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mtarget.c
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mtarget.c
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/* (C) 2014--2015 Daniele Zanotelli
* dazano@gmail.com
*
* Re-implementing my old game `target.bas' in C (previously written in
* QuickBasic) for learning purposes (C, struct, pointers and ncurses lib).
*
* References:
* - ncurses: http://invisible-island.net/ncurses/ncurses-intro.html
* - ncurses: http://tldp.org/HOWTO/NCURSES-Programming-HOWTO/
*
*
* This software is licensed under GPL v3.
*
* This very program is dedicated to my cousin Federico, who was the only
* one to use and appreciate the old target game.
*/
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <ncurses.h> /* may also autoinclude tremios.h or tremio.h or sftty.h */
#define mtLINES 24 /* workspace defined as 24 lines x 80 cols*/
#define mtCOLS 80
#define LEFT 1
#define CENTER 2
#define RIGHT 3
#define MAX_PN_LEN 13 /* max name length for player */
#define TIME_VALUE 30
#define EXIT_GAME 0
#define NEW_GAME 1
#define GAME_RUNNING 0
#define GAME_WIN 1
#define GAME_LOSE 2
#define NO_COLOR 0
#define RED_ON_BLACK 1
#define GREEN_ON_BLACK 2
#define YELLOW_ON_BLACK 3
#define BLUE_ON_BLACK 4
#define MAGENTA_ON_BLACK 5
#define CYAN_ON_BLACK 6
#define WHITE_ON_BLACK 7
#define BLACK_ON_RED 8
#define BLACK_ON_GREEN 9
#define BLACK_ON_YELLOW 10
#define BLACK_ON_BLUE 11
#define BLACK_ON_MAGENTA 12
#define BLACK_ON_CYAN 13
#define BLACK_ON_WHITE 14
#define AMMO_AVAILABLE(level) 30 - (level-1)*10
#define DIR_UP 0
#define DIR_RIGHT 1
#define DIR_DOWN 2
#define DIR_LEFT 3
/* ---------------------------------------------------------------------------
* data structures definition
*/
typedef struct
{
WINDOW* win;
int y, x;
int height, width;
int border;
} mtWIN;
typedef struct
{
int x;
int y;
} point;
/* FIXME: `#define __attribute__((__packed__)) ' for windows mb? */
/*http://stackoverflow.com/questions/232785/use-of-pragma-in-c */
struct shot_item//__attribute__((__packed__))
{
struct shot_item* prev;
struct shot_item* next;
point coords;
unsigned int distance;
};
typedef struct
{
char player_name[MAX_PN_LEN];
int level;
bool timer;
point* target;
int ammo_tot;
int ammo_left;
} game_conf;
/* ---------------------------------------------------------------------------
* global vars
*/
bool term_colors;
mtWIN* field;
mtWIN* panel;
mtWIN* lamp;
mtWIN* msg;
/* ----------------------------------------------------------------------------
* functions' prototypes
*/
void ask_options(game_conf* configuration);
bool config_colors(void);
void clear_ammo_info();
void clear_msg();
mtWIN* create_win(int height, int width, int starty, int startx, int border);
void destroy_win(mtWIN* window);
void display_shots(struct shot_item* last_shot);
unsigned int distance(point a, point b);
void draw_ascii_circle(mtWIN* win, int tly, int tlx, int color, char* text);
void draw_border(mtWIN* window, int color_pair, bool refresh_flag);
void draw_gunsight(mtWIN* window, point gunsight, int color);
void draw_shot(mtWIN* window, point shot, int color);
void draw_target(mtWIN* window, point target);
void enter_ncurses(void);
