514->515 initial

adds _version.dm compatibility file + core/math/math.dm dependency
adds polyvis.html tool to go along with math.dm
converts uses of n_ceil to ceil

code/_macros.dm

@@ -62,3 +62,11 @@
 
 //check if all bitflags specified are present
 #define CHECK_MULTIPLE_BITFIELDS(flagvar, flags)	((flagvar & (flags)) == flags)
+
+
+/// Right-shift of INT by BITS
+#define SHIFTR(INT, BITS) ((INT) >> (BITS))
+
+
+/// Left-shift of INT by BITS
+#define SHIFTL(INT, BITS) ((INT) << (BITS))

code/_version.dm

@@ -0,0 +1,69 @@
+#if DM_VERSION < 515
+
+#define call_ext(ARGS...) call(ARGS)
+
+/proc/ceil(number)
+	return -round(-number)
+
+/proc/floor(number)
+	return round(number)
+
+/proc/fract(number)
+	return number - trunc(number)
+
+/proc/ftime()
+	throw EXCEPTION("ftime not available below 515")
+
+/proc/get_steps_to()
+	throw EXCEPTION("get_steps_to not available below 515")
+
+/proc/isinf(number)
+	return number == POSITIVE_INFINITY || number == NEGATIVE_INFINITY
+
+/proc/isnan(number)
+	return isnum(number) && number != number
+
+/proc/ispointer()
+	throw EXCEPTION("ispointer not available below 515")
+
+/proc/nameof(thing)
+	throw EXCEPTION("nameof not available below 515")
+
+/proc/noise_hash()
+	throw EXCEPTION("noise_hash not available below 515")
+
+/proc/refcount(datum)
+	throw EXCEPTION("refcount not available below 515")
+
+/proc/trimtext(text)
+	var/static/regex/pattern
+	if (!pattern)
+		pattern = regex(@"^\s*(.*?)\s*$", "g")
+	return replacetext_char(text, pattern, "$1")
+
+/proc/trunc(number)
+	if (number < 0)
+		return -round(-number)
+	return round(number)
+
+/client/proc/RenderIcon(atom)
+	throw EXCEPTION("client::RenderIcon() not available below 515")
+
+/* lists cannot have new procs. But if they could:
+/list/proc/RemoveAll()
+	var/result = 0
+	for (var/entry in args)
+		while (Remove(entry))
+			++result
+	return result
+*/
+
+#define ANIMATION_SLICE 8
+#define ANIMATION_CONTINUE 512
+
+#define JSON_PRETTY_PRINT 1
+
+#define JSON_STRICT 1
+#define JSON_ALLOW_COMMENTS 2
+
+#endif

