Bullet code not working.

[Creepercats]

Hello i tried to make my character shoot a pic that looks like laser here is the code

Code: Select all

bullet_speed = 50


bullet ={}

function bullet.spawn(x,y,dir)
	table.insert(bullet,{width = 50, height = 50, x = x, y = y, dir = dir})
end
function bullet.draw()
	for i,v in ipairs(bullet) do
	love.graphics.newImage("images/Laser.png",v.x,v.y,v.width,v.height)
	end
end


function bullet.update(dt)
	for i,v in ipairs(bullet) do
	if v.dir == "up" then
		v.x = v.x + bullet_speed * dt
	end
	end
end


function bullet.shoot(key)
	if key == "up" then
		bullet.spawn(player.y + player.height, player.y + player.height/2, "up" )
	end
end

The code works fine but when i press the key it does nothing, Got any ideas anyone, btw my main file has bin linked up with this one so that's not the problem Thanks and happy new year



~CreeperCats Dev

[MadByte]

Hi,

you shouldn't define the image itself inside the love.draw loop. Instead put it to the "bullet_speed" var and then use love.graphics.draw(img, x, y) inside the draw function.

[Creepercats]

Hi,

you shouldn't define the image itself inside the love.draw loop. Instead put it to the "bullet_speed" var and then use love.graphics.draw(img, x, y) inside the draw function.

Thanks for your reply many i get an example i'm not following 100% if you can that would be great thanks

[MadByte]

Code: Select all

bullet_speed = 50
bullet_img = love.graphics.newImage("images/Laser.png")
bullet ={}

function bullet.spawn(x,y,dir)
   table.insert(bullet,{width = 50, height = 50, x = x, y = y, dir = dir})
end


function bullet.draw()
   for i,v in ipairs(bullet) do
		love.graphics.setColor(255, 255, 255, 255)
		love.graphics.draw(bullet_img, v.x, v.y)
   end
end


function bullet.update(dt)
   for i,v in ipairs(bullet) do
   if v.dir == "up" then
      v.x = v.x + bullet_speed * dt
   end
   end
end


function bullet.shoot(key)
   if key == "up" then
      bullet.spawn(player.y + player.height, player.y + player.height/2, "up" )
   end
end

btw the width and height values does not make much sense as far as I understand your code. If you need them for collision detection with the image use "width = bullet_image:getWidth(), height = bullet_image:getHeight()", this will return the image size.

[micha]

To catch key-presses, you need the love.keypressed-callback.