From c531c4c1eafbf66a3724df0f3cb7b9ad8da97a8d Mon Sep 17 00:00:00 2001
From: Filippos Karapetis
Date: Sun, 25 Dec 2011 17:32:56 +0200
Subject: DREAMWEB: Port 'swapwithinv' to C++

---
 engines/dreamweb/object.cpp | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'engines/dreamweb/object.cpp')

diff --git a/engines/dreamweb/object.cpp b/engines/dreamweb/object.cpp
index 8399c6f26a..9eb31f438f 100644
--- a/engines/dreamweb/object.cpp
+++ b/engines/dreamweb/object.cpp
@@ -902,4 +902,47 @@ void DreamGenContext::useOpened() {
 	delPointer();
 }
 
+void DreamGenContext::swapWithInv() {
+	uint16 subject = (data.byte(kObjecttype) << 8) | data.byte(kItemframe);
+	if (subject == data.word(kOldsubject)) {
+		if (data.byte(kCommandtype) != 243) {
+			data.byte(kCommandtype) = 243;
+			data.word(kOldsubject) = subject;
+			commandWithOb(34, data.byte(kObjecttype), data.byte(kItemframe));
+		}
+	} else {
+		data.word(kOldsubject) = subject;
+		commandWithOb(34, data.byte(kObjecttype), data.byte(kItemframe));
+	}
+
+	if (data.word(kMousebutton) == data.word(kOldbutton) || !(data.word(kMousebutton) & 1))
+		return;
+
+	byte prevType = data.byte(kObjecttype);
+	byte prevFrame = data.byte(kItemframe);
+	uint16 objectId = getSegment(data.word(kBuffers)).word(findInvPosCPP());
+	data.byte(kItemframe)  = objectId & 0x00FF;
+	data.byte(kObjecttype) = objectId >> 8;
+	DynObject *object = getEitherAdCPP();
+	object->mapad[0] = 20;
+	object->mapad[1] = 255;
+	byte prevType2 = data.byte(kObjecttype);
+	byte prevFrame2 = data.byte(kItemframe);
+	data.byte(kObjecttype) = prevType;
+	data.byte(kItemframe) = prevFrame;
+	//findInvPosCPP();	// found in the original source, but it seems to be useless
+	delPointer();
+	object = getEitherAdCPP();
+	object->mapad[0] = 4;
+	object->mapad[1] = 255;
+	object->mapad[2] = data.byte(kLastinvpos);
+	data.byte(kObjecttype) = prevType2;
+	data.byte(kItemframe) = prevFrame2;
+	fillRyan();
+	readMouse();
+	showPointer();
+	workToScreenCPP();
+	delPointer();
+}
+
 } // End of namespace DreamGen
-- 
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