visual tweaks

there are entrance or exit artifacts; this set of values seems to give acceptable levels of entrance artifacts

.gitignore

@@ -1,2 +1,3 @@
 .DS_Store
 .vscode/settings.json
+vacation.bin

.gitmodules

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+[submodule "shrinko8"]
+	path = shrinko8
+	url = https://github.com/thisismypassport/shrinko8.git

clouds3.p8

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+pico-8 cartridge // http://www.pico-8.com
+version 42
+__lua__
+
+function _init()
+	cmgr0=cloud_manager:new(15,51,5,1,5,13)
+	cmgr1=cloud_manager:new(12,51-8,7,4,13,6)
+	cmgr2=cloud_manager:new(6,51-14,9,3,15,7)
+	cmgr0.step=5
+	cmgr1.step=4
+	cmgr2.step=3
+ last_x=0
+ x=0
+ dx=0
+end
+
+
+function _update60()
+ if (btn(4)) dx+=1.0
+ dx*=0.75
+ x+=dx
+ while last_x<x do
+		cmgr0:update()
+		cmgr1:update()
+		cmgr2:update()
+		last_x+=1
+	end
+end
+
+function _draw()
+ cls(12)
+	cmgr0:draw()
+	cmgr1:draw()
+	cmgr2:draw()
+end
+
+cloud_manager={}
+function cloud_manager:new(sparseness,y,h,oval_h,c0,c1)
+ local c={
+		frame=0,
+		clouds={},
+		bitplanes=split"241,242,244,248",
+		step=1,
+		sparseness=sparseness,
+		y=y,
+		c0=c0,
+		c1=c1,
+		h=h,
+		oval_h=oval_h
+	}
+	setmetatable(c,{__index=cloud_manager})
+	return c
+end
+
+function cloud_manager:update()
+ self.frame+=1
+	if self.frame%(self.step*self.sparseness) == 0 then
+	 local bp=deli(self.bitplanes,1)
+		add(self.clouds,{x=127,y=rnd()*self.h,w=flr(rnd()*16)+16,plane=bp})
+		add(self.bitplanes,bp)
+	end
+	 
+	if self.frame%self.step==0 then
+	 local clouds2={}
+	 for c in all(self.clouds) do
+	  c.x-=1
+	  if (c.x+c.w>0) add(clouds2,c)
+	 end
+	 self.clouds=clouds2
+	end
+end
+
+function cloud_manager:draw()
+	local r0=96
+	local r1=96+16
+	local h=self.h+self.oval_h+1
+	assert(h<=16)
+
+	-- render to spritesheet
+	poke(0x5f55,0x00)
+	rectfill(0,r0,127,r0+h,0)
+	
+	-- use bitplanes
+	for c in all(self.clouds) do
+		poke(0x5f5e,c.plane)
+		ovalfill(c.x,r0+c.y,c.x+c.w,r0+c.y+self.oval_h,15)
+	end
+	poke(0x5f5e,255)
+	
+	-- render from high memory
+	-- to higher memory
+	rectfill(0,r1,127,r1+h,0)
+	
+	for i in all(split"0,1,2,4,8") do
+		palt(i,true)
+	end
+	for i=0,15 do
+		pal(i,7)
+	end
+	
+	poke(0x5f5e,0xf1)
+	sspr(0,r0,128,h,0,r1) 
+	poke(0x5f5e,0xf2)
+	sspr(0,r0,128,h,1,r1+1) 
+	sspr(0,r0,128,h,5,r1+1) 
+	poke(0x5f5e,255)
+	
+	-- render to screen
+	poke(0x5f55,0x60)
+	pal()
+	pal(1,self.c1)
+	pal(2,self.c0)
+	pal(3,self.c1)
+	sspr(0,r1,128,h,0,self.y)
+	pal()
+end
+
+__gfx__
+00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+00700700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+00077000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+00077000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+00700700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

palettes.txt

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+Arcade Mode palette notes:
+
+-- palette use:
+-- 0: shallow sea blue (1)
+-- 1: black (for sprites)
+-- 2: dolphin shading
+-- 3: azure water, maybe score display? (140)
+-- 4, 5: keep default in sky layer (for emergency awakener)
+--   4 (underwater) is a deeper blue shade part of sea
+-- 6: dolphin specular highlights
+-- 7: dolphin white paint
+-- 8, 9: layer specific
+--  sky:
+--    8: bright cloud shadows (15)
+--    9: light gray for clouds (6? 13? 134?)
+-- 10: word primary (yellow 10?)
+-- 11: word shadow (wood 132?)
+-- 12: dolphin eye
+-- 13: common sky color 
+--     this is a reassignment candidate but means I will never do
+--     the "sunset palette cycle" thing
+-- 14: dolphin primary color
+-- 15: highlight white (all layers)
+--
+-- dolphin colors are different
+-- between zones; correlated.
+-- wave, text, and black colors
+-- are the same between zones.
+-- other colors are for
+-- elements that only ever
+-- appear in one zone.
+--
+-- TODO: consider changing sky
+-- colors in different stages;
+-- document what colors those
+-- are (nrm_pal) if so.
+
+
+Zonk Mode palette notes:
+
+0: bg
+1, 2: dark primary bg, primary bg
+3: accent bg
+4: keep default (for awakener timer); alt. accent
+5: keep default; blending color
+6, 7: keep default
+8..11: fade-in colors
+12: final shadow color
+13: final accent color
+14: final normal text color
+15: final slow-fade text color
+
+fade-outs are screen space palette changes on 12..15.