From 28c3aa3024e37e4c7921665863981973c6455eae Mon Sep 17 00:00:00 2001
From: D G Turner
Date: Mon, 16 Jul 2012 14:06:27 +0100
Subject: TEENAGENT: Migrate two more dseg regions to symbolic addresses.

---
 engines/teenagent/resources.h   | 7 ++++++-
 engines/teenagent/scene.cpp     | 6 +++---
 engines/teenagent/teenagent.cpp | 6 +++---
 3 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/engines/teenagent/resources.h b/engines/teenagent/resources.h
index e1540f8500..7426b45248 100644
--- a/engines/teenagent/resources.h
+++ b/engines/teenagent/resources.h
@@ -31,7 +31,7 @@ struct ADGameDescription;
 
 namespace TeenAgent {
 
-// Code Segment Addresses
+// Code Segment Addresses (Read Only)
 // Intro function : 0x024c
 const uint16 csAddr_intro = 0x024c;
 // Display Message function : 0xa055
@@ -40,6 +40,8 @@ const uint16 csAddr_displayMsg = 0xa055;
 const uint16 csAddr_rejectMsg = 0xa4d6;
 
 // Data Segment Addresses
+// Cursor Graphic 8*12px : 0x00da to 0x0139 (Read Only)
+const uint16 dsAddr_cursor = 0x00da;
 // Reject Messages Address Pointers : (4 * 2-byte) = 0x339e to 0x33a5
 const uint16 dsAddr_rejectMsg = 0x339e;
 
@@ -47,6 +49,9 @@ const uint16 dsAddr_rejectMsg = 0x339e;
 const uint16 dsAddr_saveState = 0x6478;
 const uint16 saveStateSize = 0x777a;
 
+// Current Music Id Playing : 0xdb90
+const uint16 dsAddr_currentMusic = 0xdb90;
+
 class Resources {
 public:
 	void deinit();
diff --git a/engines/teenagent/scene.cpp b/engines/teenagent/scene.cpp
index fdb0acb59d..6bcc606df5 100644
--- a/engines/teenagent/scene.cpp
+++ b/engines/teenagent/scene.cpp
@@ -413,8 +413,8 @@ void Scene::init(int id, const Common::Point &pos) {
 	// check music
 	int now_playing = _vm->music->getId();
 
-	if (now_playing != _vm->res->dseg.get_byte(0xdb90))
-		_vm->music->load(_vm->res->dseg.get_byte(0xdb90));
+	if (now_playing != _vm->res->dseg.get_byte(dsAddr_currentMusic))
+		_vm->music->load(_vm->res->dseg.get_byte(dsAddr_currentMusic));
 
 	_vm->_system->copyRectToScreen(background.pixels, background.pitch, 0, 0, background.w, background.h);
 	setPalette(0);
@@ -1065,7 +1065,7 @@ bool Scene::processEventQueue() {
 		case SceneEvent::kPlayMusic:
 			debugC(0, kDebugScene, "setting music %u", current_event.music);
 			_vm->setMusic(current_event.music);
-			_vm->res->dseg.set_byte(0xdb90, current_event.music);
+			_vm->res->dseg.set_byte(dsAddr_currentMusic, current_event.music);
 			current_event.clear();
 			break;
 
diff --git a/engines/teenagent/teenagent.cpp b/engines/teenagent/teenagent.cpp
index bf626e2aff..08c436bf25 100644
--- a/engines/teenagent/teenagent.cpp
+++ b/engines/teenagent/teenagent.cpp
@@ -248,7 +248,7 @@ Common::Error TeenAgentEngine::loadGameState(int slot) {
 	inventory->activate(false);
 	inventory->reload();
 
-	setMusic(res->dseg.get_byte(0xdb90));
+	setMusic(res->dseg.get_byte(dsAddr_currentMusic));
 
 	int id = res->dseg.get_byte(0xb4f3);
 	uint16 x = res->dseg.get_word(0x64af), y = res->dseg.get_word(0x64b1);
@@ -542,7 +542,7 @@ Common::Error TeenAgentEngine::run() {
 
 	init();
 
-	CursorMan.pushCursor(res->dseg.ptr(0x00da), 8, 12, 0, 0, 1);
+	CursorMan.pushCursor(res->dseg.ptr(dsAddr_cursor), 8, 12, 0, 0, 1);
 
 	syncSoundSettings();
 
@@ -1042,7 +1042,7 @@ void TeenAgentEngine::setMusic(byte id) {
 	debugC(0, kDebugMusic, "starting music %u", id);
 
 	if (id != 1) // intro music
-		*res->dseg.ptr(0xdb90) = id;
+		res->dseg.set_byte(dsAddr_currentMusic, id);
 
 	if (_gameDescription->flags & ADGF_CD) {
 		byte track2cd[] = {7, 2, 0, 9, 3, 6, 8, 10, 4, 5, 11};
-- 
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