This document provides reference information on functions in the Ring Allegro library extension. It includes a list of over 100 functions for initializing Allegro, managing displays, events, files, filesystem entries, fixed point math, colors, bitmaps, and more. The functions described allow working with Allegro displays, events, files, and graphics from within Ring programs.

1. CHAPTER
SEVENTYSEVEN
RINGMURMURHASH FUNCTIONS REFERENCE
” MurmurHash is a non-cryptographic hash function suitable for general hash-based lookup. It was created by
Austin Appleby in 2008 and is currently hosted on Github along with its test suite named ‘SMHasher’. It also
exists in a number of variants,[5] all of which have been released into the public domain. The name comes from
two basic operations, multiply (MU) and rotate (R), used in its inner loop. “
Murmurhash extension is an extension written to implement a full implementation for the MurmurHash library.
Developer: Hassan Ahmed
77.1 MurmurHash1 functions
uint32_t murmurhash1(string key, int seed, [bool return_type]);
uint32_t murmurhash1_aligned(string key, int seed, [bool return_type]);
77.2 MurmurHash2 functions
uint32_t murmurhash2(string key, int seed, [bool return_type]);
uint32_t murmurhash2a(string key, int seed, [bool return_type]);
uint64_t murmurhash64a(string key, int seed, [bool return_type]);
uint64_t murmurhash64b(string key, int seed, [bool return_type]);
uint32_t murmurhash_neutral2(string key, int seed, [bool return_type]);
uint32_t murmurhash_aligned2(string key, int seed, [bool return_type]);
77.3 MurmurHash3 functions
uint32_t murmurhash3_x86_32(string key, int seed, [bool return_type]);
list murmurhash3_x86_128(string key, int seed, [bool return_type]);
list murmurhash3_x64_128(string key, int seed, [bool return_type]);
The third optional parameter is to set the type of the returned value, this parameter accepts a bool value [ true, false ],
true will return a Hex value, while false will return a integer value.
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77.4 Example
load "murmurhashlib.ring"
key = "Ring Language"
see murmurhash3_x86_32(key, 0, 0) + nl // Output: 1894444853
see murmurhash3_x86_32(key, 0, 1) + nl // Output: 70eaef35
77.4. Example 844

3. CHAPTER
SEVENTYEIGHT
RINGALLEGRO FUNCTIONS REFERENCE
• void al_exit(void)
• void al_run_main(void)
• int al_init(void)
• ALLEGRO_CONFIG *al_create_config(void)
• void al_destroy_config(ALLEGRO_CONFIG *config)
• ALLEGRO_CONFIG *al_load_config_file(const char *filename)
• ALLEGRO_CONFIG *al_load_config_file_f(ALLEGRO_FILE *file)
• bool al_save_config_file(const char *filename, const ALLEGRO_CONFIG *config)
• bool al_save_config_file_f(ALLEGRO_FILE *file, const ALLEGRO_CONFIG *config)
• void al_add_config_section(ALLEGRO_CONFIG *config, const char *name)
• void al_add_config_comment(ALLEGRO_CONFIG *config, const char *section, const char *comment)
• const char *al_get_config_value(const ALLEGRO_CONFIG *config,const char *section, const char *key)
• void al_set_config_value(ALLEGRO_CONFIG *config,const char *section, const char *key, const char *value)
• char const *al_get_first_config_section(ALLEGRO_CONFIG const *config,ALLEGRO_CONFIG_SECTION
