614 lines
19 KiB
C
614 lines
19 KiB
C
/* $Id: key.c,v 1.1.1.1 2006/03/17 19:53:40 zicodxx Exp $ */
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/*
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*
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* SDL keyboard input support
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*
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <SDL/SDL.h>
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#include "event.h"
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#include "error.h"
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#include "key.h"
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#include "timer.h"
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static unsigned char Installed = 0;
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//-------- Variable accessed by outside functions ---------
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unsigned char keyd_buffer_type; // 0=No buffer, 1=buffer ASCII, 2=buffer scans
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unsigned char keyd_repeat;
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unsigned char keyd_editor_mode;
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volatile unsigned char keyd_last_pressed;
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volatile unsigned char keyd_last_released;
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volatile unsigned char keyd_pressed[256];
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volatile int keyd_time_when_last_pressed;
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unsigned char unicode_frame_buffer[KEY_BUFFER_SIZE] = { '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0' };
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typedef struct Key_info {
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ubyte state; // state of key 1 == down, 0 == up
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ubyte last_state; // previous state of key
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int counter; // incremented each time key is down in handler
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fix timewentdown; // simple counter incremented each time in interrupt and key is down
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fix timehelddown; // counter to tell how long key is down -- gets reset to 0 by key routines
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ubyte downcount; // number of key counts key was down
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ubyte upcount; // number of times key was released
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} Key_info;
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typedef struct keyboard {
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unsigned short keybuffer[KEY_BUFFER_SIZE];
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Key_info keys[256];
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fix time_pressed[KEY_BUFFER_SIZE];
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unsigned int keyhead, keytail;
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} keyboard;
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static keyboard key_data;
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typedef struct key_props {
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char *key_text;
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unsigned char ascii_value;
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SDLKey sym;
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} key_props;
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key_props key_properties[256] = {
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{ "", 255, -1 }, // 0
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{ "ESC", 255, SDLK_ESCAPE },
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{ "1", '1', SDLK_1 },
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{ "2", '2', SDLK_2 },
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{ "3", '3', SDLK_3 },
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{ "4", '4', SDLK_4 },
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{ "5", '5', SDLK_5 },
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{ "6", '6', SDLK_6 },
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{ "7", '7', SDLK_7 },
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{ "8", '8', SDLK_8 },
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{ "9", '9', SDLK_9 }, // 10
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{ "0", '0', SDLK_0 },
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{ "-", '-', SDLK_MINUS },
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{ "=", '=', SDLK_EQUALS },
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{ "BSPC", 255, SDLK_BACKSPACE },
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{ "TAB", 255, SDLK_TAB },
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{ "Q", 'q', SDLK_q },
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{ "W", 'w', SDLK_w },
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{ "E", 'e', SDLK_e },
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{ "R", 'r', SDLK_r },
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{ "T", 't', SDLK_t }, // 20
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{ "Y", 'y', SDLK_y },
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{ "U", 'u', SDLK_u },
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{ "I", 'i', SDLK_i },
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{ "O", 'o', SDLK_o },
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{ "P", 'p', SDLK_p },
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{ "[", '[', SDLK_LEFTBRACKET },
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{ "]", ']', SDLK_RIGHTBRACKET },
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{ "ENTER", 255, SDLK_RETURN },
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{ "LCTRL", 255, SDLK_LCTRL },
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{ "A", 'a', SDLK_a }, // 30
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{ "S", 's', SDLK_s },
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{ "D", 'd', SDLK_d },
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{ "F", 'f', SDLK_f },
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{ "G", 'g', SDLK_g },
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{ "H", 'h', SDLK_h },
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{ "J", 'j', SDLK_j },
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{ "K", 'k', SDLK_k },
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{ "L", 'l', SDLK_l },
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{ ";", ';', SDLK_SEMICOLON },
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{ "'", '\'', SDLK_QUOTE }, // 40
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{ "`", '`', SDLK_BACKQUOTE },
