From 9d5134f4fb73e3d534b5c3daed943c26b15c2e3f Mon Sep 17 00:00:00 2001 From: jsancho Date: Sun, 25 Dec 2011 12:18:25 +0000 Subject: [PATCH] Better code structure for events. --- src/events.scm | 237 ++++++++++++++---------------- src/gacela.c | 388 ------------------------------------------------- 2 files changed, 113 insertions(+), 512 deletions(-) delete mode 100644 src/gacela.c diff --git a/src/events.scm b/src/events.scm index d1962da..dfe9e60 100644 --- a/src/events.scm +++ b/src/events.scm @@ -39,139 +39,128 @@ (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)) diff --git a/src/gacela.c b/src/gacela.c deleted file mode 100644 index af78da9..0000000 --- a/src/gacela.c +++ /dev/null @@ -1,388 +0,0 @@ -/* Gacela, a GNU Guile extension for fast games development - Copyright (C) 2009 by Javier Sancho Fernandez - - 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 . -*/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#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 (); - } -} -- 2.39.2