From c7f3a4f578b86b54572500322cc55cf0893634c9 Mon Sep 17 00:00:00 2001
From: Bastien Bouclet
Date: Sat, 14 May 2011 19:26:33 +0200
Subject: MOHAWK: Implement page drop button for Myst

---
 engines/mohawk/dialogs.cpp | 10 +++++++++-
 engines/mohawk/dialogs.h   |  1 +
 engines/mohawk/myst.cpp    | 41 +++++++++++++++++++++++++++++++++++++++++
 engines/mohawk/myst.h      |  3 +++
 4 files changed, 54 insertions(+), 1 deletion(-)

(limited to 'engines')

diff --git a/engines/mohawk/dialogs.cpp b/engines/mohawk/dialogs.cpp
index eee5b152ee..22a9d2d6c6 100644
--- a/engines/mohawk/dialogs.cpp
+++ b/engines/mohawk/dialogs.cpp
@@ -79,7 +79,8 @@ void PauseDialog::handleKeyDown(Common::KeyState state) {
 enum {
 	kZipCmd = 'ZIPM',
 	kTransCmd = 'TRAN',
-	kWaterCmd = 'WATR'
+	kWaterCmd = 'WATR',
+	kDropCmd = 'DROP'
 };
 
 #ifdef ENABLE_MYST
@@ -87,6 +88,7 @@ enum {
 MystOptionsDialog::MystOptionsDialog(MohawkEngine_Myst* vm) : GUI::OptionsDialog("", 120, 120, 360, 200), _vm(vm) {
 	_zipModeCheckbox = new GUI::CheckboxWidget(this, 15, 10, 300, 15, _("~Z~ip Mode Activated"), 0, kZipCmd);
 	_transitionsCheckbox = new GUI::CheckboxWidget(this, 15, 30, 300, 15, _("~T~ransitions Enabled"), 0, kTransCmd);
+	_dropPageButton = new GUI::ButtonWidget(this, 15, 60, 100, 25, _("~D~rop Page"), 0, kDropCmd);
 
 	new GUI::ButtonWidget(this, 95, 160, 120, 25, _("~O~K"), 0, GUI::kOKCmd);
 	new GUI::ButtonWidget(this, 225, 160, 120, 25, _("~C~ancel"), 0, GUI::kCloseCmd);
@@ -98,6 +100,8 @@ MystOptionsDialog::~MystOptionsDialog() {
 void MystOptionsDialog::open() {
 	Dialog::open();
 
+	_dropPageButton->setEnabled(_vm->_gameState->_globals.heldPage != 0);
+
 	_zipModeCheckbox->setState(_vm->_gameState->_globals.zipMode);
 	_transitionsCheckbox->setState(_vm->_gameState->_globals.transitions);
 }
@@ -110,6 +114,10 @@ void MystOptionsDialog::handleCommand(GUI::CommandSender *sender, uint32 cmd, ui
 	case kTransCmd:
 		_vm->_gameState->_globals.transitions = _transitionsCheckbox->getState();
 		break;
+	case kDropCmd:
+		_vm->_needsPageDrop = true;
+		close();
+		break;
 	case GUI::kCloseCmd:
 		close();
 		break;
diff --git a/engines/mohawk/dialogs.h b/engines/mohawk/dialogs.h
index 5cadf95574..8aa9d0fbee 100644
--- a/engines/mohawk/dialogs.h
+++ b/engines/mohawk/dialogs.h
@@ -81,6 +81,7 @@ private:
 	MohawkEngine_Myst *_vm;
 	GUI::CheckboxWidget *_zipModeCheckbox;
 	GUI::CheckboxWidget *_transitionsCheckbox;
+	GUI::ButtonWidget *_dropPageButton;
 };
 
 #endif
diff --git a/engines/mohawk/myst.cpp b/engines/mohawk/myst.cpp
index 44bfd16e12..4ee078cfc1 100644
--- a/engines/mohawk/myst.cpp
+++ b/engines/mohawk/myst.cpp
@@ -340,7 +340,13 @@ Common::Error MohawkEngine_Myst::run() {
 						drawResourceRects();
 					break;
 				case Common::KEYCODE_F5:
+					_needsPageDrop = false;
 					runDialog(*_optionsDialog);
+
+					if (_needsPageDrop) {
+						dropPage();
+						_needsPageDrop = false;
+					}
 					break;
 				default:
 					break;
@@ -1178,4 +1184,39 @@ bool MohawkEngine_Myst::canSaveGameStateCurrently() {
 	return false;
 }
 
+void MohawkEngine_Myst::dropPage() {
+    uint16 page = _gameState->_globals.heldPage;
+	bool whitePage = page == 13;
+	bool bluePage = page - 1 < 6;
+    bool redPage = page - 7 < 6;
+
+    // Drop page
+    _gameState->_globals.heldPage = 0;
+
+    // Redraw page area
+    if (whitePage && _gameState->_globals.currentAge == 2) {
+    	redrawArea(41);
+    } else if (bluePage) {
+    	if (page == 6) {
+    		if (_gameState->_globals.currentAge == 2)
+    			redrawArea(24);
+    	} else {
+    		redrawArea(103);
+    	}
+    } else if (redPage) {
+    	if (page == 12) {
+    		if (_gameState->_globals.currentAge == 2)
+    			redrawArea(25);
+    	} else if (page == 10) {
+    		if (_gameState->_globals.currentAge == 1)
+    			redrawArea(35);
+    	} else {
+    		redrawArea(102);
+    	}
+    }
+
+    setMainCursor(kDefaultMystCursor);
+    checkCursorHints();
+}
+
 } // End of namespace Mohawk
diff --git a/engines/mohawk/myst.h b/engines/mohawk/myst.h
index aeb0d4c83e..e12388373e 100644
--- a/engines/mohawk/myst.h
+++ b/engines/mohawk/myst.h
@@ -165,6 +165,7 @@ public:
 
 	bool _tweaksEnabled;
 	bool _needsUpdate;
+	bool _needsPageDrop;
 
 	MystView _view;
 	MystGraphics *_gfx;
@@ -207,6 +208,8 @@ private:
 
 	bool _runExitScript;
 
+	void dropPage();
+
 	void loadCard();
 	void unloadCard();
 	void runInitScript();
-- 
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