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{ "LSHFT", 255, SDLK_LSHIFT },
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{ "\\", '\\', SDLK_BACKSLASH },
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{ "Z", 'z', SDLK_z },
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{ "X", 'x', SDLK_x },
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{ "C", 'c', SDLK_c },
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{ "V", 'v', SDLK_v },
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{ "B", 'b', SDLK_b },
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{ "N", 'n', SDLK_n },
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{ "M", 'm', SDLK_m }, // 50
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{ ",", ',', SDLK_COMMA },
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{ ".", '.', SDLK_PERIOD },
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{ "/", '/', SDLK_SLASH },
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{ "RSHFT", 255, SDLK_RSHIFT },
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{ "PAD*", '*', SDLK_KP_MULTIPLY },
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{ "LALT", 255, SDLK_LALT },
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{ "SPC", ' ', SDLK_SPACE },
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{ "CPSLK", 255, SDLK_CAPSLOCK },
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{ "F1", 255, SDLK_F1 },
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{ "F2", 255, SDLK_F2 }, // 60
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{ "F3", 255, SDLK_F3 },
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{ "F4", 255, SDLK_F4 },
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{ "F5", 255, SDLK_F5 },
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{ "F6", 255, SDLK_F6 },
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{ "F7", 255, SDLK_F7 },
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{ "F8", 255, SDLK_F8 },
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{ "F9", 255, SDLK_F9 },
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{ "F10", 255, SDLK_F10 },
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{ "NMLCK", 255, SDLK_NUMLOCK },
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{ "SCLK", 255, SDLK_SCROLLOCK }, // 70
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{ "PAD7", 255, SDLK_KP7 },
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{ "PAD8", 255, SDLK_KP8 },
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{ "PAD9", 255, SDLK_KP9 },
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{ "PAD-", 255, SDLK_KP_MINUS },
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{ "PAD4", 255, SDLK_KP4 },
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{ "PAD5", 255, SDLK_KP5 },
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{ "PAD6", 255, SDLK_KP6 },
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{ "PAD+", 255, SDLK_KP_PLUS },
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{ "PAD1", 255, SDLK_KP1 },
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{ "PAD2", 255, SDLK_KP2 }, // 80
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{ "PAD3", 255, SDLK_KP3 },
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{ "PAD0", 255, SDLK_KP0 },
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{ "PAD.", 255, SDLK_KP_PERIOD },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "F11", 255, SDLK_F11 },
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{ "F12", 255, SDLK_F12 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 90
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "PAUSE", 255, SDLK_PAUSE },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 100
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 110
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 120
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 130
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 140
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 150
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "PAD", 255, SDLK_KP_ENTER },
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{ "RCTRL", 255, SDLK_RCTRL },
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{ "LCMD", 255, SDLK_LMETA },
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{ "RCMD", 255, SDLK_RMETA },
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{ "", 255, -1 }, // 160
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 170
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 180
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{ "PAD/", 255, SDLK_KP_DIVIDE },
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{ "", 255, -1 },
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{ "PRSCR", 255, SDLK_PRINT },
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{ "RALT", 255, SDLK_RALT },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 190
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "HOME", 255, SDLK_HOME },
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{ "UP", 255, SDLK_UP }, // 200
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{ "PGUP", 255, SDLK_PAGEUP },
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{ "", 255, -1 },
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{ "LEFT", 255, SDLK_LEFT },
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{ "", 255, -1 },
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{ "RIGHT", 255, SDLK_RIGHT },
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{ "", 255, -1 },
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{ "END", 255, SDLK_END },
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{ "DOWN", 255, SDLK_DOWN },
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{ "PGDN", 255, SDLK_PAGEDOWN },
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{ "INS", 255, SDLK_INSERT }, // 210
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{ "DEL", 255, SDLK_DELETE },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 220
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 230
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 240
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 250
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 },
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{ "", 255, -1 }, // 255
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};
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char *key_text[256];
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unsigned char key_ascii()
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{
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static unsigned char unibuffer[KEY_BUFFER_SIZE] = { '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0' };
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int i=0, offset=0, count=0;
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offset=strlen((const char*)unibuffer);
