3DreamEngine/main.lua at master · foow/3DreamEngine · GitHub

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local examples = love.filesystem.getDirectoryItems("examples")
for i = #examples, 1, -1 do
	if not love.filesystem.getInfo("examples/" .. examples[i] .. "/main.lua", "file") then
		table.remove(examples, i)
	end
end

love.graphics.setBackgroundColor(0.35, 0.35, 0.35)
local font = love.graphics.newFont(24)
local font_small = love.graphics.newFont(16)

local descriptions = {
	["Lamborghini"] = "PBR rendered Lamborghini with emission texture.",
	["Tavern"] = "PBR rendered Tavern with 9 fully soft shadowed static light sources. Toggle different features to see real time differences.",
	["monkey"] = "Good old Suzanne. Simpliest usage example.",
	["blacksmith"] = "Single room demo. PBR with 3 lightsources. Toggle different features to see real time differences.",
	["firstpersongame"] = "Not really a game, demo scene to see particle systems, outdoor lighting, daytime and rain.",
	["particlesystem"] = "Small particle system example.",
	["lowPolyGame"] = "Unfinished collision demo, flat phong shading.",
	["knight"] = "MagicaVoxel demo.",
}

local mousereleased = false

local function button(text, x, y, w, h)
	love.graphics.push("all")

	local hover = false
	local mx, my = love.mouse.getPosition()
	if mx > x and mx < x + w and my > y and my < y + h then
		love.graphics.setColor(0.75, 0.75, 0.75)
		hover = true
	else
		love.graphics.setColor(0.6, 0.6, 0.6)
	end

	love.graphics.rectangle("fill", x, y, w, h, 5)
	love.graphics.setColor(0.4, 0.4, 0.4)
	love.graphics.setLineWidth(2)
	love.graphics.rectangle("line", x, y, w, h, 5)

	love.graphics.setFont(font)
	local width = font:getWidth(text)
	local scale = math.min(1.0, (w-20) / width)
	local baseline = font:getBaseline() * scale
	love.graphics.setColor(0.1, 0.1, 0.1)
	love.graphics.print(text, x+10, y + h - baseline - 5, 0, scale)
	love.graphics.pop()

	return hover
end

function love.load()
	if love.filesystem.getInfo("default") and love.filesystem.read("default") ~= "" then
		require("examples/" .. love.filesystem.read("default") .. "/main")
	end
end

function love.draw()
	for d,s in ipairs(examples) do
		local hover = button(s, 50, 50 + (d-1)*35, 200, 30)

		if hover and descriptions[s] then
			love.graphics.push("all")
			love.graphics.setColor(0.0, 0.0, 0.0)
			love.graphics.setFont(font_small)
			love.graphics.printf(descriptions[s], 350, 100, 400, "left")
			love.graphics.pop()
		end

		if mousereleased and hover then
			love.draw = nil
			love.keypressed = nil
			require("examples/" .. s .. "/main")
			return
		end
	end

	mousereleased = false
end

function love.mousereleased(x, y, b)
	mousereleased = true
end