From 2077648d589ede39a1e47d331ba4a8b57dc25970 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Fri, 22 Feb 2019 15:37:31 +0200 Subject: [PATCH] initial commit --- .gitignore | 4 + COPYING | 674 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Makefile | 57 +++++ README.md | 16 ++ src/game.c | 62 ++++++ src/game.h | 85 ++++++++ src/logger.c | 183 ++++++++++++++++ src/logger.h | 22 ++ src/main.c | 240 +++++++++++++++++++++ src/opengl.c | 118 ++++++++++ src/opengl.h | 16 ++ src/opt.c | 116 ++++++++++ src/opt.h | 16 ++ src/optcfg.c | 354 ++++++++++++++++++++++++++++++ src/optcfg.h | 90 ++++++++ src/osd.c | 207 ++++++++++++++++++ src/osd.h | 21 ++ 17 files changed, 2281 insertions(+) create mode 100644 .gitignore create mode 100644 COPYING create mode 100644 Makefile create mode 100644 README.md create mode 100644 src/game.c create mode 100644 src/game.h create mode 100644 src/logger.c create mode 100644 src/logger.h create mode 100644 src/main.c create mode 100644 src/opengl.c create mode 100644 src/opengl.h create mode 100644 src/opt.c create mode 100644 src/opt.h create mode 100644 src/optcfg.c create mode 100644 src/optcfg.h create mode 100644 src/osd.c create mode 100644 src/osd.h diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..a31e51f --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +*.o +*.d +*.swp +vrtris diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/COPYING @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..a773a6e --- /dev/null +++ b/Makefile @@ -0,0 +1,57 @@ +src = $(wildcard src/*.c) +obj = $(src:.c=.o) +dep = $(obj:.o=.d) +bin = vrtris + + +CFLAGS = -pedantic -Wall -g `pkg-config --cflags sdl2` +LDFLAGS = $(libsys) $(libgl) `pkg-config --libs sdl2` -ldrawtext + +sys ?= $(shell uname -s | sed 's/MINGW.*/mingw/') + +ifeq ($(sys), mingw) + bin = vrtris.exe + + libgl = -lopengl32 -lglew32 + libsys = -lmingw32 -lwinmm -mwindows + +else ifeq ($(sys), Darwin) + libgl = -framework OpenGL -lGLEW + +else + libgl = -lGL -lGLEW +endif + + +$(bin): $(obj) + $(CC) -o $@ $(obj) $(LDFLAGS) + +-include $(dep) + +.PHONY: cross +cross: + $(MAKE) CC=i686-w64-mingw32-gcc sys=mingw + +.PHONY: cross-clean +cross-clean: + $(MAKE) CC=i686-w64-mingw32-gcc sys=mingw clean + +.PHONY: clean +clean: + rm -f $(obj) $(bin) + +.PHONY: cleandep +cleandep: + rm -f $(dep) + +.PHONY: install +install: $(bin) $(data) + mkdir -p $(DESTDIR)$(PREFIX)/bin $(DESTDIR)$(PREFIX)/share/vrtris + cp $(bin) $(DESTDIR)$(PREFIX)/bin/$(bin) + cp $(data) $(DESTDIR)$(PREFIX)/share/vrtris + +.PHONY: uninstall +uninstall: + rm -f $(DESTDIR)$(PREFIX)/bin/$(bin) + for i in $(data); do rm -f $(DESTDIR)$(PREFIX)/share/vrtris/$i; done + rmdir $(DESTDIR)$(PREFIX)/share/vrtris diff --git a/README.md b/README.md new file mode 100644 index 0000000..b0c88c0 --- /dev/null +++ b/README.md @@ -0,0 +1,16 @@ +vrtris - tetris in virtual reality +================================== + +VRtris is a tetris game in VR. Put on your HMD, grab a cool drink (ideally with +some kind of straw), and enjoy retro puzzle gaming at its finest! + +Not done yet, check back later. + +License +------- +Copyright (C) 2019 John Tsiombikas + +This program is free software. Feel free to use, modify and/or redistribute it +under the terms of the GNU General Public License version 3, or at your option, +any later version published by the Free Software Foundation. See COPYING for +details. diff --git a/src/game.c b/src/game.c new file mode 100644 index 0000000..399a5ea --- /dev/null +++ b/src/game.c @@ -0,0 +1,62 @@ +#include +#include "opengl.h" +#include "game.h" +#include "opt.h" + +int game_init(int argc, char **argv) +{ + if(init_opengl() == -1) { + return -1; + } + + if(init_options(argc, argv, "vrtris.conf") == -1) { + return -1; + } + + return 0; +} + +void game_cleanup() +{ +} + +void game_display() +{ + glClear(GL_COLOR_BUFFER_BIT); + + game_swap_buffers(); + assert(glGetError() == GL_NO_ERROR); +} + +void game_reshape(int x, int y) +{ +} + +void game_keyboard(int key, int pressed) +{ +} + +void game_mouse_button(int bn, int pressed, int x, int y) +{ +} + +void game_mouse_motion(int x, int y) +{ +} + +void game_mouse_delta(int dx, int dy) +{ +} + +void