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// move temporal chars from unicode_frame_buffer to empty space behind last unibuffer char (if any)
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for (i=offset; i < KEY_BUFFER_SIZE; i++)
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if (unicode_frame_buffer[count] != '\0')
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{
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unibuffer[i]=unicode_frame_buffer[count];
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unicode_frame_buffer[count]='\0';
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count++;
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}
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// unibuffer is not empty. store first char, remove it, shift all chars one step left and then print our char
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if (unibuffer[0] != '\0')
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{
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unsigned char retval = unibuffer[0];
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unsigned char unibuffer_shift[KEY_BUFFER_SIZE];
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memset(unibuffer_shift,'\0',sizeof(unsigned char)*KEY_BUFFER_SIZE);
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memcpy(unibuffer_shift,unibuffer+1,sizeof(unsigned char)*(KEY_BUFFER_SIZE-1));
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memcpy(unibuffer,unibuffer_shift,sizeof(unsigned char)*KEY_BUFFER_SIZE);
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return retval;
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}
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else
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return 255;
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}
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void key_handler(SDL_KeyboardEvent *event, int counter)
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{
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ubyte state;
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int i, keycode, event_keysym=-1, key_state;
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Key_info *key;
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unsigned char temp;
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// Read SDLK symbol and state
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event_keysym = event->keysym.sym;
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key_state = (event->state == SDL_PRESSED);
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// fill the unicode frame-related unicode buffer
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if (key_state && event->keysym.unicode > 31 && event->keysym.unicode < 255)
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for (i = 0; i < KEY_BUFFER_SIZE; i++)
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if (unicode_frame_buffer[i] == '\0')
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{
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unicode_frame_buffer[i] = event->keysym.unicode;
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break;
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}
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//=====================================================
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for (i = 255; i >= 0; i--) {
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keycode = i;
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key = &(key_data.keys[keycode]);
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if (key_properties[i].sym == event_keysym)
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state = key_state;
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else
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state = key->last_state;
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if ( key->last_state == state ) {
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if (state) {
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key->counter++;
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keyd_last_pressed = keycode;
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keyd_time_when_last_pressed = timer_get_fixed_seconds();
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}
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} else {
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if (state) {
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keyd_last_pressed = keycode;
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keyd_pressed[keycode] = 1;
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key->downcount += state;
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key->state = 1;
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key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
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key->counter++;
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} else {
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keyd_pressed[keycode] = 0;
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keyd_last_released = keycode;
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key->upcount += key->state;
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key->state = 0;
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key->counter = 0;
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key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
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}
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}
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if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
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if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
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keycode |= KEY_SHIFTED;
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if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
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keycode |= KEY_ALTED;
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if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
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keycode |= KEY_CTRLED;
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if ( keyd_pressed[KEY_DELETE] )
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keycode |= KEY_DEBUGGED;
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if ( keyd_pressed[KEY_LMETA] || keyd_pressed[KEY_RMETA])
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keycode |= KEY_METAED;
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temp = key_data.keytail+1;
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if ( temp >= KEY_BUFFER_SIZE ) temp=0;
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if (temp!=key_data.keyhead) {
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key_data.keybuffer[key_data.keytail] = keycode;
