feat: Add controls to update paramaters

README.md

@@ -10,3 +10,9 @@ So yeah, this is my implementation of that, but with Lua and a couple extra feat
 To run this project you need to install [Love2D](https://love2d.org) yourself.
 There is a great tutorial on how to do all of this [here](https://love2d.org/wiki/Getting_Started).
 
+## Controls
+
+* Space - Remove all circles
+* Q/E - Decrease/increase speed
+* A/D - Decrease/increase density
+

conf.lua

@@ -1,3 +1,4 @@
 function love.conf(t)
 	t.window.title = "Circle packing"
+	t.console = true
 end

main.lua

@@ -1,18 +1,26 @@
+love.graphics.setNewFont(45)
+love.keyboard.setKeyRepeat(true)
+
 local Circle = require("Circle")
 
 local circles = {}
 local spots = {}
+
+local notification_message = "Notification"
+local notification_transparency = 0
+local total = 3
+local speed = 5
+
 function love.load()
 	local stencil_data = love.image.newImageData("stencil.png")
 	local w, h = stencil_data:getDimensions()
+	love.window.setMode(w, h)
 
 	for x = 0, w - 1 do
 		for y = 0, h - 1 do
 			local r, g, b = stencil_data:getPixel(x, y)
 			local brigthness = (r + g + b) / 3
-			if brigthness > 0.9 then
-				table.insert(spots, { x, y })
-			end
+			if brigthness > 0.9 then table.insert(spots, {x, y}) end
 		end
 	end
 end
@@ -24,17 +32,13 @@ end
 local function isInCircle(x, y)
 	for _, circle in ipairs(circles) do
 		local d = dist(circle.x, circle.y, x, y)
-		if d < circle.r then
-			return true
-		end
+		if d < circle.r then return true end
 	end
 end
 
 local function areCirclesOverlapping(circle1, circle2)
 	local d = dist(circle1.x, circle1.y, circle2.x, circle2.y)
-	if d - 2 < circle1.r + circle2.r then
-		return true
-	end
+	if d - 2 < circle1.r + circle2.r then return true end
 end
 
 local function isCircleOverlapping(circle)
@@ -59,33 +63,52 @@ local function createCircle()
 	return Circle:new(x, y)
 end
 
+local function showNotification(msg)
+	notification_transparency = 1
+	notification_message = msg
+end
+
+function love.keypressed(key)
+	if key == "space" then
+		showNotification("Reset")
+		circles = {}
+	elseif key == "e" then
+		showNotification("Increase speed")
+		speed = speed * 1.2
+	elseif key == "q" then
+		showNotification("Decrease speed")
+		speed = speed * 0.8
+	elseif key == "d" then
+		showNotification("Increase density")
+		total = total * 1.2
+	elseif key == "a" then
+		showNotification("Decrease density")
+		total = total * 0.8
+	end
+end
+
 function love.update(dt)
-	local total = 3
+	notification_transparency = notification_transparency * dt * 59
 	for _ = 1, total do
 		local c = createCircle()
 
-		if c then
-			table.insert(circles, c)
-		end
+		if c then table.insert(circles, c) end
 	end
 
 	for _, circle in ipairs(circles) do
 		if circle.growing then
-			if isCircleOverlapping(circle) then
-				circle.growing = false
+			if isCircleOverlapping(circle) then circle.growing = false end
+			if circle:edges() then circle.growing = false end
 		end
-			if circle:edges() then
-				circle.growing = false
-			end
-		end
-		circle:grow(5*dt)
+		circle:grow(speed * dt)
 	end
 end
 
 function love.draw()
-	for _, circle in ipairs(circles) do
-		circle:draw()
-	end
+	love.graphics.setColor(1, 1, 1)
+	for _, circle in ipairs(circles) do circle:draw() end
+
+	love.graphics.setColor(0.8, 0.1, 0.1, notification_transparency)
+	love.graphics.print(notification_message, 10, 10)
 end
 
-