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In this Discussion
How to draw debug for world:queryAABB, problem with world:queryAABB
problem again
i used shape to draw area of querry, but I found querry not work correctly, it only works when the object in the center area and querry not work with objects at the edge, sometime all is nothing
i used shape to draw area of querry, but I found querry not work correctly, it only works when the object in the center area and querry not work with objects at the edge, sometime all is nothing
Comments
http://docs.giderosmobile.com/reference/physics/b2DebugDraw#b2.DebugDraw
I tried to create a body in within the area querry and I do not get it in the fixtures list. Seems querryAABB works very unstable.
When area of querying is larger more I get number of fixture less or nothing.
So recheck your number, queryAABB usually works quite decently, can't tell the same about RayCasting though
combo1 = {attackOffsetX = 10, attackOffsetY = 8, attackWidth = 60, attackHeight = 70} ,
combo2 = {attackOffsetX = 10, attackOffsetY = 8, attackWidth = 38, attackHeight = 36}
attackRect = combo1
local startX = self.posX + attackRect.attackOffsetX
local startY = self.posY + attackRect.attackOffsetY
if self.attackDir == -1 then
startX = self.posX- attackRect.attackOffsetX - attackRect.attackWidth
end
local fixtures = self.map.b2world:queryAABB(startX, startY, startX + attackRect.attackWidth, startY - attackRect.attackHeight)
--print(self.posX,self.posY,startX, startY, startX + attackRect.attackWidth, startY - attackRect.attackHeight)
--------------------
local shape = Shape.new()
shape:clear()
shape:beginPath()
shape:setFillStyle(Shape.SOLID, 0x9a5c78)
shape:moveTo(startX,startY)
shape:lineTo(startX + attackRect.attackWidth,startY)
shape:lineTo(startX + attackRect.attackWidth, startY - attackRect.attackHeight)
shape:lineTo(startX, startY - attackRect.attackHeight)
shape:endPath()
self.map:addChild(shape)
Timer.delayedCall(500,function()
shape:removeFromParent()
shape:clear()
shape = nil
end)
startY - attackRect.attackHeight ?
if it makes it lower than startY then you have the same problem as me.
in Gideros Documentation:
(table) = b2.World:queryAABB(lowerx, lowery, upperx, uppery)
Parameters:
lowerx: (number) the lower x coordinate of the query box
lowery: (number) the lower y coordinate of the query box
upperx: (number) the upper x coordinate of the query box
uppery: (number) the upper y coordinate of the query box
and in case it is same sand clock, shape will draw shapes such.
As in lower bound and upper bound
So you can read it as:
minx: (number) the minimal x coordinate of the query box
miny: (number) the minimal y coordinate of the query box
maxx: (number) the maximal x coordinate of the query box
maxy: (number) the maximal y coordinate of the query box
Just try changing it and see if there is any differences
Likes: DungDajHjep
Likes: DungDajHjep