added projectile system and sample fireball projectile

src/de/miaurizius/jgame2d/entity/Player.java

@@ -7,6 +7,7 @@ import de.miaurizius.jgame2d.core.enums.GameState;
 import de.miaurizius.jgame2d.core.handlers.KeyHandler;
 import de.miaurizius.jgame2d.entity.item.ShieldWoodObj;
 import de.miaurizius.jgame2d.entity.item.SwordNormalObj;
+import de.miaurizius.jgame2d.entity.projectile.FireballObj;
 
 import java.awt.*;
 import java.util.ArrayList;
@@ -106,6 +107,12 @@ public class Player extends Entity {
             }
         }
 
+        if(panel.keyH.shotKeyPressed && !projectile.alive) {
+            projectile.set(worldX, worldY, direction, true, this);
+            panel.projectileList.add(projectile);
+            panel.playSE(10);
+        }
+
         // INVINCIBLE COUNTER
         if(!invincible) return;
         invincibleCount++;
@@ -130,8 +137,7 @@ public class Player extends Entity {
 
     public void interactMonster(int index) {
         if(index == 999) return;
-        if(invincible) return;
-        if(panel.monster[index].dying || !panel.monster[index].alive) return;
+        if(invincible || panel.monster[index].dying || !panel.monster[index].alive) return;
 
         int damage = panel.monster[index].attack - defense;
 
@@ -163,7 +169,7 @@ public class Player extends Entity {
             solidArea.height = attackArea.height;
 
             int monsterIndex = panel.collisionH.checkEntity(this, panel.monster);
-            damageMonster(monsterIndex);
+            damageMonster(monsterIndex, attack);
 
             worldX = currentWorldX;
             worldY = currentWorldY;
@@ -177,7 +183,7 @@ public class Player extends Entity {
             attacking = false;
         }
     }
-    public void damageMonster(int index) {
+    public void damageMonster(int index, int attack) {
         if(index == 999) return;
         if(panel.monster[index].invincible) return;
 
@@ -262,6 +268,7 @@ public class Player extends Entity {
         coins = 0;
         currentWeapon = new SwordNormalObj(panel);
         currentShield = new ShieldWoodObj(panel);
+        projectile = new FireballObj(panel);
         attack = getAttack();
         defense = getDefense();