**iterator)
• char const *al_get_next_config_section(ALLEGRO_CONFIG_SECTION **iterator)
• char const *al_get_first_config_entry(ALLEGRO_CONFIG const *config,char const *section, ALLE-
GRO_CONFIG_ENTRY **iterator)
• char const *al_get_next_config_entry(ALLEGRO_CONFIG_ENTRY **iterator)
• ALLEGRO_CONFIG *al_merge_config(const ALLEGRO_CONFIG *cfg1,const ALLEGRO_CONFIG *cfg2)
• void al_merge_config_into(ALLEGRO_CONFIG *master, const ALLEGRO_CONFIG *add)
• ALLEGRO_DISPLAY *al_create_display(int w, int h)
• void al_destroy_display(ALLEGRO_DISPLAY *display)
• int al_get_new_display_flags(void)
• void al_set_new_display_flags(int flags)
• int al_get_new_display_option(int option, int *importance)
• void al_set_new_display_option(int option, int value, int importance)
• void al_reset_new_display_options(void)
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• void al_get_new_window_position(int *x, int *y)
• void al_set_new_window_position(int x, int y)
• int al_get_new_display_refresh_rate(void)
• void al_set_new_display_refresh_rate(int refresh_rate)
• ALLEGRO_EVENT_SOURCE *al_get_display_event_source(ALLEGRO_DISPLAY *display)
• ALLEGRO_BITMAP *al_get_backbuffer(ALLEGRO_DISPLAY *display)
• void al_flip_display(void)
• void al_update_display_region(int x, int y, int width, int height)
• bool al_wait_for_vsync(void)
• int al_get_display_width(ALLEGRO_DISPLAY *display)
• int al_get_display_height(ALLEGRO_DISPLAY *display)
• bool al_resize_display(ALLEGRO_DISPLAY *display, int width, int height)
• bool al_acknowledge_resize(ALLEGRO_DISPLAY *display)
• void al_get_window_position(ALLEGRO_DISPLAY *display, int *x, int *y)
• void al_set_window_position(ALLEGRO_DISPLAY *display, int x, int y)
• int al_get_display_flags(ALLEGRO_DISPLAY *display)
• bool al_set_display_flag(ALLEGRO_DISPLAY *display, int flag, bool onoff)
• int al_get_display_option(ALLEGRO_DISPLAY *display, int option)
• int al_get_display_format(ALLEGRO_DISPLAY *display)
• int al_get_display_refresh_rate(ALLEGRO_DISPLAY *display)
• void al_set_window_title(ALLEGRO_DISPLAY *display, const char *title)
• void al_set_display_icon(ALLEGRO_DISPLAY *display, ALLEGRO_BITMAP *icon)
• void al_set_display_icons(ALLEGRO_DISPLAY *display,int num_icons, ALLEGRO_BITMAP *icons[])
• bool al_inhibit_screensaver(bool inhibit)
• void al_acknowledge_drawing_halt(ALLEGRO_DISPLAY *display)
• void al_acknowledge_drawing_resume(ALLEGRO_DISPLAY *display)
• int al_get_display_orientation(ALLEGRO_DISPLAY* display)
• void al_set_display_option(ALLEGRO_DISPLAY *display, int option, int value)
• bool al_get_window_constraints(ALLEGRO_DISPLAY *display,int *min_w, int *min_h, int *max_w, int
*max_h)
• bool al_set_window_constraints(ALLEGRO_DISPLAY *display,int min_w, int min_h, int max_w, int max_h)
• ALLEGRO_EVENT_QUEUE *al_create_event_queue(void)
• void al_destroy_event_queue(ALLEGRO_EVENT_QUEUE *queue)
• void al_register_event_source(ALLEGRO_EVENT_QUEUE *queue,ALLEGRO_EVENT_SOURCE *source)
• void al_unregister_event_source(ALLEGRO_EVENT_QUEUE *queue,ALLEGRO_EVENT_SOURCE
*source)
• bool al_is_event_queue_empty(ALLEGRO_EVENT_QUEUE *queue)
