So I came up with this sketch this evening and thought I might share it and perhaps learn how I might optimize it.
It seems to work – most of the time – on my iPad 2. Not sure about the first generation device. I am using the DragMe class that @Simeon showed me a while back.
Edit: I should point out that for me the fun began when I wrote the checkDist() function – which now, more appropriately, could be renamed: jostle().
-- a Jostling Amusement
function setup()
displayMode(FULLSCREEN_NO_BUTTONS)
--displayMode(FULLSCREEN)
num=20
boxes={}
for i=1,num do
boxes[i]=DragMe()
end
end
function draw()
background(0)
for i=1,num do
boxes[i]:draw()
end
connect()
quiver()
checkDist()
end
function connect() --draw a line connecting box centers
for i=1,num-1 do
strokeWidth(3)
stroke(255)
line(boxes[i].pos.x,boxes[i].pos.y,boxes[i+1].pos.x,boxes[i+1].pos.y)
end
end
function quiver()
for i=1,num do
boxes[i].pos.x=boxes[i].pos.x + (math.sin(boxes[i].pos.x*5))
boxes[i].pos.y=boxes[i].pos.y + (math.sin(boxes[i].pos.y*5))
end
end
function checkDist()
for i=1,num do
for j=1,num do
if boxes[i] ~= boxes[j] then
distX=math.abs(boxes[i].pos.x - boxes[j].pos.x)
distY=math.abs(boxes[i].pos.y - boxes[j].pos.y)
while distX <= 100 and distY <= 100 do
boxes[i].pos.x=boxes[i].pos.x+math.random(-1,1)
boxes[j].pos.x=boxes[j].pos.x+math.random(-1,1)
boxes[i].pos.y=boxes[i].pos.y+math.random(-1,1)
boxes[j].pos.y=boxes[j].pos.y+math.random(-1,1)
distX=math.abs(boxes[i].pos.x - boxes[j].pos.x)
distY=math.abs(boxes[i].pos.y - boxes[j].pos.y)
end
end
end
end
end
function touched(touch)
for i=1,num do
boxes[i]:touched(touch)
end
end
-- DragMe
DragMe = class()
function DragMe:init()
self.pos = vec2(math.random(50,WIDTH-50),math.random(50,HEIGHT-50))
self.fill=color(math.random(255),math.random(255),math.random(255),255)
self.size=75 --math.random(25,100)
end
function DragMe:draw()
pushStyle()
fill(self.fill)
rectMode(CENTER)
rect(self.pos.x, self.pos.y, self.size, self.size)
popStyle()
end
function DragMe:hit(point)
if point.x > (self.pos.x - self.size/2) and
point.x < (self.pos.x + self.size/2) and
point.y > (self.pos.y - self.size/2) and
point.y < (self.pos.y + self.size/2) then
return true
end
return false
end
function DragMe:touched(touch)
if self:hit( vec2(touch.x, touch.y) ) and
touch.state == MOVING then
self.pos=self.pos+vec2(touch.deltaX,touch.deltaY)
end
end