void exit_ncurses(void);
void free_shot_list(struct shot_item* last_shot_item);
point* get_new_target(mtWIN* window);
point* get_random_point(int max_y, int max_x);
void greet(void);
void init_panel(game_conf* configuration);
void init_target_area();
void init_traffic_lamp();
void light_the_lamp(unsigned int distance);
int main_cycle(game_conf* configuration);
void move_gunsight(mtWIN* window, point* gunsight, int direction);
void mv_info_gunsight(point* gunsight, int dir);
void mv_mtw_addstr_center(mtWIN* window, int y, char* string);
struct shot_item* push_shot(struct shot_item* last, point new_shot,
unsigned int new_distance);
void set_msg(char* message, int color);
void show_win(mtWIN* window);
void toggle_lamp_lights(int red, int yellow, int green);
void upd_ammo_info(game_conf conf);
void upd_time_info(int time_value);
/* -------------------------------------------------------------------------- */
int main()
{
/* standard declarations */
int todo;
game_conf* conf = malloc(sizeof(game_conf));
conf->target = malloc(sizeof(point));
/* start ncurses env -- before this also ncurses structures
as `WINDOW' (random sample...!) will not be ready
*/
enter_ncurses();
refresh();
field = create_win(15, 65, 0, 0, CYAN_ON_BLACK);
panel = create_win(6, 80, 16, 0, MAGENTA_ON_BLACK);
lamp = create_win(16, 15, 0, 65, WHITE_ON_BLACK);
msg = create_win(1, 65, 15, 0, NO_COLOR);
/* first, the introducing window */
greet();
/* init the available commands in stdscr, bottom line */
if (term_colors) attron(A_BOLD);
mvaddstr(22, 10, "[P]");
mvaddstr(22, 20, "[N]");
mvaddstr(22, 38, "[U]");
mvaddstr(22, 64, "[S]");
if (term_colors) attroff(A_BOLD);
mvaddstr(22, 13, "ausa");
mvaddstr(22, 23, "uova partita");
mvaddstr(22, 41, "scita");
mvaddstr(22, 67, "para!");
/* go! */
while (TRUE) {
/* ask to the user the game configuration parameters */
ask_options(conf);
/* init */
init_panel(conf);
init_traffic_lamp();
init_target_area();
/* print available commands in the bottom line */
refresh();
todo = main_cycle(conf);
if (todo == EXIT_GAME) {
break;
}
else if (todo == NEW_GAME) {
continue;
}
}
/* free memory */
free(conf->target);
free(conf);
destroy_win(field);
destroy_win(panel);
destroy_win(lamp);
destroy_win(msg);
/* exit */
exit_ncurses();
return 0;
}
void enter_ncurses()
{
initscr();
raw();
nonl();
cbreak();
noecho();
keypad(stdscr, TRUE);
curs_set(0); /* available values: 0, 1, 2. 0 is no cursor */
term_colors = config_colors();
}
bool config_colors()
{
if (has_colors()) {
start_color();
/* color on black */
init_pair(RED_ON_BLACK, COLOR_RED, COLOR_BLACK);
init_pair(GREEN_ON_BLACK, COLOR_GREEN, COLOR_BLACK);
init_pair(YELLOW_ON_BLACK, COLOR_YELLOW, COLOR_BLACK);
init_pair(BLUE_ON_BLACK, COLOR_BLUE, COLOR_BLACK);
init_pair(MAGENTA_ON_BLACK, COLOR_MAGENTA, COLOR_BLACK);
init_pair(CYAN_ON_BLACK, COLOR_CYAN, COLOR_BLACK);
init_pair(WHITE_ON_BLACK, COLOR_WHITE, COLOR_BLACK);
/* color on white ~ enligh effect */
init_pair(BLACK_ON_RED, COLOR_BLACK, COLOR_RED);
init_pair(BLACK_ON_GREEN, COLOR_BLACK, COLOR_GREEN);
init_pair(BLACK_ON_YELLOW, COLOR_BLACK, COLOR_YELLOW);
init_pair(BLACK_ON_BLUE, COLOR_BLACK, COLOR_BLUE);
init_pair(BLACK_ON_MAGENTA, COLOR_BLACK, COLOR_MAGENTA);
