added path finding algorithm

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

@@ -40,6 +40,7 @@ public class Entity {
     public boolean dying;
     public boolean hpBarOn;
     public boolean consumable;
+    public boolean onPath;
 
     // COUNTER
     public int spriteCounter;
@@ -86,15 +87,7 @@ public class Entity {
     // DEFAULT
     public void update() {
         setAction();
-        collisionOn = false;
-        panel.collisionH.checkTile(this);
-        panel.collisionH.checkObject(this, false);
-        panel.collisionH.checkEntity(this, panel.npc[panel.currentMap.getIndex()]);
-        panel.collisionH.checkEntity(this, panel.monster[panel.currentMap.getIndex()]);
-        panel.collisionH.checkEntity(this, panel.iTile[panel.currentMap.getIndex()]);
-        boolean contactPlayer = panel.collisionH.checkPlayer(this);
-
-        if(this.type == EntityType.MONSTER && contactPlayer) damagePlayer(attack);
+        checkCollision();
 
         if(!collisionOn) {
             switch (direction) {
@@ -207,6 +200,17 @@ public class Entity {
     } //If entity is consumable
     public void checkDrop() {
 
+    }
+    public void checkCollision() {
+        collisionOn = false;
+        panel.collisionH.checkTile(this);
+        panel.collisionH.checkObject(this, false);
+        panel.collisionH.checkEntity(this, panel.npc[panel.currentMap.getIndex()]);
+        panel.collisionH.checkEntity(this, panel.monster[panel.currentMap.getIndex()]);
+        panel.collisionH.checkEntity(this, panel.iTile[panel.currentMap.getIndex()]);
+        boolean contactPlayer = panel.collisionH.checkPlayer(this);
+
+        if(this.type == EntityType.MONSTER && contactPlayer) damagePlayer(attack);
     }
     public void dropItem(Entity droppedItem) {
         for(int i = 0; i < panel.obj[panel.currentMap.getIndex()].length; i++) {
@@ -284,5 +288,56 @@ public class Entity {
     public void changeOpacity(Graphics2D graphics2d, float opacity) {
         graphics2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity));
     }
+    public void searchPath(int goalCol, int goalRow) {
+        int startCol = (worldX + solidArea.x)/panel.tileSize;
+        int startRow = (worldY + solidArea.y)/panel.tileSize;
+
+        panel.pFinder.setNodes(startCol, startRow, goalCol, goalRow);
+        if(!panel.pFinder.search()) {
+            onPath = false;
+            return;
+        }
+        int nextX = panel.pFinder.pathList.getFirst().col * panel.tileSize;
+        int nextY = panel.pFinder.pathList.getFirst().row * panel.tileSize;
+
+        int enLeftX = worldX + solidArea.x;
+        int enRightX = worldX + solidArea.x + solidArea.width;
+        int enTopY = worldY + solidArea.y;
+        int enBottomY = worldY + solidArea.y + solidArea.height;
+
+        if(enTopY > nextY && enLeftX >= nextX && enRightX < nextX + panel.tileSize) direction = Direction.UP;
+        if(enTopY < nextY && enLeftX >= nextX && enRightX < nextX + panel.tileSize) direction = Direction.DOWN;
+        if(enTopY >= nextY && enBottomY < nextY + panel.tileSize) {
+            if(enLeftX > nextX) {
+                direction = Direction.LEFT;
+            } else if(enLeftX < nextX) {
+                direction = Direction.RIGHT;
+            }
+        }
+        if (enTopY > nextY && enLeftX > nextX) {
+            direction = Direction.UP;
+            checkCollision();
+            if(collision) direction = Direction.LEFT;
+        }
+        if(enTopY > nextY && enLeftX < nextX) {
+            direction = Direction.UP;
+            checkCollision();
+            if(collision) direction = Direction.RIGHT;
+        }
+        if(enTopY < nextY && enLeftX > nextX) {
+            direction = Direction.DOWN;
+            checkCollision();
+            if(collision) direction = Direction.LEFT;
+        }
+        if(enTopY < nextY && enLeftX < nextX) {
+            direction = Direction.DOWN;
+            checkCollision();
+            if(collision) direction = Direction.RIGHT;
+        }
+
+        int nextCol = panel.pFinder.pathList.getFirst().col;
+        int nextRow = panel.pFinder.pathList.getFirst().row;
+        if(nextCol == goalCol && nextRow == goalRow) onPath = false;
+    }
 
 }

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

@@ -18,9 +18,22 @@ public class OldManNPC extends Entity {
         speed = 1;
         getImage();
         setDialogue();
+
+        solidArea.x = 8;
+        solidArea.y = 16;
+        solidAreaDefaultX = solidArea.x;
+        solidAreaDefaultY = solidArea.y;
+        solidArea.width = 30;
+        solidArea.height = 30;
     }
 
     public void setAction() {
+
+        if(onPath) {
+            searchPath(12, 9);
+            return;
+        }
+
         actionLock++;
         if(actionLock != 120) return; //lock action for x frames
         Random rand = new Random();
@@ -30,6 +43,12 @@ public class OldManNPC extends Entity {
         if(i > 50 && i <= 75) direction = Direction.LEFT;
         if(i > 75) direction = Direction.RIGHT;
         actionLock = 0;
+
+    }
+    @Override
+    public void speak() {
+        super.speak();
+        super.onPath = true;
     }
 
     // SETTING THINGS UP