I make a car that consist from several bodies, suspensions(distance and line joints) and motors added in one compound. In game process suspensions can be broken down and I need to reset the level. So I clear space and rebuild level. But here we go! If all bodies is sleep before clearing, I get null-errors sometimes , sometimes I get "assert("+"cbsets.empty()"+") :: "+("space cleared, called setmanager clear(), and tree was non-empty. wuh" and other asserts (with NAPE_ASSERT flag).
I tried to isolate error and make a demo. I have two bodies added into one compound and this compound added into space. After the bodies were asleep I clearing space and adding compound to it again. And I got the error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at zpp_nape.space::ZPP_DynAABBPhase/broadphase()[C:\HaxeToolkit\nape\2,0,16\zpp_nape\space\DynAABBPhase.hx:1841]
at zpp_nape.space::ZPP_Space/step()[C:\HaxeToolkit\nape\2,0,16\zpp_nape\space\Space.hx:3029]
at nape.space::Space/step()[C:\HaxeToolkit\nape\2,0,16\nape\space\Space.hx:508]
at Main/onFrame()[C:\prog_projs\haxe\Openfl_Bug_fixes\NapeSpaceClearBugDemo\src\Main.hx:227]
If I clear the space before the bodies were asleep no errors is happening.
And if I make compound.space = null before space.clear() no errors is happening.
Sample code:
function init()
{
space = new Space(Vec2.weak(0, 450));
debug = new ShapeDebug(stage.stageWidth, stage.stageHeight);
debug.drawBodies = true;
debug.drawConstraints = true;
this.addChild(debug.display);
compound = new Compound();
stage.addEventListener(Event.ENTER_FRAME, onFrame);
stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
}
private function onKeyUp(e:KeyboardEvent):Void
{
if (e.keyCode == Keyboard.NUMBER_3)
compound.space = null;
space.clear();
space.gravity.setxy(0, 450);
var w = stage.stageWidth;
var h = stage.stageHeight;
createRectBody(0, 0, 1, h, BodyType.STATIC).space = space; // left
createRectBody(0, 0, w, 1, BodyType.STATIC).space = space; // top
createRectBody(w, 0, 1, h, BodyType.STATIC).space = space; // right
createRectBody(0, h, w, 1, BodyType.STATIC).space = space; // bottom
if (e.keyCode == Keyboard.NUMBER_1)
{
compound = new Compound();
var body = createRectBody(w / 2, h / 2, 50, 50, BodyType.DYNAMIC).align();
body.compound = compound;
var wheel = createRectBody(w / 2, h / 2+60, 40, 40, BodyType.DYNAMIC).align();
wheel.compound = compound;
compound.space = space;
}
else if (e.keyCode == Keyboard.NUMBER_2 || e.keyCode == Keyboard.NUMBER_3)
{
compound.space = space;
compound.translate(Vec2.weak(0, -50));
}
}
function createRectBody(x:Float, y:Float, w:Float, h:Float, type:BodyType):Body
{
var body = new Body(type);
body.shapes.push(new Polygon(Polygon.rect(x, y, w, h, true)));
return body;
}
private function onFrame(e:Event):Void
{
space.step(1 / 60, 25, 25);
debug.clear();
debug.draw(space);
debug.flush();
}
Press 1 to create objects, press 2 after the bodies were asleep to simulate error, and press 3 to avoid error.
And maybe I don't understand how the compound works? And it is normal that I need to manually iterate over all compounds in the space to set their space property to null ?
I make a car that consist from several bodies, suspensions(distance and line joints) and motors added in one compound. In game process suspensions can be broken down and I need to reset the level. So I clear space and rebuild level. But here we go! If all bodies is sleep before clearing, I get null-errors sometimes , sometimes I get
"assert("+"cbsets.empty()"+") :: "+("space cleared, called setmanager clear(), and tree was non-empty. wuh"
and other asserts (withNAPE_ASSERT
flag).I tried to isolate error and make a demo. I have two bodies added into one compound and this compound added into space. After the bodies were asleep I clearing space and adding compound to it again. And I got the error:
If I clear the space before the bodies were asleep no errors is happening. And if I make
compound.space = null
beforespace.clear()
no errors is happening.Sample code:
Press 1 to create objects, press 2 after the bodies were asleep to simulate error, and press 3 to avoid error.
And maybe I don't understand how the compound works? And it is normal that I need to manually iterate over all compounds in the space to set their space property to null ?
PS: sorry for my English.