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• bool al_get_next_event(ALLEGRO_EVENT_QUEUE *queue, ALLEGRO_EVENT *ret_event)
• bool al_peek_next_event(ALLEGRO_EVENT_QUEUE *queue, ALLEGRO_EVENT *ret_event)
• bool al_drop_next_event(ALLEGRO_EVENT_QUEUE *queue)
• void al_flush_event_queue(ALLEGRO_EVENT_QUEUE *queue)
• void al_wait_for_event(ALLEGRO_EVENT_QUEUE *queue, ALLEGRO_EVENT *ret_event)
• bool al_wait_for_event_timed(ALLEGRO_EVENT_QUEUE *queue,ALLEGRO_EVENT *ret_event, float
secs)
• bool al_wait_for_event_until(ALLEGRO_EVENT_QUEUE *queue,ALLEGRO_EVENT *ret_event, ALLE-
GRO_TIMEOUT *timeout)
• void al_init_user_event_source(ALLEGRO_EVENT_SOURCE *src)
• void al_destroy_user_event_source(ALLEGRO_EVENT_SOURCE *src)
• intptr_t al_get_event_source_data(const ALLEGRO_EVENT_SOURCE *source)
• void al_set_event_source_data(ALLEGRO_EVENT_SOURCE *source, intptr_t data)
• ALLEGRO_FILE *al_fopen(const char *path, const char *mode)
• ALLEGRO_FILE *al_fopen_interface(const ALLEGRO_FILE_INTERFACE *drv,const char *path, const char
*mode)
• ALLEGRO_FILE *al_fopen_slice(ALLEGRO_FILE *fp, size_t initial_size, const char *mode)
• void al_fclose(ALLEGRO_FILE *f)
• size_t al_fread(ALLEGRO_FILE *f, void *ptr, size_t size)
• size_t al_fwrite(ALLEGRO_FILE *f, const void *ptr, size_t size)
• bool al_fflush(ALLEGRO_FILE *f)
• int64_t al_ftell(ALLEGRO_FILE *f)
• bool al_fseek(ALLEGRO_FILE *f, int64_t offset, int whence)
• bool al_feof(ALLEGRO_FILE *f)
• bool al_ferror(ALLEGRO_FILE *f)
• void al_fclearerr(ALLEGRO_FILE *f)
• int al_fungetc(ALLEGRO_FILE *f, int c)
• int64_t al_fsize(ALLEGRO_FILE *f)
• int al_fgetc(ALLEGRO_FILE *f)
• int al_fputc(ALLEGRO_FILE *f, int c)
• int16_t al_fread16le(ALLEGRO_FILE *f)
• int16_t al_fread16be(ALLEGRO_FILE *f)
• size_t al_fwrite16le(ALLEGRO_FILE *f, int16_t w)
• size_t al_fwrite16be(ALLEGRO_FILE *f, int16_t w)
• int32_t al_fread32le(ALLEGRO_FILE *f)
• int32_t al_fread32be(ALLEGRO_FILE *f)
• size_t al_fwrite32le(ALLEGRO_FILE *f, int32_t l)
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• size_t al_fwrite32be(ALLEGRO_FILE *f, int32_t l)
• char *al_fgets(ALLEGRO_FILE *f, char * const buf, size_t max)
• ALLEGRO_USTR *al_fget_ustr(ALLEGRO_FILE *f)
• int al_fputs(ALLEGRO_FILE *f, char const *p)
• ALLEGRO_FILE *al_fopen_fd(int fd, const char *mode)
• ALLEGRO_FILE *al_make_temp_file(const char *template, ALLEGRO_PATH **ret_path)
• void al_set_new_file_interface(const ALLEGRO_FILE_INTERFACE *file_interface
• void al_set_standard_file_interface(void)
• const ALLEGRO_FILE_INTERFACE *al_get_new_file_interface(void)
• ALLEGRO_FILE *al_create_file_handle(const ALLEGRO_FILE_INTERFACE *drv,void *userdata)
• void *al_get_file_userdata(ALLEGRO_FILE *f)
• ALLEGRO_FS_ENTRY *al_create_fs_entry(const char *path)
• void al_destroy_fs_entry(ALLEGRO_FS_ENTRY *fh)
• const char *al_get_fs_entry_name(ALLEGRO_FS_ENTRY *e)
• bool al_update_fs_entry(ALLEGRO_FS_ENTRY *e)
• uint32_t al_get_fs_entry_mode(ALLEGRO_FS_ENTRY *e)
• time_t al_get_fs_entry_atime(ALLEGRO_FS_ENTRY *e)
• time_t al_get_fs_entry_ctime(ALLEGRO_FS_ENTRY *e)
• time_t al_get_fs_entry_mtime(ALLEGRO_FS_ENTRY *e)
• off_t al_get_fs_entry_size(ALLEGRO_FS_ENTRY *e)
• bool al_fs_entry_exists(ALLEGRO_FS_ENTRY *e)
