onClick, create platform.

[Raylin]

Why does this terminate LOVE and throw an exit code 134?

What this attempts to do is use the example and add the simple functionality of clicking somewhere on the screen and adding a platform.

Code: Select all

function fCon(a,b,coll)

end
function con(a,b,coll)
	player.onGround = true
end
function lCon(a,b,coll)

end
function result(a,b,coll)

end
function love.load()
	world = love.physics.newWorld(0,0,650,650)
	world:setCallbacks(fCon,con,lCon,result)
	world:setGravity(0,700)
	world:setMeter(64)
	bodies = {}
	shapes = {}
	bodies[0] = love.physics.newBody(world,650/2,625,0,0)
	shapes[0] = love.physics.newRectangleShape(bodies[0],0,0,650,50,0)
	bodies[1] = love.physics.newBody(world,650/2,650/2,15,0)
	shapes[1] = love.physics.newCircleShape(bodies[1],0,0,20)
	love.graphics.setBackgroundColor(104, 136, 248)
	love.graphics.setMode(650, 650, false, true, 0)
	player = {bodies[1],onGround=false}
end
function love.update(dt)
	world:update(dt)
	if love.keyboard.isDown("right") then --press the right arrow key to push the ball to the right
		bodies[1]:applyForce(400, 0)
	elseif love.keyboard.isDown("left") then --press the left arrow key to push the ball to the left
		bodies[1]:applyForce(-400, 0)
	end
	if love.keyboard.isDown("up") and player.onGround == true then
		bodies[1]:applyImpulse(0,-50,0,0)
		player.onGround = false
	end
	if love.mouse.isDown("l") then
		local x=#bodies+1
		bodies[x] = love.physics.newBody(world,love.mouse.getX(),love.mouse.getY(),0,0)
		shapes[x]= love.physics.newRectangleShape(bodies[x],0,0,3,1,0)
	end
end
function love.draw()
	local x1, y1, x2, y2, x3, y3, x4, y4 = shapes[0]:getBoundingBox()
	local boxwidth = x3 - x2
	local boxheight = y2 - y1
	love.graphics.setColor(72, 160, 14)
	love.graphics.rectangle("fill", bodies[0]:getX() - boxwidth/2, bodies[0]:getY() - boxheight/2, boxwidth, boxheight)
	love.graphics.setColor(193, 47, 14)
	love.graphics.circle("fill", bodies[1]:getX(), bodies[1]:getY(), shapes[1]:getRadius(), 20)
end

[tentus]

It's partly because you started your index at 0 for the bodies. Lua starts at 1.

It's mainly because the effective minimum size for a rectangle is determined by your meter. Try making a larger rectangle, like 6x6.

Also, the next step you'll want to loop through the bodies and draw them. As is, your physics rectangles will be invisible.

[Taehl]

Well, for starters, your code would create a new platform every single frame that the mouse button is held down, which can't be good. But I don't know much about love.physics, so there may be a problem there, too.

[Raylin]

I've remedied this and I'm afraid that I'm screwing up somewhere.
Hmm.

[BlackBulletIV]

It's partly because you started your index at 0 for the bodies. Lua starts at 1.

I can see the elements are initialised with keys (in this case 0 and 1), which would mean that there's no problem. If the keying is left to Lua, then the starting at 1 thing kicks in.

Unless of course you've already done this, I'd suggest moving the code to create a new platform into love.mousepressed and checking whether button == "l". This way you would only create platform on each mouse click.

Finally, aren't you meant to be drawing the bodies you create? In love.draw, you only draw the first 2 that you created. You'll probably need to loop through them, check what type a shape is using Shape:getType, and then react accordingly.