code/core/math/math.dm

@@ -0,0 +1,119 @@
+/// IEEE 754-1985 positive infinity. As text, win: 1.#INF, lin: inf
+var/global/const/POSITIVE_INFINITY = 1#INF
+
+/// IEEE 754-1985 negative infinity. As text, win: -1.#INF, -lin: inf
+var/global/const/NEGATIVE_INFINITY = -1#INF
+
+// IEEE 754-1985 positive NaN. Creatable but not useful. As text, win: 1.#QNAN, lin: nan
+//var/const/POSITIVE_NAN = -(1#INF/1#INF)
+
+// IEEE 754-1985 nevative NaN. Creatable but not useful. As text, win: -1.#IND, lin: -nan
+//var/const/NEGATIVE_NAN = (1#INF/1#INF)
+
+/// Multiplier for converting degrees to radians, rounded to 10 places
+var/global/const/DEG_TO_RAD = 0.0174532925
+
+/// Multiplier for converting radians to degrees, rounded to 10 places
+var/global/const/RAD_TO_DEG = 57.295779513
+
+/// The mathematical constant pi, rounded to 10 places
+var/global/const/PI = 3.1415926536
+
+/// Twice the mathematical constant pi, rounded to 10 places
+var/global/const/TWO_PI = 6.2831853072
+
+/// Half the mathematical constant pi, rounded to 10 places
+var/global/const/HALF_PI = 1.5707963268
+
+
+/// True if number is a number that is not nan or an infinity.
+/proc/isfinite(number)
+	return isnum(number) && !isnan(number) && !isinf(number)
+
+
+/**
+Sample t(0..1) into a quadratic binomial polynomial.
+Generally this is useful for shaping rand() distribution.
+see tools/polyvis.html for a parameter picker.
+*/
+/proc/poly_interp2(t, p0, p1, p2)
+	var/mt = 1 - t
+	return p0 * mt * mt +\
+		2 * p1 * mt * t +\
+		p2 * t * t
+
+/**
+Sample t(0..1) into a cubic binomial polynomial.
+Generally this is useful for shaping rand() distribution.
+see tools/polyvis.html for a parameter picker.
+More expensive than poly_interp2.
+*/
+/proc/poly_interp3(t, p0, p1, p2, p3)
+	var/t2 = t * t
+	var/mt = 1 - t
+	var/mt2 = mt * mt
+	return p0 * mt2 * mt +\
+		3 * p1 * mt2 * t +\
+		3 * p2 * mt * t2 +\
+		p3 * t2 * t
+
+/**
+Sample t(0..1) into a quartic binomial polynomial.
+Generally this is useful for shaping rand() distribution.
+see tools/polyvis.html for a parameter picker.
+More expensive than poly_interp3.
+*/
+/proc/poly_interp4(t, p0, p1, p2, p3, p4)
+	var/t2 = t * t
+	var/t3 = t2 * t
+	var/mt = 1 - t
+	var/mt2 = mt * mt
+	var/mt3 = mt2 * mt
+	return p0 * mt3 * mt +\
+		4 * p1 * mt3 * t +\
+		6 * p2 * mt2 * t2 +\
+		4 * p3 * mt * t3 +\
+		p4 * t3 * t
+
+
+/**
+Get the coordinates that make up a circle of radius on center, packed as (x | y left shift 12).
+These coordinates are able to be outside the world: check (v < 1 || v > world.maxV) for safety.
+Implements the Bresenham Circle Drawing Algorithm for the actual point picking.
+*/
+/proc/get_circle_coordinates(radius, center_x, center_y)
+	var/static/list/cache = list()
+	radius = round(radius, 1)
+	if (radius < 1)
+		return list(center_x | SHIFTL(center_y, 12))
+	center_x = round(center_x, 1)
+	center_y = round(center_y, 1)
+	var/list/points = length(cache) ? cache["[radius]"] : null
+	if (!points)
+		points = list()
+		var/y = radius
+		var/gradient = 3 - 2 * radius
+		for (var/x = 0 to radius)
+			points |= list(
+				radius + x | SHIFTL(radius + y, 12),
+				radius + x | SHIFTL(radius - y, 12),
+				radius - x | SHIFTL(radius + y, 12),
+				radius - x | SHIFTL(radius - y, 12),
+				radius + y | SHIFTL(radius + x, 12),
+				radius + y | SHIFTL(radius - x, 12),
+				radius - y | SHIFTL(radius + x, 12),
+				radius - y | SHIFTL(radius - x, 12)
+			)
+			if (x >= y)
+				break
+			if (gradient < 0)
+				gradient = gradient + 4 * x + 6
+			else
+				gradient = gradient + 4 * (x - y) + 10
+				--y
+		cache["[radius]"] = points
+	var/list/result = points.Copy()
+	var/center = center_x - radius | SHIFTL(center_y - radius, 12)
+	for (var/i = 1 to length(result))
+		result[i] += center
+	return result

code/modules/food/food/sandwich.dm

@@ -71,7 +71,7 @@
 
 	name = lowertext("[fullname] sandwich")
 	if(length(name) > 80) name = "[pick(list("absurd","colossal","enormous","ridiculous"))] sandwich"
-	w_class = n_ceil(clamp((ingredients.len/2),2,4))
+	w_class = ceil(clamp((ingredients.len/2),2,4))
 
 /obj/item/reagent_containers/food/snacks/csandwich/Destroy()
 	for(var/obj/item/O in ingredients)

code/modules/random_map/drop/droppod.dm

@@ -41,8 +41,8 @@
 /datum/random_map/droppod/generate_map()
 
