Add title screen

bundle/font.lua

@@ -0,0 +1,82 @@
+local font = {}
+font[" "] = {}
+font["a"] = {
+	{0, 1, 0, 0.2},
+	{0, 0.2, 0.2, 0},
+	{0.2, 0, 0.5, 0},
+	{0.5, 0, 0.7, 0.2},
+	{0.7, 0.2, 0.7, 1},
+	{0, 0.6, 0.7, 0.6},
+}
+font["c"] = {
+	{0, 0.2, 0.2, 0},
+	{0.2, 0, 0.5, 0},
+	{0.5, 0, 0.7, 0.2},
+	{0, 0.2, 0, 0.8},
+	{0, 0.8, 0.2, 1},
+	{0.2, 1, 0.5, 1},
+	{0.5, 1, 0.7, 0.8},
+}
+font["e"] = {
+	{0, 0, 0, 1},
+	{0, 0, 0.7, 0},
+	{0, 0.5, 0.5, 0.5},
+	{0, 1, 0.7, 1},
+}
+font["f"] = {
+	{0, 0, 0, 1},
+	{0, 0, 0.7, 0},
+	{0, 0.5, 0.5, 0.5},
+}
+font["i"] = {
+	{0.1, 0, 0.6, 0},
+	{0.35, 0, 0.35, 1},
+	{0.1, 1, 0.6, 1},
+}
+font["k"] = {
+	{0, 0, 0, 1},
+	{0, 0.5, 0.3, 0.5},
+	{0.3, 0.5, 0.7, 0},
+	{0.3, 0.5, 0.7, 1},
+}
+font["l"] = {
+	{0, 0, 0, 1},
+	{0, 1, 0.7, 1},
+}
+font["o"] = {
+	{0, 0.2, 0.2, 0},
+	{0.2, 0, 0.5, 0},
+	{0.5, 0, 0.7, 0.2},
+	{0, 0.2, 0, 0.8},
+	{0, 0.8, 0.2, 1},
+	{0.2, 1, 0.5, 1},
+	{0.5, 1, 0.7, 0.8},
+	{0.7, 0.2, 0.7, 0.8},
+}
+font["r"] = {
+	{0, 0, 0, 1},
+	{0, 0, 0.5, 0},
+	{0.5, 0, 0.7, 0.2},
+	{0.7, 0.2, 0.7, 0.3},
+	{0.7, 0.3, 0.5, 0.5},
+	{0.5, 0.5, 0, 0.5},
+	{0, 0.5, 0.7, 1}
+}
+font["s"] = {
+	{0.7, 0.2, 0.5, 0},
+	{0.5, 0, 0.2, 0},
+	{0.2, 0, 0, 0.2},
+	{0, 0.2, 0, 0.3},
+	{0, 0.3, 0.2, 0.5},
+	{0.2, 0.5, 0.5, 0.5},
+	{0.5, 0.5, 0.7, 0.7},
+	{0.7, 0.7, 0.7, 0.8},
+	{0.7, 0.8, 0.5, 1},
+	{0.5, 1, 0.2, 1},
+	{0.2, 1, 0, 0.8},
+}
+font["t"] = {
+	{0, 0, 0.7, 0},
+	{0.35, 0, 0.35, 1},
+}
+return font

bundle/main.lua

@@ -39,6 +39,14 @@ local scale = nil
 
 local time = nil
 
+local states = {title = 0, gameplay = 1}
+local state = nil
+
+local title = {"r", "e", "f", "l", "e", "c", "t"}
+local start_instructions = {"c", "l", "i", "c", "k", " ", "t", "o", " ", "s", "t", "a", "r", "t"}
+
+font = require("font")
+
 function setScreenDimensions(width, height)
 	window_width = width
 	window_height = height
@@ -66,7 +74,10 @@ function fromScreenCoordinate(x, y)
 	return logical_x, logical_y
 end
 
