SCUMM: 2nd try to fix dungeon door timing

Shorten the timer delay does not work as escaping with a second kid is not possible too. Instead decrease engine speed during script execution.

1 files changed, 8 insertions, 0 deletions

diff --git a/engines/scumm/scumm.cpp b/engines/scumm/scumm.cpp
index f2db5ad6ba..61d38dc593 100644
--- a/engines/scumm/scumm.cpp
+++ b/engines/scumm/scumm.cpp
@@ -1964,6 +1964,14 @@ Common::Error ScummEngine::go() {
 		if (delta < 1)	// Ensure we don't get into an endless loop
 			delta = 1;  // by not decreasing sleepers.
 
+		// WORKAROUND: walking speed in the original v0/v1 interpreter 
+		// is sometimes slower (e.g. during scrolling) than in ScummVM.
+		// This is important for the door-closing action in the dungeon,
+		// otherwise (delta < 6) a single kid is able to escape. 
+		if ((_game.version == 0 && isScriptRunning(132)) || 
+			(_game.version == 1 && isScriptRunning(137)))
+			delta = 6;
+
 		// Wait...
 		waitForTimer(delta * 1000 / 60 - diff);