implement dialogue progression and text display for NPC interactions

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

@@ -28,6 +28,8 @@ public class UI {
     public int npcSlotCol, npcSlotRow;
     private int transCount;
     private int sleepCount;
+    private int charIndex;
+    private String combinedText;
 
     // SUB-STATES
     public TradeState tradeState = TradeState.SELECT;
@@ -294,6 +296,28 @@ public class UI {
         x += panel.tileSize;
         y += panel.tileSize;
 
+        if(tradingNPC.dialogue[tradingNPC.dialogueSet][tradingNPC.dialogueIndex] != null) {
+            currentDialogue = tradingNPC.dialogue[tradingNPC.dialogueSet][tradingNPC.dialogueIndex];
+            char[] characters = tradingNPC.dialogue[tradingNPC.dialogueSet][tradingNPC.dialogueIndex].toCharArray();
+            if(charIndex < characters.length) {
+                String s = String.valueOf(characters[charIndex]);
+                combinedText = combinedText + s;
+                currentDialogue = combinedText;
+                charIndex++;
+            }
+            if(panel.keyH.spacePressed) {
+                charIndex = 0;
+                combinedText = "";
+                if(panel.gameState == GameState.DIALOGUE) {
+                    tradingNPC.dialogueIndex++;
+                    panel.keyH.spacePressed = false;
+                }
+            }
+        } else {
+            tradingNPC.dialogueIndex = 0;
+            if(panel.gameState == GameState.DIALOGUE) panel.gameState = GameState.PLAY;
+        }
+
         for(String line : currentDialogue.split("\n")) {
             graphics2d.drawString(line, x, y);
             y += 40;
@@ -419,6 +443,7 @@ public class UI {
 
     // TRADING
     private void tradeSelect() {
+        tradingNPC.dialogueSet = 0;
         drawDialogueScreen();
 
         int x = panel.tileSize*15;
@@ -449,9 +474,8 @@ public class UI {
             graphics2d.drawString(">", x-panel.tileSize/2, y);
             if(panel.keyH.spacePressed) {
                 commandNum = 0;
+                tradingNPC.startDialogue(tradingNPC,1);
                 tradeState = TradeState.SELECT;
-                panel.gameState = GameState.DIALOGUE;
-                currentDialogue = "Come again, hehe!";
             }
         }
     }
@@ -488,9 +512,7 @@ public class UI {
             if(!panel.keyH.spacePressed) return;
             if(tradingNPC.inventory.get(itemIndex).price > panel.player.coins) {
                 tradeState = TradeState.SELECT;
-                panel.gameState = GameState.DIALOGUE;
+                tradingNPC.startDialogue(tradingNPC,2);
-                currentDialogue = "You need more coins to buy that!";
-                drawDialogueScreen();
                 return;
             }
             if(panel.player.canObtainItem(tradingNPC.inventory.get(itemIndex))) {
@@ -498,9 +520,7 @@ public class UI {
                 return;
             }
             tradeState = TradeState.SELECT;
-            panel.gameState = GameState.DIALOGUE;
+            tradingNPC.startDialogue(tradingNPC,3);
-            currentDialogue = "Your inventory is full!";
-            drawDialogueScreen();
         }
     }
     private void tradeSell() {
@@ -537,8 +557,7 @@ public class UI {
             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;
+                tradingNPC.startDialogue(tradingNPC,4);
-                currentDialogue = "You cannot sell an equipped item!";
                 return;
             }
             if(panel.player.inventory.get(itemIndex).amt <= 1) panel.player.inventory.remove(itemIndex);

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

@@ -14,6 +14,7 @@ public class EventHandler {
 
     GamePanel panel;
     EventRect[][][] eventRect;
+    Entity eventMaster; //Like a "voice of god"
     public int prevEventX, prevEventY;
     boolean canTouchEvent = true;
 
@@ -23,6 +24,7 @@ public class EventHandler {
 
     public EventHandler(GamePanel panel) {
         this.panel = panel;
+        eventMaster = new Entity(panel);
         eventRect = new EventRect[Map.values().length][panel.maxWorldCol][panel.maxWorldRow];
 
         int map = 0;
@@ -46,8 +48,14 @@ public class EventHandler {
                 }
             }
         }
+
+        setDialogue();
     }
 
