I am working on a project using pymunk and pygame. I am using PivotJoint constraints to attach my bodies together. I would like to make the joints invisible if possible - is there any way to do this? Right now the joints appear purple in pygame and I don't seem to be able to change their color.
Thanks!
Yes, you can disable drawing of constraints by setting the flags property on the SpaceDebugDrawOptions object to only include shapes, or if you prefer include both shapes and collisions: http://www.pymunk.org/en/latest/pymunk.html#pymunk.SpaceDebugDrawOptions.flags
in this way to draw only shapes
options = pymunk.pygame_util.DrawOptions(screen)
options.flags = pymunk.SpaceDebugDrawOptions.DRAW_SHAPES
or like this to draw both shapes and collisions
options = pymunk.pygame_util.DrawOptions(screen)
options.flags = pymunk.SpaceDebugDrawOptions.DRAW_SHAPES | pymunk.SpaceDebugDrawOptions.DRAW_COLLISION_POINTS
Related
Is there a way to add a blur filter to a linestyle? Such as
var myBlurFilter:BlurFilter = new BlurFilter();
something.graphics.linestyle().filters = {myBlurFilter};
obviously this would not work, but is there a way to make it work? Perhaps a different method.
Filters is a property of DisplayObject. Hence you should add the filter to your something object. Which means you should separate the line with the blur in different object and add filter to it, leaving other graphic not blurred :)
Cheers!
I am creating a fighting game. I've got a spritesheet for the hero and a spritesheet for a monster. Since both will be able to do multiple attacks I would like to avoid to merge them in a single spritesheet. And I am intending to create more characters.
Now I am creating a SpriteBatchNode for each spritesheet and add them to layer.
CCLayer* stage = CCLayer::create();
CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("character_hero.plist");
this->characterHeroBatchNode = CCSpriteBatchNode::create("character_hero.pvr.ccz");
CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("character_monster.plist");
this->characterMonsterBatchNode = CCSpriteBatchNode::create("character_monster.pvr.ccz");
stage->addChild(characterHeroBatchNode);
stage->addChild(characterMonsterBatchNode);
Now I have one sprite in characterHeroBatchNode and multiple in characterMonsterBatchNode.
How can I reorder the monsters and the heros z-Order based on their PositionY attribute.
For example>
monster1->setPositionY(10); // In monster batch node
hero->setPositionY(24); // In hero batch node
monster2->setPositionY(43); // In monster batch node
I want the monster 1 behind the hero. And the hero behind monster2.
In the past, I've had to create games where I wanted some sprites in the foreground and others in the background. The sprites were in different sheets, like you have them.
To get them in the order I wanted, I put the "front" sprites into one CCLayer and the "back" sprites into another CCLayer. I added the layers to the scene in the order I wanted them to appear. I also manipulated each the respective layers to make them fade in/out as needed. So you could have the hero in the scene and then have the enemies appear behind him.
If you want to mix and match, you can have 3 layers, one for the "middle ground", one for "front", and one for "back", and dynamically move the sprites between the layers.
Was this what you were looking for?
If I understand what you're asking, the answer is, you can't. Consider each CCSpriteBatchNode to be its own container. You can adjust the Z order of the sprites inside the CCSpriteBatchNode, but when you add the batch to the CCLayer the whole CCSpriteBatchNode is applied to the CCLayer in whatever Z order you added it at. So in order to do what you want you would need another batch of monsters. Or use CCSprites and add/adjust them on the CCLayer in the way you want, but then you obviously lose the CCSpriteBatchNode benefits.
I have myself a movieclip that has multiple images in, I want to be able to use AS3
to change the Hue and Saturation so the client can choose a colour and it will change the colour of the movieclip to their settings.
I have tried this
var my_color:ColorTransform = new ColorTransform();
my_color.color = 0x550000;
tempPlayer.transform.colorTransform = my_color;
But the movieclip just becomes completely red, I just want to be able to add a touch of colour, and then make the colour stand out a bit using AS3. Basically something like this
but from grey to one colour
Canvas
For saturation it gets a little more complicated than the traditional ColorTransform. Often, you will need to use ColorMatrixFilter.
This feature is quite complicated, but this blog post describes the process quite well and gives you code for a couple common effects.
That said, you can add just a little color to an object with ColorTransform by using the *Offset and *Multiplier properties like greenOffset and redMultiplier. This lets you offset the red, green or blue values a little to give different effects.
I'm trying to draw a path using HTML Canvas. It consists of several Bezier curves linked together. For some reason, I cannot draw the whole path and then stroke. Instead, I need to stroke for each Bezier curve. I'm using a light purple color as the stroke color, but at the intersection of the curves, I seem to get something like white instead of the light purple I expect. Like this (sorry I can't post an image since I'm new on Stack Overflow):
I'm using stroke style with opacity 1, so I believe it's not a transparency issue. So what might be causing this problem?
FYI, I'm drawing each Bezier curve with code like this, where a is the drawing context of the canvas, and this.bloom.c is something like "rgba(xxx,xxx,xxx,1)":
a.strokeStyle = this.bloom.c;
a.beginPath();
a.moveTo(e.x, e.y);
a.bezierCurveTo(c.x, c.y, b.x, b.y, d.x, d.y);
a.stroke();
Thanks very much!
Use the appropriate "blend modes" natively supported by HTML5 Canvas context for Composite Operations. In your case you may use 'source-over'
For example:
var context = document.getElementById('myCanvas').getContext('2d');
context.globalCompositeOperation = 'source-over';
See Compositing and Blending 1.0
source-atop
source-in
source-out
source-over
destination-atop
destination-in
destination-out
destination-over
lighter
xor
copy
Basically i have x circles represented as MovieClips.
They are all assigned the same base color (for example red).
They should all have a brightness property ranging from 0 to 1 (0 would be completely white and 1 completely red).
I would like the following properties for representing these circles on stage:
When the circles dont overlap they are represented as stated above.
When the circles overlap the overlapping region should have the same base color as the original circles but the brightness of that area should be the sum of the brightnesses of all the circles that define the overlap.
The brightness saturates at 1. So the overlap of 2 circles with brightness 0.8 is 1 (the maximum value) instead of 1.6.
I am wondering if there is some kind of BitmapFilter i could use on the circles to achieve these properties? Or am I looking in the wrong place?
I am relatively new to Actionscript so any pointers are welcome!
Hi and welcome to SO and AS3!
I'll take each point separately:
1) Quite simple, you've probably already figured out that "addChild()" will add MovieClip objects to the Display List, meaning Flash will render them every frame.
2) The easiest way to do this is through "Blend Modes", which is Adobe's way of handling overlapping display objects.
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/DisplayObject.html#blendMode
Try setting the .blendMode property of each circle to BlendMode.ADD:
var circle:MovieClip = new MovieClip();
circle.blendMode = BlendMode.ADD;
3) If BlendMode.ADD doesn't give you the results you want, try creating a custom shader to do the job.
http://help.adobe.com/en_US/as3/dev/WSB19E965E-CCD2-4174-8077-8E5D0141A4A8.html
IMHO Blendmode is the easiest way of achieving the desired effect, and blendShader if you want precise customization. Please comment if you have further questions!
Some tutorials and examples:
http://www.learningactionscript3.com/2007/11/03/more-properties-blendmodes-filters/
http://active.tutsplus.com/tutorials/games/introducing-blend-modes-in-flash/
Cheers,
J