Hi all, it’s me once again with questions. I wanted to see if anyone could help me on making a simple program that wherever you touch on the screen a rectangle appears. But I want each rectangle to be independent per se. As in they each have their own coordinates and can be identified individually amongst the others. I’m pretty sure that a class is the way to go (probably the only way) but I can’t seem to write one that works and I feel that it is my lack of “syntax knowledge” on how to use classes (if that makes sense) that’s making this more problematic.
I’ve written quite a number of posts on classes, and there are some good Lua class tutorials out there, too. I suggest you read everything you can find and try again.
@Perscirious Classes aren’t the only way to do what you want. Here’s an example that uses just a table to create rectangles where you touch a blank screen area. If you touch a rectangle, you can move it around.
displayMode(FULLSCREEN)
function setup()
rectMode(CENTER)
tab={}
end
function draw()
background(40, 40, 50)
fill(255)
for a,b in pairs(tab) do
rect(b.x,b.y,80,40)
end
end
function touched(t)
if t.state==BEGAN then
val=0
for a,b in pairs(tab) do
if t.x>b.x-40 and t.x<t.x+40 and t.y>b.y-20 and t.y<b.y+20 then
val=a
end
end
if val==0 then
table.insert(tab,vec2(t.x,t.y))
end
end
if t.state==MOVING and val>0 then
tab[val].x=t.x
tab[val].y=t.y
end
end
