LÖVE

Code: Select all

function love.load()
    y = 0
    x = 0
end
 
function love.update(dt)
    x = x + 0.05
    y = y + 0.05
end

function love.draw( )
    love.graphics.setColor(0, 0, 0)
    love.graphics.circle("line", x, y, 20, 100)

Code: Select all

local mouse_positions = {}
local rand = math.random

function love.load()
	math.randomseed(os.time())
end

function love.draw()
	for i = 1, #mouse_positions do
		local pos = mouse_positions[i]
		local x, y = pos[1], pos[2]
		
		love.graphics.setColor(rand(0, 255), rand(0, 255), rand(0, 255))
		love.graphics.circle("fill", x, y, 10)		
		
		love.graphics.setColor(0, 0, 0)
		love.graphics.circle("line", x, y, 10)		
	end
end

function love.mousemoved(x, y, dx, dy)
	mouse_positions[#mouse_positions + 1] = {x, y}
end

Code: Select all

local mouse_positions = {}
local size = 10

local color_black = {0, 0, 0}
local color_white = {255, 255, 255}

local down = love.mouse.isDown
local get_mouse_pos = love.mouse.getPosition

function love.load()
	love.graphics.setBackgroundColor(color_white)
end

function love.update(dt)
	local x, y = get_mouse_pos()
	
	if down(1) then
		mouse_positions[#mouse_positions + 1] = {color_black, x, y, size}
	elseif down(2) then
		mouse_positions[#mouse_positions + 1] = {color_white, x, y, size}
	end
end

function love.draw()
	local x, y = get_mouse_pos()
	
	for i = 1, #mouse_positions do
		local obj = mouse_positions[i]
		
		love.graphics.setColor(obj[1])
		love.graphics.circle("fill", obj[2], obj[3], obj[4])
	end
	
	love.graphics.setColor(0, 0, 0)
	love.graphics.circle("line", x, y, size)
end

function love.wheelmoved(x, y)
	if y == 1 then
		size = math.max(1, size - 1)
	elseif y == -1 then
		size = math.min(size + 1, 50)
	end
end

Code: Select all

function love.run()
 
	if love.math then
		love.math.setRandomSeed(os.time())
	end
 
	if love.load then love.load(arg) end
 
	-- We don't want the first frame's dt to include time taken by love.load.
	if love.timer then love.timer.step() end
 
	local dt = 0
 
	-- Main loop time.
	while true do
		-- Process events.
		if love.event then
			love.event.pump()
			for name, a,b,c,d,e,f in love.event.poll() do
				if name == "quit" then
					if not love.quit or not love.quit() then
						return a
					end
				end
				love.handlers[name](a,b,c,d,e,f)
			end
		end
 
		-- Update dt, as we'll be passing it to update
		if love.timer then
			love.timer.step()
			dt = love.timer.getDelta()
		end
 
		-- Call update and draw
		if love.update then love.update(dt) end -- will pass 0 if love.timer is disabled
 
		if love.graphics and love.graphics.isActive() then
			--love.graphics.clear(love.graphics.getBackgroundColor())
			love.graphics.origin()
			if love.draw then love.draw() end
			love.graphics.present()
		end
 
		if love.timer then love.timer.sleep(0.001) end
	end
 
end