day 4, part 1 complete

aoc-4/src/main.rs

@@ -2,12 +2,12 @@ use std::fs;
 use grid::*;
 fn main() {
     println!("Lets begin, day 4, part 1");
-    // let file_path = "src/input.txt";
-    let file_path = "src/example.txt";
+    let file_path = "src/input.txt";
+    // let file_path = "src/example.txt";
 
     //figure out size
-    let mut x_size = 0;
-    let mut y_size = 0;
+    let mut x_size: i32 = 0;
+    let mut y_size: i32 = 0;
     for line in fs::read_to_string(file_path).unwrap().lines() {
         // create some sort of grd structure to hold all the symbols
         // also need to figure out how to deal with the edges 
@@ -24,7 +24,7 @@ fn main() {
     }
     println!("Grid Size: {x_size} x {y_size}");
 
-    let mut grid : Grid<char> = Grid::new(y_size,x_size);
+    let mut grid : Grid<char> = Grid::new(y_size as usize,x_size as usize);
     
     
     let mut x = 0;
@@ -44,5 +44,76 @@ fn main() {
         
     }
 
-    println!("{grid:?}")
+    println!("{grid:#?}");
+
+    // now determine which ones can be removed 
+    let result = access_check(grid, x_size, y_size);
+    println!("Output: {result} rolls are accessible");
+
+    // println!("{grid:#?}");
+
+    
+
 }
+
+fn access_check(mut grid : Grid<char>, x_size : i32, y_size : i32) -> i32 {
+    let mut accessible  = 0;
+    let mut demo_grid = grid.clone();
+
+    
+    for x in 0..x_size {
+        // create some sort of grd structure to hold all the symbols
+        // also need to figure out how to deal with the edges 
+
+        for y in 0..y_size {
+            // grid[(y,x)] = char;
+            // let value = grid.get(x,y).unwrap();
+            // println!("{value:?}");
+            // x += 1;
+            if grid[(y as usize ,x as usize)]  == '@'{
+                //meow
+                let mut rolls = 0;
+                rolls += check_tile(x-1, y-1, &grid, x_size, y_size);
+                rolls += check_tile(x-1, y, &grid, x_size, y_size);
+                rolls += check_tile(x-1, y+1, &grid, x_size, y_size);
+                rolls += check_tile(x, y-1, &grid, x_size, y_size);
+                rolls += check_tile(x, y+1, &grid, x_size, y_size);
+                rolls += check_tile(x+1, y-1, &grid, x_size, y_size);
+                rolls += check_tile(x+1, y, &grid, x_size, y_size);
+                rolls += check_tile(x+1, y+1, &grid, x_size, y_size);
+                if rolls < 4{
+                    accessible += 1;
+                    demo_grid[(y as usize ,x as usize)]  = 'X';
+                }
+            }
+            // println!(grid[(y)]);
+            
+        }
+        
+        
+    }
+    println!("{demo_grid:#?}");
+
+    return accessible;
+}
+
+fn check_tile(x : i32, y:i32, grid : &Grid<char>, x_size : i32, y_size : i32) -> i32{
+    // returns 1 if the specified tile contains an '@'
+    // otherwise returns 0, including if the tile is out of bounds
+    if x < 0 || x > x_size-1{
+        return 0;
+    }
+    else if y < 0 || y > y_size-1 {
+        return 0;
+    }
+
+    if grid[(y as usize,x as usize)] == '@'{
+        return 1;
+    }
+    else{
+        return 0;
+    }
+
+    // return 0;
+}
+