init_pair(BLACK_ON_CYAN, COLOR_BLACK, COLOR_CYAN);
init_pair(BLACK_ON_WHITE, COLOR_BLACK, COLOR_WHITE);
return TRUE;
}
else {
return FALSE;
}
}
void exit_ncurses()
{
endwin();
}
mtWIN* create_win(int height, int width, int starty, int startx, int border)
{
/* init a mtWIN data structure, with a ncurses WINDOW and draw a border
* if *border* flag is set to a NCURSES COLOR PAIR value
*/
mtWIN* magic_target_window = malloc(sizeof(mtWIN));
magic_target_window->win = newwin(height, width, starty, startx);
magic_target_window->border = border;
magic_target_window->height = height;
magic_target_window->width = width;
magic_target_window->y = starty;
magic_target_window->x = startx;
draw_border(magic_target_window, border, FALSE);
/* activate keypad */
keypad(magic_target_window->win, TRUE);
return magic_target_window;
}
void draw_border(mtWIN* win, int color_pair, bool refresh)
{
if (color_pair) {
if (term_colors) {
wattron(win->win, COLOR_PAIR(color_pair));
}
box(win->win, 0, 0);
if (term_colors) {
wattroff(win->win, COLOR_PAIR(color_pair));
}
}
else { /* hide border */
COLOR_PAIR(WHITE_ON_BLACK);
wborder(win->win, ' ', ' ', ' ',' ',' ',' ',' ',' ');
}
win->border = color_pair;
if (refresh)
wrefresh(win->win);
}
void show_win(mtWIN* win)
{
/* Refresh and show the window even if there were no modifications
*/
touchwin(win->win); /* let ncurses think that every char is new */
wrefresh(win->win); /* in order to refresh them on the screen */
}
void destroy_win(mtWIN* win)
{
wclear(win->win);
wrefresh(win->win);
delwin(win->win);
free(win);
}
void mv_mtw_addstr_center(mtWIN* win, int y, char* string)
{
int x_pos = floor(win->width / 2) - ceil(strlen(string) / 2);
if (x_pos < 0) {
if (win->border) {
string[win->width-2] = '\0';
x_pos = 1;
}
else {
string[win->width] = '\0';
x_pos = 0;
}
}
mvwaddstr(win->win, y, x_pos, string);
}
void greet()
{
/* Build a window with the program title, and some notes to introduce
* Magic Target to the user.
*/
mtWIN* greet_win = create_win(mtLINES, mtCOLS, 0, 0, RED_ON_BLACK);
char* title[] = {
"C Magic Target - v2.0",
"(C) 2014 Daniele Zanotelli - dazano@gmail.com",
};
char* descr[] = {
"Questo e` un remake di QuickBasic Magic Target, scritto",
"in adolescenza. Questa versione, reimplementata in C,",
"e` dedicata a mio cugino Federico, unico utente della prima",
"versione il quale ha apprezzato cosi` tanto la scritta",
"``!! BINATO !!'' che appariva quando il bersagio veniva",
"centrato.",
};
char* sentence;
int i = 0;
int selected_color;
size_t title_len = sizeof(title)/sizeof(title[0]);
size_t descr_len = sizeof(descr)/sizeof(descr[0]);
for (i=0; i<title_len; i++) {
if (term_colors) {
switch (i) {
case 0:
selected_color = BLUE_ON_BLACK;
break;
case 1:
selected_color = CYAN_ON_BLACK;
break;
default:
selected_color = WHITE_ON_BLACK;
}
wattron(greet_win->win, COLOR_PAIR(selected_color));
}
mv_mtw_addstr_center(greet_win, 5+i+i%2, title[i]);
if (term_colors)
wattroff(greet_win->win, COLOR_PAIR(selected_color));
}
for (i=0; i<descr_len; i++)
mv_mtw_addstr_center(greet_win, 12+i, descr[i]);
wrefresh(greet_win->win);
wgetch(greet_win->win);
destroy_win(greet_win);
return;
}
void ask_options(game_conf* conf)
