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Nickey



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6th January, 2010 at 16:45:00 -

I am a noob and trying my hand at making my first game. It is a space shooter with my spaceship always centred in the middle of the play area. I have made a minimap with enemy objects and everything is working fine and the scrolling is working - My problem is - when I reach the edge of my screen(map), my spaceship no longer stays centred, but moves right to the edge of the screen - How do I make the map always scroll (My spaceship always in the middle). You know - having the map kinda loop or wrapping itself around the play area.

Hope I am clear enough and hopefully you guys can help me out.

Thanx in advance


 
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6th January, 2010 at 16:51:34 -

you either need levels of a set length with an ending, or you need to scroll everything around the player and not actually move the player (in whatever direction the game scrolls, horizontal, vertical). if you move the environment you can have an infinite playfield, possibly randomly generating obstacles and enemies off screen and moving them towards the player.

 
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Nickey



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6th January, 2010 at 17:02:57 -

Thanks for the quick reply.

Moving the environment sounds exactly what I need. But I'm not sure how. Any tutorials you can recommend? Or a hint maybe?

 
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6th January, 2010 at 17:40:35 -

give each thing a speed. and always move it (horizontally or vertically, whichever direction the shooter is going) that ammount.

say if i have an object 'asteroid' and it has a horizontal speed of 3 stored in its alt value a.

always set X('asteroid') == X('asteroid') + alt value a('asteroid')

Edited by Cecilectomy

 
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Nickey



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6th January, 2010 at 18:11:40 -

Thank you.

I pretty much get it now. Although it seems like it will be one heck of a job if you intend on having loads of objects.
I will; however, give it a whirl, else I will just be content with having an end to the map.

 
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UrbanMonk

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6th January, 2010 at 19:26:05 -

There is another way to "fake" looping and still use scrolling.

Here's a little example:

http://www.jsoftgames.com/loopingplayfield.zip

 
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Silveraura

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6th January, 2010 at 21:28:31 -


Originally Posted by Nickey
Thank you.

I pretty much get it now. Although it seems like it will be one heck of a job if you intend on having loads of objects.
I will; however, give it a whirl, else I will just be content with having an end to the map.



Couldn't you put use behaviors and copy the behavior to each object you want to wrap?

 
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Nickey



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7th January, 2010 at 21:14:49 -

Thank you for all the replies and help.

As soon as I get to it, I will let you know what the outcome was.

 
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noPE

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7th January, 2010 at 23:46:36 -


Originally Posted by UrbanMonk
There is another way to "fake" looping and still use scrolling.

Here's a little example:

http://www.jsoftgames.com/loopingplayfield.zip

this assumes the exact same circumstances at the end of the map as the beginning (somewhat improbably when you are also dealing with enemies and other obstacles, not just fluid backdrops), otherwise it will have a teleporty effect (a kind of jerk when you loop back the the beginning).

Edited by Cecilectomy

 
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Nickey



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9th January, 2010 at 13:53:22 -

I have checked out the example of UrbanMonk, but the sequence of the objects does not work out quite well then - so far I will either stick with having an end to the map.

I just need to check out the last "fake" loop from Ebenezer Cecil

Thank you for all the replies.

Edited by Nickey

 
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Nickey



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9th January, 2010 at 13:58:51 -

Sorry Ebenezer Ceci, the link seems to be dead.

 
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noPE

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9th January, 2010 at 14:39:10 -

uhhh. no. that link was in a quote. it was urbanmonks link. i was just quoting him.

 
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