• bool al_remove_fs_entry(ALLEGRO_FS_ENTRY *e)
• bool al_filename_exists(const char *path)
• bool al_remove_filename(const char *path)
• bool al_open_directory(ALLEGRO_FS_ENTRY *e)
• ALLEGRO_FS_ENTRY *al_read_directory(ALLEGRO_FS_ENTRY *e)
• bool al_close_directory(ALLEGRO_FS_ENTRY *e)
• char *al_get_current_directory(void)
• bool al_change_directory(const char *path)
• bool al_make_directory(const char *path)
• ALLEGRO_FILE *al_open_fs_entry(ALLEGRO_FS_ENTRY *e, const char *mode)
• void al_set_fs_interface(const ALLEGRO_FS_INTERFACE *fs_interface)
• void al_set_standard_fs_interface(void)
• const ALLEGRO_FS_INTERFACE *al_get_fs_interface(void)
• al_fixed al_itofix(int x);
• int al_fixtoi(al_fixed x);
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• int al_fixfloor(al_fixed x);
• int al_fixceil(al_fixed x);
• al_fixed al_ftofix(double x);
• double al_fixtof(al_fixed x);
• al_fixed al_fixmul(al_fixed x, al_fixed y);
• al_fixed al_fixdiv(al_fixed x, al_fixed y);
• al_fixed al_fixadd(al_fixed x, al_fixed y);
• al_fixed al_fixsub(al_fixed x, al_fixed y);
• al_fixed al_fixsin(al_fixed x);
• al_fixed al_fixcos(al_fixed x);
• al_fixed al_fixtan(al_fixed x);
• al_fixed al_fixasin(al_fixed x);
• al_fixed al_fixacos(al_fixed x);
• al_fixed al_fixatan(al_fixed x)
• al_fixed al_fixatan2(al_fixed y, al_fixed x)
• al_fixed al_fixsqrt(al_fixed x)
• al_fixed al_fixhypot(al_fixed x, al_fixed y)
• ALLEGRO_DISPLAY_MODE *al_get_display_mode(int index, ALLEGRO_DISPLAY_MODE *mode)
• int al_get_num_display_modes(void)
• ALLEGRO_COLOR al_map_rgb(unsigned char r, unsigned char g, unsigned char b)
• ALLEGRO_COLOR al_map_rgb_f(float r, float g, float b)
• ALLEGRO_COLOR al_map_rgba(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
• ALLEGRO_COLOR al_map_rgba_f(float r, float g, float b, float a)
• void al_unmap_rgb(ALLEGRO_COLOR color,unsigned char *r, unsigned char *g, unsigned char *b)
• void al_unmap_rgb_f(ALLEGRO_COLOR color, float *r, float *g, float *b)
• void al_unmap_rgba(ALLEGRO_COLOR color,unsigned char *r, unsigned char *g, unsigned char *b, unsigned
char *a)
• void al_unmap_rgba_f(ALLEGRO_COLOR color,float *r, float *g, float *b, float *a)
• int al_get_pixel_size(int format)
• int al_get_pixel_format_bits(int format)
• ALLEGRO_LOCKED_REGION *al_lock_bitmap(ALLEGRO_BITMAP *bitmap,int format, int flags)
• ALLEGRO_LOCKED_REGION *al_lock_bitmap_region(ALLEGRO_BITMAP *bitmap,int x, int y, int width,
int height, int format, int flags)
• void al_unlock_bitmap(ALLEGRO_BITMAP *bitmap)
• ALLEGRO_BITMAP *al_create_bitmap(int w, int h)
• ALLEGRO_BITMAP *al_create_sub_bitmap(ALLEGRO_BITMAP *parent,int x, int y, int w, int h)
• ALLEGRO_BITMAP *al_clone_bitmap(ALLEGRO_BITMAP *bitmap)
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• void al_destroy_bitmap(ALLEGRO_BITMAP *bitmap)
• int al_get_new_bitmap_flags(void)
• int al_get_new_bitmap_format(void)
• void al_set_new_bitmap_flags(int flags)
• void al_add_new_bitmap_flag(int flag)
• void al_set_new_bitmap_format(int format)
• int al_get_bitmap_flags(ALLEGRO_BITMAP *bitmap)
• int al_get_bitmap_format(ALLEGRO_BITMAP *bitmap)
• int al_get_bitmap_height(ALLEGRO_BITMAP *bitmap)
• int al_get_bitmap_width(ALLEGRO_BITMAP *bitmap)
