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AppGameKit Classic Chat / suspending a sprite

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kirtn14
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Posted: 29th Jan 2012 18:53
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i want to suspend a sprite in mid air for a few seconds and then let it fall, is this possible?

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baxslash
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Posted: 29th Jan 2012 19:35
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Yes just make it a dynamic physics sprite when you want it to fall and a static one when you want it to stay still.

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BatVink
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Posted: 29th Jan 2012 19:37
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SetSpritePhysicsOff( iSpriteIndex )
SetSpritePhysicsOn( iSpriteIndex )

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BatVink
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Posted: 29th Jan 2012 19:38
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Ninja'd - 2 solutions for the price of one, depending on whether you want it to interact or not.

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kirtn14
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Posted: 29th Jan 2012 20:02
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Can I do that on a timer because I want to make a times reaction like 1 every 10 seconds for example

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baxslash
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Posted: 29th Jan 2012 21:21 Edited at: 29th Jan 2012 21:27
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Yes, you can change the state of a sprite whenever you like.

EDIT: Just to add to the code slightly-
setSpritePhysicsOn(spriteID, 1) `the 1 makes a static sprite
setSpritePhysicsOn(spriteID, 2) `the 2 makes a dynamic sprite
setSpritePhysicsOn(spriteID, 3) `the 3 makes a kinematic sprite

Static doesn't move but other physics sprites will bounce off it (like a brick wall)
Kinematic can be given a velocity (speed) and other physics sprites will bounce off it (like a... moving brick wall)
Dynamic sprites will bounce off all other physics sprites (like a bouncy ball)

The properties of all physics such as mass (weight) and restitution (bounciness) can be set using the various commands for physics sprites.

There will be an introduction to Physics sprites in this month's AppGameKit Bitesize tutorial in the February newsletter (out in a few days). It doesn't cover everything but it's a start.

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kirtn14
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Posted: 1st Feb 2012 09:10
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I need it on a mass scale so it suspends every physics command, if anyone knows that?

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baxslash
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Posted: 1st Feb 2012 09:54
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Yes, just use:
stepPhysics(0)

This will stop physics from being updated for ALL physics sprites for each loop it is called. What it effectively does is tell physics to update by zero seconds, when "sync()" is later called it does not automatically update the physics system as it sees it has already been done.

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BatVink
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Posted: 1st Feb 2012 12:14
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Any idea what happens when you restart? Does it continue where it left off, or do you get one huge chaotic explosion of activity due to the time difference between this step and the last?

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baxslash
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Posted: 1st Feb 2012 12:21
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There is no massive jump. I use this in my main project when I pause the game.

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kirtn14
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Posted: 3rd Feb 2012 21:07
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I've used I an it doesn't work it just continues why is this?

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kirtn14
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Posted: 3rd Feb 2012 21:18
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ive added it to this


and it wont work, am i missing somthing simple?

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baxslash
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Posted: 3rd Feb 2012 21:42
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You need to call it every loop, something like this:


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kirtn14
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Posted: 3rd Feb 2012 22:05
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:'o i idolise you!!!! how do i set it back to nomal? do i change the step physics to another number

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baxslash
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Posted: 3rd Feb 2012 22:15
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No just set PAUSE to zero. That way you don't call stepPhysics() and physics is progressed by the sync() command as usual.

Glad to help

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kirtn14
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Posted: 3rd Feb 2012 22:41
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[/code]
if GetPointerState()
x# = GetPointerX()
y# = GetPointerY()

if GetSpriteHit(x#, y#) = back
SetSpriteImage(back, backImg)
endif
endif

if GetPointerReleased()
x# = GetPointerX()
y# = GetPointerY()

if GetSpriteHit(x#, y#) = back
SetSpriteImage(back, backImg)
puase = 0
setspritecolor (back,0,0,0,0)
setspritesize (helppage,0,0)
setspriteposition (pausea,90,3)
pauseb = loadimage ("pause.png")
sprite = createsprite (pausea)
setspritesize (pauseb,10,10)
setspriteposition (pauseb,90,3)
setspriteposition (pausea,90,3)
setvirtualjoystickposition (1,90, 88)
endif
endif
[code]

would that be it because the sprite is still not moving

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baxslash
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Posted: 4th Feb 2012 00:42 Edited at: 4th Feb 2012 00:43
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Could you post something I can compile? It's quite hard to guess without the full code (or a working example)...

The code you have posted does not really give enough info.

EDIT: you have spelt pause wrong at this line;


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