fix precedence error

vacuum_gambit.p8

@@ -127,7 +127,6 @@ function _init()
  mode = game_mode
  init_blip_pals()
 	wipe_game()  -- redundant?
-	load_level(example_level_csv)
 	game_state = game
 	pal(2,129)
 	pal()
@@ -171,6 +170,10 @@ function wipe_game()
  new_events = linked_list.new()
 	primary_ship.main_gun = zap_gun_p.new()
  primary_ship.main_gun:peel()
+ gframe = 0
+ interlude = 0
+ waves_complete = 0
+ current_wave = nil
 end
 
 function _update60()
@@ -185,12 +188,44 @@ function call_move(x)
  return x:move()
 end
 
+function ones(n)
+ local ret = 0
+ while n != 0 do
+  if (n&0x0.0001) ret += 1
+  n >>= 1
+ end
+ return ret
+end
+
 function updategame()
- if (primary_ship.xp >= primary_ship.xptarget) and (lframe - primary_ship.last_xp_frame > 0x0.000f) and (not primary_ship.dead) then
+ if (primary_ship.xp >= primary_ship.xptarget) and (gframe - primary_ship.last_xp_frame > 0x0.000f) and (not primary_ship.dead) then
   mode = rearm_mode.new()
   return _update60()
  end
- leveldone = level_frame()
+ gframe += 0x0.0001
+ if current_wave then
+  if current_wave:update() then
+   -- end of stage
+   waves_complete += 1
+   current_wave = nil
+   if waves_complete < 32767 then
+    interlude = 59 -- plus one dead frame with load_level but no update
+   else
+    -- you maxed out the level
+    -- counter. what the fuck
+    -- is wrong with you?
+    -- go outside.
+    --
+    -- do not spawn more levels.
+    interlude = 32767
+   end
+  end
+ elseif interlude > 0 then
+  interlude -= 1
+ else
+  current_wave = flotilla.new()
+  current_wave:load(0, 0, min(ones(waves_complete)\2, 4))
+ end
  events:vore(new_events)
  events:strip(call_move)
  for _, lst in ipairs{intangibles_bg, pships, eships, pbullets, ebullets} do
@@ -254,7 +289,7 @@ function updategame()
  
  intangibles_fg:strip(call_move)
 
-	if leveldone and not eships.next and not ebullets.next and not events.next then
+	if waves_complete == 32767 and not eships.next and not ebullets.next and not events.next then
 	  game_state = win
 	end
 	if (not pships.next) game_state = lose
@@ -619,7 +654,7 @@ end
 
 function ship_m:hitsomething(dmg)
  if (dmg <= 0) return false
- self.shield_refresh_ready = lframe + self.shieldpenalty
+ self.shield_refresh_ready = gframe + self.shieldpenalty
  if self.shield > 0 then
   self.shield -= dmg
   if self.shield > 0 then
@@ -641,10 +676,10 @@ end
 
 function ship_m:refresh_shield()
  if (self.shield >= self.maxshield) return
- if (lframe < self.shield_refresh_ready) return
+ if (gframe < self.shield_refresh_ready) return
  self.shield += 1
  self.shield = min(self.shield, self.maxshield)
- self.shield_refresh_ready = lframe + self.shieldcooldown
+ self.shield_refresh_ready = gframe + self.shieldcooldown
 end
 
 -->8
@@ -813,12 +848,12 @@ function bullet_base:spawn_at(x, y)
 end
 
 function gun_base:shoot(x, y)
- if (lframe < self.shoot_ready) return false
+ if (gframe < self.shoot_ready) return false
  if self.ammo then
   if (self.ammo <= 0) return false
   self.ammo -= 1
  end
- self.shoot_ready = lframe + self.cooldown
+ self.shoot_ready = gframe + self.cooldown
  self:actually_shoot(x, y)
  return true
 end
@@ -1251,81 +1286,10 @@ shield will
  return ret
 end
 