• ALLEGRO_COLOR al_get_pixel(ALLEGRO_BITMAP *bitmap, int x, int y)
• bool al_is_bitmap_locked(ALLEGRO_BITMAP *bitmap)
• bool al_is_compatible_bitmap(ALLEGRO_BITMAP *bitmap)
• bool al_is_sub_bitmap(ALLEGRO_BITMAP *bitmap)
• ALLEGRO_BITMAP *al_get_parent_bitmap(ALLEGRO_BITMAP *bitmap)
• void al_clear_to_color(ALLEGRO_COLOR color)
• void al_draw_bitmap(ALLEGRO_BITMAP *bitmap, float dx, float dy, int flags)
• void al_draw_tinted_bitmap(ALLEGRO_BITMAP *bitmap, ALLEGRO_COLOR tint,float dx, float dy, int
flags)
• void al_draw_bitmap_region(ALLEGRO_BITMAP *bitmap,float sx, float sy, float sw, float sh, float dx, float
dy, int flags)
• void al_draw_tinted_bitmap_region(ALLEGRO_BITMAP *bitmap,ALLEGRO_COLOR tint,float sx, float sy,
float sw, float sh, float dx, float dy,int flags)
• void al_draw_pixel(float x, float y, ALLEGRO_COLOR color)
• void al_draw_rotated_bitmap(ALLEGRO_BITMAP *bitmap,float cx, float cy, float dx, float dy, float angle, int
flags)
• void al_draw_tinted_rotated_bitmap(ALLEGRO_BITMAP *bitmap,ALLEGRO_COLOR tint,float cx, float cy,
float dx, float dy, float angle, int flags)
• void al_draw_scaled_rotated_bitmap(ALLEGRO_BITMAP *bitmap,float cx, float cy, float dx, float dy, float
xscale, float yscale,float angle, int flags)
• void al_draw_tinted_scaled_rotated_bitmap(ALLEGRO_BITMAP *bitmap,ALLEGRO_COLOR tint,float cx,
float cy, float dx, float dy, float xscale, float yscale,float angle, int flags)
• void al_draw_tinted_scaled_rotated_bitmap_region(ALLEGRO_BITMAP *bitmap,float sx, float sy, float sw,
float sh,ALLEGRO_COLOR tint,float cx, float cy, float dx, float dy, float xscale, float yscale,float angle, int
flags)
• void al_draw_scaled_bitmap(ALLEGRO_BITMAP *bitmap,float sx, float sy, float sw, float sh,float dx, float dy,
float dw, float dh, int flags)
• void al_draw_tinted_scaled_bitmap(ALLEGRO_BITMAP *bitmap,ALLEGRO_COLOR tint,float sx, float sy,
float sw, float sh,float dx, float dy, float dw, float dh, int flags)
• ALLEGRO_BITMAP *al_get_target_bitmap(void)
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• void al_put_pixel(int x, int y, ALLEGRO_COLOR color)
• void al_put_blended_pixel(int x, int y, ALLEGRO_COLOR color)
• void al_set_target_bitmap(ALLEGRO_BITMAP *bitmap)
• void al_set_target_backbuffer(ALLEGRO_DISPLAY *display)
• ALLEGRO_DISPLAY *al_get_current_display(void)
• void al_get_blender(int *op, int *src, int *dst)
• void al_get_separate_blender(int *op, int *src, int *dst,int *alpha_op, int *alpha_src, int *alpha_dst)
• void al_set_blender(int op, int src, int dst)
• void al_set_separate_blender(int op, int src, int dst,int alpha_op, int alpha_src, int alpha_dst)
• void al_get_clipping_rectangle(int *x, int *y, int *w, int *h)
• void al_set_clipping_rectangle(int x, int y, int width, int height)
• void al_reset_clipping_rectangle(void)
• void al_convert_mask_to_alpha(ALLEGRO_BITMAP *bitmap, ALLEGRO_COLOR mask_color)
• void al_hold_bitmap_drawing(bool hold)
• bool al_is_bitmap_drawing_held(void)
• ALLEGRO_BITMAP *al_load_bitmap_f(ALLEGRO_FILE *fp, const char *ident)
• bool al_save_bitmap(const char *filename, ALLEGRO_BITMAP *bitmap)
• bool al_save_bitmap_f(ALLEGRO_FILE *fp, const char *ident,ALLEGRO_BITMAP *bitmap)
