AGI: Add heuristic to detect delay loops within scripts

And in that case poll events, delay for a few milliseconds and
update screen.
This somewhat worked before the graphics rewrite because of
a timer hack.
This one tries to detect actual inner loops.
Happens in at least Police Quest 1 when playing poker.

1 files changed, 3 insertions, 0 deletions

diff --git a/engines/agi/cycle.cpp b/engines/agi/cycle.cpp
index a3873a0184..9b7dc63df8 100644
--- a/engines/agi/cycle.cpp
+++ b/engines/agi/cycle.cpp
@@ -142,6 +142,9 @@ void AgiEngine::interpretCycle() {
 	oldScore = getVar(VM_VAR_SCORE);
 	oldSound = getFlag(VM_FLAG_SOUND_ON);
 
+	// Reset script heuristic here
+	resetGetVarSecondsHeuristic();
+
 	_game.exitAllLogics = false;
 	while (runLogic(0) == 0 && !(shouldQuit() || _restartGame)) {
 		setVar(VM_VAR_WORD_NOT_FOUND, 0);