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readkey(3alleg4) [osx man page]

readkey(3alleg4)                                                  Allegro manual                                                  readkey(3alleg4)

readkey - Returns the next character from the keyboard buffer. Allegro game programming library. SYNOPSIS
#include <allegro.h> int readkey(); DESCRIPTION
Returns the next character from the keyboard buffer, in ASCII format. If the buffer is empty, it waits until a key is pressed. You can see if there are queued keypresses with keypressed(). The low byte of the return value contains the ASCII code of the key, and the high byte the scancode. The scancode remains the same whatever the state of the shift, ctrl and alt keys, while the ASCII code is affected by shift and ctrl in the normal way (shift changes case, ctrl+letter gives the position of that letter in the alphabet, eg. ctrl+A = 1, ctrl+B = 2, etc). Pressing alt+key returns only the scan- code, with a zero ASCII code in the low byte. For example: int val; ... val = readkey(); if ((val & 0xff) == 'd') /* by ASCII code */ allegro_message("You pressed 'd' "); if ((val >> 8) == KEY_SPACE) /* by scancode */ allegro_message("You pressed Space "); if ((val & 0xff) == 3) /* ctrl+letter */ allegro_message("You pressed Control+C "); if (val == (KEY_X << 8)) /* alt+letter */ allegro_message("You pressed Alt+X "); This function cannot return character values greater than 255. If you need to read Unicode input, use ureadkey() instead. SEE ALSO
install_keyboard(3alleg4), ureadkey(3alleg4), keypressed(3alleg4), clear_keybuf(3alleg4), simulate_keypress(3alleg4) Allegro version 4.4.2 readkey(3alleg4)

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exzbuf(3alleg4) 						  Allegro manual						   exzbuf(3alleg4)

exzbuf - Z-buffered polygons demo. Allegro game programming library. SYNOPSIS
#include <allegro.h> Example exzbuf DESCRIPTION
This program demonstrates how to use Z-buffered polygons and floating point 3D math routines. It also provides a simple way to compute fps (frames per second) using a timer. After selecting a screen resolution through the standard GUI dialog, the example shows two 3D cubes rotating and intersecting each other. Rather than having full polygons incorrectly overlap other polygons due to per-polygon sorting, each pixel is drawn at the correct depth. SEE ALSO
BITMAP(3alleg4), END_OF_FUNCTION(3alleg4), END_OF_MAIN(3alleg4), LOCK_FUNCTION(3alleg4), LOCK_VARIABLE(3alleg4), MATRIX_f(3alleg4), PAL- ETTE(3alleg4), POLYTYPE_GCOL(3alleg4), SCREEN_H(3alleg4), SCREEN_W(3alleg4), V3D_f(3alleg4), ZBUFFER(3alleg4), allegro_error(3alleg4), allegro_exit(3alleg4), allegro_init(3alleg4), allegro_message(3alleg4), apply_matrix_f(3alleg4), bitmap_color_depth(3alleg4), blit(3alleg4), clear_bitmap(3alleg4), clear_zbuffer(3alleg4), create_bitmap(3alleg4), create_zbuffer(3alleg4), desktop_palette(3alleg4), destroy_bitmap(3alleg4), destroy_zbuffer(3alleg4), font(3alleg4), get_transformation_matrix_f(3alleg4), gfx_mode_select_ex(3alleg4), install_int(3alleg4), install_keyboard(3alleg4), install_mouse(3alleg4), install_timer(3alleg4), keypressed(3alleg4), pal- ette_color(3alleg4), persp_project_f(3alleg4), polygon_z_normal_f(3alleg4), quad3d_f(3alleg4), readkey(3alleg4), screen(3alleg4), set_color_depth(3alleg4), set_gfx_mode(3alleg4), set_palette(3alleg4), set_palette_range(3alleg4), set_projection_viewport(3alleg4), set_zbuffer(3alleg4), textprintf_ex(3alleg4), vsync(3alleg4) Allegro version 4.4.2 exzbuf(3alleg4)
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