AGI: Fix bug #3080041 - "AGI Mother Goose: White bar in intro"

3 files changed, 5 insertions, 4 deletions

diff --git a/engines/agi/agi.h b/engines/agi/agi.h
index c2af0c5c6e..189eb7ddff 100644
--- a/engines/agi/agi.h
+++ b/engines/agi/agi.h
@@ -1076,7 +1076,7 @@ public:
 	char *agiSprintf(const char *);
 	void writeStatus();
 	void writePrompt();
-	void clearPrompt();
+	void clearPrompt(bool useBlackBg = false);
 	void clearLines(int, int, int);
 	void flushLines(int, int);
 	bool predictiveDialog();
diff --git a/engines/agi/op_cmd.cpp b/engines/agi/op_cmd.cpp
index 23ccee2e5d..d1db9564b3 100644
--- a/engines/agi/op_cmd.cpp
+++ b/engines/agi/op_cmd.cpp
@@ -1442,7 +1442,8 @@ void cmdPreventInput(AgiGame *state, uint8 *p) {
 	state->_vm->newInputMode(INPUT_NONE);
 	state->inputEnabled = false;
 
-	state->_vm->clearPrompt();
+	// Always clear with black background. Fixes bug #3080041.
+	state->_vm->clearPrompt(true);
 }
 
 void cmdGetString(AgiGame *state, uint8 *p) {
diff --git a/engines/agi/text.cpp b/engines/agi/text.cpp
index 9ac60c0e67..9ac416e70e 100644
--- a/engines/agi/text.cpp
+++ b/engines/agi/text.cpp
@@ -676,11 +676,11 @@ void AgiEngine::writePrompt() {
 	_gfx->doUpdate();
 }
 
-void AgiEngine::clearPrompt() {
+void AgiEngine::clearPrompt(bool useBlackBg) {
 	int l;
 
 	l = _game.lineUserInput;
-	clearLines(l, l, _game.colorBg);
+	clearLines(l, l, useBlackBg ? 0 : _game.colorBg);
 	flushLines(l, l);
 
 	_gfx->doUpdate();