Don't change mouse cursors so ridiculously often.

svn-id: r45451

3 files changed, 38 insertions, 19 deletions

diff --git a/engines/draci/game.cpp b/engines/draci/game.cpp
index f771c564f0..73a5a34d9a 100644
--- a/engines/draci/game.cpp
+++ b/engines/draci/game.cpp
@@ -463,16 +463,11 @@ void Game::updateCursor() {
 	if (_loopStatus == kStatusDialogue)
 		return;
 
+	bool mouseChanged = false;
+
 	// If we are in inventory mode, we do a different kind of updating that handles
 	// inventory items and return early
 	if (_loopStatus == kStatusInventory && _loopSubstatus == kSubstatusOrdinary) {
-
-		if (_currentItem == kNoItem) {
-			_vm->_mouse->setCursorType(kNormalCursor);
-		} else {
-			_vm->_mouse->loadItemCursor(_currentItem);
-		}
-
 		if (_itemUnderCursor != kNoItem) {
 			const GameItem *item = &_items[_itemUnderCursor];
 
@@ -482,6 +477,14 @@ void Game::updateCursor() {
 				} else {
 					_vm->_mouse->loadItemCursor(_currentItem, true);
 				}
+				mouseChanged = true;
+			}
+		}
+		if (!mouseChanged) {
+			if (_currentItem == kNoItem) {
+				_vm->_mouse->setCursorType(kNormalCursor);
+			} else {
+				_vm->_mouse->loadItemCursor(_currentItem);
 			}
 		}
 
@@ -498,14 +501,6 @@ void Game::updateCursor() {
 		_oldObjUnderCursor = _objUnderCursor;
 	}
 
-	// Load the appropriate cursor (item image if an item is held or ordinary cursor
-	// if not)
-	if (_currentItem == kNoItem) {
-		_vm->_mouse->setCursorType(kNormalCursor);
-	} else {
-		_vm->_mouse->loadItemCursor(_currentItem);
-	}
-
 	// TODO: Handle main menu
 
 	// If there is no game object under the cursor, try using the room itself
@@ -516,6 +511,7 @@ void Game::updateCursor() {
 			} else {
 				_vm->_mouse->loadItemCursor(_currentItem, true);
 			}
+			mouseChanged = true;
 		}
 	// If there *is* a game object under the cursor, update the cursor image
 	} else {
@@ -531,11 +527,22 @@ void Game::updateCursor() {
 				} else {
 					_vm->_mouse->loadItemCursor(_currentItem, true);
 				}
+				mouseChanged = true;
 			}
 		// If the walking direction *is* set, the game object is a gate, so update
 		// the cursor image to the appropriate arrow.
 		} else {
 			_vm->_mouse->setCursorType((CursorType)obj->_walkDir);
+			mouseChanged = true;
+		}
+	}
+	// Load the appropriate cursor (item image if an item is held or ordinary cursor
+	// if not)
+	if (!mouseChanged) {
+		if (_currentItem == kNoItem) {
+			_vm->_mouse->setCursorType(kNormalCursor);
+		} else {
+			_vm->_mouse->loadItemCursor(_currentItem);
 		}
 	}
 }
diff --git a/engines/draci/mouse.cpp b/engines/draci/mouse.cpp
index f5eb2bbf4d..ae80775898 100644
--- a/engines/draci/mouse.cpp
+++ b/engines/draci/mouse.cpp
@@ -34,7 +34,7 @@ Mouse::Mouse(DraciEngine *vm) {
 	_y = 0;
 	_lButton = false;
 	_rButton = false;
-	_cursorType = kNormalCursor;
+	_cursorType = kUninitializedCursor;
 	_vm = vm;
 }
 
@@ -90,10 +90,13 @@ void Mouse::setPosition(uint16 x, uint16 y) {
 }
 
 void Mouse::setCursorType(CursorType cur) {
+	if (cur == getCursorType()) {
+		return;
+	}
 	_cursorType = cur;
 
 	const BAFile *f;
-	f = _vm->_iconsArchive->getFile(_cursorType);
+	f = _vm->_iconsArchive->getFile(cur);
 
 	Sprite sp(f->_data, f->_length, 0, 0, true);
 	CursorMan.replaceCursorPalette(_vm->_screen->getPalette(), 0, kNumColours);
@@ -102,8 +105,15 @@ void Mouse::setCursorType(CursorType cur) {
 }
 
 void Mouse::loadItemCursor(int itemID, bool highlighted) {
+	int archiveIndex = 2 * itemID + highlighted;
+	CursorType newCursor = static_cast<CursorType> (kItemCursor + archiveIndex);
+	if (newCursor == getCursorType()) {
+		return;
+	}
+	_cursorType = newCursor;
+
 	const BAFile *f;
-	f = _vm->_itemImagesArchive->getFile(2 * itemID + highlighted);
+	f = _vm->_itemImagesArchive->getFile(archiveIndex);
 
 	Sprite sp(f->_data, f->_length, 0, 0, true);
 	CursorMan.replaceCursorPalette(_vm->_screen->getPalette(), 0, kNumColours);
diff --git a/engines/draci/mouse.h b/engines/draci/mouse.h
index 629a7634d5..1dcd988ff5 100644
--- a/engines/draci/mouse.h
+++ b/engines/draci/mouse.h
@@ -39,7 +39,9 @@ enum CursorType {
 	kArrowCursor4,
 	kDialogueCursor,
 	kHighlightedCursor,
-	kMainMenuCursor
+	kMainMenuCursor,
+	kUninitializedCursor = 100,
+	kItemCursor			// + the index in the BArchive
 };
 
 class DraciEngine;