{
/* ask the user name, the difficulty level and if she/he wants the timer
* switch on or off
*/
int i, ch, len;
char title[] = "Opzioni di gioco:";
mtWIN* win = create_win(mtLINES-6, mtCOLS-10, 3, 5, MAGENTA_ON_BLACK);
char* label[] = {
"Nome Giocatore :",
"Difficolta` (1-3) :",
"Tempo (si/no) :"
};
int pos_y[] = {5, 7, 9};
int pos_x[] = {24, 24, 24};
char pn_default[MAX_PN_LEN];
int lvl_default = 1;
bool timer_default = FALSE;
char* field_default[3];
field_default[0] = malloc((MAX_PN_LEN+1) * sizeof(char));
field_default[1] = malloc(2 * sizeof(char));
field_default[2] = malloc(3 * sizeof(char));
char* temp = malloc((MAX_PN_LEN+1) * sizeof(char));
/* adjust defaults with old data */
if (strlen(conf->player_name)) strcpy(pn_default, conf->player_name);
else strcpy(pn_default, "Daporlaor");
if (conf->level) lvl_default = conf->level;
else lvl_default = 1;
if (conf->timer) timer_default = conf->timer;
sprintf(field_default[0], "%s", pn_default);
sprintf(field_default[1], "%d", lvl_default);
if (timer_default) sprintf(field_default[2], "si");
else sprintf(field_default[2], "no");
/* print title in the main window */
mv_mtw_addstr_center(win, 2, title);
/* print fields and defaults */
for (i=0; i<3; i++) {
if (term_colors) wattron(win->win, A_BOLD);
mvwaddstr(win->win, pos_y[i], pos_x[i]-20, label[i]);
if (term_colors) wattroff(win->win, A_BOLD);
mvwaddstr(win->win, pos_y[i], pos_x[i], field_default[i]);
}
/* 1: ask player name */
curs_set(1);
wmove(win->win, 5, 24);
wrefresh(win->win);
len = 0; //strlen(pn_default);
while ((ch = wgetch(win->win)) != EOF && ch != 13) {
// delete default value from screen
if (len == 0) {
for (i=0; i<MAX_PN_LEN-1; i++) {
mvwaddch(win->win, pos_y[0], pos_x[0]+i, ' ');
}
wmove(win->win, pos_y[0], pos_x[0]);
}
switch (ch) {
case KEY_BACKSPACE:
if (len > 0) {
mvwaddch(win->win, pos_y[0], --pos_x[0], ' ');
wmove(win->win, pos_y[0], pos_x[0]);
len--;
}
break;
default:
if (len < MAX_PN_LEN-1 && (isalnum(ch) || ch == ' ')) {
mvwaddch(win->win, pos_y[0], pos_x[0]++, ch);
temp[len++] = ch;
}
break;
}
wrefresh(win->win);
}
if (len == 0) {
mvwaddstr(win->win, pos_y[0], pos_x[0], field_default[0]);
strcpy(conf->player_name, field_default[0]);
}
else {
temp[len] = '\0';
strcpy(conf->player_name, temp);
}
/* 2: ask difficulty */
wattron(win->win, COLOR_PAIR(CYAN_ON_BLACK));
mvwaddstr(win->win, pos_y[1], 30, "Usa le frecce <- e ->");
wattroff(win->win, COLOR_PAIR(CYAN_ON_BLACK));
wmove(win->win, pos_y[1], pos_x[1]);
i = lvl_default;
while ((ch = wgetch(win->win)) != EOF && ch != 13) {
switch (ch) {
case KEY_LEFT:
i--;
break;
case KEY_RIGHT:
i++;
break;
}
if (i < 1)
i = 3;
else if (i > 3)
i = 1;
mvwaddch(win->win, pos_y[1], pos_x[1], i + 48);
}
mvwaddstr(win->win, pos_y[1], 30, " ");
conf->level = i;
conf->ammo_tot = AMMO_AVAILABLE(conf->level);
conf->ammo_left = conf->ammo_tot;
/* 3: ask if switch on time */
wattron(win->win, COLOR_PAIR(CYAN_ON_BLACK));
mvwaddstr(win->win, pos_y[2], 30, "Usa le frecce <- e ->");
wattroff(win->win, COLOR_PAIR(CYAN_ON_BLACK));
wmove(win->win, pos_y[2], pos_x[2]+2);
i = timer_default;
while ((ch = wgetch(win->win)) != EOF && ch != 13) {
switch (ch) {
case KEY_LEFT:
case KEY_RIGHT:
if (i) {
i = FALSE;
mvwaddstr(win->win, pos_y[2], pos_x[2], "no");
}
else if (!i) {
i = TRUE;
mvwaddstr(win->win, pos_y[2], pos_x[2], "si");
}
break;
}
}
conf->timer = i;
mvwaddstr(win->win, pos_y[2], 30, " ");
if (term_colors) wattron(win->win, A_BOLD);
mv_mtw_addstr_center(win, 15,
"Premere un tasto qualsiasi per iniziare"
);
if (term_colors) wattroff(win->win, A_BOLD);
wgetch(win->win);
/* exit */
destroy_win(win);
for (i=0; i<3; i++) free(field_default[i]);
curs_set(0);
}
void init_panel(game_conf* conf)
{
/* init the panel with the player name, the timer info and ammos
*/
int i, col, row, j;
/* labels */
wattron(panel->win, COLOR_PAIR(BLUE_ON_BLACK));
mvwaddstr(panel->win, 2, 3, "Giocatore:");
mvwaddstr(panel->win, 2, 33, "Liv.:");
mvwaddstr(panel->win, 2, 42, "Tempo:");
mvwaddstr(panel->win, 4, 33, "x:");
mvwaddstr(panel->win, 4, 42, "y:");
wattroff(panel->win, COLOR_PAIR(BLUE_ON_BLACK));
/* values */
wattron(panel->win, COLOR_PAIR(RED_ON_BLACK));
mvwaddstr(panel->win, 2, 14, conf->player_name);
mvwaddch(panel->win, 2, 39, conf->level + 48);
mvwaddstr(panel->win, 2, 49, "--");
wattroff(panel->win, COLOR_PAIR(RED_ON_BLACK));
/* veritical line */
wattron(panel->win, COLOR_PAIR(panel->border));
for (i=1; i<panel->height-1; i++)
mvwaddch(panel->win, i, 57, ACS_VLINE);
mvwaddch(panel->win, 0, 57, ACS_TTEE);
mvwaddch(panel->win, panel->height-1, 57, ACS_BTEE);
wattroff(panel->win, COLOR_PAIR(panel->border));
/* init ammos */
wattron(panel->win, COLOR_PAIR(BLUE_ON_BLACK));
mvwaddstr(panel->win, 1, 67, "AMMO");
wattroff(panel->win, COLOR_PAIR(BLUE_ON_BLACK));
show_win(panel);
}
void upd_time_info(int time_value)
{
char* time_str = malloc(3 * sizeof(char));
if (term_colors) wattron(panel->win, COLOR_PAIR(RED_ON_BLACK));
sprintf(time_str, "%02i", time_value);
mvwaddstr(panel->win, 2, 49, time_str);
wrefresh(panel->win);
free(time_str);
if (term_colors) wattroff(panel->win, COLOR_PAIR(RED_ON_BLACK));
}
void clear_ammo_info()
{
int i, col, row;
row = 2;
col = 0;
for (i=0; i<30; i++) {
if (col > 9) {
col = 0;
row++;
}
mvwaddch(panel->win, row, 59 + col*2, ' ');
col++;
}
}
void upd_ammo_info(game_conf conf)
{
int i, col, row;
char ammo_ch = '*';
char ammo_used_ch = '-';
if (term_colors) wattron(panel->win, COLOR_PAIR(RED_ON_BLACK));
row = 2;
col = 0;
for (i=1; i<=conf.ammo_tot; i++) {
if (col > 9) {
col = 0;
row++;
}
if (i > conf.ammo_left) {
if (term_colors)
wattroff(panel->win, COLOR_PAIR(RED_ON_BLACK));
else
ammo_ch = ammo_used_ch;
}
mvwaddch(panel->win, row, 59 + col*2, ammo_ch);
col++;
}
if (term_colors) wattroff(panel->win, COLOR_PAIR(RED_ON_BLACK));
wrefresh(panel->win);
}
void init_traffic_lamp()
{
toggle_lamp_lights(FALSE, FALSE, FALSE);
show_win(lamp);
}
void light_the_lamp(unsigned int distance)
{
if (distance < 2) {
toggle_lamp_lights(MAGENTA_ON_BLACK,
MAGENTA_ON_BLACK,
MAGENTA_ON_BLACK
);
}
else if (distance < 10)
toggle_lamp_lights(NO_COLOR, NO_COLOR, GREEN_ON_BLACK);
else if (distance < 20)
toggle_lamp_lights(NO_COLOR, YELLOW_ON_BLACK, NO_COLOR);
else if (distance < 30)
toggle_lamp_lights(RED_ON_BLACK, NO_COLOR, NO_COLOR);
else
toggle_lamp_lights(NO_COLOR, NO_COLOR, NO_COLOR);
wrefresh(lamp->win);
}
