From f1cf07eded09f5f66a0915ddb79a890a3a11a362 Mon Sep 17 00:00:00 2001
From: Colin Snover
Date: Thu, 14 Jan 2016 12:05:29 -0600
Subject: SCI: Add kPalMorph stub

---
 engines/sci/engine/kernel.h        |  1 +
 engines/sci/engine/kernel_tables.h |  1 -
 engines/sci/engine/kgraphics32.cpp | 10 ++++++++++
 3 files changed, 11 insertions(+), 1 deletion(-)

(limited to 'engines')

diff --git a/engines/sci/engine/kernel.h b/engines/sci/engine/kernel.h
index a2563b5a32..d9e42cb3ee 100644
--- a/engines/sci/engine/kernel.h
+++ b/engines/sci/engine/kernel.h
@@ -478,6 +478,7 @@ reg_t kPalVaryUnknown(EngineState *s, int argc, reg_t *argv);
 reg_t kPalVaryUnknown2(EngineState *s, int argc, reg_t *argv);
 
 // SCI2.1 Kernel Functions
+reg_t kMorphOn(EngineState *s, int argc, reg_t *argv);
 reg_t kText(EngineState *s, int argc, reg_t *argv);
 reg_t kSave(EngineState *s, int argc, reg_t *argv);
 reg_t kAutoSave(EngineState *s, int argc, reg_t *argv);
diff --git a/engines/sci/engine/kernel_tables.h b/engines/sci/engine/kernel_tables.h
index 53447ab907..b89797f348 100644
--- a/engines/sci/engine/kernel_tables.h
+++ b/engines/sci/engine/kernel_tables.h
@@ -697,7 +697,6 @@ static SciKernelMapEntry s_kernelMap[] = {
 	//   (inclusive) are set to 0
 	{ MAP_CALL(SetPalStyleRange),   SIG_EVERYWHERE,           "ii",                   NULL,            NULL },
 
-	// MorphOn - used by SQ6, script 900, the datacorder reprogramming puzzle (from room 270)
 	{ MAP_CALL(MorphOn),            SIG_EVERYWHERE,           "",                     NULL,            NULL },
 
 	// SCI3 Kernel Functions
diff --git a/engines/sci/engine/kgraphics32.cpp b/engines/sci/engine/kgraphics32.cpp
index a765fe842e..ddb6106c8c 100644
--- a/engines/sci/engine/kgraphics32.cpp
+++ b/engines/sci/engine/kgraphics32.cpp
@@ -728,6 +728,16 @@ reg_t kSetScroll(EngineState *s, int argc, reg_t *argv) {
 	return kStub(s, argc, argv);
 }
 
+// Used by SQ6, script 900, the datacorder reprogramming puzzle (from room 270)
+reg_t kMorphOn(EngineState *s, int argc, reg_t *argv) {
+	// TODO: g_sci->_gfxManager->palMorphIsOn = true
+	// This function sets the palMorphIsOn flag which causes kFrameOut to use
+	// an alternative FrameOut function (GraphicsMgr::PalMorphFrameOut instead
+	// of GraphicsMgr::FrameOut). At the end of the frame, kFrameOut sets the
+	// palMorphIsOn flag back to false.
+	kStub(s, argc, argv);
+	return NULL_REG;
+
 reg_t kPalVaryUnknown(EngineState *s, int argc, reg_t *argv) {
 	// TODO: Unknown (seems to be SCI32 exclusive)
 	return kStub(s, argc, argv);
-- 
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