-frownie = mknew(ship_m.new{
+-- original prototype leftover;
- --shape
+-- likely to be the basis of a
- sprite = 3, --index of ship sprite
+-- standard raider type, so
- size = 1, --all ships are square; how many 8x8 sprites?
+-- i am keeping it around
- hurt = { -- hurtbox - where this ship can be hit
-  x_off = 0, -- upper left corner
-  y_off = 1, -- relative to ship ulc
-  width = 8,
-  height = 6
- },
- sparks = smokespark,
- sparkodds = 8,
- 
- hp = 0.5, -- enemy ships need no max hp
- xp = 0x0.0001,
-
- -- position
- x=60, -- x and y are for upper left corner
- y=8,
- xmomentum = 0,
- ymomentum = 0,
- maxspd = 2, -- momentum cap
- thrust = 0.12, -- momentum added from button
- drag = 0.07, -- momentum lost per frame
- slip = true,
- act = function(self)
-  local tstate,dx = (1 + flr(4*t() + 0.5)) % 6,0
-  if (tstate==1 or tstate==2) dx=-self.thrust
-  if (tstate>=4) dx=self.thrust
-  return dx,0,false,false
- end,
-})
-
-blocky = mknew(frownie.new{
- sprite = 10,
- hp = 1.5,
- xp = 0x0.0002,
- hurt = {
-  x_off = 0,
-  y_off = 0,
-  width = 8,
-  height = 7
- },
- 
- ow = function(self)
-  if self.hp < 1 then
-   self.sprite = 11
-  else
-   self.sprite = 10
-  end
-  ship_m.ow(self)
- end
-})
-
-spewy = mknew(frownie.new{
- sprite=26,
- xp = 0x0.0003,
- hurt = {
-  x_off=0,
-  y_off=1,
-  width=8,
-  height=5
- },
- hp=0.5,
- fire_off_x=4,
- fire_off_y=7,
- act=function(self)
-  local dx,dy,shoot_spec=frownie.act(self)
-  return dx, dy, shoot_spec, self.y > 10
- end,
- init = function(ship)
-  ship.main_gun=ship.main_gun or protron_gun_e.new{}
- end
-})
-
 chasey = mknew(ship_m.new{
  sprite = 5,
  xp = 0x0.0004,
@@ -1403,7 +1367,7 @@ ship_f = mknew(ship_m.new{
  xp = 0x0.0001,
 
  maxspd = 3,
- thrust = 0.15,
+ thrust = 0.1,
  drag = 0.05,
  slip = false,
  act = function(self)
@@ -1428,6 +1392,8 @@ ship_turret = mknew(ship_f.new{
 ship_skirmisher = mknew(ship_f.new{
  sprite=107,
  xp = 0x0.0004,
+ spark = smokespark,
+ sparkodds = 4,
 })
 
 function rnd_spawn_loc()
@@ -1520,259 +1486,145 @@ end
 -- see obsidian vault for
 -- full docs.
 
--->8
+flotilla = mknew{
--- level and event system
+ use_var = 0x1111,
-
+ opt_odds = split"0.5,0.5,0.5,0.5",
--- a level is a map from
+ init=function(this)
--- effective frame number to
+  this.ship_bases={
--- a list of actions for that
+   [0]=mknew(ship_mook.new{ship_t=0}),
--- frame. an action is a
+   [1]=mknew(ship_mook.new{ship_t=1, sprite=104}),
--- method name and its args.
+   [4]=mknew(ship_defender.new{ship_t=4}),
-
+   [5]=mknew(ship_defender.new{ship_t=5, sprite=10}),
--- effective frame number stops
+   [8]=mknew(ship_turret.new{ship_t=8}),
--- when freeze count is nonzero
+   [9]=mknew(ship_turret.new{ship_t=9, sprite=4}),
-
+   [12]=mknew(ship_skirmisher.new{ship_t=12}),
--- a level is won when it hits
+   [13]=mknew(ship_skirmisher.new{ship_t=13, sprite=26}),
--- the end-of-level sentinel 
+  }
--- and there are no more
+ end,
--- tracked enemies.
--- lost when there are no
--- player ships left.
-
--- effective frame
-distance = 0
--- actual frame count since
--- start of level times 0x0.0001
-lframe = 0
-
--- do not advance distance when
--- nonzero
-freeze = 0
-
-eol = {}
-
-function load_level(levelfile)
- distance = 0
- lframe = 0
- freeze = 0
- leveldone = false
- current_level = {}
- local found_eol = false
- if (type(levelfile)=="string") levelfile = csv(levelfile)
- for row in all(levelfile) do
-  local x = current_level[row[1]]
-  if row[2] == "eol" then
-   found_eol = true
-   assert(x==nil, "events on eol frame")
-   current_level[row[1]] = eol
-  else
-   row.next = x
-   current_level[row[1]]=row
-  end
- end
- assert(found_eol)
-end
-
-function level_frame()
- lframe += 0x0.0001
- if (current_level == nil) return true
- if freeze == 0 then 
-  distance += 1
-  local cbs = current_level[distance]
-  if cbs ~= nil then
-   if cbs == eol then
-    current_level = nil
-    return true
-   else
-    while cbs do
-     assert(cbs[1] == distance)
-     local f = _ENV[cbs[2]]
-     assert(type(f) == "function", cbs[2].." at "..distance.." is not a function")
-     f(unpack(cbs, 3))
-     cbs=cbs.next
-    end
-   end
-  end
- end
- return false
-end
--->8
--- example level
-
-function spawn_blocking_rnd_x(typ)
- freeze += 1
- s = typ.new{
-  x = rnd(104),
-  y = -7,
-  ice = 1,
-  orig_die = typ.die,
-  die = function(self)
-   freeze -= self.ice
-   self.ice = 0
-   self:orig_die()
-  end,
- }
- eships:push_back(s)
- return s
-end
-
-function spawn_frownie()
- return spawn_rnd(frownie)
-end
-
-function spawn_blocking_frownie()
- spawn_blocking_rnd_x(frownie)
-end
-
-function spawn_blocky()
- spawn_rnd(blocky)
-end
-
-function spawn_blocking_blocky()
- spawn_rnd(blocky, 1)
-end
-
-function spawn_spewy()
- return spawn_rnd(spewy)
-end
-
-function spawn_chasey()
- return spawn_rnd(chasey)
-end
-
-function spawn_blocking_spewy()
- freeze += 1
- local s = spawn_spewy()
- s.ice = 1
- s.die = function(self)
-  freeze -= self.ice
-  self.ice = 0
-  frownie.die(self)
- end
-end
-
-function spawn_vulcan_chasey()
- local c = spawn_chasey()
- c.main_gun=vulcan_gun_e.new{enemy=true}
- c.sprite=4
- return c
-end
-
-helpers = {
- spawn_frownie,
- spawn_frownie,
- spawn_frownie,
- spawn_blocky,
- spawn_blocky,
- spawn_chasey,
- spawn_spewy,
 }
 
