LÖVE

Hi, I'm new and really enjoy trying making game with love but I have some problem :

I have a s table wich contains table which x,y coordinate for drawing rectangle when I click mousebutton. I can draw them all with ipairs loop (and it's working nice) but I want draw only the first one, how can I make it (i explored all the ways and it doesn't work), how can I access to x and y only on the first object ?

here is code :

s={}

function love.load()
end

function love.update(dt)
if love.mouse.isDown (1) then
newcoord= {x=love.mouse.getX(),y=love.mouse.getY()}
table.insert(s,newcoord)
end
end

function love.draw(dt)
--for i, v in ipairs(s) do
--love.graphics.rectangle( "line",v.x,v.y,1,1)
--end
end

Well, I found a way, deleting every other values in table :

for i, v in ipairs(s) do
table.remove(s,i+1)
love.graphics.rectangle( "line",v.x,v.y,love.mouse.getX()-v.x,love.mouse.getY()-v.y)

The goal was to make basic mouse rectangle selection, full code : (its working nice)

s={}

function love.load()
end

function love.update(dt)
if love.mouse.isDown (1) then
newsouris= {x=love.mouse.getX(),y=love.mouse.getY()}
table.insert(s,newsouris)
else
for i in ipairs (s) do
table.remove(s,i)
end
end
end

function love.draw(dt)
for i, v in ipairs(s) do
table.remove(s,i+1)
love.graphics.rectangle( "line",v.x,v.y,love.mouse.getX()-v.x,love.mouse.getY()-v.y)
end
end

But I would be grateful if someone can tell me how to access value in a table stored in other table directly without an ipairs loop.
Here for example I would like to print or use newsouris.x stored in table s{}, but I don't know the syntax.

After table.insert(s, newsouris), newsouris is now the last element in s. You can access the last element in s with: s[#s], so newsouris.x would be: s[#s].x. You either want that or the first one at s[1].x. Does that help? I might have misunderstood your question.

When you do : The result is :
What you want is :
So just do :

4vZEROv wrote: ↑Sun Mar 31, 2019 1:47 pm When you do :

Code: Select all

table.insert(s, newsouris)

The result is :

Code: Select all

 s = {newsouris = { x = x_coord, y = y_coord }}

This is wrong though, table.insert will insert whatever newsouris is as the "#s+1"-th element into s, so something like this is what would happen:

zorg wrote: ↑Sun Mar 31, 2019 7:35 pm

True, my bad, the error is similar tho. You have a table inside another table and you don't want that