LÖVE

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function love.load()
	love.physics.setMeter(64) --the height of a meter our worlds will be 64px
	world = love.physics.newWorld(0, 9.81*64, true) --create a world for the bodies to exist in with horizontal gravity of 0 and vertical gravity of 9.81

	objects = {} -- table to hold all our physical objects

	--let's create the ground
	objects.ground = {}
	objects.ground.body = love.physics.newBody(world, 650/2, 650-50/2) --remember, the shape (the rectangle we create next) anchors to the body from its center, so we have to move it to (650/2, 650-50/2)
	objects.ground.shape = love.physics.newRectangleShape(650, 50) --make a rectangle with a width of 650 and a height of 50
	objects.ground.fixture = love.physics.newFixture(objects.ground.body, objects.ground.shape); --attach shape to body

	--let's create a ball
	objects.ball = {}
	objects.ball.body = love.physics.newBody(world, 650/2, 650/2, "dynamic") --place the body in the center of the world and make it dynamic, so it can move around
	objects.ball.body:setMass(15) --give it a mass of 15
	objects.ball.shape = love.physics.newCircleShape(20) --the ball's shape has a radius of 20
	objects.ball.fixture = love.physics.newFixture(objects.ball.body, objects.ball.shape, 2) --attach shape to body and give it a friction of 1
	objects.ball.fixture:setRestitution(0.9) --let the ball bounce

	--let's create a couple blocks to play around with
	objects.block1 = {}
	objects.block1.body = love.physics.newBody(world, 200, 550, "dynamic")
	objects.block1.body:setMass(3000) --uff, very heavy block at the bottom
	objects.block1.shape = love.physics.newRectangleShape(0, 0, 50, 100, 45)
	objects.block1.fixture = love.physics.newFixture(objects.block1.body, objects.block1.shape, 2) --with plenty of friction, will be hard to move around

	--[[
	objects.block2 = {}
	objects.block2.body = love.physics.newBody(world, 200, 400, "dynamic")
	objects.block2.body:setMass(300)
	objects.block2.shape = love.physics.newPolygonShape(0, 0, 50, 250, 90, 300, 250, 290)
	objects.block2.fixture = love.physics.newFixture(objects.block2.body, objects.block2.shape, 0.5)
	--]]

	objects.box = {}
	objects.box.body = love.physics.newBody(world, 400, 300, "dynamic") --this is the physics body
	--objects.box.shape = love.physics.newRectangleShape(0, 0, 50, 50, 0) --the shape is for handling collisions
	objects.box.shape = love.physics.newRectangleShape(0, 0, 132, 108, 0) --the shape is for handling collisions
	objects.box.shape = love.physics.newPolygonShape(0, 0, 46, 24, 77, 0)
	--objects.box.shape = love.physics.newPolygonShape(23, 19, 46, 24, 77, 0, 130, 68, 115, 90, 69, 104, 14, 93, 1, 59)
	objects.box.fixture = love.physics.newFixture( objects.box.body, objects.box.shape, 0.1)
	objects.box.body:setMass(1) --give it a mass of 15
	objects.box.image = love.graphics.newImage("rock_1.png")

	--initial graphics setup
	love.graphics.setBackgroundColor(104, 136, 248) --set the background color to a nice blue
	love.graphics.setMode(650, 650, false, true, 0) --set the window dimensions to 650 by 650
end

function love.update(dt)
	world:update(dt) --this puts the world into motion

	--here we are going to create some keyboard events
	if love.keyboard.isDown("right") then --press the right arrow key to push the ball to the right
		objects.ball.body:applyForce(400, 0)
	elseif love.keyboard.isDown("left") then --press the left arrow key to push the ball to the left
		objects.ball.body:applyForce(-400, 0)
	elseif love.keyboard.isDown("up") then --press the up arrow key to set the ball in the air
		objects.ball.body:setPosition(650/2, 650/2)
	end
end

function love.draw()
	love.graphics.setColor(72, 160, 14) -- set the drawing color to green for the ground
	love.graphics.polygon("fill", objects.ground.body:getWorldPoints(objects.ground.shape:getPoints())) -- draw a "filled in" polygon using the ground's coordinates

	love.graphics.setColor(193, 47, 14) --set the drawing color to red for the ball
	love.graphics.circle("fill", objects.ball.body:getX(), objects.ball.body:getY(), objects.ball.shape:getRadius())

	love.graphics.setColor(50, 50, 50) -- set the drawing color to grey for the blocks
	love.graphics.polygon("fill", objects.block1.body:getWorldPoints(objects.block1.shape:getPoints()))
	--love.graphics.polygon("fill", objects.block2.body:getWorldPoints(objects.block2.shape:getPoints()))
	
	local b = objects.box --faster
	love.graphics.draw(b.image, b.body:getX(), b.body:getY(), b.body:getAngle(),  1, 1, b.image:getWidth()/2, b.image:getHeight()/2)
end

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local rnd = function() return math.random() - 0.5 end

function love.load()
	World = love.physics.newWorld(0, 100, true)

	local circlePoints = {}

	for i = 1, 30 do
		local angle = (i - 1) / 30 * (math.pi * 2)
		local x, y = math.cos(angle) * 250 + rnd() * 40, math.sin(angle) * 250 + rnd() * 40
		circlePoints[i * 2 - 1], circlePoints[i * 2] = x, y
	end

	Circle = {}
	Circle.body = love.physics.newBody(World, 0, 0, "kinematic")
	Circle.shape = love.physics.newChainShape(true, unpack(circlePoints))
	Circle.fixture = love.physics.newFixture(Circle.body, Circle.shape)
	Circle.body:setAngularVelocity(0.5)


	Stone = {}
	Stone.body = love.physics.newBody(World, 0, 0, "dynamic")
	Stone.shape1 = love.physics.newPolygonShape(23, 19, 46, 24,  69, 104, 14, 93, 1, 59)
	Stone.shape2 = love.physics.newPolygonShape(46, 24, 77, 0, 130, 68, 115, 90, 69, 104)
	Stone.fixture1 = love.physics.newFixture(Stone.body, Stone.shape1, 5)
	Stone.fixture2 = love.physics.newFixture(Stone.body, Stone.shape2, 5)
end


function love.update(dt)
	World:update(dt)
end

function love.draw()
	love.graphics.translate(400, 300)

	love.graphics.line(Circle.body:getWorldPoints(Circle.shape:getPoints()))

	love.graphics.polygon("line", Stone.body:getWorldPoints(Stone.shape1:getPoints()))
	love.graphics.polygon("line", Stone.body:getWorldPoints(Stone.shape2:getPoints()))
end