better error handling on loading above map, TODOL: Optimise map parsing

src/function.rs

@@ -22,3 +22,19 @@ pub fn clear_screen()
 		.status()
 		.expect("Failed to clear screen");
 }
+
+pub fn read_element_from_map(vector: &Vec<Vec<char>>, index1: usize, index2: usize) -> Result<char, ()>
+{
+	if vector.len() <= index1
+	{
+		Err(())
+	}
+	else if vector[index1].len() <= index2
+	{
+		Err(())
+	}
+	else
+	{
+		Ok(vector[index1][index2])
+	}
+}

src/main.rs

@@ -55,7 +55,7 @@ fn main()
 			{ // Parse the map file into a vector
 				if DEBUG_MODE == false
 				{
-					function::clear_screen;
+					function::clear_screen();
 				}
 				output_map::output_map // Call output_map fuctino from output_map.rs
 				(

src/output_map.rs

@@ -3,7 +3,7 @@ use std::collections::HashMap;
 
 use crate::Coordinates;
 use crate::DEBUG_MODE;
-
+use crate::function;
 
 // Output the map based on map vector
 pub fn output_map(
@@ -51,7 +51,11 @@ pub fn output_map(
 				if x >= 0 && x < ground_map[z as usize].len() as i16 
 				{
 					let character: char = ground_map[z as usize][x as usize];
-					let above_character: char = above_map[z as usize][x as usize];
+					let mut above_character: char = ' ';
+					if let Ok(above_element) = function::read_element_from_map(&above_map, z as usize, x as usize)
+					{
+						above_character = above_element;
+					}
 					// Check if the character is at the current coordinates
 					if z == player_coordinates.z && x == player_coordinates.x 
 					{
@@ -64,7 +68,7 @@ pub fn output_map(
 						)
 					}
 					// Else check if there's something on the above y level
-					else if blocks.contains_key(&above_character) && above_character != ' ' 
+					else if blocks.contains_key(&above_character) && above_character != ' '
 					{
 						print!
 						(
@@ -108,6 +112,7 @@ pub fn output_map(
 							)
 						)
 					}
+					
 				}
 			}
 			println!("");