-function initialize()
+function startStage()
+	love.mouse.setVisible(false)
+	movePaddle(0)
+
 	missiles = {}
 	unreflected_missiles = 0
 	unreflected_missiles_allowed = 0
@@ -93,15 +104,16 @@ function initialize()
 	spawnEnemy(0.65, 0.2)
 	spawnEnemy(0.75, 0.2)
 	spawnEnemy(0.85, 0.2)
+
+	state = states.gameplay
 end
 
 function love.load()
 	math.randomseed(os.time())
-	love.mouse.setVisible(false)
 	local width, height = love.graphics.getDimensions()
 	setScreenDimensions(width, height)
-	movePaddle(0)
-	initialize()
+
+	state = states.title
 end
 
 function spawnCities()
@@ -331,17 +343,19 @@ function updateEnemies(dt)
 end
 
 function love.update(dt)
-	updateMissiles(dt)
-	updateExplosions(dt)
-	updateEnemies(dt)
+	if state == states.gameplay then
+		updateMissiles(dt)
+		updateExplosions(dt)
+		updateEnemies(dt)
 
-	time = time + dt
-	if unreflected_missiles_allowed < unreflected_missiles_max and time >= unreflected_missiles_allowed * unreflected_missiles_allowed_ramp_up then
-		unreflected_missiles_allowed = unreflected_missiles_allowed + 1
-	end
+		time = time + dt
+		if unreflected_missiles_allowed < unreflected_missiles_max and time >= unreflected_missiles_allowed * unreflected_missiles_allowed_ramp_up then
+			unreflected_missiles_allowed = unreflected_missiles_allowed + 1
+		end
 
-	if #explosions == 0 and #missiles == 0 and #enemies == 0 then
-		love.event.quit()
+		if #explosions == 0 and #missiles == 0 and #enemies == 0 then
+			love.event.quit()
+		end
 	end
 end
 
@@ -365,7 +379,13 @@ end
 
 love.mousemoved = movePaddle
 
-love.mousepressed = explodeAllReflected
+function love.mousepressed(x, y, button, istouch, presses)
+	if state == states.gameplay then
+		explodeAllReflected()
+	elseif state == states.title then
+		startStage()
+	end
+end
 
 love.resize = setScreenDimensions
 
@@ -471,11 +491,41 @@ function drawEnemies()
 	end
 end
 
-function love.draw()
-	drawCities()
-	drawWalls()
-	drawMissiles()
-	drawPaddle()
-	drawEnemies()
-	drawExplosions()
+function drawText(x, y, text_scale, text)
+	love.graphics.setLineWidth(2 / 700 * scale)
+	love.graphics.setColor(1, 1, 1)
+	for i, char in ipairs(text) do
+		local glyph = font[char]
+		for _, line in ipairs(glyph) do
+			local x0, y0 = toScreenCoordinates(x + (i - 1) * text_scale + line[1] * text_scale, y + line[2] * text_scale)
+			local x1, y1 = toScreenCoordinates(x + (i - 1) * text_scale + line[3] * text_scale, y + line[4] * text_scale)
+			love.graphics.line(x0, y0, x1, y1)
+		end
+	end
+end
+
+function textWidth(text_scale, text)
+	-- Each character is 0.7 wide with 0.3 character spacing before scaling
+	-- Width of a text is therefore math.max(#text - 0.3, 0) before scaling
+	-- and math.max(#text - 0.3, 0) * text_scale after
+	return math.max(#text - 0.3, 0) * text_scale
+end
+
+function drawTextCentered(y, text_scale, text)
+	local x = (1 - textWidth(text_scale, text)) / 2
+	drawText(x, y, text_scale, text)
+end
+
+function love.draw()
+	if state == states.gameplay then
+		drawCities()
+		drawWalls()
+		drawMissiles()
+		drawPaddle()
+		drawEnemies()
+		drawExplosions()
+	elseif state == states.title then
+		drawTextCentered(0.3, 0.1, title)
+		drawTextCentered(0.45, 0.03, start_instructions)
+	end
 end