void toggle_lamp_lights(int first, int second, int third)
{
/* activate or deactivate lamp lights
*/
if (first)
draw_ascii_circle(lamp, 1, 2, first, " :( :(");
else
draw_ascii_circle(lamp, 1, 2, NO_COLOR, " ");
if (second)
draw_ascii_circle(lamp, 6, 2, second, " :/ :/");
else
draw_ascii_circle(lamp, 6, 2, NO_COLOR, " ");
if (third)
draw_ascii_circle(lamp, 11, 2, third, " :) :)");
else
draw_ascii_circle(lamp, 11, 2, NO_COLOR, " ");
}
void draw_ascii_circle(mtWIN* win, int y, int x, int color, char* text)
{
/* draw an ascii circle, using *y* and *x* as coords for the upper left
* corner of *color*. The first 6 chars of *text* will be placed inside
* the circle
*
* _____
* / \
* / *te \
* \ xt* /
* \_____/
*
*/
int i, line, col;
if (color == NO_COLOR) {
text = " ";
if (term_colors) wattron(win->win, COLOR_PAIR(WHITE_ON_BLACK));
}
else if (term_colors) wattron(win->win, COLOR_PAIR(color));
/* top border */
for (i=3; i<8; i++) mvwaddch(win->win, y, x+i, '_');
/* bottom border */
for (i=3; i<8; i++) mvwaddch(win->win, y+4, x+i, '_');
/* left border */
mvwaddch(win->win, y+1, x+2, '/');
mvwaddch(win->win, y+2, x+1, '/');
mvwaddch(win->win, y+3, x+1, '\\');
mvwaddch(win->win, y+4, x+2, '\\');
/* right border */
mvwaddch(win->win, y+1, x+8, '\\');
mvwaddch(win->win, y+2, x+9, '\\');
mvwaddch(win->win, y+3, x+9, '/');
mvwaddch(win->win, y+4, x+8, '/');
/* text */
i = 0;
line = 2;
col = 4;
while (text[i] != '\0') {
if (i == 3) {
line++;
col = 3;
}
else if (i == 6) {
break;
}
mvwaddch(win->win, y+line, x+col++, text[i++]);
}
if (term_colors) wattroff(win->win, COLOR_PAIR(color));
}
void init_target_area()
{
wclear(field->win);
show_win(field);
}
point* get_random_point(int max_y, int max_x)
{
point* p = malloc(sizeof(point));
srand(time(NULL));
p->y = rand() % max_y;
p->x = rand() % max_x;
return p;
}
point* get_new_target(mtWIN* win)
{
point* p = get_random_point(win->height-2, win->width-4);
if (p->y < 4) p->y = 3; /* avoiding to cover the border */
if (p->x < 4) p->x = 4;
return p;
}
int main_cycle(game_conf* conf)
{
int c, start_time, last_time, now, game_time;
bool loop = TRUE;
int exit_status = NEW_GAME;
int game_status = GAME_RUNNING;
point gunsight;
unsigned int dist = 100;
struct shot_item* next_shot = malloc(sizeof(struct shot_item));
/* get a random target */
conf->target = get_new_target(field);
/* set up timer */
if (conf->timer) {
start_time = (int)time(NULL);
last_time = (int)time(NULL);
game_time = TIME_VALUE;
}
/* update ammos */
clear_ammo_info();
upd_ammo_info(*conf);
/* init the gunsight */
gunsight.y = (int)field->height / 2;
gunsight.x = (int)field->width / 2;
draw_gunsight(field, gunsight, CYAN_ON_BLACK);
/* start the cycle */
wtimeout(field->win, 30);
while (loop) {
if (game_status > GAME_RUNNING) {
wtimeout(field->win, 0);
switch (game_status) {
case GAME_WIN:
set_msg("!!! BINATO !!!", MAGENTA_ON_BLACK);
break;
case GAME_LOSE:
set_msg("Hai perso...", CYAN_ON_BLACK);
break;
}
draw_gunsight(field, gunsight, NO_COLOR);
draw_border(field, field->border, FALSE);
draw_target(field, *(conf->target));
display_shots(next_shot);
while((c = wgetch(field->win)) != 'n' &&
c != 'N' &&
c != 'u' &&
c != 'U')
;
}
else {
c = wgetch(field->win);
