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This commit is contained in:
Daniel Hládek 2021-04-20 08:54:59 +02:00
parent 74d9392626
commit f96905a79e
6 changed files with 327 additions and 179 deletions
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4
Makefile
View File

@ -9,6 +9,6 @@ clean:
rm *.o
rm game
game: main.o game.o world.o snake.o
gcc -rdynamic -g main.o game.o world.o snake.o -lcurses -lm -o game
game: main.o world.o snake.o
gcc -rdynamic -g main.o world.o snake.o -lcurses -lm -o game

98
game.c
View File

@ -4,16 +4,17 @@
#include "world.h"
#include "game.h"
#include "snake.h"
// This file contains functions for drawing the the game and changing the state
// Start is called one in the beginning
void* init_game(struct world* world){
void* init_game(){
// Allocate memory for the state
struct state* st = calloc(1,(sizeof(struct state)));
st->snake = NULL;
st->sx = 1;
st->sy = 0;
return st;
}
void init_snake(struct event* world, struct state* st){
int cy = world->height/2;
int cx = world->width/2 - 5;
for (int i = 0; i < 5; i++){
@ -26,55 +27,60 @@ void* init_game(struct world* world){
st->foodx[i] = rand() % w;
st->foody[i] = rand() % h;
}
return st;
}
// Step is called in a loop once in interval.
// It should modify the state and draw it.
int world_event(struct world* w,void* game){
int world_event(struct event* w,void* game){
// Get state pointer
struct state* st = game;
int key = w->key;
if (w->type == EVENT_START){
init_snake(w,st);
}
else if (w->type == EVENT_KEY){
int key = w->key;
if (key == KEY_RIGHT){
st->sx = 1;
st->sy = 0;
}
else if (key == KEY_LEFT){
st->sx = -1;
st->sy = 0;
}
else if (key == KEY_DOWN){
st->sx = 0;
st->sy = 1;
}
else if (key == KEY_UP){
st->sx = 0;
st->sy = -1;
}
else if (key == KEY_ENTER){
// Non zero means finish the loop and stop the game.
return 1;
}
st->width = w->width;
st->height = w->height;
int r = step_state(st);
// Draw snake
struct snake* sn = st->snake;
while (sn != NULL){
set_cell(w,'x',sn->x,sn->y);
sn = sn->next;
}
for (int i = 0 ; i < FOOD_COUNT; i++){
if (st->foodx[i] >= 0 && st->foody[i] >= 0){
set_cell(w,'*',st->foodx[i],st->foody[i]);
if (key == KEY_RIGHT){
st->sx = 1;
st->sy = 0;
}
else if (key == KEY_LEFT){
st->sx = -1;
st->sy = 0;
}
else if (key == KEY_DOWN){
st->sx = 0;
st->sy = 1;
}
else if (key == KEY_UP){
st->sx = 0;
st->sy = -1;
}
}
if (r){
char message[] = "Koniec";
for (int i = 0; i < 6; i++){
set_cell(w,message[i],10+i,10);
else if (w->type == EVENT_ESC){
// Non zero means finish the loop and stop the game.
return 1;
}
else if (w->type == EVENT_TIMEOUT){
st->width = w->width;
st->height = w->height;
int r = step_state(st);
// Draw snake
struct snake* sn = st->snake;
while (sn != NULL){
set_cell('x',sn->x,sn->y);
sn = sn->next;
}
for (int i = 0 ; i < FOOD_COUNT; i++){
if (st->foodx[i] >= 0 && st->foody[i] >= 0){
set_cell('*',st->foodx[i],st->foody[i]);
}
}
if (r){
char message[] = "Koniec";
for (int i = 0; i < 6; i++){
set_cell(message[i],10+i,10);
}
}
}
return 0;

21
game.h
View File

@ -2,25 +2,10 @@
#define _GAME_H_INCLUDE_
#include "world.h"
// Set of variables that expresses state of the game.
//
struct game {
// X position of the cat
int catx;
// Y opsition of the cat
int caty;
// X position of the mouse
int mousex;
// Y position of the mouse
int mousey;
// Funky message
char message[100];
};
// Returns pointer to newly allocated world
void* init_game(struct world* g);
// Returns pointer to newly allocated state
void* init_game();
// Changes world according to the game state (pressed key, screen size or other event)
int world_event(struct world* world,void* game);
int world_event(struct event* event,void* state);
#endif

