add draw/update stat readout

surprisingly, update is most of my problem

vacuum_gambit.p8

@@ -107,6 +107,22 @@ function linked_list:strip(f)
  self.tail = p
 end
 
+-- stripmove calls x:move() for
+-- each node, removing each node
+-- for which x:move() is true.
+function linked_list:stripmove()
+ local p, n = self, self.next
+ while n do
+  if n:move() then
+   p.next = n.next
+  else
+   p = n
+  end
+  n = n.next
+ end
+ self.tail = p
+end
+
 -- optimized special case -
 -- could be done with strip but
 -- this avoids extra function
@@ -183,14 +199,7 @@ end
 
 function _update60()
  mode:update()
-end
-
-function call_f(x)
- return x:f()
-end
-
-function call_move(x)
- return x:move()
+ ustat = stat(1)
 end
 
 function ones(n)
@@ -230,12 +239,11 @@ function updategame()
   interlude -= 1
  else
   current_wave = flotilla.new()
-  current_wave:load(0, 0, min(ones(waves_complete)\2, 4))
+  current_wave:load(rnd() > 0.5 and 7 or 0, 0, min(ones(waves_complete)\2, 4))
  end
  events:vore(new_events)
- events:strip(call_move)
- for _, lst in ipairs{intangibles_bg, eships} do
-  lst:strip(call_move)
+ for _, lst in ipairs{events, intangibles_bg, eships} do
+  lst:stripmove()
  end
 
 	-- eship collider will be used
@@ -250,14 +258,13 @@ function updategame()
    if(es:hitship(ps)) eship_collider:yoink(es)
   end
   ebullets:strip(function(eb)
-   -- loopify this when split moves implemented
    if (eb:move()) return true
    if (not collides(pbox, hurtbox(eb))) return
    ps:hitbullet(eb)
    return eb:hitship(ps)
   end)
  else
-  ebullets:strip(call_move)
+  ebullets:stripmove()
  end
 
  pbullets:strip(function(pb)
@@ -268,7 +275,7 @@ function updategame()
   end
  end)
  
- intangibles_fg:strip(call_move)
+ intangibles_fg:stripmove()
 
 	if waves_complete == 32767 and not eships.next and not ebullets.next and not events.next then
 	  game_state = win
@@ -289,6 +296,8 @@ end
 
 function _draw()
  mode:draw()
+ local ds = stat(1)
+ print(tostr(ustat).." + "..tostr(ds-ustat), 0, 122, 7)
 end
 
 function drawgame_top()
@@ -579,17 +588,22 @@ end
 function ship_m:move()
  self:refresh_shield()
  local dx, dy, shoot_spec1, shoot_spec2 = self:act()
- dx = self:constrain(self.x, self.xmomentum, self.xmin, self.xmax, dx)
- dy = self:constrain(self.y, self.ymomentum, self.ymin, self.ymax, dy)
+ local sg, xm, ym = self.special_guns, self.xmomentum, self.ymomentum
+ dx = self:constrain(self.x, xm, self.xmin, self.xmax, dx)
+ dy = self:constrain(self.y, ym, self.ymin, self.ymax, dy)
  self:maybe_shoot(self.main_gun)
- if (shoot_spec1 and self.special_guns) self:maybe_shoot(self.special_guns[1])
- if (shoot_spec2 and self.special_guns) self:maybe_shoot(self.special_guns[2])
+ if sg then
+  if (shoot_spec1) self:maybe_shoot(sg[1])
+  if (shoot_spec2) self:maybe_shoot(sg[2])
+ end
  spark(self.sparks, self.x + 4*self.size, self.y + 4*self.size, dx*2.5, dy*2.5, self.sparkodds)
- self.xmomentum = self:calc_velocity(self.xmomentum, dx)
- self.ymomentum = self:calc_velocity(self.ymomentum, dy)
+ xm = self:calc_velocity(xm, dx)
+ ym = self:calc_velocity(ym, dy)
 
- self.x += self.xmomentum
- self.y += self.ymomentum
+ self.x += xm
+ self.y += ym
+ self.xmomentum = xm
+ self.ymomentum = ym
 
  return false
 end
@@ -685,8 +699,6 @@ end
 --   default: die, return true.
 --   returns whether to delete
 --   the bullet
--- die -- on-removal event,
---   default no-op
 bullet_base = mknew{}
 
 gun_base = mknew{ 
@@ -814,10 +826,13 @@ function bullet_base:hitship(_)
 end
 
 function bullet_base:move()
- self.x += self.dx
- self.y += self.dy
- if (self.f) self.f -= 1
- return (self.y > 130) or (self.y < -self.height*8) or (self.f and self.f < 0) or (self.x > 128) or (self.x < -self.width*8)
+ local x,y,f = self.x + self.dx, self.y+self.dy,self.f
+ self.x,self.y=x,y
+ if f then
+  self.f = f-1
+  if (f <= 0) return true
+ end
+ return (y> 130) or (y < -(self.height<<3)) or (x > 128) or (x < -(self.width<<3))
 end
 