game_mouse_wheel(int dir) +{ +} + + +void game_gamepad_axis(int axis, float val) +{ +} + +void game_gamepad_button(int bn, int pressed) +{ +} diff --git a/src/game.h b/src/game.h new file mode 100644 index 0000000..a3455f0 --- /dev/null +++ b/src/game.h @@ -0,0 +1,85 @@ +#ifndef GAME_H_ +#define GAME_H_ + +long time_msec; +int win_width, win_height; +int vp_width, vp_height; /* viewport size differs from win size during VR eye rendering */ +float win_aspect; +int fb_srgb; + +enum { + MOD_SHIFT = 1, + MOD_ALT = 2, + MOD_CTRL = 4 +}; + +/* special keys */ +enum { + KEY_DEL = 127, + KEY_LEFT, + KEY_RIGHT, + KEY_UP, + KEY_DOWN, + KEY_PGUP, + KEY_PGDOWN, + KEY_HOME, + KEY_END, + KEY_F1, + KEY_F2, + KEY_F3, + KEY_F4, + KEY_F5, + KEY_F6, + KEY_F7, + KEY_F8, + KEY_F9, + KEY_F10, + KEY_F11, + KEY_F12 +}; + +/* XXX make sure these match with SDL_GameControllerButton */ +enum { + GPAD_A, + GPAD_B, + GPAD_X, + GPAD_Y, + GPAD_BACK, + GPAD_GUIDE, + GPAD_START, + GPAD_LSTICK, + GPAD_RSTICK, + GPAD_L, + GPAD_R, + GPAD_UP, + GPAD_DOWN, + GPAD_LEFT, + GPAD_RIGHT, +}; + +int game_init(int argc, char **argv); +void game_cleanup(); + +void game_display(); +void game_reshape(int x, int y); + +void game_keyboard(int key, int pressed); +void game_mouse_button(int bn, int pressed, int x, int y); +void game_mouse_motion(int x, int y); +void game_mouse_delta(int dx, int dy); +void game_mouse_wheel(int dir); + +void game_gamepad_axis(int axis, float val); +void game_gamepad_button(int bn, int pressed); + +/* the following functions are implemented by the backend (main.c) */ +void game_quit(); +void game_swap_buffers(); +unsigned int game_get_modifiers(); + +void game_resize(int x, int y); +void game_fullscreen(int fs); +void game_toggle_fullscreen(); +int game_is_fullscreen(); + +#endif // GAME_H_ diff --git a/src/logger.c b/src/logger.c new file mode 100644 index 0000000..a48f179 --- /dev/null +++ b/src/logger.c @@ -0,0 +1,183 @@ +#include +#include +#include +#include "logger.h" +#include "osd.h" + +#if defined(unix) || defined(__unix__) || defined(__APPLE__) +#include +#elif defined(WIN32) +#include +#endif + +#define UI_MSG_TIMEOUT 4000 + +enum { LOG_INFO, LOG_WARNING, LOG_ERROR, LOG_FATAL, LOG_DEBUG }; + +static int typecolor(int type); +static const char *typeprefix(int type); + +static FILE *fp; +static FILE *logfile; + +static void logmsg(int type, const char *fmt, va_list ap) +{ + va_list ap_orig; + + if(!fp) fp = stdout; + + va_copy(ap_orig, ap); + +#if defined(unix) || defined(__unix__) || (defined(__APPLE__) && !defined(TARGET_IPHONE)) + if(isatty(fileno(fp)) && type != LOG_INFO) { + int c = typecolor(type); + fprintf(fp, "\033[%dm", c); + vfprintf(fp, fmt, ap); + fprintf(fp, "\033[0m"); + } else +#endif + { + fprintf(fp, "%s", typeprefix(type)); + vfprintf(fp, fmt, ap); + } + if(type == LOG_ERROR || type == LOG_FATAL || type == LOG_DEBUG) { + fflush(fp); + } + + if(logfile) { + va_end(ap); + va_copy(ap, ap_orig); + fprintf(logfile, "%s", typeprefix(type)); + vfprintf(logfile, fmt, ap); + } + +#ifdef WIN32 + if(type == LOG_FATAL) { + static char msgbuf[1024]; + vsnprintf(msgbuf, sizeof msgbuf - 1, fmt, ap_orig); + msgbuf[sizeof msgbuf - 1] = 0; + MessageBox(0, msgbuf, "Fatal error", MB_OK | MB_ICONSTOP); + } +#endif + + va_end(ap_orig); +} + +static void close_logfile(void) +{ + if(logfile) fclose(logfile); +} + +void set_log_file(const char *fname) +{ + static int init_once; + + close_logfile(); + logfile = fopen(fname, "w"); + + if(!init_once) { + atexit(close_logfile); + init_once = 1; + } +} + +void info_log(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + logmsg(LOG_INFO, fmt, ap); + va_end(ap); +} + +void warning_log(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + logmsg(LOG_WARNING, fmt, ap); + va_end(ap); + + va_start(ap, fmt); + show_messagev(UI_MSG_TIMEOUT, 1.0, 0.8, 0.1, fmt, ap); + va_end(ap); +} + +void error_log(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + logmsg(LOG_ERROR, fmt, ap); + va_end(ap); + + va_start(ap, fmt); + show_messagev(UI_MSG_TIMEOUT, 1.0, 0.1, 0.1, fmt, ap); + va_end(ap); +} + +void fatal_log(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + