added notifications and added leveling system

src/de/miaurizius/jgame2d/core/UI.java

@@ -6,6 +6,7 @@ import de.miaurizius.jgame2d.entity.item.HeartObj;
 
 import java.awt.*;
 import java.awt.image.BufferedImage;
+import java.util.ArrayList;
 
 public class UI {
 
@@ -13,6 +14,8 @@ public class UI {
     Graphics2D graphics2d;
     Font arial_40, arial_80B; //TODO: Custom font loader: https://www.youtube.com/watch?v=g-wrebFVP3E
     BufferedImage heart_full, heart_half, heart_blank;
+    ArrayList<String> messages = new ArrayList<>();
+    ArrayList<Integer> messageCounter = new ArrayList<>();
     public String currentDialogue;
     public int commandNum;
 
@@ -36,14 +39,12 @@ public class UI {
         if(panel.gameState == null) return;
         switch (panel.gameState) {
             case GameState.PLAY:
-                drawPlayerLife();
+                drawPlayScreen();
                 break;
             case GameState.PAUSE:
-                drawPlayerLife();
                 drawPauseScreen();
                 break;
             case GameState.DIALOGUE:
-                drawPlayerLife();
                 drawDialogueScreen();
                 break;
             case TITLE:
@@ -81,15 +82,38 @@ public class UI {
             x += panel.tileSize;
         }
     }
+    public void drawMessages() {
+        int messageX = panel.tileSize;
+        int messageY = panel.tileSize*4;
+        graphics2d.setFont(graphics2d.getFont().deriveFont(Font.BOLD, 32F));
+
+        for(int i = 0; i < messages.size(); i++) {
+            if(messages.get(i) == null) return;
+
+            graphics2d.setColor(Color.black);
+            graphics2d.drawString(messages.get(i), messageX+2, messageY+2);
+            graphics2d.setColor(Color.white);
+            graphics2d.drawString(messages.get(i), messageX, messageY);
+
+            messageCounter.set(i, messageCounter.get(i) + 1);
+            messageY += 50;
+            if(messageCounter.get(i) > 180) {
+                messages.remove(i);
+                messageCounter.remove(i);
+            }
+        };
+    }
 
     // GAME STATES
     public void drawPauseScreen() {
+        drawPlayerLife();
         graphics2d.setFont(graphics2d.getFont().deriveFont(Font.PLAIN, 80));
         String text = "PAUSED";
         int y = panel.screenHeight / 2;
         graphics2d.drawString(text, getCenteredX(text), y);
     }
     public void drawDialogueScreen() {
+        drawPlayerLife();
         // WINDOW
         int x = panel.tileSize*2;
         int y = panel.tileSize/2;
@@ -191,6 +215,10 @@ public class UI {
         textY += panel.tileSize;
         graphics2d.drawImage(panel.player.currentShield.down1, tailX - panel.tileSize, textY-14, null);
     }
+    public void drawPlayScreen() {
+        drawPlayerLife();
+        drawMessages();
+    }
 
     // UTILITY
     public void drawSubWindow(int x, int y, int width, int height) {
@@ -206,5 +234,9 @@ public class UI {
     public int getAlignedToRightX(String text, int tailX) {
         return tailX - (int) graphics2d.getFontMetrics().getStringBounds(text, graphics2d).getWidth() / 2;
     }
+    public void addMessage(String text) {
+        messages.add(text);
+        messageCounter.add(0);
+    }
 
 }