Upload files to 'a3'

a3/game.c

@@ -0,0 +1,106 @@
+#include <curses.h>
+#include <stdlib.h>
+#include <string.h>
+#include "world.h"
+#include "game.h"
+
+// Start is called one in the beginning
+void* init_game(){
+    // Allocate memory for the state
+    struct game* st = calloc(1,(sizeof(struct game)));
+    // Initialize state
+    st->mousex = 5;
+    st->mousey = 5;
+    st->catx = 0;
+    st->caty = 0;
+    st->catx_position = 15;
+    st->caty_position = 15;
+    // Store pointer to the state to the world variable
+    return st;
+}
+
+// Step is called in a loop once in interval.
+// It should modify the state and draw it.
+int game_event(struct event* event,void* game){
+    // Get state pointer
+    struct game* state = game;
+    char msg[200];
+    sprintf(msg,"%d",event->type);
+    set_message(msg,10,0);
+    if ( event->type == EVENT_ESC){
+        // Non zero means finish the loop and stop the game.
+        return 1;
+    }
+    // Read game variable and update the  eventstate
+
+    // Is mouse caught ?
+    if ((state->caty_position == state->mousey) && (state->catx_position == state->mousex)){
+        clear_screen();
+        set_message("HAM",12,13);
+        return 0;
+    }
+    else if(event->type == EVENT_TIMEOUT) {
+        // Move cat
+        //state->catx_position += state->catx;
+        //state->caty_position += state->caty;
+        int cx = state->catx_position + state->catx;
+        int cy = state->caty_position + state->caty;
+        if (cx < 0 || cy < 0 || cx > event->width || cy > event->height){
+
+        }
+        else {
+            state->catx_position = cx;
+            state->caty_position = cy;
+        }
+
+        //state->catx_position += state->catx;
+        //state->caty_position += state->caty;
+        //state->caty_position += state->caty;
+        // random mouse movement
+        int m = rand() % 6;
+        if (m == 0){
+            state->mousey -= 1;
+        }
+        else if (m == 1){
+            state->mousey += 1;
+        }
+        else if (m == 2){
+            state->mousex -= 1;
+        }
+        else if (m == 3){
+            state->mousex += 1;
+        }
+        // Je myska mimo plochy
+    }
+    else if (event->type == EVENT_KEY){
+        // Move cat according to keyboard
+        if ( event->key == KEY_UP){
+            state->catx = 0;
+            state->caty = -1;
+        }
+        else if ( event->key == KEY_DOWN){
+            state->catx = 0;
+            state->caty = 1;
+        }
+        else if ( event->key == KEY_LEFT){
+            state->catx = -1;
+            state->caty = 0;
+        }
+        else if ( event->key == KEY_RIGHT){
+            state->catx = +1;
+            state->caty = 0;
+        }
+    }
+	// Draw world state 
+    //
+    // Draw cat
+    clear_screen();
+    set_color_cell('c',state->catx_position,state->caty_position,COLOR_YELLOW,COLOR_RED);
+    set_color_cell('-',state->catx_position-1,state->caty_position,COLOR_YELLOW,COLOR_GREEN);
+    //set_cell('c',state->catx_position,state->caty_position);
+    // Draw mouse
+    set_cell('m',state->mousex,state->mousey);
+    set_message( state->message,1,0);
+    return 0;
+}
+

a3/game.h

@@ -0,0 +1,30 @@
+#ifndef _GAME_H_INCLUDE_
+#define _GAME_H_INCLUDE_
+#include "world.h"
+
+// Set of variables that expresses state of the game.
+// 
+struct game {
+    // X speed of the cat
+    int catx;
+    // Y speed  of the cat
+    int caty;
+    // X position of the cat
+    int catx_position;
+    // Y opsition of the cat
+    int caty_position;;
+    // X position of the mouse
+    int mousex;
+    // Y position of the mouse
+    int mousey;
+    // Funky message
+    char message[100];
+};
+
+// Returns pointer to  newly allocated state
+void* init_game();
+
+// Changes world according to the game state (pressed key, screen size or other event)
+int game_event(struct event* event,void* game);
+
+#endif

a3/main.c

@@ -0,0 +1,9 @@
+#include "game.h"
+#include "world.h"
+#include <stdlib.h>
+
+
+int main(int argc, char** argv){
+    start_world(init_game,game_event,free);
+    return 0;
+}

a3/world.c

@@ -0,0 +1,198 @@
+#include "world.h"
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+int TIMEOUT;
+
+void abort_game(const char* message){
+    endwin();
+    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 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_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(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.");
+        return -1;
+    }
+    noecho(); // Nevypisuj vstup na obrazovku
+    cbreak(); // Zabudni starý vstup
+    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();
+        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");
+    }
+    void* game = NULL;
+    if (init_game != NULL){
+         game = init_game();
+         assert_message(game != NULL,"init_game:: should return non null pointer");
+    }
+    timeout(TIMEOUT);
+    // Initial step
+    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) {
+        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
+        event.time_ms = clock();
+        r = world_event(&event,game);
+        refresh();
+        event.time_ms = clock();
+        // set new timeout
+        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);
+    }
+    endwin();
+    return r;
+};

a3/world.h

@@ -0,0 +1,113 @@
+#ifndef _WORLD_H_
+#define _WORLD_H_
+
+#include <curses.h>
+
+/**
+ * World represented as a rectangular matrix of colorful characters.
+ * 
+ * Point [0,0] is displayed the upper left corner of the screen.
+ * 
+ */
+
+enum event_type {
+    EVENT_START,
+    EVENT_TIMEOUT,
+    EVENT_KEY,
+    EVENT_MOUSE,
+    EVENT_RESIZE,
+    EVENT_ESC,
+    EVENT_END,
+};
+
+struct event {
+    /**
+     * Last width of the screen.
+     */
+    int width;
+    /**
+     * Last height of the screen.
+     */
+    int height;
+    /**
+     * Last pressed key or Curses event.
+     *
+     * Special event  values:
+     * ERR if timeout,
+     * KEY_RESIZE if screen resize
+     * KEY_EVENT, other event,
+     * KEY_MOUSE, mouse clicked
+     *
+     * Key values:
+     *
+     * ' ' Space
+     * KEY_DOWN Arrow down
+     * KEY_UP Arrow up
+     * KEY_LEFT Arrow left
+     * KEY_RIGHT Arrow right
+     * KEY_A1 Upper left of keypad
+     * KEY_A3 Upper right of keypad
+     * KEY_B2 Center of keypad
+     * KEY_C1 Lower left of keypad
+     * KEY_C3 Lower right of keypad
+     *
+     * KEY_ENTER
+     * KEY_BACKSPACE
+     */
+    int key;
+    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 event 
+ * @param x coordinate of cell
+ * @param y coordinate of cell
+ * @param new state of the cell
+ */
+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);
+
+
+/**
+ *
+ * @param event
+ * @param number of commandline arguments
+ * @param init_world
+ * @param destroy_world
+ *
+ * void init_world(struct event* w);
+ * Initializes user state.
+ * Free user state.
+ * @param event
+ */
+
+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