partial conversion to CSV-based levels, does not run yet

updatedshmup.p8

@@ -26,22 +26,19 @@ end
 -- ret is definitely not nil
 -- before calling setmetatable.
 -- use to initialize mutables.
+--
+-- if there was a previous new,
+-- it is invoked on the new
+-- object *after* more, because
+-- this works better with the
+-- `more` impls i use.
 function mknew(tt, more)
- local mt = {__index=tt}
- -- check "more" only once ever
- if more then
+ local mt,oldnew = {__index=tt},tt.new
  tt.new=function(ret)
   if(not ret) ret = {}
-   more(ret)
+  if(more) more(ret)
+  if(oldnew) oldnew(ret)
   setmetatable(ret, mt)
-   return ret
-  end
- else
-  tt.new=function(ret)
-   if (not ret) ret = {}
-   setmetatable(ret, mt)
-   return ret
-  end
  end
 end
 
@@ -672,10 +669,7 @@ blocky = frownie.new{
 }
 mknew(blocky)
 
-function spawn_spewy_at(x, y)
-	local spewy = frownie.new{
-	 x = x,
-	 y = y,
+spewy = frownie.new{
  sprite=26,
  power=-20,
  hurt = {
@@ -684,22 +678,20 @@ function spawn_spewy_at(x, y)
   width=8,
   height=5
  },
- 
  hp=1,
  maxpower=70,
  generator=0.5,
-	 main_gun = protron_gun.new{enemy=true},
  fire_off_x=4,
  fire_off_y = 7,
  grab_butts=function()
   local butts=frownie.grab_butts()
   butts[5]=1
   return butts
-	 end,
-	}
- eships:push_back(spewy)
-	return spewy
  end
+}
+mknew(spewy, function(ship)
+ ship.main_gun=ship.main_gun or protron_gun.new{enemy=true}
+end}
 
 chasey = ship_m.new{
  sprite = 5,
@@ -724,32 +716,20 @@ chasey = ship_m.new{
  thrust = 0.2,
  drag = 0.075,
  slip = true,
+}
+mknew(chasey, function(ship)
+ ship.main_gun=ship.main_gun or zap_gun.new{enemy=true}
+end)
 
- grab_butts = function(self)
-  local butts = {0,0,0,0,0}
-  butts[0] = 0
+function chasey:grab_butts()
+ local butts = {[0]=0,0,0,0,0,0}
  if (self.x < primary_ship.x) butts[1] = 1
  if (self.x > primary_ship.x) butts[0] = 1
  if (self.x - 16 < primary_ship.x and self.x + 16 > primary_ship.x) butts[5] = 1
  return butts
- end,
-}
-mknew(chasey)
-
-function spawn_chasey_at(x, y)
- local c = chasey.new{
-  x = x,
-  y = y,
-  main_gun = zap_gun.new{enemy=true},
- }
- eships:push_back(c)
- return c
 end
 
-function spawn_xl_chasey_at(x, y)
- local c = chasey.new{
-  x = x,
-  y = y,
+xl_chasey=chasey.new{
  size=2,
  maxspd=1.25,
  hurt = {
@@ -774,9 +754,9 @@ function spawn_xl_chasey_at(x, y)
   pal()
  end,
 }
- eships:push_back(c)
- return c
-end
+mknew(xl_chasey, function(ship)
+ ship.main_gun=ship.main_gun or zap_gun.new{enemy=true}
+end)
 -->8
 -- collisions
 
@@ -914,35 +894,7 @@ end
 -->8
 -- example level
 
-function std_spawn(tnm, n, blocking, goodie)
- -- TODO: implement
- -- look up enemy type from tnm
- -- spawn n of them at random positions,
- -- see spawn_rnd_x.
- -- if blocking, patch the blocking logic in.
- -- if they drop a goodie, find the goodie,
- --  then patch the bonus logic in.
-end
 
--- to implement: repeat(times, interval, f, ...)
--- once on this frame, then times-1 times after that spaced interval
--- frames apart, f(...). schedule this like the one-off written in
--- example_level.
-
--- 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.
-
-function spawn_rnd_x(typ)
- s = typ.new{
-  x = rnd(104),
-  y = -(typ.size * 8 - 1)
- }
- eships:push_back(s)
- return s
-end
 
 function spawn_blocking_rnd_x(typ)
  freeze += 1
@@ -1048,6 +1000,75 @@ function spawn_blocking_boss_chasey()
  return c
 end
 
+spawns = {
+ chasey = chasey,
+ frownie = frownie,
+ blocky = blocky,
+ spewy = spewy,
+ spewy_xl=spewy_xl,
+ -- TODO: populate this
+}
+function std_spawn(tnm, n, blocking, goodie,altspr)
+ local typ = spawns[tnm]
+ assert(typ, tostr(tnm).." not a spawnable")
+ for i=1,(n or 1) do
+  spawn_rnd(typ, blocking, goodie,altspr)
+ end
+end
+
+-- blocking: 1 or 0
+function spawn_rnd(typ, blocking, goodie,altspr)
+ 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)
+   spawn_goodie(goodie, self.x, self.y, self.size)
+  end
+ }
+ if (altspr) s.spr = altspr
+ eships:push_back(s)
+ return s
+end
+
+-- TODO: spawn_goodie compatible versions of gun drops
+-- TODO: goodie table
+function spawn_goodie(goodie_name, x, y, sz)
+ if (not goodie_name or #goodie_name == 0) return
+ local sh = sz and sz/2 or 0
+ goodies[goodie_name].new{}:spawn_at(x+sh,y+sh)
+end
+
+-- TODO: populate level_events
+
+-- to implement: multi(times, interval, f, ...)
+-- once on this frame, then times-1 times after that spaced interval
+-- frames apart, f(...). schedule this like the one-off written in
+-- example_level.
+function multi(times, interval, fnm, ...)
+ local f,irm = level_events[fnm],interval
+ fnm(...)
+ events:push_back{move=function()
+  irm-=1
+  if irm <= 0 then
+   irm=interval
+   times-=1
+   fnm(...)
+   return times <= 1
+  end
+ end}
+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 = {
  [1]=spawn_frownie,
  [60]=spawn_bonus_vulcan_chasey,