ZLP1/scripts/entities/enemy/shooter.lua

Shooter = Entity:New(x,y)

function Shooter:New(x,y)
 	local o = Entity:New(x,y)

  o.moveSpeed = 0
  o.hitbox = 10
  o.sprite = love.graphics.newImage("assets/shooter.png")
  o.sprite_cannon = love.graphics.newImage("assets/shooter_cannon.png")
  o.draw_scale = 3
  o.angle = 0
  o.max_health = 2000
  o.health = o.max_health
  o.show_health = true
  o.shotTimer = 1
  -- lists

  setmetatable(o, self)
 	self.__index = self

  o:AddList("Simulate")
  o:AddList("Enemy")
  o:ChangePattern(AttackPattern.DrowningBarrage)

 	return o
end

function Shooter:ChangePattern(pattern)
  self.patternTimer = 0
  self.patternTime = 10000
  self.pattern_t = 0
  self.pattern_v1 = nil
  self.pattern_v2 = nil
  self.pattern_v3 = nil
  self.patternActive = pattern
  self.nextPattern = nil
end

function Shooter:Step()
  if self.shotTimer > 0 then self.shotTimer = self.shotTimer - current_dt end
  if self.shotTimer < 0 then self.shotTimer = 0 end

    --self:AngleTowards(target_x,target_y)
    if self.shotTimer <= 0 then
      self.pattern_t = self.pattern_t + 1 or 0
      self.patternActive(self,self.pattern_t,self.pattern_v1,self.pattern_v2,self.pattern_v3)
    end

    self.patternTimer = self.patternTimer + current_dt
    if self.patternTimer >= self.patternTime then
        self:ChangePattern(self.nextPattern)
    end

  self.pos.x = self.pos.x + self.vel.x
  self.pos.y = self.pos.y + self.vel.y
end

function Shooter:Draw()
  love.graphics.draw(
    self.sprite,
    self.pos.x,
    self.pos.y,
    0, --self.angle-math.rad(90),
    self.draw_scale,
    self.draw_scale,
    self.sprite:getPixelWidth()/2,
    self.sprite:getPixelHeight()/2
  )
    local bullet_variables = ""
    if self.pattern_v1 ~= nil then
      bullet_variables = bullet_variables .. " a: " .. self.pattern_v1 .. ", " or ""
    end
    if self.pattern_v2 ~= nil then
      bullet_variables = bullet_variables .. " b: " .. self.pattern_v2 .. ", " or ""
    end
    if self.pattern_v3 ~= nil then
      bullet_variables = bullet_variables .. " c: " .. self.pattern_v3 or ""
    end
    if self.patternTimer ~= nil then
      bullet_variables = bullet_variables .. " TIME: " .. self.patternTimer or ""
    end

   love.graphics.print(self.pattern_t .. bullet_variables,self.pos.x,self.pos.y-40)
   love.graphics.draw(
    self.sprite_cannon,
    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