Cleanup movement

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

lib/features/entities/enemies/enemy.dart

@@ -61,12 +61,10 @@ abstract class Enemy extends Entity {
     Coordinate2D playerPosition,
     bool Function(int x, int y) isWalkable,
   ) {
-    double dx = playerPosition.x - x;
-    double dy = playerPosition.y - y;
-    double distance = math.sqrt(dx * dx + dy * dy);
+    double distance = position.distanceTo(playerPosition);
 
     // 1. FOV Check
-    double angleToPlayer = math.atan2(dy, dx);
+    double angleToPlayer = position.angleTo(playerPosition);
     double diff = angle - angleToPlayer;
 
     while (diff <= -math.pi) {
@@ -79,14 +77,12 @@ abstract class Enemy extends Entity {
     if (diff.abs() > math.pi / 2) return false;
 
     // 2. Map Check
-    double dirX = dx / distance;
-    double dirY = dy / distance;
+    Coordinate2D dir = (playerPosition - position).normalized;
     double stepSize = 0.2;
-    for (double i = 0; i < distance; i += stepSize) {
-      int checkX = (x + dirX * i).toInt();
-      int checkY = (y + dirY * i).toInt();
 
-      if (!isWalkable(checkX, checkY)) return false;
+    for (double i = 0; i < distance; i += stepSize) {
+      Coordinate2D checkPos = position + (dir * i);
+      if (!isWalkable(checkPos.x.toInt(), checkPos.y.toInt())) return false;
     }
 
     return true;

lib/features/entities/entity.dart

@@ -1,3 +1,5 @@
+import 'package:wolf_dart/classes/coordinate_2d.dart';
+
 enum EntityState { staticObj, idle, patrolling, shooting, pain, dead }
 
 abstract class Entity<T> {
@@ -18,4 +20,6 @@ abstract class Entity<T> {
     this.mapId = 0,
     this.lastActionTime = 0,
   });
+
+  Coordinate2D get position => Coordinate2D(x, y);
 }