From 33cac793736c1d419cc69e1caac0feb248657a6f Mon Sep 17 00:00:00 2001
From: Colin Snover
Date: Wed, 16 Mar 2016 21:57:36 -0500
Subject: SCI32: Work around bad Styler script in KQ7 2.0b

The SCI2.1mid version of the game includes scripts designed for
SCI2.1early which means wrong parameters are sent to the kernel.
---
 engines/sci/graphics/frameout.cpp | 13 +++++++++++--
 engines/sci/graphics/frameout.h   |  2 +-
 2 files changed, 12 insertions(+), 3 deletions(-)

(limited to 'engines/sci/graphics')

diff --git a/engines/sci/graphics/frameout.cpp b/engines/sci/graphics/frameout.cpp
index fc9f5d8299..30e59c208c 100644
--- a/engines/sci/graphics/frameout.cpp
+++ b/engines/sci/graphics/frameout.cpp
@@ -1120,11 +1120,20 @@ inline ShowStyleEntry *GfxFrameout::deleteShowStyleInternal(ShowStyleEntry *cons
 // and need to be fixed in future
 // TODO: SQ6 does not use 'priority' (exists since SCI2) or 'blackScreen' (exists since SCI3);
 // check to see if other versions use or if they are just always ignored
-void GfxFrameout::kernelSetShowStyle(const uint16 argc, const reg_t &planeObj, const ShowStyleType type, const int16 seconds, const int16 back, const int16 priority, const int16 animate, const int16 frameOutNow, const reg_t &pFadeArray, const int16 divisions, const int16 blackScreen) {
+void GfxFrameout::kernelSetShowStyle(const uint16 argc, const reg_t planeObj, const ShowStyleType type, const int16 seconds, const int16 back, const int16 priority, const int16 animate, const int16 frameOutNow, reg_t pFadeArray, int16 divisions, const int16 blackScreen) {
 
 	bool hasDivisions = false;
 	bool hasFadeArray = false;
-	if (getSciVersion() < SCI_VERSION_2_1_MIDDLE) {
+
+	// KQ7 2.0b uses a mismatched version of the Styler script (SCI2.1early script
+	// for SCI2.1mid engine), so the calls it makes to kSetShowStyle are wrong and
+	// put `divisions` where `pFadeArray` is supposed to be
+	if (getSciVersion() == SCI_VERSION_2_1_MIDDLE && g_sci->getGameId() == GID_KQ7) {
+		hasDivisions = argc > 7;
+		hasFadeArray = false;
+		divisions = argc > 7 ? pFadeArray.toSint16() : -1;
+		pFadeArray = NULL_REG;
+	} else if (getSciVersion() < SCI_VERSION_2_1_MIDDLE) {
 		hasDivisions = argc > 7;
 		hasFadeArray = false;
 	} else if (getSciVersion() < SCI_VERSION_3) {
diff --git a/engines/sci/graphics/frameout.h b/engines/sci/graphics/frameout.h
index aef215356d..7cc1adf059 100644
--- a/engines/sci/graphics/frameout.h
+++ b/engines/sci/graphics/frameout.h
@@ -333,7 +333,7 @@ private:
 public:
 	// NOTE: This signature is taken from SCI3 Phantasmagoria 2
 	// and is valid for all implementations of SCI32
-	void kernelSetShowStyle(const uint16 argc, const reg_t &planeObj, const ShowStyleType type, const int16 seconds, const int16 direction, const int16 priority, const int16 animate, const int16 frameOutNow, const reg_t &pFadeArray, const int16 divisions, const int16 blackScreen);
+	void kernelSetShowStyle(const uint16 argc, const reg_t planeObj, const ShowStyleType type, const int16 seconds, const int16 direction, const int16 priority, const int16 animate, const int16 frameOutNow, reg_t pFadeArray, int16 divisions, const int16 blackScreen);
 
 #pragma mark -
 #pragma mark Rendering
-- 
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