Pooling objects with Ignition X
Monkey Forums/Monkey Beginners/Pooling objects with Ignition X
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| Hi, I'm pretty new with Monkey and only recently purchased Ignition X and I'm loving both of them. I've been experimenting with pooling objects to try get my head around it as I would find this a useful feature. I put together the following code, based on the examples, which generates a runtime error 'TypeError t_s is null' when the pool is used up. I would expect it to stop when the pool is empty like the Ignition examples? [CODEBOX] Strict ' Experiment to get pooling function working ' it will create a pool of squares and draw where mouse clicks Import playniax.ignitionx.engine Import pooledSquareClass Global gameScene:Game Class Game Extends iEngine Field square:squarePool = New squarePool Field playfield:iPlayfield Field layer:iLayer Method OnCreate:Int() playfield = New iPlayfield playfield.AttachLast Self layer = New iLayer layer.AttachLast playfield square.MakePool(10) Return 0 End Method OnUpdate:Int() If TouchDown() square.MakeSquare(playfield.MouseX(), playfield.MouseY(), layer) Return 0 End End Class MyApp Extends iApp Method OnCreate:Int() gameScene=New Game iStart 60 Return 0 End End Function Main:Int() New MyApp Return 0 End [/CODEBOX] [CODEBOX] Strict ' creates a pool of squares Import playniax.ignitionx.engine Class squarePool Field squares:iPool Method MakePool:Int(poolSize_:Int) squares = New iPool(poolSize_) For Local i:= 0 To squares.Length-1 Local square:= New iLayerRectangle square.Size(30, 30) squares.Allocate square Next Return 0 End Method MakeSquare:Int(x_:float, y_:float, layer_:iLayer) Local s:= iLayerRectangle(squares.GetAvailable()) s.AttachLast layer_ s.Position(x_, y_) Return 0 End End [/CODEBOX] Can anyone explain where I went wrong? |
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| Figured it out: [CODE] Method MakeSquare:Int(x_:float, y_:float, layer_:iLayer) Local s:= iLayerRectangle(squares.GetAvailable()) If s Then s.AttachLast layer_ s.Position(x_, y_) EndIf Return 0 End [/CODE] Silly mistake:( |
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| okay :) |
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| Been playing around with this for a while now that I got it running and have a couple of questions if you don't mind. I've got that once the Alpha property reaches zero the pooled object is available again, is there any other ways for them to become available without disabling them all, or maybe overwrite one? What does the Ghost property do? I didn't notice any difference when i set it. Thanks, Chris |
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| I've got that once the Alpha property reaches zero the pooled object is available again This is with particles. When alpha is zero the objects is disabled or removed depending on Tattoo flag set or not. So it will be available again when it is disabled. What does the Ghost property do? I assume your are talking about the sprite Ghost flag? This flag is used by the collision system. By default the ghost colors are set to 255 so nothing will show. To change the colors you can do something like this: sprite.GhostRed=255 sprite.GhostGreen=0 sprite.GhostBlue=0 Now the sprite will be red for one frame when a collision happens creating a flicker. You can also set a ghost image by using GhostImagePointer. |
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| Okay thanks, I'm getting more familiar with it each day, I'm impressed so far and still scratching the surface. |
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| Thanks! Great to hear... |
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