DREAMWEB: Simplify some uses of randomNumber()

Our random number generator isn't restricted to producing numbers
between 0 and 255. We can just ask it for the desired range.

4 files changed, 8 insertions, 16 deletions

diff --git a/engines/dreamweb/monitor.cpp b/engines/dreamweb/monitor.cpp
index cdef60e94d..95aa400c3a 100644
--- a/engines/dreamweb/monitor.cpp
+++ b/engines/dreamweb/monitor.cpp
@@ -320,7 +320,7 @@ void DreamWebEngine::randomAccess(uint16 count) {
 	for (uint16 i = 0; i < count; ++i) {
 		vSync();
 		vSync();
-		uint16 v = randomNumber() & 15;
+		uint16 v = _rnd.getRandomNumber(15);
 		if (v < 10)
 			accessLightOff();
 		else
diff --git a/engines/dreamweb/people.cpp b/engines/dreamweb/people.cpp
index 316a1689c9..dfb5c62618 100644
--- a/engines/dreamweb/people.cpp
+++ b/engines/dreamweb/people.cpp
@@ -262,7 +262,7 @@ void DreamWebEngine::gamer(ReelRoutine &routine) {
 	if (checkSpeed(routine)) {
 		uint8 v;
 		do {
-			v = 20 + randomNumber() % 5;
+			v = _rnd.getRandomNumberRng(20, 24);
 		} while (v == routine.reelPointer());
 		routine.setReelPointer(v);
 	}
diff --git a/engines/dreamweb/rain.cpp b/engines/dreamweb/rain.cpp
index 0a8ee2a38e..7db4744cbf 100644
--- a/engines/dreamweb/rain.cpp
+++ b/engines/dreamweb/rain.cpp
@@ -104,8 +104,8 @@ void DreamWebEngine::splitIntoLines(uint8 x, uint8 y) {
 		}
 
 		rain.size = length;
-		rain.w3 = (randomNumber() << 8) | randomNumber();
-		rain.b5 = (randomNumber() & 3) + 4;
+		rain.w3 = _rnd.getRandomNumber(65535);
+		rain.b5 = _rnd.getRandomNumberRng(4, 7);
 		_rainList.push_back(rain);
 	} while (x > 0 && y < _mapYSize);
 }
@@ -170,11 +170,7 @@ void DreamWebEngine::initRain() {
 	// start lines of rain from top of screen
 	uint8 x = 4;
 	do {
-		uint8 delta;
-		do {
-			delta = (randomNumber() & 31) + 3;
-		} while (delta >= rainSpacing);
-
+		uint8 delta = _rnd.getRandomNumberRng(3, rainSpacing - 1);
 		x += delta;
 		if (x >= _mapXSize)
 			break;
@@ -185,11 +181,7 @@ void DreamWebEngine::initRain() {
 	// start lines of rain from side of screen
 	uint8 y = 0;
 	do {
-		uint8 delta;
-		do {
-			delta = (randomNumber() & 31) + 3;
-		} while (delta >= rainSpacing);
-
+		uint8 delta = _rnd.getRandomNumberRng(3, rainSpacing - 1);
 		y += delta;
 		if (y >= _mapYSize)
 			break;
diff --git a/engines/dreamweb/sprite.cpp b/engines/dreamweb/sprite.cpp
index 4bbc31b54e..3df324abe1 100644
--- a/engines/dreamweb/sprite.cpp
+++ b/engines/dreamweb/sprite.cpp
@@ -263,8 +263,8 @@ void DreamWebEngine::constant(Sprite *sprite, SetObject *objData) {
 }
 
 void DreamWebEngine::randomSprite(Sprite *sprite, SetObject *objData) {
-	uint8 r = randomNumber();
-	sprite->frameNumber = objData->frames[r&7];
+	uint8 r = _rnd.getRandomNumber(7);
+	sprite->frameNumber = objData->frames[r];
 }
 
 void DreamWebEngine::doorway(Sprite *sprite, SetObject *objData) {