}
/* time management */
if (conf->timer && game_status == GAME_RUNNING) {
now = (int)time(NULL);
if (now - last_time) {
game_time--;
last_time = now;
upd_time_info(game_time);
}
if (game_time == 0) {
conf->target = get_new_target(field);
start_time = (int)time(NULL);
game_time = TIME_VALUE;
set_msg("Nuovo bersaglio!!!", RED_ON_BLACK);
}
}
/* key pressed management */
switch (c) {
case 'u':
case 'U':
loop = FALSE;
exit_status = EXIT_GAME;
break;
case 'n':
case 'N':
loop = FALSE;
exit_status = NEW_GAME;
break;
case 'p':
case 'P':
wtimeout(field->win, 0);
set_msg("IN PAUSA", CYAN_ON_BLACK);
while ((c=wgetch(msg->win)) != 'p' && c != 'P')
;
clear_msg();
/* update last_time to preserv old countdown value */
last_time = (int)time(NULL);
wtimeout(field->win, 30);
break;
case KEY_UP:
mv_info_gunsight(&gunsight, DIR_UP);
break;
case KEY_RIGHT:
mv_info_gunsight(&gunsight, DIR_RIGHT);
break;
case KEY_DOWN:
mv_info_gunsight(&gunsight, DIR_DOWN);
break;
case KEY_LEFT:
mv_info_gunsight(&gunsight, DIR_LEFT);
break;
case 's':
case 'S':
conf->ammo_left--;
upd_ammo_info(*conf);
dist = distance(gunsight, *(conf->target));
light_the_lamp(dist);
/* save shots */
next_shot = push_shot(next_shot, gunsight, dist);
/* display all the shots */
display_shots(next_shot);
break;
case 'C':
draw_target(field, *(conf->target));
set_msg("!!! IMBROGLIONE !!!", RED_ON_BLACK);
break;
default:
break;
}
/* check if win or lose */
if (dist < 2) game_status = GAME_WIN;
else if (conf-> ammo_left == 0) game_status = GAME_LOSE;
}
free_shot_list(next_shot);
return exit_status;
}
void draw_gunsight(mtWIN* win, point gs, int color)
{
int vch, hch;
/* rewrite window border */
draw_border(win, win->border, FALSE);
if (color == NO_COLOR) {
vch = hch = ' ';
}
else {
if (term_colors) wattron(win->win, COLOR_PAIR(color));
vch = '|';
hch = ACS_HLINE;
}
/* draw the gunsight */
mvwaddch(win->win, gs.y, gs.x-2, hch);
mvwaddch(win->win, gs.y, gs.x+2, hch);
mvwaddch(win->win, gs.y-1, gs.x, vch);
mvwaddch(win->win, gs.y+1, gs.x, vch);
/* deactivate color */
if (term_colors && color != NO_COLOR)
wattroff(win->win, COLOR_PAIR(color));
wrefresh(win->win);
}
void move_gunsight(mtWIN* win, point* gs, int dir)
{
draw_gunsight(win, *gs, NO_COLOR);
switch (dir) {
case DIR_UP:
if (gs->y > 1) gs->y--; /* consider window border */
break;
case DIR_RIGHT:
if (gs->x < win->width-2) gs->x++;
break;
case DIR_DOWN:
if (gs->y < win->height-2) gs->y++;
break;
case DIR_LEFT:
if (gs->x > 1) gs->x--;
break;
}
draw_gunsight(win, *gs, CYAN_ON_BLACK);
}
unsigned int distance(point shot, point target)
{
int true_dist, adjusted_dist, x_dist, y_dist;
/* Siamo figli di Pitagora e di Caaaasaadeeeei ... */
x_dist = abs(target.x - shot.x);
y_dist = abs(target.y - shot.y);
true_dist = floor(sqrt( pow(x_dist, 2) + pow(y_dist, 2)));
/* adjust the distance considering that the target is wider than
* higher */
if (true_dist < 4) {
switch (y_dist) {
case 0:
if (x_dist == 3 || x_dist == 2) adjusted_dist = 1;
else adjusted_dist = true_dist;
break;
case 1:
if (x_dist == 2) adjusted_dist = 1;
else adjusted_dist = true_dist;
break;
default:
adjusted_dist = true_dist;
break;
}
return adjusted_dist;
}
else {
return true_dist;
}
}