+    public void setDialogue() {
+        eventMaster.dialogue[0][0] = "You have fallen into a pit!";
+        eventMaster.dialogue[1][0] = "You saved your progress!";
+    }
     public void checkEvent() {
         // Check if the player char is more than 1 tile away from the last event
         int xDistance = Math.abs(panel.player.worldX - prevEventX); //return absolute number
@@ -95,10 +103,9 @@ public class EventHandler {
     }
 
     private void damagePit() {
-        panel.gameState = GameState.DIALOGUE;
         panel.playSE(6);
-        panel.ui.currentDialogue = "You have fallen into a pit!";
         panel.player.life -= 1;
+        eventMaster.startDialogue(eventMaster,0);
         canTouchEvent = false;
     }
     private void healingPool() {
@@ -106,7 +113,7 @@ public class EventHandler {
         panel.gameState = GameState.DIALOGUE;
         panel.player.attackCancel = true;
         panel.playSE(2);
-        panel.ui.currentDialogue = "You saved your progress!";
+        eventMaster.startDialogue(eventMaster,1);
         //panel.player.life = panel.player.maxLife;
         canTouchEvent = false;
         panel.assetSetter.setMonster();

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

@@ -134,7 +134,7 @@ public class KeyHandler implements KeyListener {
     private void handleDialogue(int code) {
         // EXIT STATE
         if (code == KeyEvent.VK_SPACE) {
-            panel.gameState = GameState.PLAY;
+            spacePressed = true;
         }
     }
     private void handleCharacter(int code) {

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

@@ -5,6 +5,7 @@ import de.miaurizius.jgame2d.core.enums.Direction;
 import de.miaurizius.jgame2d.core.GamePanel;
 import de.miaurizius.jgame2d.core.Utility;
 import de.miaurizius.jgame2d.core.enums.EntityType;
+import de.miaurizius.jgame2d.core.enums.GameState;
 import de.miaurizius.jgame2d.entity.particle.Particle;
 import de.miaurizius.jgame2d.entity.projectile.Projectile;
 
@@ -30,13 +31,14 @@ public class Entity {
     public Entity attacker;
     public int solidAreaDefaultX,  solidAreaDefaultY;
     public boolean collision;
-    protected String[] dialogue = new String[20];
+    public String[][] dialogue = new String[20][20];
 
     // STATE
     public int worldX, worldY;
     public Direction direction = Direction.DOWN;
     public int spriteNum = 1;
-    int dialogueIndex;
+    public int dialogueSet;
+    public int dialogueIndex;
     public boolean collisionOn;
     public boolean invincible;
     public boolean transparent;
@@ -267,10 +269,9 @@ public class Entity {
         panel.player.invincible = true;
     }
     public void speak() {
-        if(dialogue[dialogueIndex] == null) dialogueIndex = 0;
-        panel.ui.currentDialogue = dialogue[dialogueIndex];
-        dialogueIndex++;
 
+    }
+    public void facePlayer() {
         switch(panel.player.direction) {
             case UP -> direction = Direction.DOWN;
             case DOWN -> direction = Direction.UP;
@@ -278,6 +279,11 @@ public class Entity {
             case RIGHT -> direction = Direction.LEFT;
         }
     }
+    public void startDialogue(Entity entity, int setNum) {
+        panel.gameState = GameState.DIALOGUE;
+        panel.ui.tradingNPC = entity;
+        dialogueSet = setNum;
+    }
     public void dyingAnimation(Graphics2D graphics2d) {
         dyingCount++;
         int incr = 5;

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

@@ -46,6 +46,7 @@ public class Player extends Entity {
         getPlayerImage();
         getPlayerAttackImage();
         getGuardImages();
+        setDialogue();
     }
 
