AVALANCHE: Implement GhostRoom::doBat().

1 files changed, 35 insertions, 5 deletions

diff --git a/engines/avalanche/ghostroom.cpp b/engines/avalanche/ghostroom.cpp
index aee8b4f48d..98dd90974a 100644
--- a/engines/avalanche/ghostroom.cpp
+++ b/engines/avalanche/ghostroom.cpp
@@ -40,8 +40,6 @@ GhostRoom::GhostRoom(AvalancheEngine *vm) {
 
 	_glerkStage = 0;
 	_aarghCount = 0;
-	_batX = _batY = 0;
-	_batCount = 0;
 	_greldetX = _greldetY = 0;
 	_greldetCount = 0;
 	_redGreldet = false;
@@ -78,7 +76,39 @@ void GhostRoom::wait(uint16 howLong) {
 }
 
 void GhostRoom::doBat() {
-	warning("STUB: doBat()");
+	static int16 batX = 277;
+	static int16 batY = 40;
+	static uint16 batCount = 0;
+
+	batCount++;
+
+	int8 dx, iy;
+	byte batImage;
+	if ((batCount % 2) == 1) {
+		if ((1 <= batCount) && (batCount <= 90)) {
+			dx = 2;
+			iy = 1;
+			batImage = 0;
+		} else if ((91 <= batCount) && (batCount <= 240)) {
+			dx = 1;
+			iy = 1;
+			batImage = 1;
+		} else if((241 <= batCount) && (batCount <= 260)) {
+			dx = 1;
+			iy = 4;
+			batImage = 2;
+		}
+
+		if ((batCount == 91) || (batCount == 241)) // When the bat changes, blank out the old one.
+			_vm->_graphics->drawFilledRectangle(Common::Rect(batX + _bat[batImage].w, batY, batX + _bat[batImage - 1].w, batY + _bat[batImage - 1].h), kColorBlack);
+
+		_vm->_graphics->drawFilledRectangle(Common::Rect(batX, batY, batX + _bat[batImage].w, batY + iy), kColorBlack);
+		_vm->_graphics->drawFilledRectangle(Common::Rect(batX + _bat[batImage].w - dx, batY, batX + _bat[batImage].w, batY + _bat[batImage].h), kColorBlack);
+
+		batX -= dx;
+		batY++;
+		_vm->_graphics->ghostDrawPicture(_bat[batImage], batX, batY);
+	}
 }
 
 void GhostRoom::bigGreenEyes(byte how) {
@@ -195,10 +225,10 @@ void GhostRoom::run() {
 			_glerkStage++;
 		}
 
-		_vm->_graphics->refreshScreen();
-
 		doBat();
 
+		_vm->_graphics->refreshScreen();
+
 		wait(15);
 	}