logmsg(LOG_FATAL, fmt, ap); + va_end(ap); +} + +void debug_log(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + logmsg(LOG_DEBUG, fmt, ap); + va_end(ap); +} + +enum { + BLACK = 0, + RED, + GREEN, + YELLOW, + BLUE, + MAGENTA, + CYAN, + WHITE +}; + +#define ANSI_FGCOLOR(x) (30 + (x)) +#define ANSI_BGCOLOR(x) (40 + (x)) + +static int typecolor(int type) +{ + switch(type) { + case LOG_ERROR: + return ANSI_FGCOLOR(RED); + case LOG_FATAL: + return ANSI_FGCOLOR(RED); // TODO differentiate from LOG_ERROR + case LOG_WARNING: + return ANSI_FGCOLOR(YELLOW); + case LOG_DEBUG: + return ANSI_FGCOLOR(MAGENTA); + default: + break; + } + return 37; +} + +static const char *typeprefix(int type) +{ + switch(type) { + case LOG_ERROR: + return "E: "; + case LOG_FATAL: + return "F: "; + case LOG_WARNING: + return "W: "; + case LOG_DEBUG: + return "D: "; + default: + break; + } + return ""; +} diff --git a/src/logger.h b/src/logger.h new file mode 100644 index 0000000..28821cd --- /dev/null +++ b/src/logger.h @@ -0,0 +1,22 @@ +#ifndef LOGGER_H_ +#define LOGGER_H_ + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +void set_log_file(const char *fname); + +void info_log(const char *fmt, ...); +void warning_log(const char *fmt, ...); +void error_log(const char *fmt, ...); +void fatal_log(const char *fmt, ...); +void debug_log(const char *fmt, ...); + +#ifdef __cplusplus +} +#endif + +#endif // LOGGER_H_ diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..834ece3 --- /dev/null +++ b/src/main.c @@ -0,0 +1,240 @@ +#include +#include +#include +#include +#include "game.h" + +static void process_event(SDL_Event *ev); +static void proc_modkeys(); +static int translate_keysym(SDL_Keycode sym); + +static SDL_Window *win; +static SDL_GLContext ctx; +static int fullscreen; +static int quit; + +static unsigned int start_time; +static unsigned int modkeys; + +SDL_GameController *gamepad; + +static int scale_factor = 1; + +#define DEFPOS SDL_WINDOWPOS_UNDEFINED + +int main(int argc, char **argv) +{ + int i; + unsigned int sdlflags; + + if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0) { + fprintf(stderr, "failed to initialize SDL\n"); + return 1; + } + + SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1); + SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 8); + SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 1); +#ifndef NDEBUG + SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG); +#endif + + sdlflags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI; + + if(!(win = SDL_CreateWindow("vrtris", DEFPOS, DEFPOS, 1024, 768, sdlflags))) { + /* try again without sRGB capability */ + SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 0); + if(!(win = SDL_CreateWindow("vrtris", DEFPOS, DEFPOS, 1024, 768, sdlflags))) { + fprintf(stderr, "failed to create window\n"); + SDL_Quit(); + return 1; + } + fprintf(stderr, "failed to get an sRGB framebuffer\n"); + } + SDL_GL_GetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, &fb_srgb); + + if(!(ctx = SDL_GL_CreateContext(win))) { + fprintf(stderr, "failed to create OpenGL context\n"); + SDL_Quit(); + return 1; + } + SDL_GL_GetDrawableSize(win, &win_width, &win_height); + win_aspect = (float)win_width / (float)win_height; + + printf("detected %d joysticks\n", SDL_NumJoysticks()); + for(i=0; itype) { + case SDL_QUIT: + quit = 1; + break; + + case SDL_KEYDOWN: + case SDL_KEYUP: + proc_modkeys(); + if((key = translate_keysym(ev->key.keysym.sym)) != -1) { + game_keyboard(key, ev->key.state == SDL_PRESSED); + } + break; + + case SDL_MOUSEBUTTONDOWN: + case SDL_MOUSEBUTTONUP: + proc_modkeys(); + game_mouse_button(ev->button.button - SDL_BUTTON_LEFT, ev->button.state == SDL_PRESSED, + ev->button.x * scale_factor, ev->button.y * scale_factor); + break; + + case SDL_MOUSEMOTION: + game_mouse_motion(ev->motion.x * scale_factor, ev->motion.y * scale_factor); + break; + + case SDL_MOUSEWHEEL: + game_mouse_wheel(ev->wheel.y); + break; + + case SDL_WINDOWEVENT: + if(ev->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) { + SDL_GL_GetDrawableSize(win, &win_width, &win_height); + win_aspect = (float)win_width / (float)win_height; + scale_factor = win_width / ev->window.data1; + game_reshape(win_width, win_height); + } + break; + + case SDL_CONTROLLERAXISMOTION: + game_gamepad_axis(ev->caxis.axis, ev->caxis.value / 32768.0f); + break; + + case SDL_CONTROLLERBUTTONDOWN: + case SDL_CONTROLLERBUTTONUP: + game_gamepad_button(ev->cbutton.button, ev->type == SDL_CONTROLLERBUTTONDOWN); + break; + } +} + +static void proc_modkeys() +{ + modkeys = 0; + SDL_Keymod sdlmod = SDL_GetModState(); + if(sdlmod & KMOD_SHIFT) { + modkeys |= MOD_SHIFT; + } + if(sdlmod & KMOD_ALT) { + modkeys |= MOD_ALT; + } + if(sdlmod & KMOD_CTRL) { + modkeys |= MOD_CTRL; + } +} + +static int translate_keysym(SDL_Keycode sym) +{ + switch(sym) { + case SDLK_RETURN: + return '\n'; + case SDLK_DELETE: + return KEY_DEL; + case SDLK_LEFT: + return KEY_LEFT; + case SDLK_RIGHT: + return KEY_RIGHT; + case SDLK_UP: + return KEY_UP; + case SDLK_DOWN: + return KEY_DOWN; + case SDLK_PAGEUP: + return KEY_PGUP; + case SDLK_PAGEDOWN: + return KEY_PGDOWN; + case SDLK_HOME: + return KEY_HOME; + case SDLK_END: + return KEY_END; + default: + break; + } + + if(sym < 127) { + return sym; + } + if(sym >= SDLK_F1 && sym <= SDLK_F12) { + return KEY_F1 + sym - SDLK_F1; + } + return -1; +} diff --git a/src/opengl.c b/src/opengl.c new file mode 100644 index 0000000..281ec44 --- /dev/null +++ b/src/opengl.c @@ -0,0 +1,118 @@ +#include +#include "opengl.h" +#include "logger.h" + + +static void GLAPIENTRY gldebug_logger(GLenum src, GLenum type, GLuint id, GLenum severity, + GLsizei len, const char *msg, const void *cls); + +static const char *gldebug_srcstr(unsigned int src); +static const char *gldebug_typestr(unsigned int type); + +struct GLCaps glcaps; + +int init_opengl(void) +{ + glewInit(); + + glcaps.debug = GLEW_ARB_debug_output; + +#ifndef NDEBUG + if(glcaps.debug) { + info_log("Installing OpenGL debug callback\n"); + glDebugMessageCallbackARB(gldebug_logger, 0); + } +#endif + + return 0; +} + +void dump_gl_texture(unsigned int tex, const char *fname) +{ + FILE *fp; + int i, width, height; + unsigned char *pixels; + + glBindTexture(GL_TEXTURE_2D, tex); + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width); + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height); + + if(!(pixels = malloc(width * height * 3))) { + return; + } + glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels); + + if(!(fp = fopen(fname, "wb"))) { + free(pixels); + return; + } + fprintf(fp, "P6\n%d %d\n255\n", width, height); + for(i=0; i + +struct GLCaps { + int debug; /* ARB_debug_output */ +}; + +extern struct GLCaps glcaps; + +int init_opengl(void); + +void dump_gl_texture(unsigned int tex, const char *fname); + +#endif /* OPENGL_H_ */ diff --git a/src/opt.c b/src/opt.c new file mode 100644 index 0000000..91eed5d --- /dev/null +++ b/src/opt.c @@ -0,0 +1,116 @@ +#include +#include +#include +#include "optcfg.h" +#include "opt.h" + + +struct options def_opt = { 1024, 768, 0 }; + +enum { + OPTCFG_SIZE, + OPTCFG_VR, + OPTCFG_FULLSCREEN, + OPTCFG_WINDOWED, + OPTCFG_HELP +}; + +static struct optcfg_option options[] = { + // short, long, id, desc + {'s', "size", OPTCFG_SIZE, "window size (WxH)"}, + {0, "vr", OPTCFG_VR, "enable VR mode"}, + {'f', "fullscreen", OPTCFG_FULLSCREEN, "run in fullscreen mode"}, + {'w', "windowed", OPTCFG_WINDOWED, "run in windowed mode"}, + {'h', "help", OPTCFG_HELP, "print usage and exit"}, + OPTCFG_OPTIONS_END +}; + +static int opt_handler(struct optcfg *oc, int opt, void *cls); +static int arg_handler(struct optcfg *oc, const char *arg, void *cls); + +static char *argv0; + +int init_options(int argc, char **argv, const char *cfgfile) +{ + struct optcfg *oc; + + /* default options */ + opt = def_opt; + + argv0 = argv[0]; + + oc = optcfg_init(options); + optcfg_set_opt_callback(oc, opt_handler, 0); + optcfg_set_arg_callback(oc, arg_handler, 0); + + if(cfgfile) { + optcfg_parse_config_file(oc, cfgfile); + } + + if(argv && optcfg_parse_args(oc, argc, argv) == -1) { + fprintf(stderr, "invalid option\n"); + optcfg_destroy(oc); + return -1; + } + + optcfg_destroy(oc); + return 0; +} + +static int is_enabled(struct optcfg *oc) +{ + int res; + optcfg_enabled_value(oc, &res); + return res != 0; +} + +static int opt_handler(struct optcfg *oc, int optid, void *cls) +{ + switch(optid) { + case OPTCFG_SIZE: + { + char *valstr = optcfg_next_value(oc); + if(!valstr || sscanf(valstr, "%dx%d", &opt.width, &opt.height) != 2) { + fprintf(stderr, "size must be in the form: WIDTHxHEIGHT\n"); + return -1; + } + } + break; + + case OPTCFG_VR: + if(is_enabled(oc)) { + opt.flags |= OPT_VR; + } else { + opt.flags &= ~OPT_VR; + } + break; + + case OPTCFG_FULLSCREEN: + if(is_enabled(oc)) { + opt.flags |= OPT_FULLSCREEN; + } else { + opt.flags &= ~OPT_FULLSCREEN; + } + break; + + case OPTCFG_WINDOWED: + if(is_enabled(oc)) { + opt.flags &= ~OPT_FULLSCREEN; + } else { + opt.flags |= OPT_FULLSCREEN; + } + break; + + case OPTCFG_HELP: + printf("Usage: %s [options]\nOptions:\n", argv0); + optcfg_print_options(oc); + exit(0); + } + return 0; +} + +static int arg_handler(struct optcfg *oc, const char *arg, void *cls) +{ + fprintf(stderr, "unexpected argument: %s\n", arg); + return -1; +} diff --git a/src/opt.h b/src/opt.h new file mode 100644 index 0000000..c5d07e4 --- /dev/null +++ b/src/opt.h @@ -0,0 +1,16 @@ +#ifndef OPT_H_ +#define OPT_H_ + +enum { + OPT_VR = 1, + OPT_FULLSCREEN = 2 +}; + +struct options { + int width, height; + unsigned int flags; +} opt, def_opt; + +int init_options(int argc, char **argv, const char *cfgfile); + +#endif /* OPT_H_ */ diff --git a/src/optcfg.c b/src/optcfg.c new file mode 100644 index 0000000..c67c299 --- /dev/null +++ b/src/optcfg.c @@ -0,0 +1,354 @@ +#include +#include +#include +#include +#if defined(WIN32) || defined(__WIN32__) +#include +#else +#include +#endif +#include "optcfg.h" + +struct optcfg { + struct optcfg_option *optlist; + + optcfg_opt_callback opt_func; + void *opt_cls; + optcfg_arg_callback arg_func; + void *arg_cls; + + int err_abort; + + /* argument parsing state */ + char **argv; + int argidx; + int disable_opt; + + /* config file parsing state */ + const char *cfg_fname; + int cfg_nline; + char *cfg_value; +}; + +static int get_opt(struct optcfg *oc, const char *s, int *disable_opt); +static char *skip_spaces(char *s); +static void strip_comments(char *s); +static void strip_trailing_spaces(char *s); +static char *parse_keyval(char *line); + + +struct optcfg *optcfg_init(struct optcfg_option *optv) +{ + struct optcfg *oc; + + if(!(oc = calloc(1, sizeof *oc))) { + return 0; + } + oc->optlist = optv; + oc->err_abort = 1; + return oc; +} + +void optcfg_destroy(struct optcfg *oc) +{ + memset(oc, 0, sizeof *oc); + free(oc); +} + +void optcfg_set_opt_callback(struct optcfg *oc, optcfg_opt_callback func, void *cls) +{ + oc->opt_func = func; + oc->opt_cls = cls; +} + +void optcfg_set_arg_callback(struct optcfg *oc, optcfg_arg_callback func, void *cls) +{ + oc->arg_func = func; + oc->arg_cls = cls; +} + +void optcfg_set_error_action(struct optcfg *oc, int act) +{ + if(act == OPTCFG_ERROR_FAIL) { + oc->err_abort = 1; + } else if(act == OPTCFG_ERROR_IGNORE) { + oc->err_abort = 0; + } +} + +int optcfg_parse_args(struct optcfg *oc, int argc, char **argv) +{ + int i; + + oc->argv = argv; + + for(i=1; iargidx = i; + + if(argv[i][0] == '-') { + if(oc->opt_func) { + int o = get_opt(oc, argv[i], &oc->disable_opt); + if(o == -1 || oc->opt_func(oc, o, oc->opt_cls) == -1) { + if(oc->err_abort) { + fprintf(stderr, "unexpected option: %s\n", argv[i]); + return -1; + } + } + } else { + fprintf(stderr, "unexpected option: %s\n", argv[i]); + if(oc->err_abort) { + return -1; + } + } + } else { + if(oc->arg_func) { + if(oc->arg_func(oc, argv[i], oc->arg_cls) == -1) { + if(oc->err_abort) { + fprintf(stderr, "unexpected argument: %s\n", argv[i]); + return -1; + } + } + } else { + fprintf(stderr, "unexpected argument: %s\n", argv[i]); + if(oc->err_abort) { + return -1; + } + } + } + + i = oc->argidx; + } + + oc->argidx = 0; /* done parsing args */ + return 0; +} + +int optcfg_parse_config_file(struct optcfg *oc, const char *fname) +{ + int res; + FILE *fp = fopen(fname, "rb"); + if(!fp) { + return -1; + } + + oc->cfg_fname = fname; + res = optcfg_parse_config_stream(oc, fp); + oc->cfg_fname = 0; + fclose(fp); + return res; +} + +int optcfg_parse_config_stream(struct optcfg *oc, FILE *fp) +{ + char buf[512]; + + oc->cfg_nline = 0; + while(fgets(buf, sizeof buf, fp)) { + ++oc->cfg_nline; + + if(optcfg_parse_config_line(oc, buf) == -1) { + if(oc->err_abort) { + return -1; + } + } + } + return 0; +} + +int optcfg_parse_config_line(struct optcfg *oc, const char *line) +{ + int opt, len; + char *start, *val, *buf; + + len = strlen(line); + buf = alloca(len + 1); + memcpy(buf, line, len + 1); + + start = skip_spaces(buf); + strip_comments(start); + strip_trailing_spaces(start); + if(!