added particles

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

@@ -52,6 +52,7 @@ public class GamePanel extends JPanel implements Runnable {
     public Entity[] monster = new Entity[20];
     public InteractiveTile[] iTile = new InteractiveTile[50];
     public ArrayList<Entity> projectileList = new ArrayList<>();
+    public ArrayList<Entity> particleList = new ArrayList<>();
     ArrayList<Entity> entityList = new ArrayList<>();
 
     // GAME STATE
@@ -122,6 +123,13 @@ public class GamePanel extends JPanel implements Runnable {
                         else projectileList.remove(i);
                     }
                 }
+                for(int i = 0; i < particleList.size(); i++) {
+                    Entity m = particleList.get(i);
+                    if(m != null) {
+                        if(m.alive) m.update();
+                        else particleList.remove(i);
+                    }
+                }
                 for(Entity entity : iTile) if(entity != null) entity.update();
                 break;
             case PAUSE:
@@ -152,6 +160,7 @@ public class GamePanel extends JPanel implements Runnable {
         for(Entity entity : obj) if(entity != null) entityList.add(entity);
         for(Entity entity : monster) if(entity != null) entityList.add(entity);
         for(Entity entity : projectileList) if(entity != null) entityList.add(entity);
+        for(Entity entity : particleList) if(entity != null) entityList.add(entity);
         entityList.sort(Comparator.comparingInt(o -> o.worldY));
         for(Entity entity : entityList) entity.draw(graphics2d);
         entityList.clear();

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.entity.particle.Particle;
 import de.miaurizius.jgame2d.entity.projectile.Projectile;
 
 import javax.imageio.ImageIO;
@@ -214,6 +215,35 @@ public class Entity {
         }
     }
 
+    // PARTICLE SETUP
+    public Color getParticleColor() {
+        return null;
+    }
+    public int getParticleSize() {
+        return -1;
+    }
+    public int getParticleSpeed() {
+        return -1;
+    }
+    public int getParticleMaxLife() {
+        return -1;
+    }
+    public void generateParticle(Entity generator, Entity target) {
+        Color color = generator.getParticleColor();
+        int size = generator.getParticleSize();
+        int speed = generator.getParticleSpeed();
+        int maxLife = generator.getParticleMaxLife();
+
+        Particle p1 = new Particle(panel, generator, color, size, speed, maxLife, -2, -1);
+        Particle p2 = new Particle(panel, generator, color, size, speed, maxLife, 2, -1);
+        Particle p3 = new Particle(panel, generator, color, size, speed, maxLife, -2, 1);
+        Particle p4 = new Particle(panel, generator, color, size, speed, maxLife, 2, 1);
+        panel.particleList.add(p1);
+        panel.particleList.add(p2);
+        panel.particleList.add(p3);
+        panel.particleList.add(p4);
+    }
+
     // SETTING THINGS UP
     BufferedImage parseSprite() {
         return switch (direction) {

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

@@ -225,6 +225,7 @@ public class Player extends Entity {
         panel.iTile[index].playSE();
         panel.iTile[index].life--;
         panel.iTile[index].invincible = true;
+        generateParticle(panel.iTile[index], panel.iTile[index]);
         if(panel.iTile[index].life == 0) panel.iTile[index] = panel.iTile[index].getDestroyedForm();
     }
 

src/de/miaurizius/jgame2d/entity/particle/Particle.java

@@ -0,0 +1,50 @@
+package de.miaurizius.jgame2d.entity.particle;
+
+import de.miaurizius.jgame2d.core.GamePanel;
+import de.miaurizius.jgame2d.entity.Entity;
+
+import java.awt.*;
+
+public class Particle extends Entity {
+
+    GamePanel panel;
+    Entity generator;
+    Color color;
+    int size;
+    int xd, yd;
+
+    public Particle(GamePanel panel, Entity generator, Color color, int size, int speed, int maxLife, int xd, int yd) {
+        super(panel);
+        this.panel = panel;
+        this.generator = generator;
+        this.color = color;
+        this.size = size;
+        this.speed = speed;
+        this.maxLife = maxLife;
+        this.xd = xd;
+        this.yd = yd;
+
+        life = maxLife;
+        int offset = (panel.tileSize/2) - (size/2);
+        worldX = generator.worldX + offset;
+        worldY = generator.worldY + offset;
+    }
+
+    @Override
+    public void update() {
+        life--;
+        if(life < maxLife/3) yd++;
+        worldX += xd*speed;
+        worldY += yd*speed;
+        alive = (life != 0);
+    }
+
+    @Override
+    public void draw(Graphics2D graphics2d) {
+        int screenX = worldX - panel.player.worldX + panel.player.screenX;
+        int screenY = worldY - panel.player.worldY + panel.player.screenY;
+
+        graphics2d.setColor(color);
+        graphics2d.fillRect(screenX, screenY, size, size);
+    }
+}

src/de/miaurizius/jgame2d/tile/interactive/DryTreeTI.java

@@ -4,6 +4,8 @@ import de.miaurizius.jgame2d.core.GamePanel;
 import de.miaurizius.jgame2d.core.enums.EntityType;
 import de.miaurizius.jgame2d.entity.Entity;
 
+import java.awt.*;
+
 public class DryTreeTI extends InteractiveTile{
 
     GamePanel panel;
@@ -31,4 +33,16 @@ public class DryTreeTI extends InteractiveTile{
     public InteractiveTile getDestroyedForm() {
         return new TrunkIT(panel, worldX/panel.tileSize, worldY/panel.tileSize);
     }
+    public Color getParticleColor() {
+        return new Color(65, 50,30);
+    }
+    public int getParticleSize() {
+        return 6; //in pixels
+    }
+    public int getParticleSpeed() {
+        return 1;
+    }
+    public int getParticleMaxLife() {
+        return 20;
+    }
 }

src/de/miaurizius/jgame2d/tile/interactive/InteractiveTile.java

@@ -1,8 +1,12 @@
 package de.miaurizius.jgame2d.tile.interactive;
 
 import de.miaurizius.jgame2d.core.GamePanel;
+import de.miaurizius.jgame2d.core.enums.Direction;
+import de.miaurizius.jgame2d.core.enums.EntityType;
 import de.miaurizius.jgame2d.entity.Entity;
 
+import java.awt.*;
+
 public class InteractiveTile extends Entity {
 
     GamePanel panel;
@@ -14,6 +18,7 @@ public class InteractiveTile extends Entity {
     }
 
     // GENERAL
+    @Override
     public void update() {
         // INVINCIBLE COUNTER
         if(!invincible) return;
@@ -23,6 +28,20 @@ public class InteractiveTile extends Entity {
             invincibleCount = 0;
         }
     }
+    @Override
+    public void draw(Graphics2D graphics2D) {
+        int screenX = worldX - panel.player.worldX + panel.player.screenX;
+        int screenY = worldY - panel.player.worldY + panel.player.screenY;
+
+        if(worldX + panel.tileSize > panel.player.worldX - panel.player.screenX &&
+                worldX - panel.tileSize < panel.player.worldX + panel.player.screenX &&
+                worldY + panel.tileSize > panel.player.worldY - panel.player.screenY &&
+                worldY - panel.tileSize < panel.player.worldY + panel.player.screenY
+        ) {
+            graphics2D.drawImage(down1, screenX, screenY, null);
+        }
+
+    }
 
     // PRE-CONFIGURED
     public void playSE() {}