cleared up gfx + ph storage

tests/ai_test.rs

@@ -13,9 +13,8 @@ use std::time;
 #[test]
 fn test_reach_astar() {
     let mut board = init_screen(); //Screen::new(40,40);
-    let mut world = World::new();
+    let mut world = World::new(&Point(board.max_x, board.max_y));
 
-    world.clear(Point(0, 0));
     let mut entities = Entities::new();
 
     let a = Ant::new(0, 0);

tests/entity_test.rs

@@ -1,6 +1,7 @@
 use antf::lib::screen::init_screen;
 use antf::lib::world::{World, simulate, render};
 use antf::lib::entity::{Entities, FoodGenerator};
+use antf::lib::point::Point;
 
 use ncurses::*;
 use std::thread::sleep;
@@ -9,7 +10,7 @@ use std::time;
 #[test]
 fn test_foodgen() {
     let mut board = init_screen(); 
-    let mut world = World::new();
+    let mut world = World::new(&Point(board.max_x, board.max_y));
 
     let mut entities = Entities::new();
     let fg = FoodGenerator::new();