LÖVE

Code: Select all

function player:update(dt)
....
for _,v in ipairs(self.bullets) do
        local e = 200
        local mx, my = love.mouse.getPosition()
        local w = math.atan2(my-self.body:getY(), mx-self.body:getX())
        v.body:setX(v.body:getX()+math.cos(w)*e*dt)
        v.body:setY(v.body:getY()+math.sin(w)*e*dt)
    end

Code: Select all

newX=oldX+speedX*dt
newY=oldY+speedY*dt

Code: Select all

function player:shoot(dt)
	local px, py = self.body:getPosition()
	local w = math.atan2(love.mouse.getY()-px, love.mouse.getX()-py)
	local bullet = {}
	bullet.body = love.physics.newBody(world, self.body:getX()+math.cos(w), self.body:getY()+math.sin(w))
	bullet.shape = love.physics.newCircleShape(10)
	bullet.fixture = love.physics.newFixture(bullet.body, bullet.shape)

--	local e = 200
	local speed = 200
	local mx, my = love.mouse.getPosition()
	local angle = math.atan2(my-self.body:getY(), mx-self.body:getX())
	bullet.vx = speed * math.cos (angle)
	bullet.vy = speed * math.sin (angle)


	table.insert(self.bullets, bullet)
end

function player:mousepressed(button)
	if button == 1 and pistol.unlocked then
		self:shoot(love.timer.getDelta())
	end
end

function player:update(dt)
	local rot = math.atan2(love.mouse.getY()-self.body:getY(), love.mouse.getX()-self.body:getX())

	for _, bullet in ipairs(self.bullets) do
--        local e = 200
--        local mx, my = love.mouse.getPosition()
--        local w = math.atan2(my-self.body:getY(), mx-self.body:getX())
		local dx = dt*bullet.vx
		local dy = dt*bullet.vy
		bullet.body:setX(bullet.body:getX()+dx)
		bullet.body:setY(bullet.body:getY()+dy)
	end

	-- rotate player towards the mouse
	self.body:setAngle(rot)
	local vx = 0
	local vy = 0
	if love.keyboard.isDown("a") then
		vx = self.speed * -1
	end
	if love.keyboard.isDown("d") then
		vx = self.speed * 1
	end
	if love.keyboard.isDown("w") then
		vy = self.speed * -1
	end
	if love.keyboard.isDown("s") then
		vy = self.speed * 1
	end
	self.body:setLinearVelocity(vx, vy)
end