Replacing more C-style for loops with the faster, traditional ones. (#62908)

code/game/objects/effects/decals/cleanable/aliens.dm

@@ -34,7 +34,7 @@
 /obj/effect/decal/cleanable/xenoblood/xgibs/proc/streak(list/directions, mapload=FALSE)
 	set waitfor = FALSE
 	var/direction = pick(directions)
-	for(var/i = 0, i < pick(1, 200; 2, 150; 3, 50; 4, 17; 50), i++) //the 3% chance of 50 steps is intentional and played for laughs.
+	for(var/i in 1 to pick(1, 200; 2, 150; 3, 50; 4, 17; 50)) //the 3% chance of 50 steps is intentional and played for laughs.
 		if (!mapload)
 			sleep(2)
 		if(i > 0)

code/game/objects/effects/decals/cleanable/robots.dm

@@ -20,7 +20,7 @@
 /obj/effect/decal/cleanable/robot_debris/proc/streak(list/directions, mapload=FALSE)
 	set waitfor = FALSE
 	var/direction = pick(directions)
-	for (var/i = 0, i < pick(1, 200; 2, 150; 3, 50; 4, 17; 50), i++) //the 3% chance of 50 steps is intentional and played for laughs.
+	for (var/i in 1 to pick(1, 200; 2, 150; 3, 50; 4, 17; 50)) //the 3% chance of 50 steps is intentional and played for laughs.
 		if (!mapload)
 			sleep(2)
 		if (i > 0)

code/game/objects/effects/effect_system/effects_smoke.dm

@@ -24,7 +24,7 @@
 	if(frames == 0)
 		frames = 1 //We will just assume that by 0 frames, the coder meant "during one frame".
 	var/step = alpha / frames
-	for(var/i = 0, i < frames, i++)
+	for(var/i in 1 to frames)
 		alpha -= step
 		if(alpha < 160)
 			set_opacity(0) //if we were blocking view, we aren't now because we're fading out

code/game/objects/effects/spawners/gibspawner.dm

@@ -42,9 +42,9 @@
 		dna_to_add = list("Non-human DNA" = random_blood_type()) //else, generate a random bloodtype for it.
 
 
-	for(var/i = 1, i<= gibtypes.len, i++)
+	for(var/i in 1 to gibtypes.len)
 		if(gibamounts[i])
-			for(var/j = 1, j<= gibamounts[i], j++)
+			for(var/j in 1 to gibamounts[i])
 				var/gibType = gibtypes[i]
 				gib = new gibType(loc, diseases)