• bool al_install_joystick(void)
• void al_uninstall_joystick(void)
• bool al_is_joystick_installed(void)
• bool al_reconfigure_joysticks(void)
• int al_get_num_joysticks(void)
• ALLEGRO_JOYSTICK * al_get_joystick(int num)
• void al_release_joystick(ALLEGRO_JOYSTICK *joy)
• bool al_get_joystick_active(ALLEGRO_JOYSTICK *joy)
• const char *al_get_joystick_name(ALLEGRO_JOYSTICK *joy)
• const char *al_get_joystick_stick_name(ALLEGRO_JOYSTICK *joy, int stick)
• const char *al_get_joystick_axis_name(ALLEGRO_JOYSTICK *joy, int stick, int axis)
• const char *al_get_joystick_button_name(ALLEGRO_JOYSTICK *joy, int button)
• int al_get_joystick_stick_flags(ALLEGRO_JOYSTICK *joy, int stick)
• int al_get_joystick_num_sticks(ALLEGRO_JOYSTICK *joy)
• int al_get_joystick_num_axes(ALLEGRO_JOYSTICK *joy, int stick)
• int al_get_joystick_num_buttons(ALLEGRO_JOYSTICK *joy)
• void al_get_joystick_state(ALLEGRO_JOYSTICK *joy, ALLEGRO_JOYSTICK_STATE *ret_state)
• ALLEGRO_EVENT_SOURCE *al_get_joystick_event_source(void)
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• bool al_install_keyboard(void)
• bool al_is_keyboard_installed(void)
• void al_uninstall_keyboard(void)
• void al_get_keyboard_state(ALLEGRO_KEYBOARD_STATE *ret_state)
• bool al_key_down(const ALLEGRO_KEYBOARD_STATE *state, int keycode)
• const char *al_keycode_to_name(int keycode)
• bool al_set_keyboard_leds(int leds)
• ALLEGRO_EVENT_SOURCE *al_get_keyboard_event_source(void)
• void *al_malloc_with_context(size_t n,int line, const char *file, const char *func)
• void al_free_with_context(void *ptr, int line, const char *file, const char *func)
• void *al_realloc_with_context(void *ptr, size_t n,int line, const char *file, const char *func)
• void *al_calloc_with_context(size_t count, size_t n,int line, const char *file, const char *func)
• void al_set_memory_interface(ALLEGRO_MEMORY_INTERFACE *memory_interface)
• int al_get_new_display_adapter(void)
• void al_set_new_display_adapter(int adapter)
• bool al_get_monitor_info(int adapter, ALLEGRO_MONITOR_INFO *info)
• int al_get_num_video_adapters(void)
• bool al_install_mouse(void)
• bool al_is_mouse_installed(void)
• void al_uninstall_mouse(void)
• unsigned int al_get_mouse_num_axes(void)
• unsigned int al_get_mouse_num_buttons(void)
• void al_get_mouse_state(ALLEGRO_MOUSE_STATE *ret_state)
• int al_get_mouse_state_axis(const ALLEGRO_MOUSE_STATE *state, int axis)
• bool al_mouse_button_down(const ALLEGRO_MOUSE_STATE *state, int button)
• bool al_set_mouse_xy(ALLEGRO_DISPLAY *display, int x, int y)
• bool al_set_mouse_z(int z)
• bool al_set_mouse_w(int w)
• bool al_set_mouse_axis(int which, int value)
• ALLEGRO_EVENT_SOURCE *al_get_mouse_event_source(void)
• ALLEGRO_MOUSE_CURSOR *al_create_mouse_cursor(ALLEGRO_BITMAP *bmp,int x_focus, int
y_focus)
• void al_destroy_mouse_cursor(ALLEGRO_MOUSE_CURSOR *cursor)
• bool al_set_mouse_cursor(ALLEGRO_DISPLAY *display, ALLEGRO_MOUSE_CURSOR *cursor)
• bool al_set_system_mouse_cursor(ALLEGRO_DISPLAY *display,ALLEGRO_SYSTEM_MOUSE_CURSOR
cursor_id)
• bool al_get_mouse_cursor_position(int *ret_x, int *ret_y)
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