From 92f56b6a5a07eae2b8919a81c9615b34b82c2fb4 Mon Sep 17 00:00:00 2001
From: Andrii Hermaniuk <andrii.hermaniuk@student.tuke.sk>
Date: Fri, 29 Apr 2022 11:07:53 +0200
Subject: [PATCH] add

---
 du7/snake.c      | 112 -----------------------------------------------
 du7/snake/main.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 110 insertions(+), 112 deletions(-)
 delete mode 100644 du7/snake.c
 create mode 100644 du7/snake/main.c

diff --git a/du7/snake.c b/du7/snake.c
deleted file mode 100644
index e937a56..0000000
--- a/du7/snake.c
+++ /dev/null
@@ -1,112 +0,0 @@
-#include "snake.h"
-#include <stdlib.h>
-#include <curses.h>
-
-//void freeAll(struct snake* prvok);
-
-struct snake* add_snake(struct snake* snake,int x,int y){
-    
-    struct snake* head = calloc(1,sizeof(struct snake));
-    head->x = x;
-    head->y = y;
-    head->next = snake;
-
-    return head;
-}
-
-struct snake* remove_snake(struct snake* snake){
-    if(!snake->next&&!snake)
-        return NULL; 
-
-    struct snake* last = snake;
-    struct snake* secondLast = snake; 
-
-    while(1){
-        if(!last->next){
-            free(last);
-            secondLast->next=NULL; 
-            return snake;
-        }
-        secondLast=last;
-        last=last->next;
-    }
-}
-
-
-void free_snake(struct snake* sn){
-    struct snake* this = sn;
-    
-    while(this){
-        struct snake* next = this->next;
-        free(this);
-        this = next;
-    }
-}
-
-/*
-void freeAll(struct snake* prvok){
-    if(!prvok) 
-        break;
-
-    else if(prvok->next)
-        freeAll(prvok->next); 
- 
-    free(prvok); 
-}*/
-
-
-int is_snake(struct snake* snake,int x,int y){
-    
-    struct snake* this = snake;
-
-    while(this){
-        if(this->x==x && this->y==y)
-            return 1;
-
-        this = this->next;
-    }
-    return 0;
-}
-//Spojkový zoznam =============================> celá hra
-
-
-int step_state(struct state* st){
-
-	int nx = (st->snake->x + st->sx);
-    int ny = (st->snake->y + st->sy);
-    
-    if(is_snake(st->snake,nx, ny))
-        return END_SNAKE; 
-//
-    for(int i = 0;i < FOOD_COUNT; i++){
-        if(nx==st->foodx[i]&&ny==st->foody[i]){
-            st->foody[i]=-1;
-            st->foodx[i]=-1;
-            
-            add_snake(st->snake, nx, ny);
-        }
-    }
-    
-    int is_all_eaten=1;
-    for(int i = 0;i < FOOD_COUNT; i++){
-        if(st->foodx[i]>=0){
-            is_all_eaten = 0;
-            break;
-        }
-    }
-    
-    if(is_all_eaten)
-        return END_FOOD;
-// 
-    
-    if(nx<0||ny<0||nx>=COLS||ny>=LINES)
-        return END_WALL;
-//
-
-    if(st->snake->x != nx && st->snake->y != ny){
-        remove_snake(st->snake);
-        add_snake(st->snake, nx, ny);
-    }
-
-    return END_CONTINUE;
-}
diff --git a/du7/snake/main.c b/du7/snake/main.c
new file mode 100644
index 0000000..9e5ec9a
--- /dev/null
+++ b/du7/snake/main.c
@@ -0,0 +1,110 @@
+#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;
+}
+
+// The first event
+// Initialize game state
+// - borders
+// - snake position
+// - food position
+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;
+    }
+    // Initial game vector
+    st->sx = 1;
+    st->sy = 0;
+}
+
+// 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){
+        // Called on beginning
+        init_snake(w,st);
+    }
+    // Called on key press
+    else if (w->type == EVENT_KEY){
+        int key = w->key;
+        // Modifies vector of snake movement
+        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;
+        }
+    }
+    // Called on esc key
+    else if (w->type == EVENT_ESC){
+            // Non zero means finish the loop and stop the game.
+            return 1;
+    }
+    // Called on interval timeout
+    else if (w->type == EVENT_TIMEOUT){
+        clear_screen();
+        // Copy screen size
+        st->width = w->width;
+        st->height = w->height;
+        // Change game state
+        int r = step_state(st);
+        char ms[200];
+        sprintf(ms,"r %d\n",r);
+        set_message(ms,9,9);
+        // Draw snake
+        struct snake* sn = st->snake;
+        while (sn != NULL){
+            set_cell('x',sn->x,sn->y);
+            sn = sn->next;
+        }
+        // Draw food
+        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]);
+            }
+        }
+        // Stop the game
+        if (r){
+            char message[] = "Koniec";
+            set_message(message,10,10);
+        }
+    }
+    return 0;
+}
+
+
+int main(int argc, char** argv){
+    start_world(init_game,world_event,free);
+    return 0;
+}