*start) { + return 0; + } + + if(!(val = parse_keyval(start))) { + fprintf(stderr, "error parsing %s line %d: invalid syntax\n", oc->cfg_fname ? oc->cfg_fname : "", oc->cfg_nline); + return -1; + } + oc->cfg_value = val; + if((opt = get_opt(oc, start, 0)) == -1) { + fprintf(stderr, "error parsing %s line %d: unknown option: %s\n", oc->cfg_fname ? oc->cfg_fname : "", + oc->cfg_nline, start); + return -1; + } + + if(oc->opt_func) { + if(oc->opt_func(oc, opt, oc->opt_cls) == -1) { + return -1; + } + } + oc->cfg_value = 0; + return 0; +} + +int optcfg_enabled_value(struct optcfg *oc, int *enabledp) +{ + if(oc->argidx) { + *enabledp = ~oc->disable_opt & 1; + } else { + char *val = optcfg_next_value(oc); + if(optcfg_bool_value(val, enabledp) == -1) { + return -1; + } + } + return 0; +} + + +char *optcfg_next_value(struct optcfg *oc) +{ + if(oc->argidx) { /* we're in the middle of parsing arguments, so get the next one */ + return oc->argv[++oc->argidx]; + } + if(oc->cfg_value) { + char *val = oc->cfg_value; + oc->cfg_value = 0; + return val; + } + return 0; +} + +void optcfg_print_options(struct optcfg *oc) +{ + int i; + for(i=0; oc->optlist[i].opt != -1; i++) { + struct optcfg_option *opt = oc->optlist + i; + + if(opt->c) { + printf(" -%c", opt->c); + } else { + printf(" "); + } + if(opt->s) { + printf("%c-%s: ", opt->c ? ',' : ' ', opt->s); + } else { + printf(": "); + } + printf("%s\n", opt->desc ? opt->desc : "undocumented"); + } +} + +#ifdef _MSC_VER +#define strcasecmp stricmp +#endif + +int optcfg_bool_value(char *s, int *valret) +{ + if(strcasecmp(s, "yes") == 0 || strcasecmp(s, "true") == 0 || strcmp(s, "1") == 0) { + *valret = 1; + return 0; + } + if(strcasecmp(s, "no") == 0 || strcasecmp(s, "false") == 0 || strcmp(s, "0") == 0) { + *valret = 0; + return 0; + } + return -1; +} + +int optcfg_int_value(char *str, int *valret) +{ + char *endp; + *valret = strtol(str, &endp, 0); + if(endp == str) { + return -1; + } + return 0; +} + +int optcfg_float_value(char *str, float *valret) +{ + char *endp; + *valret = strtod(str, &endp); + if(endp == str) { + return -1; + } + return 0; +} + + + +static int get_opt(struct optcfg *oc, const char *arg, int *disable_opt) +{ + int i, ndashes = 0; + + while(*arg && *arg == '-') { + ++ndashes; + ++arg; + } + + if(ndashes > 2) { + arg -= ndashes; + ndashes = 0; + } + + if(disable_opt) { + if(ndashes && (strstr(arg, "no-") == arg || strstr(arg, "disable-") == arg)) { + *disable_opt = 1; + arg = strchr(arg, '-') + 1; /* guaranteed to exist at this point */ + } else { + *disable_opt = 0; + } + } + + if(arg[1]) { /* match long options */ + for(i=0; oc->optlist[i].opt != -1; i++) { + if(strcmp(arg, oc->optlist[i].s) == 0) { + return i; + } + } + } else { + for(i=0; oc->optlist[i].opt != -1; i++) { + if(arg[0] == oc->optlist[i].c) { + return i; + } + } + } + return -1; +} + +static char *skip_spaces(char *s) +{ + while(*s && isspace(*s)) ++s; + return s; +} + +static void strip_comments(char *s) +{ + while(*s && *s != '#') ++s; + if(*s == '#') *s = 0; +} + +static void strip_trailing_spaces(char *s) +{ + char *end = s + strlen(s) - 1; + while(end >= s && isspace(*end)) { + *end-- = 0; + } +} + +static char *parse_keyval(char *line) +{ + char *val; + char *eq = strchr(line, '='); + if(!eq) return 0; + + *eq = 0; + strip_trailing_spaces(line); + val = skip_spaces(eq + 1); + strip_trailing_spaces(val); + + if(!*line || !