From c6a0ecd8a430f61606052d66ceac01b9dead05c7 Mon Sep 17 00:00:00 2001
From: ocawesome101 <ocawesome101@gmail.com>
Date: Fri, 4 Jun 2021 20:11:23 -0400
Subject: [PATCH] fix textgpu somehow getting *really* long buffer lines, which
 broke things sometimes

---
 src/lua/core/textgpu.lua | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/lua/core/textgpu.lua b/src/lua/core/textgpu.lua
index 096bd6f..acb2732 100644
--- a/src/lua/core/textgpu.lua
+++ b/src/lua/core/textgpu.lua
@@ -78,7 +78,7 @@ local function set(x, y, text, f, b, safe, noref)
       write("\27[38;2;", r, ";", g, ";", _b, "m")
     end
     fbuffer[y] = fbuffer[y]:sub(1, x - 1) ..
-     string.rep(string.char(f - 1), len) .. fbuffer[y]:sub(x + len)
+      string.rep(string.char(f - 1), len) .. fbuffer[y]:sub(x + len)
   end
   if type(b) == "string" then
     bbuffer[y] = bbuffer[y]:sub(1, x - 1) ..
@@ -92,6 +92,10 @@ local function set(x, y, text, f, b, safe, noref)
     bbuffer[y] = bbuffer[y]:sub(1, x - 1) ..
       string.rep(string.char(b - 1), len) .. bbuffer[y]:sub(x + len)
   end
+  -- clamp buffers
+  tbuffer[y] = unsub(tbuffer[y], 1, w)
+  fbuffer[y] = fbuffer[y]:sub(1, w)
+  bbuffer[y] = bbuffer[y]:sub(1, w)
   if not noref then
     write("\27[", y, ";", x, "H", text)
     flush()
@@ -103,6 +107,7 @@ fullRefresh = function()
     local text = tbuffer[i]
     local fgt = fbuffer[i]
     local bgt = bbuffer[i]
+    --native.log("UPDATE " .. i .. ": \"" .. text .. "\"")
     local pb, pf
     fgt = fgt:gsub("()(.)", function(n, fc)
       local bc, tc = bgt:sub(n,n), text:sub(n,n)
@@ -289,7 +294,8 @@ function textgpu.start()
     end
     for i=start, stop, step do
       local str, fstr, bstr = get(x, i, W, true)
-      if str and fstr and bstr then
+      --native.log("COPY " .. i .. " (" .. (str or "") .. ") to " .. (i + yd))
+      if str then-- and fstr and bstr then
         set(x + xd, i + yd, str, fstr, bstr, true, true)
       end
     end