-function spawn_blocking_boss_chasey()
+function flotilla:load(ulc_cx, ulc_cy, lvl)
- local c = spawn_rnd(xl_chasey, 1)
+ local rows,cy,uv,counts={},ulc_cy,self.use_var,{
- local nextspawn = lframe + 0x0.0080
+  [0]=0,
- events:push_back{move=function()
+  [1]=0,
-  if lframe >= nextspawn then
+  [4]=0,
-   helpers[flr(rnd(#helpers))+1]()
+  [5]=0,
-   nextspawn += 0x0.0040
+  [8]=0,
+  [9]=0,
+  [12]=0,
+  [13]=0,
+ }
+ repeat
+  local row,cx,opt,f,mode= {},ulc_cx,{},0,0
+  for i,v in ipairs(self.opt_odds) do
+   opt[i*4-4]=rnd()<v
   end
-  return c.dead
+  repeat
- end}
+   f=fget(mget(cx, cy))
+   -- bits 0x03: control mark or ship?
+   mode = f&0x03
+   if mode==2 then
+    -- bits 0x0c: ship class
+    local ship_t = f&0x0c
+    -- bit 0x20: optional?
+    if f&0x20 == 0 or opt[ship_t] then
+     -- bit 0x10: alternate ship?
+     -- increment ship id if
+     -- alternate is requested
+     -- and we allow alternates
+     -- for this type of ship
+     ship_t+=(uv>>ship_t&0x1)&((f&0x10)>>4)
+     add(row, self.ship_bases[ship_t].new{col=cx-ulc_cx})
+    end
+   end
+   cx += 1
+  until mode==1
+  -- mode 1: end of line control mark
+  -- bits 0x18: what size flotilla is this row used for?
+  if (f&0x18)>>3 <= lvl then
+   -- keep the row; count it
+   for s in all(row) do
+    counts[s.ship_t] += 1
+    s.x,s.y=rnd_spawn_loc()
+    eships:push_back(s)
+   end
+   add(rows, row)
+  end
+  cy += 1
+  -- control mark bit 0x04: end of flotilla
+ until f&0x04 > 0
+ self.rows=rows
+ self:statisfy(counts)
+end
+
+function flotilla:statisfy(counts)
+ -- TODO: now that we know how
+ -- many ships of each kind
+ -- exist, build ships to match
+ -- difficulty target
+ --
+ -- no difficulty model is yet
+ -- implemented, though, so
+ -- just use base ships only
+ -- for this prototype
+end
+
+function flotilla:update()
+ -- algorithm: redistribute
+ -- TODO: alternate flotilla movement algorithms
+
+ -- find effective width and height
+ local min_col,max_col,live_rows=999,0,0
+ for row in all(self.rows) do
+  local row_alive=false
+  for ship in all(row) do
+   if not ship.dead then
+    row_alive=true
+    local col=ship.col
+    if (col < min_col) min_col = col
+    if (col > max_col) max_col = col
+   end
+  end  -- scanned row
+  if (row_alive) live_rows += 1
+ end -- extent search
+
+ if (live_rows == 0) return true  -- done
+
+ -- distribute across box:
+ -- x = [4, 100)
+ -- y = [4, 60)
  
