From f3ac1f492c5cfc4f05a3d426d04a0b7ac45e0468 Mon Sep 17 00:00:00 2001
From: Kistaro Windrider <kistaro@gmail.com>
Date: Sat, 30 Sep 2023 19:15:22 -0700
Subject: [PATCH] Dithering-style fade

Higher performance, allows free use of other palettes, frees up compressed space.
---
 updatedshmup.p8 | 36 +++++++-----------------------------
 1 file changed, 7 insertions(+), 29 deletions(-)

diff --git a/updatedshmup.p8 b/updatedshmup.p8
index 04d44b0..f614e08 100644
--- a/updatedshmup.p8
+++ b/updatedshmup.p8
@@ -247,6 +247,7 @@ function updategame()
 end
 
 function _draw()
+ fillp(0)
  drawgame()
  if (state == game) fadelvl = -45
  if (state == win) dropshadow("win",50,61,11)
@@ -254,37 +255,14 @@ function _draw()
  fadescreen()
 end
 
-fadetable=csv[[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
-1,1,129,129,129,129,129,129,129,129,0,0,0,0,0
-2,2,2,130,130,130,130,130,128,128,128,128,128,0,0
-3,3,3,131,131,131,131,129,129,129,129,129,0,0,0
-4,4,132,132,132,132,132,132,130,128,128,128,128,0,0
-5,5,133,133,133,133,130,130,128,128,128,128,128,0,0
-6,6,134,13,13,13,141,5,5,5,133,130,128,128,0
-7,6,6,6,134,134,134,134,5,5,5,133,130,128,0
-8,8,136,136,136,136,132,132,132,130,128,128,128,128,0
-9,9,9,4,4,4,4,132,132,132,128,128,128,128,0
-10,10,138,138,138,4,4,4,132,132,133,128,128,128,0
-11,139,139,139,139,3,3,3,3,129,129,129,0,0,0
-12,12,12,140,140,140,140,131,131,131,1,129,129,129,0
-13,13,141,141,5,5,5,133,133,130,129,129,128,128,0
-14,14,14,134,134,141,141,2,2,133,130,130,128,128,0
-15,143,143,134,134,134,134,5,5,5,133,133,128,128,0]]
+fadetable = split"0,1.5,1025.5,1029.5,1285.5,1413.5,9605.5,9637.5,-23130.5,-23066.5,-18970.5,-18954.5,-2570.5,-2568.5,-520.5,-8.5,-0.5"
 
 function fadescreen()
  fadelvl += 0.25
- if fadelvl < 0 then
-  pal()
-  return
- end
- local i = flr(fadelvl)
-  for c=0,15 do
-  if i+1>=16 then
-   pal(c,0,1)
-  else
-   pal(c,fadetable[c+1][i+1],1)
-  end
- end
+ if (fadelvl < 1) return
+ local i = min(flr(fadelvl), #fadetable)
+ fillp(fadetable[#fadetable+1-i])
+ rectfill(0,0,128,128,0)
 end
 
 -- puke emits a verbose string
@@ -333,8 +311,8 @@ function pukeboard(item)
 end
 
 function drawgame()
- cls()
  clip(0,0,112,128)
+ rectfill(0,0,112,128,0)
  for slist in all{intangibles_bg, pbullets, pships, eships, ebullets, intangibles_fg} do
   slist:draw()
  end