Discussions

I would first suggest not to have four different actors for one character. All you need to do is change the image of the character to one of the four images by using 'setImage' when a new direction is detected. As far as not being able to have your character change to a back sprite and move that way ... your 'charback' class would need posted as the problem is probably there. Please use the 'code' link below the 'Post a reply' box to insert your code into your future posts.

You can't. You can ask a mod or admin to, though (although it's not like leaving this post here is a big deal).

No need, fixed it :D

This is two settings: -Xincgc : use the incremental garbage collector, to try and reduce noticable pauses while Greenfoot is running -Dawt.useSystemAAFontSettings=on : forces text rendering to be anti-aliased. This is the one that seems to cause your problem, but it shouldn't. See here for documentation on this setting. If text is not anti-aliased, it generally looks much worse.

You need to provide what code you have so far (at least as far as the ball and its ground/object detection). However, for gravity: <Code Omitted>

Wow, you never cease to amaze me :-). I will work on the code in the days to come; first of all, I will implement vector movement (that will make (3) superfluous - this was a somewhat awkward way to simulate gravity, and I kept trying various values until I got fed up with it and left line 30 the way it was at that moment).

Have an invisible sensor object created for each enemy (this can be done in the constructor of the enemy class with an instance field in the class to hold the sensor) that it can use to detect obstacles in the line of sight. Have the enemy add the sensor object anywhere into the world in the 'addedToWorld' method. In act method, if player is in world, then do the following for checking line of sight: * place sensor halfway between player and enemy; * size width of sensor image to distance between player and enemy (height of sensor image should be two); * rotate the sensor to the angle b

hi guys am a student programmer please iwl need every pint of your advice in order to be grounded thank you all

ok

The writer has to include the source with the scenario, it it not always available. When they do include it, you will see a button on the right side that will say, "Open in Greenfoot" this will download the project file to your pc.

You may just have to use a different key. Maybe jump up to the next row of keys.

One thing that may be causing passage through ground objects is that when 'jump' is called 'fall' is executed; this is when you call 'checkKeys' from the 'act' method. However, you are calling 'fall' << again >> when you call 'checkFall' from the 'act' method. This will make your actor move double-speed when first leaving the ground.

I created a subclass to GreenfootImage that will resolve your issue. Check this out.