Initial commit

Lab_3/code.c

@@ -0,0 +1,90 @@
+#include <ncurses.h>
+
+struct vec2 {
+    int x;
+    int y;
+};
+
+struct borders {
+    int top;
+    int bottom;
+    int left;
+    int right;
+};
+
+int main()
+{
+    initscr(); // initialise screen
+    clear(); // clear the empty buffer just in case
+    noecho(); // disable the direct typing to the terminal so it doesn't mess with the application
+
+    // here we define utility variables
+
+    // borders for a pen point
+    struct borders b;
+    b.bottom = LINES;
+    b.top = -1;
+    b.left = -1;
+    b.right = COLS;
+    
+    // pen point position
+    struct vec2 position;
+    position.x = COLS;
+    position.y = LINES - 1;
+
+    // pen point direction
+    struct vec2 direction;
+    direction.x = -1;
+    direction.y = 0;
+    
+    // here we start the drawing
+    for (int i = 0; i < COLS*LINES; i++)
+    {
+        // move & paint
+        position.x += direction.x;
+        position.y += direction.y;
+        mvaddch(position.y, position.x, '*');
+
+        // flush the buffer to show result on the screen
+        refresh();
+        
+        // check if we are about to meet the border
+        if (position.x + direction.x <= b.left) { // if yes, then...
+            // turn right
+            direction.x = 0;
+            direction.y = -1;
+
+            // grab the border and pull it towards us as bit
+            b.bottom--;
+        }
+        // and then repeat for every single border we have...
+        else if (position.y + direction.y <= b.top) {
+            direction.x = 1;
+            direction.y = 0;
+
+            b.left++;
+        }
+        else if (position.x + direction.x >= b.right) {
+            direction.x = 0;
+            direction.y = 1;
+
+            b.top++;
+        }
+        else if (position.y + direction.y >= b.bottom) {
+            direction.x = -1;
+            direction.y = 0;
+
+            b.right--;
+        }
+        
+        // and we wait... wait... wait...
+        napms(20);
+    }
+    
+    // hold the buffer until the keypress
+    getch();
+
+    // finish & cleanup
+    endwin();
+    return 0;
+}

Lab_3/run.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+gcc code.c -o code -l ncurses
+./code