- return c
+ local x_interval,x_offset = 0,52
-end
+ if min_col < max_col then
-
+  x_interval=96/(max_col-min_col)
-function std_spawn(tnm, n, blocking, goodie,altspr)
+  x_offset = 4-min_col*x_interval
- local typ = _ENV[tnm]
- assert(typ and typ.new, tostr(tnm).." not a class")
- for i=1,(n or 1) do
-  spawn_rnd(typ, blocking, goodie,altspr)
  end
+
+ local y_interval,y_offset=0,40
+ if live_rows > 1 then
+  y_interval=52/(live_rows-1)
+  y_offset=4-y_interval
+ end
+
+ -- now assign target locations
+ local real_row=0
+ for row in all(self.rows) do
+  local row_alive = false
+  for ship in all(row) do
+   if not ship.dead then
+    if not row_alive then
+     real_row += 1
+     row_alive = true
+    end
+    ship.want_x = ship.col * x_interval + x_offset
+    ship.want_y = real_row * y_interval + y_offset
+   end -- ship updated
+  end -- row updated
+ end -- table updated
+
+ return false  -- some ships remain
 end
 
--- blocking: 1 or 0
-function spawn_rnd(typ, blocking, goodie,altspr)
- blocking = blocking or 0
- freeze += blocking
- s = typ.new{
-  x = rnd(104),
-  y = -(typ.size * 8 - 1),
-  ice=blocking,
-  die=function(self)
-   freeze -= self.ice
-   self.ice=0
-   typ.die(self)
-  end,
- }
- if (altspr) s.spr = altspr
- eships:push_back(s)
- return s
-end
-
-function multi(times, interval, fnm, ...)
- local f,irm,vargs = _ENV[fnm],interval,pack(...)
- assert(type(f) == "function", fnm.." not a function")
- f(...)
- events:push_back{move=function()
-  irm-=1
-  if irm <= 0 then
-   irm=interval
-   times-=1
-   f(unpack(vargs))
-   return times <= 1
-  end
- end}
-end
-
-function demo_spawn_f(ttn)
- local spx,spy=rnd_spawn_loc()
- local s = _ENV[ttn].new{
-  x = spx,
-  y = spy,
-  want_x = 8 + rnd(96),
-  want_y = 8 + rnd(64)
- }
- eships:push_back(s)
- return s
-end
-
--- then convert sample_level to csv.
--- spawn_spec_gun_at and spawn_main_gun_at will need parsed forms.
--- the boss also needs to be reachable, but one-off is fine.
--- each row of level csv is offset,event,event-args...
--- where offset,eol is a special case.
-
-example_level_csv=[[1,spawn_frownie
-20,demo_spawn_f,ship_mook
-25,demo_spawn_f,ship_defender
-30,demo_spawn_f,ship_turret
-35,demo_spawn_f,ship_skirmisher
-60,spawn_vulcan_chasey
-61,spawn_blocky
-85,spawn_spewy
-115,spawn_spewy
-130,spawn_frownie
-145,spawn_frownie
-180,spawn_spewy
-230,spawn_chasey
-250,spawn_blocking_blocky
-310,spawn_blocking_blocky
-310,spawn_blocking_blocky
-310,spawn_blocking_blocky
-311,spawn_frownie
-401,spawn_frownie
-420,spawn_blocking_frownie
-430,spawn_vulcan_chasey
-450,spawn_frownie
-465,spawn_frownie
-480,spawn_chasey
-500,multi,20,12,spawn_blocking_blocky
-501,spawn_frownie
-620,spawn_blocking_blocky
-630,spawn_vulcan_chasey
-720,spawn_blocking_boss_chasey
-721,eol]]
-
 -->8
 -- standard events
 
@@ -1879,10 +1731,10 @@ function xp_gem:draw()
  -- sprite map position:
  -- sprite id to x and y,
  -- offset shifts specific low
- -- bits of lframe up to the the
+ -- bits of gframe up to the the
  -- bit with value 4 as a cheap
  -- way to pick an anim frame
- if (lframe&0x0.003 == 0) qx, qy = (lframe&0x0.0004)<<16, (lframe&0x0.0008)<<15
+ if (gframe&0x0.003 == 0) qx, qy = (gframe&0x0.0004)<<16, (gframe&0x0.0008)<<15
  sspr(
   (s%16<<3)+qx,
   (s\16<<3)+qy,
@@ -1908,7 +1760,7 @@ end
 function xp_gem:hitship(ship)
  if (ship ~= primary_ship or primary_ship.dead) return false
  primary_ship.xp += self.val
- primary_ship.last_xp_frame = lframe
+ primary_ship.last_xp_frame = gframe
  return true
 end