88
main.c
View File

@ -1,9 +1,93 @@
#include "game.h"
#include "world.h"
#include <stdlib.h>
#include <curses.h>
#include <stdlib.h>
#include <string.h>
#include "snake.h"
// This file contains functions for drawing the the game and changing the state
// Start is called one in the beginning
void* init_game(){
// Allocate memory for the state
struct state* st = calloc(1,(sizeof(struct state)));
return st;
}
void init_snake(struct event* world, struct state* st){
int cy = world->height/2;
int cx = world->width/2 - 5;
for (int i = 0; i < 5; i++){
st->snake = add_snake(st->snake,cx + i ,cy);
}
int h = world->height;
int w = world->width;
for (int i = 0; i < 5; i++){
st->foodx[i] = rand() % w;
st->foody[i] = rand() % h;
}
}
// Step is called in a loop once in interval.
// It should modify the state and draw it.
int world_event(struct event* w,void* game){
// Get state pointer
struct state* st = game;
if (w->type == EVENT_START){
init_snake(w,st);
}
else if (w->type == EVENT_KEY){
int key = w->key;
if (key == KEY_RIGHT){
st->sx = 1;
st->sy = 0;
}
else if (key == KEY_LEFT){
st->sx = -1;
st->sy = 0;
}
else if (key == KEY_DOWN){
st->sx = 0;
st->sy = 1;
}
else if (key == KEY_UP){
st->sx = 0;
st->sy = -1;
}
}
else if (w->type == EVENT_ESC){
// Non zero means finish the loop and stop the game.
return 1;
}
else if (w->type == EVENT_TIMEOUT){
st->width = w->width;
st->height = w->height;
int r = step_state(st);
// Draw snake
struct snake* sn = st->snake;
while (sn != NULL){
set_cell('x',sn->x,sn->y);
sn = sn->next;
}
for (int i = 0 ; i < FOOD_COUNT; i++){
if (st->foodx[i] >= 0 && st->foody[i] >= 0){
set_cell('*',st->foodx[i],st->foody[i]);
}
}
if (r){
char message[] = "Koniec";
for (int i = 0; i < 6; i++){
set_cell(message[i],10+i,10);
}
}
}
return 0;
}
int main(int argc, char** argv){
start_world(world_event,init_game,free);
start_world(init_game,world_event,free);
return 0;
}