*val) { + return 0; + } + return val; +} diff --git a/src/optcfg.h b/src/optcfg.h new file mode 100644 index 0000000..b6d060a --- /dev/null +++ b/src/optcfg.h @@ -0,0 +1,90 @@ +/* generic unified commandline option and config file parsing library */ +#ifndef LIBOPTCFG_H_ +#define LIBOPTCFG_H_ + +#include + +struct optcfg; + +struct optcfg_option { + char c; /* short (optional): used only for argument parsing */ + const char *s; /* long: used for long options and config files */ + int opt; /* the corresponding option enumeration */ + const char *desc; /* text description for printing usage information */ +}; + +#define OPTCFG_OPTIONS_END {0, 0, -1, 0} + +typedef int (*optcfg_opt_callback)(struct optcfg *oc, int opt, void *cls); +typedef int (*optcfg_arg_callback)(struct optcfg *oc, const char *arg, void *cls); + +#ifdef __cplusplus +extern "C" { +#endif + +/* initialize the optcfg object with a valid option vector terminated by an + * entry with an opt value of -1 (other fields ignored for termination purposes) + * + * Example: + * struct optcfg_option options[] = { + * {'f', "foo", OPT_FOO, "Makes sure the foo is bar"}, + * {'h', "help", OPT_HELP, "Print usage information and exit"}, + * OPTCFG_OPTIONS_END + * }; + * struct optcfg *oc = optcfg_init(options); + */ +struct optcfg *optcfg_init(struct optcfg_option *optv); +void optcfg_destroy(struct optcfg *oc); + +/* The parse_* functions call the option callback for each option. + * + * The option callback can then call optcfg_next_value to retrieve any + * values attached to this option. When optcfg_next_value returns 0, there + * are no more values available. + * The option callback must return 0 for success, and -1 to abort parsing. + */ +void optcfg_set_opt_callback(struct optcfg *oc, optcfg_opt_callback func, void *cls); +/* the argument callback is only called from optcfg_parse_args(), when a non-option + * argument is encountered (an argument not starting with a dash) + */ +void optcfg_set_arg_callback(struct optcfg *oc, optcfg_arg_callback func, void *cls); + +enum { OPTCFG_ERROR_FAIL, OPTCFG_ERROR_IGNORE }; +void optcfg_set_error_action(struct optcfg *oc, int act); + +int optcfg_parse_args(struct optcfg *oc, int argc, char **argv); +int optcfg_parse_config_file(struct optcfg *oc, const char *fname); +int optcfg_parse_config_stream(struct optcfg *oc, FILE *fp); +int optcfg_parse_config_line(struct optcfg *oc, const char *line); +/* TODO custom I/O callback version of config file parsing */ + +/* special value function which returns if the option is enabled or disabled + * For config files it works similar to calling optcfg_next_value, and + * optcfg_bool_value in sequence. + * For argument parsing however, it doesn't consume further arguments. Merely + * the presence of the option makes it enabled, and its presence with a -no- + * or -disable- prefix disables it. + */ +int optcfg_enabled_value(struct optcfg *oc, int *enabledp); + +/* call optcfg_next_value in the option callback to retrieve the next value + * of the current option. returns 0 if there is no next value. + */ +char *optcfg_next_value(struct optcfg *oc); + +/* helper function which can be used to print the available options */ +void optcfg_print_options(struct optcfg *oc); + +/* helper functions to convert value strings to typed values + * returns 0 for success and value is returned through the valret pointer, + * otherwise it returns -1 for type mismatch, and valret contents are undefined + */ +int optcfg_bool_value(char *str, int *valret); /* accepts yes/no, true/false, 1/0 */ +int optcfg_int_value(char *str, int *valret); +int optcfg_float_value(char *str, float *valret); + +#ifdef __cplusplus +} +#endif + +#endif /* LIBOPTCFG_H_ */ diff --git a/src/osd.c b/src/osd.c new file mode 100644 index 0000000..b40424f --- /dev/null +++ b/src/osd.c @@ -0,0 +1,207 @@ +#include +#include +#include +#include +#include +#include "opengl.h" +#include "osd.h" +#include "game.h" + +#define FONTSZ 16 + +static int init(void); + +struct message { + long start_time, show_until; + char *str; + cgm_vec3 color; + struct message *next; +}; +static struct message *msglist; + +struct text { + char *str; + cgm_vec2 pos; + cgm_vec3 color; + struct text *next; +}; +static struct text *txlist; + +static long timeout = 2000; +static long trans_time = 250; + +int ui_font_size = FONTSZ; + +void set_message_timeout(long tm) +{ + timeout = tm; +} + +void osd_printf(const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + show_messagev(timeout, 1, 1, 1, fmt, ap); + va_end(ap); +} + +void show_message(long timeout, float r, float g, float b, const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + show_messagev(timeout, r, g, b, fmt, ap); + va_end(ap); +} + +void show_messagev(long timeout, float r, float g, float b, const char *fmt, va_list ap) +{ + char buf[512]; + struct message *msg; + struct message dummy; + int len; + + init(); + + vsnprintf(buf, sizeof buf, fmt, ap); + + if(!