ZLP1/scripts/entities/bullet.lua

Projectile = Entity:New(x,y)

function Projectile:New(x,y,angle,data)
 	local o = Entity:New(x,y,angle)

  o.target = {}
  o.hitbox = 2
  o.draw_scale = 2
  o.angle = angle

  o.hits = data.hits
  o.damage = data.damage
  -- i guess damage is useless to the player but maybe there's stuff that has hp? like obstacles
  o.animation = AnimationContainer:New(data.animation)

  o.moveSpeed = data.moveSpeed
  o.moveSpeedLimits = data.moveSpeedLimits or { min = 0, max = 100}
  o.moveSpeedIncrease = data.moveSpeedIncrease or 0
  o.moveHorizontalIncrease = data.moveHorizontalIncrease or 0
  o.moveVerticalIncrease = data.moveVerticalIncrease or 0
  o.maximumTurnRate = data.maximumTurnRate or 0
  o.moveHorizontal = 0
  o.moveVertical = 0
  -- lists
	o:AddList("Simulate")

  local friendly = data.friendly or false
  local hostile = data.hostile or false

  if friendly == true then
  	o:AddList("FriendlyBullet")
  end
  if hostile == true then
  	o:AddList("HostileBullet")
    o.grazeTimer = 0
    o.Grazed = false
  end
  setmetatable(o, self)
 	self.__index = self
 	return o
end

function Projectile:Step()

  self.moveSpeed = self.moveSpeed + self.moveSpeedIncrease
  self.moveSpeed = math.max(self.moveSpeedLimits.min,self.moveSpeed)
  self.moveSpeed = math.min(self.moveSpeedLimits.max,self.moveSpeed)

  self.moveHorizontal = self.moveHorizontal + self.moveHorizontalIncrease
  self.moveVertical = self.moveVertical + self.moveVerticalIncrease

  local move_x = (self.moveSpeed) * math.cos(self.angle) + self.moveHorizontal
  local move_y = (self.moveSpeed) * math.sin(self.angle) + self.moveVertical

  self:AngleTowards(
    You.pos.x,
    You.pos.y
  )

    -- bends towards the player? owo
  self.pos.x = self.pos.x + move_x + self.maximumTurnRate * math.cos(self.angle)
  self.pos.y = self.pos.y + move_y + self.maximumTurnRate * math.sin(self.angle)

  self:AngleTowards(
    self.pos.x + move_x,
    self.pos.y + move_y
  )


  -- if out of s screen, kill.
  if self.pos.x < 0 or self.pos.x > windowWidth
  or self.pos.y < 0 or self.pos.y > windowHeight then
    self:RemoveList("Simulate")
     self:RemoveList("EnemyBullet")
     self:RemoveList("FriendlyBullet")
  end
end

function Projectile:Draw()
  self.animation:Animate()
  self.animation:Draw(
    self.pos.x,
    self.pos.y,
    self.angle+math.rad(90),
    self.draw_scale,
    self.draw_scale
  )
  love.graphics.line(self.pos.x, self.pos.y, self.pos.x + 50*self.vel.x, self.pos.y + 50*self.vel.y)
 --[[love.graphics.draw(
    self.sprite,
    self.pos.x,
    self.pos.y,
    self.angle+math.rad(90),
    self.draw_scale,
    self.draw_scale,
    self.sprite:getPixelWidth()/2,
    self.sprite:getPixelHeight()/2
  )]]
end