added trading system

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

@@ -462,7 +462,46 @@ public class UI {
         }
     }
     private void tradeSell() {
+        drawInventory(panel.player, true);
+        int x, y, width, height;
 
+        // HINT WINDOW
+        x = panel.tileSize*2;
+        y = panel.tileSize*9;
+        width = panel.tileSize*6;
+        height = panel.tileSize*2;
+        drawSubWindow(x, y, width, height);
+        graphics2d.drawString("[ESC] Back", x+panel.tileSize, y+60);
+
+        // PLAYER COINS
+        x = panel.tileSize*12;
+        drawSubWindow(x, y, width, height);
+        graphics2d.drawString("Your Coins: " + panel.player.coins, x+panel.tileSize, y+60);
+
+        // PRICE WINDOW
+        int itemIndex = getItemIndex(playerSlotCol, playerSlotRow);
+        if(itemIndex < panel.player.inventory.size()) {
+            x = (int)(panel.tileSize*15.5);
+            y = (int)(panel.tileSize*5.5);
+            width = (int)(panel.tileSize*2.5);
+            height = panel.tileSize;
+            drawSubWindow(x, y, width, height);
+            graphics2d.drawImage(coin, x+10, y+8, 32, 32, null);
+            String price = String.valueOf(panel.player.inventory.get(itemIndex).price/2);
+            graphics2d.drawString(price, getAlignedToRightX(price, panel.tileSize*18-20), y+34);
+
+            // SELL
+            if(!panel.keyH.spacePressed) return;
+            if(panel.player.inventory.get(itemIndex) == panel.player.currentWeapon || panel.player.inventory.get(itemIndex) == panel.player.currentShield) {
+                commandNum = 0;
+                tradeState = TradeState.SELECT;
+                panel.gameState = GameState.DIALOGUE;
+                currentDialogue = "You cannot sell an equipped item!";
+                return;
+            }
+            panel.player.inventory.remove(itemIndex);
+            panel.player.coins += Integer.parseInt(price);
+        }
     }
 
     // UTILITY

src/de/miaurizius/jgame2d/core/handlers/KeyHandler.java

@@ -176,6 +176,10 @@ public class KeyHandler implements KeyListener {
             npcInventory(code);
             if(code == KeyEvent.VK_ESCAPE) panel.ui.tradeState = UI.TradeState.SELECT;
         }
+        if(panel.ui.tradeState == UI.TradeState.SELL) {
+            playerInventory(code);
+            if(code == KeyEvent.VK_ESCAPE) panel.ui.tradeState = UI.TradeState.SELECT;
+        }
     }
 
     // UTILITY