 function bullet_base:draw()
@@ -859,25 +874,20 @@ function gun_base:actually_shoot(x, y)
  self.shot_idx = idx
  shots = shots[idx]
  for s in all(shots) do
-  local a,xo,v = unpack(s)
-  v = v or veloc
-  xo = xo or 0
+  local a,xo,v = s[1]+aim, s[2] or 0, s[3] or veloc
   -- reverse x-offset for negative base angle
   if (aim < 0) xo = -xo
-  a += aim
   -- todo: switch munition
   --  depending on angle
   --  (allows for non-round
   --   sprites and hitboxes on
   --   shots from guns with
   --   widely varying angles)
-  local m = munition.new{}
-  -- todo: automatically make
-  -- high velocity shots do
-  -- multiple collision checks
-  m.dy = sin(a) * veloc
-  m.dx = cos(a) * veloc
-  m:spawn_at(x+(xo or 0), y)
+  local m = munition.new{
+   dx=cos(a)*v,
+   dy=sin(a)*v
+  }
+  m:spawn_at(x+xo, y)
  end
 end
 
@@ -885,44 +895,32 @@ end
 -->8
 -- bullets and guns
 
-zap_e = mknew(bullet_base.new{
+zap_p = mknew(bullet_base.new{
  --shape
- sprite = 9, --index of ammo sprite
- width = 1, --in 8x8 blocks
+ sprite = 8, --index of ammo sprite
+ width = 0.25, --in 8x8 blocks
  height = 1,
  hurt = { -- hurtbox - where this ship can be hit
   x_off = 0, -- upper left corner
   y_off = 0, -- relative to sprite
   width = 2,
-  height = 8
+  height = 8,
  },
  x_off = 1, -- how to position by ship
- y_off = 8,
- 
+ y_off = 0,
  damage = 1,
 
  hitship = const_fxn(true),
 
- category = enemy_blt_cat,
-})
-
-zap_p = mknew(zap_e.new{
- sprite = 8,
- y_off = 0,
  category = player_blt_cat,
 })
 
-zap_gun_e = mknew(gun_base.new{
- cooldown = 0x0.0020, -- frames between shots
- veloc = 4,
- munition = zap_e,
-})
-
-zap_gun_p = mknew(zap_gun_e.new{
+zap_gun_p = mknew(gun_base.new{
  icon = 19,
- munition = zap_p,
- veloc = 8,
+ cooldown = 0x0.0020, -- frames between shots
+ veloc = 7,
  aim = 0.25,
+ munition = zap_p,
  hdr = "mAIN gUN",
 })
 
@@ -1054,8 +1052,8 @@ rate: 2/sec
 vulcan_e = mknew(bullet_base.new{
  --shape
  sprite = 21,
- width = 1, --in 8x8 blocks
- height = 1,
+ width = 0.125, --in 8x8 blocks
+ height = 0.5,
  hurt = { -- hurtbox - where this ship can be hit
   x_off = 0, -- upper left corner
   y_off = 0, -- relative to sprite
@@ -1315,7 +1313,7 @@ chasey = mknew(ship_m.new{
  drag = 0.075,
 
  init = function(ship)
-  ship.main_gun=ship.main_gun or zap_gun_e.new{}
+  --ship.main_gun=ship.main_gun or zap_gun_e.new{}
  end
 })
 
@@ -2019,8 +2017,8 @@ __gfx__
 00077000067c665000000000cdd10cd10b3dd350094dd42000c0000cb3350b35b7000000a8000000e88e2882484e24423ba77ab328a77a820000000000000000
 00077000067d665000000000cd10cdd100b3350000944200c0000000b350b335b7000000a8000000e88e2882e84e28823ba77ab328a77a820000000000000000
 0070070065666765000000000ddddd100b33355009444220c000000c03333350b7000000a800000008888820048488203bbaabb3288aa8820000000000000000
-000000006506506500000000001111000b0b5050090920200c0000c00055550037000000a2000000008882000048420003bbbb30028888200000000000000000
-00000000650000650000000000000000000b50000009200000c0cc00000000003b00000082000000000820000008200000333300002222000000000000000000
+000000006506506500000000001111000b0b5050090920200c0000c000555500b7000000a2000000008882000048420003bbbb30028888200000000000000000
+00000000650000650000000000000000000b50000009200000c0cc0000000000b700000082000000000820000008200000333300002222000000000000000000
 0000000000065000000650000003b0000070070080000000700000000bb0000008800000000000000009200000000000cccccccd000650000000000000000000
 000000000067500000076500000370000005500080000000b0000000b76300008a920000000000009009200200000000c111111d006765000000000000000000
 00000000006d6500006d6500000b7000700660079000000030000000b663000089920000000550009994444200000000c111111d006d65000000000000000000
@@ -2211,8 +2209,11 @@ __gff__
 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000212060a0e01091119000000000000002232363a3e050d151d
 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
 __map__
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