(msg = malloc(sizeof *msg))) { + perror("failed to allocate memory"); + abort(); + } + len = strlen(buf); + if(!(msg->str = malloc(len + 1))) { + perror("failed to allocate memory"); + abort(); + } + memcpy(msg->str, buf, len + 1); + msg->start_time = time_msec; + msg->show_until = time_msec + timeout; + msg->color.x = r; + msg->color.y = g; + msg->color.z = b; + + dummy.next = msglist; + struct message *prev = &dummy; + while(prev->next && prev->next->show_until < msg->show_until) { + prev = prev->next; + } + msg->next = prev->next; + prev->next = msg; + msglist = dummy.next; +} + +void print_text(float x, float y, float r, float g, float b, const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + print_textv(x, y, r, g, b, fmt, ap); + va_end(ap); +} + +void print_textv(float x, float y, float r, float g, float b, const char *fmt, va_list ap) +{ + char buf[512]; + int len; + struct text *tx; + + init(); + + vsnprintf(buf, sizeof buf, fmt, ap); + + if(!(tx = malloc(sizeof *tx))) { + perror("failed to allocate memory"); + abort(); + } + len = strlen(buf); + if(!(tx->str = malloc(len + 1))) { + perror("failed to allocate memory"); + abort(); + } + memcpy(tx->str, buf, len + 1); + tx->color.x = r; + tx->color.y = g; + tx->color.z = b; + tx->pos.x = x; + tx->pos.y = -y; + + tx->next = txlist; + txlist = tx; +} + +void draw_ui() +{ + if(!ui_font) return; + + while(msglist && msglist->show_until <= time_msec) { + struct message *msg = msglist; + msglist = msg->next; + free(msg->str); + free(msg); + } + + dtx_use_font(ui_font, ui_font_size); + + glMatrixMode(GL_PROJECTION); + glPushMatrix(); + glLoadIdentity(); + glOrtho(0, win_width, -win_height, 0, -1, 1); + glMatrixMode(GL_MODELVIEW); + glPushMatrix(); + glLoadIdentity(); + + glPushAttrib(GL_ENABLE_BIT); + glDisable(GL_LIGHTING); + glDisable(GL_DEPTH_TEST); + glEnable(GL_BLEND); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + glUseProgram(0); + + struct message *msg = msglist; + while(msg) { + long t = time_msec - msg->start_time; + long dur = msg->show_until - msg->start_time; + float alpha = cgm_smoothstep(0, trans_time, t) * + (1.0 - cgm_smoothstep(dur - trans_time, dur, t)); + glColor4f(msg->color.x, msg->color.y, msg->color.z, alpha); + glTranslatef(0, -dtx_line_height(), 0); + dtx_string(msg->str); + msg = msg->next; + } + + while(txlist) { + struct text *tx = txlist; + txlist = txlist->next; + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(tx->pos.x, tx->pos.y, 0); + + glColor3f(tx->color.x, tx->color.y, tx->color.z); + dtx_string(tx->str); + + free(tx->str); + free(tx); + } + + glPopAttrib(); + + glMatrixMode(GL_PROJECTION); + glPopMatrix(); + glMatrixMode(GL_MODELVIEW); + glPopMatrix(); +} + +static int init() +{ + static int done_init; + if(done_init) return 0; + + done_init = 1; + + if(!(ui_font = dtx_open_font("data/ui.font", 0))) { + fprintf(stderr, "failed to open font: data/ui.font\n"); + return -1; + } + dtx_prepare_range(ui_font, ui_font_size, 32, 127); + return 0; +} diff --git a/src/osd.h b/src/osd.h new file mode 100644 index 0000000..dc0028b --- /dev/null +++ b/src/osd.h @@ -0,0 +1,21 @@ +#ifndef OSD_H_ +#define OSD_H_ + +#include + +struct dtx_font; + +struct dtx_font *ui_font; +int ui_font_size; + +void set_message_timeout(long timeout); +void osd_printf(const char *fmt, ...); +void show_message(long timeout, float r, float g, float b, const char *fmt, ...); +void show_messagev(long timeout, float r, float g, float b, const char *fmt, va_list ap); + +void print_text(float x, float y, float r, float g, float b, const char *fmt, ...); +void print_textv(float x, float y, float r, float g, float b, const char *fmt, va_list ap); + +void draw_ui(void); + +#endif /* OSD_H_ */ -- 1.7.10.4