Add enemy class

Military-Hero-Core/src/com/annimon/militaryhero/Enemy.java

@@ -0,0 +1,41 @@
+package com.annimon.militaryhero;
+
+import com.annimon.jecp.Graphics;
+import com.annimon.jecp.Image;
+
+/**
+ * @author aNNiMON
+ */
+public class Enemy {
+    
+    private static final Image enemy = ImageLoader.load(ImageLoader.ENEMY);
+    private static final int enemyWidth = enemy.getWidth();
+    private static final int enemyHeight = enemy.getHeight();
+    
+    private final int x, y;
+    private boolean isVisible;
+
+    public Enemy(int x, int y) {
+        this.x = x;
+        this.y = y;
+        isVisible = true;
+    }
+    
+    public boolean isCollide(int sx, int sy) {
+        if (inRange(sx, x, x + enemyWidth) && inRange(sy, y, y + enemyHeight)) {
+            isVisible = false;
+            return true;
+        }
+        return false;
+    }
+    
+    public void draw(Graphics g) {
+        if (isVisible) {
+            g.drawImage(enemy, x, y);
+        }
+    }
+    
+    private boolean inRange(int value, int min, int max) {
+        return (value >= min) && (value <= max);
+    }
+}

Military-Hero-Core/src/com/annimon/militaryhero/ImageLoader.java

@@ -11,8 +11,8 @@ public class ImageLoader {
     public static final String 
             SNIPER_AIM = "sniper_aim.png",
             BACKGROUND = "background.jpg",
-            OBSTACLES = "obstacles.png";
+            OBSTACLES = "obstacles.png",
-    
+            ENEMY = "enemy.png";
     
     public static Image load(String name) {
         try {