From 9225f836089b5c701d69c81c14d73fc68dac8850 Mon Sep 17 00:00:00 2001
From: Smallhacker <thesmallhacker@gmail.com>
Date: Sun, 11 Mar 2018 02:31:26 +0100
Subject: [PATCH] Stopped some GFX from reloading when moving from Paradox Cave
 1F to B1

---
 hooks.asm      |  7 +++++++
 shopkeeper.asm | 18 ++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/hooks.asm b/hooks.asm
index 525fdbd..1148e9e 100644
--- a/hooks.asm
+++ b/hooks.asm
@@ -2135,3 +2135,10 @@ org $1BBD55 ; <- DBD55 - Bank1B.asm: 290 (CPX.w #$0076 : BCC BRANCH_LAMBDA)
 JML.l SmithDoorCheck : NOP
 Overworld_Entrance_BRANCH_RHO: ; branch here to continue into door
 ;================================================================================
+
+;================================================================================
+; Paradox Cave Shopkeeper Fixes
+;--------------------------------------------------------------------------------
+org $008C1B ; Bank00.asm@1633 (LDA.b #$01 : STA $420B)
+JSL ParadoxCaveGfxFix
+NOP
\ No newline at end of file
diff --git a/shopkeeper.asm b/shopkeeper.asm
index a7686a6..375e37e 100644
--- a/shopkeeper.asm
+++ b/shopkeeper.asm
@@ -818,3 +818,21 @@ RTS
 ;dw 64, 56 : db $30, $02, $00, $00
 ;dw 72, 56 : db $31, $02, $00, $00
 ;--------------------------------------------------------------------------------
+
+ParadoxCaveGfxFix:
+    ; Always upload line unless you're moving into paradox cave (0x0FF) from above (0x0EF)
+    LDX $A0 : CPX #$00FF : BNE .uploadLine
+    LDX $A2 : CPX #$00EF : BNE .uploadLine
+
+    ;Ignore uploading four specific lines of tiles to VRAM
+    LDX $0118
+    CPX #$1800 : BEQ .skipLine
+    CPX #$1A00 : BEQ .skipLine
+    CPX #$1C00 : BEQ .skipLine
+    CPX #$1E00 : BEQ .skipLine
+
+.uploadLine
+    LDA.b #$01 : STA $420B
+
+.skipLine
+    RTL
\ No newline at end of file