Computer Science Canada Moving the screen |
| Author: | Diablo117 [ Fri Jun 05, 2009 12:04 am ] |
| Post subject: | Moving the screen |
What is it you are trying to achieve? Moving the screen as my character moves in a 2D side scrolling shooter What is the problem you are having? It..doesnt move? Please specify what version of Turing you are using 4.0.5 |
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| Author: | shoobyman [ Fri Jun 05, 2009 12:42 am ] |
| Post subject: | Re: Moving the screen |
Well, your not going to be moving the screen. Instead, every background object will need to have an x and y location variable, and when u want the illusion of a moving screen, you just move the background scenery by changing the x and y variables (uniformly) |
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| Author: | saltpro15 [ Fri Jun 05, 2009 8:41 am ] |
| Post subject: | RE:Moving the screen |
I think the proper name for it is blitting. Like shoobyman said, you are going to need x and y position variables and use them to move your background. |
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| Author: | Diablo117 [ Fri Jun 05, 2009 8:00 pm ] |
| Post subject: | Re: Moving the screen |
Alright, so for something like this, I would create "spawn points" for my enemy objects to appear in every once in a while, and they would move to the left as required. When the player is at a certain area(past half-way of the screen) then all the objects move an additional position to the left? |
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| Author: | saltpro15 [ Fri Jun 05, 2009 8:17 pm ] |
| Post subject: | RE:Moving the screen |
that would work yes, as long as you remember to repeat your background so you don't have whitespace |
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| Author: | Diablo117 [ Fri Jun 05, 2009 10:19 pm ] |
| Post subject: | Re: Moving the screen |
Mmm, im thinking of making a tile-based background for easier collision detection but idk. |
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| Author: | PrimalDoom [ Thu Jun 11, 2009 9:25 pm ] |
| Post subject: | Re: Moving the screen |
The best way I've found to move the screen is to do this WinY = half of your screen along the Y axis WinX = half of your screen along the X axis Y = your players Y coordinate X = your players X coordinate WinMoveY = the location all players are moved to on the screen when you move. Your player is also affected by this. WinMoveY is added to the Y coordinate of everything that gets drawn on the screen. WinMoveX = the location all players are moved to on the screen when you move. Your player is also affected by this. WinMoveX is added to the Y coordinate of everything that gets drawn on the screen. if WinY - Y ~= 0 then WinMoveY := - Y + WinY end if if WinX - X ~= 0 then WinMoveX := - X + WinX end if or something like that any way i solved it in the game i was making, it's not done yet but it works and i haven't found any flaws with the game in terms of were this piece of code is concerned. |
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