Discussions

Hello, I'm new in programming in greenfoot and I've encountered a problem when coding the collision method. When meeting an obstacle, my actor only phases through the upper part of the obstacle. These are my methods used to detect obstacles, respectively if the actor is on the ground: public void detectObstacole() { int dx = 0; int dy = 0; // checking for collision on the right side while (getOneObjectAtOffset(getImage().getWidth() / 2 + 1 + dx, 0, Platobstacole.class) != null) { dx--; } // checking for collision on the left side while (getOneObjectAtOffset(-getImage().getWidth() / 2 - 1 + dx, 0, Platobstacole.class) != null) { dx++; } // checking for collision on the top side while (getOneObjectAtOffset(0, -getImage().getHeight() / 2 - 1 + dy, Platobstacole.class) != null) { dy++; } // adjusting the position setLocation(getX() + dx, getY() + dy); } public boolean pePamant() { //checking whether the actor is on ground int x = getX(); int y = getY(); // checking for collision at current position if (isTouching(Platforme.class)) { return true; } setLocation(x, y + vitezaVerticala);// checking for collision at next position boolean onGround = false; if (isTouching(Platforme.class)) { onGround = true; } setLocation(x, y); // returns to former position return onGround; } As a note, the "Platforme" (which only includes platforms) class is a subclass of "Platobstacole" (which includes both platforms and obstacles).

I am creating a 2d platforming game, where if you hit the lava it sends to a death/lose screen. However, when this happens I cannot reset the world nor terminate the program, and I have to use task manager to close greenfoot and restart my computer before I can open it again. I am using and if to see if its touching the lava, then Greenfoot.setWorld(new dead()). In the method where the characters jumps there is a lot of addition and reseting of variables so I am wondering if thats why its crashing, or if there is something else I should do.