218
world.c
View File

@ -5,67 +5,80 @@
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <execinfo.h>
void print_backtrace() {
//https://linux.die.net/man/3/backtrace_symbols
int j, nptrs;
void *buffer[100];
char **strings;
nptrs = backtrace(buffer, 100);
printf("backtrace() returned %d addresses\n", nptrs);
/* The call backtrace_symbols_fd(buffer, nptrs, STDOUT_FILENO)
would produce similar output to the following: */
strings = backtrace_symbols(buffer, nptrs);
if (strings == NULL) {
perror("backtrace_symbols");
exit(EXIT_FAILURE);
}
for (j = 0; j < nptrs; j++)
printf("%s\n", strings[j]);
free(strings);
}
int TIMEOUT;
void abort_game(const char* message){
endwin();
print_backtrace();
puts(message);
exit(1);
}
void check_bounds(const char* source,int x, int y){
char msg[200];
if (x < 0 || x >= COLS){
sprintf(msg,"%s:: width %d is out of bounds (0,%d)",source,x,COLS);
abort_game(msg);
}
if (y < 0 || y >= LINES){
sprintf(msg,"%s:: height %d is out of bounds (0,%d)",source,y,LINES);
abort_game(msg);
}
}
void clear_screen(){
// Clear screen
mvaddch(0,0,' ');
int screenchars = LINES*COLS;
for (int j = 1; j < screenchars;j++ ){
addch(' ');
}
}
void game_speed(int value){
if (value < 0){
abort_game("world_seed:: cannot be negative\n");
}
TIMEOUT =value;
}
void set_message(const char* message,int x,int y) {
int l = strlen(message);
for (int i = 0; i < l; i++){
check_bounds("set_message",x+i,y);
set_cell(message[i],x+i,y);
}
}
void assert_message(int event,const char* message){
if (event == 0){
abort_game(message);
}
}
void stamp_cell(struct world* w,int character,enum color_stamp pen, int x,int y) {
assert_message(w != NULL,"stamp_cell:: world is NULL");
if (x < 0 || x >= w->width){
char msg[100];
sprintf(msg,"stamp_cell:: width %d is out of bounds (0,%d)",x,w->width);
abort_game(msg);
}
if (y < 0 || y >= w->height){
char msg[100];
sprintf(msg,"stamp_cell:: height %d is out of bounds (0,%d)",y,w->height);
abort_game(msg);
}
attron(pen);
mvaddch(y,x,character);
attroff(pen);
void set_cell(int character,int x,int y) {
check_bounds("set_cell",x,y);
set_color_cell(character,x,y,COLOR_WHITE,COLOR_BLACK);
}
void set_cell(struct world* w,int character,int x,int y) {
stamp_cell(w,character,0,x,y);
void set_color_cell(int character,int x,int y,short front_color,short back_color){
check_bounds("set_color_cell",x,y);
if (has_colors()){
int pair = COLOR_COUNT * front_color + back_color;
attron(COLOR_PAIR(pair));
mvaddch(y,x,character);
attroff(COLOR_PAIR(pair));
}
else{
mvaddch(y,x,character);
}
}
int start_world(int (*world_event)(struct world* world,void* game),void* (*init_game)(struct world*),void (*destroy_game)(void*)){
int start_world(void* (*init_game)(),int (*world_event)(struct event* event,void* game),void (*destroy_game)(void*)){
srand(time(NULL));
int r = 1;
// Speed global variable
TIMEOUT = 100;
if (initscr() == NULL){
// TODO Which Error?
puts("Curses Error.");
@ -76,60 +89,107 @@ int start_world(int (*world_event)(struct world* world,void* game),void* (*init_
nodelay(stdscr,TRUE); // Nečakaj na stlačenie
keypad(stdscr,TRUE); // Aktivuje šípky
curs_set(FALSE); // Neviditeľný kurzor
/* Get all the mouse events */
mousemask(ALL_MOUSE_EVENTS, NULL);
MEVENT mouse_event;
if (has_colors()){ // Zistenie či terminál podporuje farby
start_color();
// Pera na ciernom podklade
init_pair(BLACK_FRONT, COLOR_BLACK, COLOR_BLACK);
init_pair(WHITE_FRONT, COLOR_WHITE, COLOR_BLACK);
init_pair(RED_FRONT, COLOR_RED, COLOR_BLACK);
init_pair(GREEN_FRONT, COLOR_GREEN, COLOR_BLACK);
init_pair(BLUE_FRONT, COLOR_BLUE, COLOR_BLACK);
init_pair(CYAN_FRONT, COLOR_CYAN, COLOR_BLACK);
init_pair(MAGENTA_FRONT,COLOR_MAGENTA, COLOR_BLACK);
init_pair(YELLOW_FRONT, COLOR_YELLOW, COLOR_BLACK);
init_pair(BLACK_BACK, COLOR_BLACK, COLOR_BLACK);
init_pair(WHITE_BACK, COLOR_BLACK, COLOR_WHITE);
init_pair(RED_BACK, COLOR_BLACK, COLOR_RED);
init_pair(GREEN_BACK, COLOR_BLACK, COLOR_GREEN);
init_pair(BLUE_BACK, COLOR_BLACK, COLOR_BLUE);
init_pair(CYAN_BACK, COLOR_BLACK, COLOR_CYAN);
init_pair(MAGENTA_BACK, COLOR_BLACK, COLOR_MAGENTA);
init_pair(YELLOW_BACK, COLOR_BLACK, COLOR_YELLOW);
for (int i = 0; i < COLOR_COUNT;i++){
for (int j = 0; j < COLOR_COUNT;j++){
init_pair(i * COLOR_COUNT + j, i,j);
}
}
}
else {
puts("No colors!\n");
}
struct world world;
world.height = LINES;
world.width = COLS;
world.interval = 100;
world.key = ERR;
void* game = NULL;
if (init_game != NULL){
game = init_game(&world);
assert_message(game != NULL,"init_game should return non null pointer");
game = init_game();
assert_message(game != NULL,"init_game:: should return non null pointer");
}
timeout(world.interval);
timeout(TIMEOUT);
// Initial step
r = world_event(&world,game);
struct event event;
memset(&event,0,sizeof(struct event));
event.height = LINES;
event.width = COLS;
event.type = EVENT_START;
clock_t start_time = clock();
clock_t last_timeout = start_time;
clock_t next_timeout = last_timeout + TIMEOUT;
event.time_ms = start_time;
// Start event
r = world_event(&event,game);
refresh();
while (!r) {
world.height = LINES;
world.width = COLS;
world.key = getch();
// Clear screen
mvaddch(0,0,' ');
int screenchars = LINES*COLS;
for (int j = 1; j < screenchars;j++ ){
addch(' ');
memset(&event,0,sizeof(struct event));
event.height = LINES;
event.width = COLS;
event.key = getch();
// No key was pressed
if (event.key == ERR){
event.type = EVENT_TIMEOUT;
last_timeout = clock();
next_timeout = last_timeout + TIMEOUT;
}
// Mouse event
else if (event.key == KEY_MOUSE ){
event.type = EVENT_MOUSE;
if(getmouse(&mouse_event) == OK){
event.mouse_x = mouse_event.x;
event.mouse_y = mouse_event.y;
if(mouse_event.bstate & BUTTON1_PRESSED){
event.mouse_left = 1;
}
if(mouse_event.bstate & BUTTON2_PRESSED){
event.mouse_middle = 1;
}
if(mouse_event.bstate & BUTTON3_PRESSED){
event.mouse_right = 1;
}
}
}
else if (event.key == KEY_RESIZE) {
event.type = EVENT_RESIZE;
}
else{
event.type = EVENT_KEY;
if (event.key == 27){
int k = getch();
if (k == -1){
// Esc Was pressed
event.type = EVENT_ESC;
}
else {
// Alt was pressed
event.key = k;
event.alt_key = 1;
}
}
}
// Draw new world
r = world_event(&world,game);
event.time_ms = clock();
r = world_event(&event,game);
refresh();
event.time_ms = clock();
// set new timeout
timeout(world.interval);
int nt = next_timeout - event.time_ms;
//printf("%d\n",nt);
if (nt > 0){
timeout(nt);
}
else {
timeout(TIMEOUT);
next_timeout = event.time_ms + TIMEOUT;
}
}
memset(&event,0,sizeof(struct event));
event.height = LINES;
event.width = COLS;
event.type = EVENT_END;
event.time_ms = clock();
world_event(&event,game);
if (destroy_game != NULL){
destroy_game(game);
}

