Camera problems on STLayerPanZoom

[paulocoutinhox]

Hi,

We have a great camera class STLayerPanZoom. But have some problems:

• Mouse scroll don't zoom out, variable _zoomWaitTimer freeze on same value
• Add support for joystick zoom (L1/L2 or R1/R2)
• There is a lot of comments/todos that need be checked
• When use with animated param = true, it break

Thanks.

[stevetranby]

One possible note is the PanZoomLayer (and STPanZoomLayer), when combined with the CameraManager class, is that the panning and zooming are all done through moving and scaling the root layer (the _panZoomLayer).

NOTES:

• SCALE_LARGE is a float value based on screen resolution compared to design resolution
• PanZoomLayer delegate receives callbacks for touches
• kCameraZoomInMap - game-specific value for default zoom
• kTagPanZoomLayer - tag for quick access to the specific layer
• setPositionZ(-3) and addChild( ... , -3) - these are related to rendering order, and are probably game-specific
• anchorpoint ZERO - this is personal preference, I prefer bottom-left origins for maps, whereas I prefer center or non-corner anchor/origin for sprites (to allow rotating about the anchor)

// MARK: Setup PanZoomLayer -

// Pan Zoom Touch
if(panZoomLayer) {
    panZoomLayer->removeFromParent();
}

// setup touch layer
{
    panZoomLayer = STLayerPanZoom::create();
    panZoomLayer->setPosition(Vec2::ZERO);
    panZoomLayer->setMinScale(.1f * SCALE_LARGE); 
    panZoomLayer->setMaxScale(2.f * SCALE_LARGE);
    panZoomLayer->setScale(kCameraZoomInMap * SCALE_LARGE);
    panZoomLayer->setDelegate(this);
    panZoomLayer->setAnchorPoint(Vec2::ZERO);
    panZoomLayer->setTag(kTagPanZoomLayer);
    panZoomLayer->setPositionZ(-3);
    addChild(panZoomLayer, -3);
}

// attach map
tileMap->setTag(kTagTileMap);

panZoomLayer->addChild(tileMap);