     // DEFAULT
@@ -262,7 +263,6 @@ public class Player extends Entity {
         if(index == 999) return;
         //if(!panel.keyH.spacePressed) return; //Only uncomment if text should only appear if player hits space
         attackCancel = true;
-        panel.gameState = GameState.DIALOGUE;
         panel.npc[panel.currentMap.getIndex()][index].speak();
     }
     public void speak() {
@@ -281,9 +281,7 @@ public class Player extends Entity {
         attack = getAttack();
         defense = getDefense();
         panel.playSE(8);
-
+        startDialogue(this,0);
-        panel.gameState = GameState.DIALOGUE;
-        panel.ui.currentDialogue = "You are level " + level + " now!\nYou feel stronger!";
     }
     public void selectItem() {
         int itemIndex = panel.ui.getItemIndex(panel.ui.playerSlotCol, panel.ui.playerSlotRow);
@@ -363,6 +361,9 @@ public class Player extends Entity {
         inventory.add(currentShield);
         inventory.add(new KeyObj(panel));
     }
+    public void setDialogue() {
+        dialogue[0][0] = "You are level " + level + " now!\nYou feel stronger!";
+    }
     public int getAttack() {
         attackArea = currentWeapon.attackArea;
         return attack = strength * currentWeapon.attackValue;

src/de/miaurizius/jgame2d/entity/item/KeyObj.java

@@ -17,19 +17,25 @@ public class KeyObj extends Entity {
 
         price = 50;
         stackable = true;
+
+        setDialogue();
+    }
+
+    public void setDialogue() {
+        dialogue[0][0] = "What are you doing?\nThere is no door nearby.";
+        dialogue[1][0] = "You used a " + name + "!\nThe door is now open.";
     }
 
     @Override
     public boolean use(Entity entity) {
-        panel.gameState = GameState.DIALOGUE;
         int objIndex = getDetected(entity, panel.obj, "door");
         if(objIndex == 999) {
-            panel.ui.currentDialogue = "What are you doing?\nThere is no door nearby.";
+            startDialogue(this,0);
             return false;
         }
-        panel.ui.currentDialogue = "You used a " + name + "!\nThe door is now open.";
         panel.playSE(3);
         panel.obj[panel.currentMap.getIndex()][objIndex] = null;
+        startDialogue(this,1);
         return true;
     }
 

src/de/miaurizius/jgame2d/entity/item/PotionObj.java

@@ -22,12 +22,16 @@ public class PotionObj extends Entity {
 
         price = 50;
         stackable = true;
+
+        setDialogue();
+    }
+
+    public void setDialogue() {
+        dialogue[0][0] = "You drank a " + name + "!\nYour life has been recovered by " + value + ".";
     }
 
     public boolean use(Entity entity) {
-        panel.gameState = GameState.DIALOGUE;
+        startDialogue(this,0);
-        panel.ui.currentDialogue = "You drank a " + name + "!\n" +
-                "Your life has been recovered by " + value + ".";
         entity.life += value;
         if(panel.player.life > panel.player.maxLife) panel.player.life = panel.player.maxLife;
         panel.playSE(2);

src/de/miaurizius/jgame2d/entity/npc/MerchantNPC.java

@@ -23,7 +23,7 @@ public class MerchantNPC extends Entity {
 
     @Override
     public void speak() {
-        super.speak();
+        facePlayer();
         panel.gameState = GameState.TRADE;
         panel.ui.tradingNPC = this;
     }
@@ -40,7 +40,11 @@ public class MerchantNPC extends Entity {
         right2 = initEntitySprites("npc/merchant_down_2");
     }
     private void setDialogue() {
-        dialogue[0] = "He he, so you found me. \nI have some good stuff. \nDo you want to trade?";
+        dialogue[0][0] = "He he, so you found me. \nI have some good stuff. \nDo you want to trade?";
+        dialogue[1][0] = "Come again, hehe!";
+        dialogue[2][0] = "You need more coins to buy that!";
+        dialogue[3][0] = "Your inventory is full!";
+        dialogue[4][0] = "You cannot sell an equipped item!";
     }
     private void setItems() {
         inventory.add(new PotionObj(panel));

src/de/miaurizius/jgame2d/entity/npc/OldManNPC.java

@@ -20,6 +20,8 @@ public class OldManNPC extends Entity {
         getImage();
         setDialogue();
 