77
world.h
View File

@ -2,6 +2,7 @@
#define _WORLD_H_
#include <curses.h>
/**
* World represented as a rectangular matrix of colorful characters.
*
@ -9,7 +10,17 @@
*
*/
struct world {
enum event_type {
EVENT_START,
EVENT_TIMEOUT,
EVENT_KEY,
EVENT_MOUSE,
EVENT_RESIZE,
EVENT_ESC,
EVENT_END,
};
struct event {
/**
* Last width of the screen.
*/
@ -18,10 +29,6 @@ struct world {
* Last height of the screen.
*/
int height;
/**
* Interval in miliseconds to wait for next step.
*/
int interval;
/**
* Last pressed key or Curses event.
*
@ -48,53 +55,59 @@ struct world {
* KEY_BACKSPACE
*/
int key;
};
enum color_stamp {
BLACK_FRONT,
WHITE_FRONT,
RED_FRONT,
GREEN_FRONT,
BLUE_FRONT,
CYAN_FRONT,
MAGENTA_FRONT,
YELLOW_FRONT,
BLACK_BACK,
WHITE_BACK,
RED_BACK,
GREEN_BACK,
BLUE_BACK,
CYAN_BACK,
MAGENTA_BACK,
YELLOW_BACK,
int alt_key;
enum event_type type;
int mouse_x;
int mouse_y;
int mouse_left;
int mouse_right;
int mouse_middle;
long int time_ms;
};
/**
* Sets cell to a state.
* @param world
* @param event
* @param x coordinate of cell
* @param y coordinate of cell
* @param new state of the cell
*/
void set_cell(struct world* w,int character,int x,int y);
void set_cell(int character,int x,int y);
/**
* COLOR_BLACK 0
* COLOR_RED 1
* COLOR_GREEN 2
* COLOR_YELLOW 3
* COLOR_BLUE 4
* COLOR_MAGENTA 5
* COLOR_CYAN 6
* COLOR_WHITE 7
*/
#define COLOR_COUNT 8
void set_color_cell(int character,int x,int y,short front_color,short back_color);
void stamp_cell(struct world* w,int character,enum color_stamp stamp,int x,int y);
/**
*
* @param world
* @param event
* @param number of commandline arguments
* @param init_world
* @param destroy_world
*
* void init_world(struct world* w);
* void init_world(struct event* w);
* Initializes user state.
* Free user state.
* @param world
* @param event
*/
int start_world(int (*world_event)(struct world* world,void* game),void* (*init_game)(struct world* world),void (*destroy_game)(void* game));
int start_world(void* (*init_game)(),int (*world_event)(struct event* event,void* game),void (*destroy_game)(void* game));
void game_speed(int value);
void set_message(const char* message,int x,int y);
void clear_screen();
#endif