add projectile death particle

obj/game/Projectile.lua

@@ -49,4 +49,10 @@ function Projectile:draw()
     love.graphics.circle('fill', self.x, self.y, self.s)
 end
 
+---Kills Projectile
+function Projectile:kill()
+    self.area:addGameObject('ProjectileDeathEffect', self.x, self.y, {w = self.s*3})
+    self:destroy()
+end
+
 return Projectile

obj/game/ProjectileDeathEffect.lua

@@ -0,0 +1,33 @@
+---@class ProjectileDeathEffect:GameObject
+local ProjectileDeathEffect = GameObject:extend()
+
+function ProjectileDeathEffect:new(area, x, y, opts)
+    ProjectileDeathEffect.super.new(self, area, x, y, opts)
+    -- width
+    self.w = opts.w or 12
+    self.first = true
+    self.timer:after(0.1, function()
+        self.first = false
+        self.second = true
+        self.timer:after(0.15, function()
+            self.second = false
+            self:kill()
+        end)
+    end)
+end
+
+---Updates ProjectileDeathEffect
+---@param dt number delta time
+function ProjectileDeathEffect:update(dt)
+    ProjectileDeathEffect.super.update(self, dt)
+end
+
+---Draws ProjectileDeathEffect
+function ProjectileDeathEffect:draw()
+    ProjectileDeathEffect.super.draw(self)
+    if self.first then love.graphics.setColor(COLORS.default)
+    elseif self.second then love.graphics.setColor(COLORS.hp) end
+    love.graphics.rectangle('fill', self.x - self.w/2, self.y - self.w/2, self.w, self.w)
+end
+
+return ProjectileDeathEffect