; i < argc; i++) {
- if (strcmp (argv[i], "--dev") == 0)
- mode = 1;
- else if (strncmp (argv[i], "--server", 8) == 0) {
- mode = 2;
- arg = strtok (argv[i], "=");
- arg = strtok (NULL, "=");
- if (arg != NULL)
- port = atoi (arg);
- }
- else if (strncmp (argv[i], "--client", 8) == 0) {
- mode = 3;
- arg = strtok (argv[i], "=");
- arg = strtok (NULL, "=");
- if (arg != NULL) {
- host = strtok (arg, ":");
- arg = strtok (NULL, ":");
- if (arg != NULL)
- port = atoi (arg);
- }
- }
- }
-
- scm_init_guile ();
-
- if (mode == 1) {
- fd1 = scm_pipe ();
- fd2 = scm_pipe ();
- pid = fork ();
-
- if (pid == 0) {
- scm_close (SCM_CAR (fd1));
- scm_close (SCM_CDR (fd2));
- init_gacela (dirname (argv[0]));
- start_local_server (scm_cons (SCM_CAR (fd2), SCM_CDR (fd1)));
- kill (getppid (), SIGALRM);
- }
- else {
- scm_close (SCM_CDR (fd1));
- scm_close (SCM_CAR (fd2));
- gacela_client (SCM_CAR (fd1), SCM_CDR (fd2));
- kill (pid, SIGKILL);
- }
- }
- else if (mode == 2 && port != 0) {
- init_gacela (dirname (argv[0]));
- start_server (port);
- }
- else if (mode == 3 && port != 0)
- start_remote_client (host, port);
- else {
- init_gacela (dirname (argv[0]));
- scm_shell (argc, argv);
- SDL_Quit ();
- }
-}
projects / gacela.git / commitdiff