From 5b42fa81961d86b20659e50f10eb828b900dd1d9 Mon Sep 17 00:00:00 2001
From: Martin Kiewitz
Date: Fri, 31 Oct 2014 20:33:00 +0100
Subject: SCI: script patch for qfg1ega (fixes bug #6407) throwing rocks at
 bird's nest, running ego gets stuck

---
 engines/sci/engine/script_patches.cpp | 40 +++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/engines/sci/engine/script_patches.cpp b/engines/sci/engine/script_patches.cpp
index 8bbbd713a6..3d76848a76 100644
--- a/engines/sci/engine/script_patches.cpp
+++ b/engines/sci/engine/script_patches.cpp
@@ -1916,6 +1916,43 @@ static const SciScriptPatcherEntry pq1vgaSignatures[] = {
 	SCI_SIGNATUREENTRY_TERMINATOR
 };
 
+// ===========================================================================
+//  At the healer's house there is a bird's nest up on the tree.
+//   The player can throw rocks at it until it falls to the ground.
+//   The hero will then grab the item, that is in the nest.
+//
+//  When running is active, the hero will not reach the actual destination
+//   and because of that, the game will get stuck.
+//
+//  We just change the coordinate of the destination slightly, so that walking,
+//   sneaking and running work.
+//
+//  This bug was fixed by Sierra at least in the Japanese PC-9801 version.
+// Applies to at least: English floppy (1.000, 1.012)
+// Responsible method: pickItUp::changeState (script 54)
+// Fixes bug: #6407
+static const uint16 qfg1egaSignatureThrowRockAtNest[] = {
+	0x4a, 0x04,                         // send 04 (nest::x)
+	0x36,                               // push
+	SIG_MAGICDWORD,
+	0x35, 0x0f,                         // ldi 0f (15d)
+	0x02,                               // add
+	0x36,                               // push
+	SIG_END
+};
+
+static const uint16 qfg1egaPatchThrowRockAtNest[] = {
+	PATCH_ADDTOOFFSET(+3),
+	0x35, 0x12,                         // ldi 12 (18d)
+	PATCH_END
+};
+
+//          script, description,                                      signature                            patch
+static const SciScriptPatcherEntry qfg1egaSignatures[] = {
+	{  true,    54, "throw rock at nest while running",            1, qfg1egaSignatureThrowRockAtNest,     qfg1egaPatchThrowRockAtNest },
+	SCI_SIGNATUREENTRY_TERMINATOR
+};
+
 // ===========================================================================
 //  script 215 of qfg1vga pointBox::doit actually processes button-presses
 //   during fighting with monsters. It strangely also calls kGetEvent. Because
@@ -3036,6 +3073,9 @@ void ScriptPatcher::processScript(uint16 scriptNr, byte *scriptData, const uint3
 	case GID_PQ1:
 		signatureTable = pq1vgaSignatures;
 		break;
+	case GID_QFG1:
+		signatureTable = qfg1egaSignatures;
+		break;
 	case GID_QFG1VGA:
 		signatureTable = qfg1vgaSignatures;
 		break;
-- 
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