Love2D:ゲームエンジンその6

元記事

http://yal.cc/love2d-shooting-things/
シューティングの原型

main.lua

player = {
	x = 100,
	y = 100,
	speed = 200,
	heat = 0,
	heatp = 0.1
}
bullets = { }
 
function love.update(dt)
	if love.keyboard.isDown('a') then player.x = player.x - dt * player.speed end
	if love.keyboard.isDown('d') then player.x = player.x + dt * player.speed end
	if love.keyboard.isDown('w') then player.y = player.y - dt * player.speed end
	if love.keyboard.isDown('s') then player.y = player.y + dt * player.speed end
	player.heat = math.max(0, player.heat - dt)
	if love.mouse.isDown('l') and player.heat <= 0 then
		local direction = math.atan2(love.mouse.getY() - player.y, love.mouse.getX() - player.x)
		table.insert(bullets, {
			x = player.x,
			y = player.y,
			dir = direction,
			speed = 400
		})
		player.heat = player.heatp
	end
	-- update bullets:
	local i, o
	for i, o in ipairs(bullets) do
		o.x = o.x + math.cos(o.dir) * o.speed * dt
		o.y = o.y + math.sin(o.dir) * o.speed * dt
		if (o.x < -10) or (o.x > love.graphics.getWidth() + 10)
		or (o.y < -10) or (o.y > love.graphics.getHeight() + 10) then
			table.remove(bullets, i)
		end
	end
end
 
function love.draw()
	-- draw player:
	love.graphics.setColor(0, 255, 0, 255)
	love.graphics.circle('fill', player.x, player.y, 15, 8)
	-- draw bullets:
	love.graphics.setColor(0, 0, 255, 255)
	local i, o
	for i, o in ipairs(bullets) do
		love.graphics.circle('fill', o.x, o.y, 10, 8)
	end
end
 
function love.load()
	love.graphics.setBackgroundColor(0, 0, 0)
end

Zip

作業ディレクトリで以下コマンド発行
zip -r ../${PWD##*/}.love *

Run

はい出来ました。