+        dialogueSet = -1;
+
         solidArea.x = 8;
         solidArea.y = 16;
         solidAreaDefaultX = solidArea.x;
@@ -48,8 +50,11 @@ public class OldManNPC extends Entity {
     }
     @Override
     public void speak() {
-        super.speak();
+        super.facePlayer();
-        super.onPath = true;
+        super.startDialogue(this,super.dialogueSet);
+        dialogueSet++;
+        if(dialogue[dialogueSet][0] == null) dialogueSet = 0;
+        // super.onPath = true;
     }
 
     // SETTING THINGS UP
@@ -64,10 +69,16 @@ public class OldManNPC extends Entity {
         right2 = initEntitySprites("npc/oldman_right_2");
     }
     private void setDialogue() {
-        dialogue[0] = "Hello, lad.";
+        dialogue[0][0] = "Hello, lad.";
-        dialogue[1] = "So you've come to this island to \nfind the treasure?";
+        dialogue[0][1] = "So you've come to this island to \nfind the treasure?";
-        dialogue[2] = "I used to be a great wizard but now... \nI'm a bit too old for taking an \nadventure.";
+        dialogue[0][2] = "I used to be a great wizard but now... \nI'm a bit too old for taking an \nadventure.";
-        dialogue[3] = "Well, good luck on you.";
+        dialogue[0][3] = "Well, good luck on you.";
-        dialogue[4] = "I heard drinking the water of the \nholy lake makes you feel fine again...";
+        dialogue[0][4] = "I heard drinking the water of the \nholy lake makes you feel fine again...";
+
+        dialogue[1][0] = "If you become tired, reset at the water.";
+        dialogue[1][1] = "However, the monsters reappear if you rest.\nI don't know why but that's how it works.";
+        dialogue[1][2] = "In any case, don't push yourself too hard.";
+
+        dialogue[2][0] = "I wonder how to open that door...";
     }
 }

src/de/miaurizius/jgame2d/entity/obstacle/ChestObj.java

@@ -28,31 +28,32 @@ public class ChestObj extends Entity {
         solidAreaDefaultY = solidArea.y;
     }
 
+    public void setDialogue() {
+        dialogue[0][0] = "You open the chest and find a " + loot.name + "!\nBut your inventory is full...";
+        dialogue[1][0] = "You open the chest and find a " + loot.name + "!\nYou obtain the " + loot.name + "!";
+        dialogue[2][0] = "It's already empty...";
+    }
+
     @Override
     public void setLoot(Entity loot) {
         this.loot = loot;
+        setDialogue();
     }
 
     @Override
     public void interact() {
-        panel.gameState = GameState.DIALOGUE;
-
         if(this.opened) {
-            panel.ui.currentDialogue = "It's already empty...";
+            startDialogue(this,2);
             return;
         }
         panel.playSE(3);
-        StringBuilder sb = new StringBuilder();
-        sb.append("You open the chest and find a ").append(loot.name).append("!");
         if(!panel.player.canObtainItem(loot)) {
-            sb.append("\nBut your inventory is full...");
+            startDialogue(this,0);
-            panel.ui.currentDialogue = sb.toString();
             return;
         }
-        sb.append("\nYou obtain the ").append(loot.name).append("!");
         down1 = image2;
         opened = true;
-        panel.ui.currentDialogue = sb.toString();
+        startDialogue(this,1);
     }
 
 }

src/de/miaurizius/jgame2d/entity/obstacle/DoorObj.java

@@ -23,12 +23,17 @@ public class DoorObj extends Entity {
         solidArea.height = 32;
         solidAreaDefaultX = solidArea.x;
         solidAreaDefaultY = solidArea.y;
+
+        setDialogue();
+    }
+
+    public void setDialogue() {
+        dialogue[0][0] = "You need a key to open this.";
     }
 
     @Override
     public void interact() {
-        panel.gameState = GameState.DIALOGUE;
+        startDialogue(this,0);
-        panel.ui.currentDialogue = "You need a key to open this.";
     }
 
 }