 	// No point calculating these 200 times.
-	var/x_midpoint = n_ceil(limit_x / 2)
-	var/y_midpoint = n_ceil(limit_y / 2)
+	var/x_midpoint = ceil(limit_x / 2)
+	var/y_midpoint = ceil(limit_y / 2)
 
 	// Draw walls/floors/doors.
 	for(var/x = 1, x <= limit_x, x++)
@@ -80,7 +80,7 @@
 
 /datum/random_map/droppod/apply_to_map()
 	if(placement_explosion_dev || placement_explosion_heavy || placement_explosion_light || placement_explosion_flash)
-		var/turf/T = locate((origin_x + n_ceil(limit_x / 2)-1), (origin_y + n_ceil(limit_y / 2)-1), origin_z)
+		var/turf/T = locate((origin_x + ceil(limit_x / 2)-1), (origin_y + ceil(limit_y / 2)-1), origin_z)
 		if(istype(T))
 			explosion(T, placement_explosion_dev, placement_explosion_heavy, placement_explosion_light, placement_explosion_flash)
 			sleep(15) // Let the explosion finish proccing before we ChangeTurf(), otherwise it might destroy our spawned objects.
@@ -97,8 +97,8 @@
 
 // Pods are circular. Get the direction this object is facing from the center of the pod.
 /datum/random_map/droppod/get_spawn_dir(var/x, var/y)
-	var/x_midpoint = n_ceil(limit_x / 2)
-	var/y_midpoint = n_ceil(limit_y / 2)
+	var/x_midpoint = ceil(limit_x / 2)
+	var/y_midpoint = ceil(limit_y / 2)
 	if(x == x_midpoint && y == y_midpoint)
 		return null
 	var/turf/target = locate(origin_x+x-1, origin_y+y-1, origin_z)
@@ -224,4 +224,4 @@
 	else
 		return
 
-	new /datum/random_map/droppod(null, usr.x-1, usr.y-1, usr.z, supplied_drops = spawned_mobs, automated = automatic_pod)
+	new /datum/random_map/droppod(null, usr.x-1, usr.y-1, usr.z, supplied_drops = spawned_mobs, automated = automatic_pod)

code/modules/random_map/meteor/meteor.dm

@@ -34,8 +34,8 @@
 /datum/random_map/meteor/generate_map()
 
 	// No point calculating these 200 times.
-	var/x_midpoint = n_ceil(limit_x / 2)
-	var/y_midpoint = n_ceil(limit_y / 2)
+	var/x_midpoint = ceil(limit_x / 2)
+	var/y_midpoint = ceil(limit_y / 2)
 
 	// Draw walls/floors
 	for(var/x = 1, x <= limit_x, x++)
@@ -72,7 +72,7 @@
 	if(!applied)
 		applied = TRUE
 		if(placement_explosion_dev || placement_explosion_heavy || placement_explosion_light || placement_explosion_flash)
-			var/turf/T = locate((origin_x + n_ceil(limit_x / 2)-1), (origin_y + n_ceil(limit_y / 2)-1), origin_z)
+			var/turf/T = locate((origin_x + ceil(limit_x / 2)-1), (origin_y + ceil(limit_y / 2)-1), origin_z)
 			if(istype(T))
 				explosion(T, placement_explosion_dev, placement_explosion_heavy, placement_explosion_light, placement_explosion_flash)
 				sleep(15) // Let the explosion finish proccing before we ChangeTurf(), otherwise it might destroy our spawned objects.
@@ -89,8 +89,8 @@
 
 // Meteors are circular. Get the direction this object is facing from the center of the pod.
 /datum/random_map/meteor/get_spawn_dir(var/x, var/y)
-	var/x_midpoint = n_ceil(limit_x / 2)
-	var/y_midpoint = n_ceil(limit_y / 2)
+	var/x_midpoint = ceil(limit_x / 2)
+	var/y_midpoint = ceil(limit_y / 2)
 	if(x == x_midpoint && y == y_midpoint)
 		return null
 	var/turf/target = locate(origin_x+x-1, origin_y+y-1, origin_z)