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key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
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key_data.keytail = temp;
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}
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}
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key->last_state = state;
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}
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}
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void key_close()
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{
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Installed = 0;
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}
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void key_init()
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{
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int i;
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if (Installed) return;
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Installed=1;
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SDL_EnableUNICODE(1);
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keyd_time_when_last_pressed = timer_get_fixed_seconds();
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keyd_buffer_type = 1;
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keyd_repeat = 1;
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for(i=0; i<256; i++)
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key_text[i] = key_properties[i].key_text;
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// Clear the keyboard array
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key_flush();
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}
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void key_flush()
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{
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int i;
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fix curtime;
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if (!Installed)
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key_init();
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key_data.keyhead = key_data.keytail = 0;
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//Clear the keyboard buffer
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for (i=0; i<KEY_BUFFER_SIZE; i++ ) {
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key_data.keybuffer[i] = 0;
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key_data.time_pressed[i] = 0;
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unicode_frame_buffer[i] = '\0';
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}
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//use gettimeofday here:
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curtime = timer_get_fixed_seconds();
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for (i=0; i<256; i++ ) {
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keyd_pressed[i] = 0;
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key_data.keys[i].state = 1;
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key_data.keys[i].last_state = 0;
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key_data.keys[i].timewentdown = curtime;
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key_data.keys[i].downcount=0;
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key_data.keys[i].upcount=0;
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key_data.keys[i].timehelddown = 0;
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key_data.keys[i].counter = 0;
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}
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}
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int add_one(int n)
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{
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n++;
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if ( n >= KEY_BUFFER_SIZE )
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n=0;
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return n;
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}
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int key_checkch()
|
|
{
|
|
int is_one_waiting = 0;
|
|
event_poll();
|
|
if (key_data.keytail!=key_data.keyhead)
|
|
is_one_waiting = 1;
|
|
return is_one_waiting;
|
|
}
|
|
|
|
int key_inkey()
|
|
{
|
|
int key = 0;
|
|
if (!Installed)
|
|
key_init();
|
|
event_poll();
|
|
if (key_data.keytail!=key_data.keyhead) {
|
|
key = key_data.keybuffer[key_data.keyhead];
|
|
key_data.keyhead = add_one(key_data.keyhead);
|
|
}
|
|
|
|
return key;
|
|
}
|
|
|
|
int key_inkey_time(fix * time)
|
|
{
|
|
int key = 0;
|
|
|
|
if (!Installed)
|
|
key_init();
|
|
event_poll();
|
|
if (key_data.keytail!=key_data.keyhead) {
|
|
key = key_data.keybuffer[key_data.keyhead];
|
|
*time = key_data.time_pressed[key_data.keyhead];
|
|
key_data.keyhead = add_one(key_data.keyhead);
|
|
}
|
|
return key;
|
|
}
|
|
|
|
int key_peekkey()
|
|
{
|
|
int key = 0;
|
|
event_poll();
|
|
if (key_data.keytail!=key_data.keyhead)
|
|
key = key_data.keybuffer[key_data.keyhead];
|
|
|
|
return key;
|
|
}
|
|
|
|
int key_getch()
|
|
{
|
|
int dummy=0;
|
|
|
|
if (!Installed)
|
|
return 0;
|
|
// return getch();
|
|
|
|
while (!key_checkch())
|
|
dummy++;
|
|
return key_inkey();
|
|
}
|
|
|
|
unsigned int key_get_shift_status()
|
|
{
|
|
unsigned int shift_status = 0;
|
|
|
|
if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
|
|
shift_status |= KEY_SHIFTED;
|
|
|
|
if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
|
|
shift_status |= KEY_ALTED;
|
|
|
|
if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
|
|
shift_status |= KEY_CTRLED;
|
|
|
|
#ifndef NDEBUG
|
|
if (keyd_pressed[KEY_DELETE])
|
|
shift_status |=KEY_DEBUGGED;
|
|
#endif
|
|
|
|
return shift_status;
|
|
}
|
|
|
|
// Returns the number of seconds this key has been down since last call.
|
|
fix key_down_time(int scancode)
|
|
{
|
|
fix time_down, time;
|
|
|
|
event_poll();
|
|
if ((scancode<0)|| (scancode>255)) return 0;
|
|
|
|
if (!keyd_pressed[scancode]) {
|
|
time_down = key_data.keys[scancode].timehelddown;
|
|
key_data.keys[scancode].timehelddown = 0;
|
|
} else {
|
|
time = timer_get_fixed_seconds();
|
|
time_down = time - key_data.keys[scancode].timewentdown;
|
|
key_data.keys[scancode].timewentdown = time;
|
|
}
|
|
|
|
return time_down;
|
|
}
|
|
|
|
unsigned int key_down_count(int scancode)
|
|
{
|
|
int n;
|
|
event_poll();
|
|
if ((scancode<0)|| (scancode>255)) return 0;
|
|
|
|
n = key_data.keys[scancode].downcount;
|
|
key_data.keys[scancode].downcount = 0;
|
|
|
|
return n;
|
|
}
|
|
|
|
unsigned int key_up_count(int scancode)
|
|
{
|
|
int n;
|
|
event_poll();
|
|
if ((scancode<0)|| (scancode>255)) return 0;
|
|
|
|
n = key_data.keys[scancode].upcount;
|
|
key_data.keys[scancode].upcount = 0;
|
|
|
|
return n;
|
|
}
|