diff --git a/core/actions.py b/core/action.py
similarity index 86%
rename from core/actions.py
rename to core/action.py
index 270f9ea..a05cf78 100644
--- a/core/actions.py
+++ b/core/action.py
@@ -26,7 +26,7 @@ class TimedAction:
 					self.end(node)
 					
 				else:
-					self.progress(t - self.start_t, node)
+					self.progress((t - self.start_t) / float(self.duration_t), node)
 	
 	# REIMPLEMENT
 	
@@ -38,6 +38,6 @@ class TimedAction:
 		
 		pass
 		
-	def progress(self, rel_t, node):
+	def progress(self, prc, node):
 		
 		pass
\ No newline at end of file
diff --git a/core/actions/basics.py b/core/actions/basics.py
new file mode 100644
index 0000000..5287812
--- /dev/null
+++ b/core/actions/basics.py
@@ -0,0 +1,82 @@
+from ..action import TimedAction
+
+class PlayAction(TimedAction):	
+	
+	def __init__(self, start_t, duration_t, nodes, program):
+		
+		super().__init__(start_t, duration_t, nodes, program)
+		
+	def start(self, node):
+		
+		node.active = True
+		
+	def end(self, node):
+		
+		node.active = False
+		
+		
+class NoteAction(TimedAction):	
+	
+	def __init__(self, note, start_t, duration_t, nodes, program):
+		
+		super().__init__(start_t, duration_t, nodes, program)
+		self.note = note
+		
+	def start(self, node):
+		
+		node.freq = self.program.note_to_freq(self.note)
+		node.active = True
+		
+	def end(self, node):
+		
+		node.active = False
+		
+class LinearPitchTransition(TimedAction):
+	
+	def __init__(self, start_note, end_node, start_t, duration_t, nodes, program):
+		
+		super().__init__(start_t, duration_t, nodes, program)
+		self.start_note = start_note
+		self.end_node = end_node
+		
+		self.start_freq = self.program.note_to_freq(start_note)
+		self.end_freq = self.program.note_to_freq(end_node)
+		
+		self.freq_range = self.end_freq - self.start_freq
+		
+	def start(self, node):
+		
+		node.freq = self.start_freq 
+		node.active = True
+		
+	def progress(self, prc, node):
+		
+		node.freq = self.start_freq  + (self.freq_range * prc)
+		
+	def end(self, node):
+		
+		node.active = False
+		
+		
+class LinearSpatialTransition(TimedAction):
+	
+	def __init__(self, start_coords, end_coords, start_t, duration_t, nodes, program):
+		
+		super().__init__(start_t, duration_t, nodes, program)
+		self.start_coords = start_coords
+		self.end_coords = end_coords
+				
+		self.delta_coords = [end_coords[0] - start_coords[0], end_coords[1] - start_coords[1], end_coords[2] - start_coords[2]]
+		
+	def start(self, node):
+		
+		node.start_location = self.start_coords
+		
+	def progress(self, prc, node):
+		
+		l = []
+		l.append(self.start_coords[0] + (self.delta_coords[0] * prc))
+		l.append(self.start_coords[1] + (self.delta_coords[1] * prc))
+		l.append(self.start_coords[2] + (self.delta_coords[2] * prc))
+		node.start_location = tuple(l)
+		
\ No newline at end of file
diff --git a/core/nodes/sawtooth.py b/core/nodes/sawtooth.py
new file mode 100644
index 0000000..24ad6ce
--- /dev/null
+++ b/core/nodes/sawtooth.py
@@ -0,0 +1,27 @@
+import math
+
+from ..soundnode import SoundNode
+
+class SawtoothNode(SoundNode):
+	
+	def __init__(self, freq, room):
+	
+		super().__init__("saw", room)
+		self.freq = freq
+		self.harmonics_q = 50
+		self.active = False
+		self.volume = 0.5
+		
+	def calc_r_amps(self, t):
+		
+		if not self.active:
+			self.r_amps[t] = dict()
+			return
+		
+		if not t in self.r_amps:
+			self.r_amps[t] = dict()
+			
+		for i in range(0, self.harmonics_q):
+			
+			freq = self.freq*(i + 1)
+			self.r_amps[t][freq] = self.volume / float(i+1)
\ No newline at end of file
diff --git a/core/nodes/sinenode.py b/core/nodes/sinenode.py
index 598d021..3e8f558 100644
--- a/core/nodes/sinenode.py
+++ b/core/nodes/sinenode.py
@@ -1,14 +1,13 @@
 import math
 
 from ..soundnode import SoundNode
-from ..actions import TimedAction
 
 class SineNode(SoundNode):
 	
-	def __init__(self, freqs, room):
+	def __init__(self, freq, room):
 	
 		super().__init__("sine", room)
-		self.freqs = freqs
+		self.freq = freq
 		self.active = False
 		self.volume = 1
 		
@@ -17,44 +16,5 @@ class SineNode(SoundNode):
 		if not self.active:
 			self.r_amps[t] = dict()
 			return
-			
-		tdct = dict()
 		
-		for freq in self.freqs:
-			tdct[freq] = self.volume * math.sin(self.room.sine_multiplier * freq * t)
-		
-		self.r_amps[t] = tdct
-
-###
-		
-class PlayAction(TimedAction):	
-	
-	def __init__(self, start_t, duration_t, nodes, program):
-		
-		super().__init__(start_t, duration_t, nodes, program)
-		
-	def start(self, node):
-		
-		node.active = True
-		
-	def end(self, node):
-		
-		node.active = False
-		
-		
-class NoteAction(TimedAction):	
-	
-	def __init__(self, note, start_t, duration_t, nodes, program):
-		
-		super().__init__(start_t, duration_t, nodes, program)
-		self.note = note
-		
-	def start(self, node):
-		
-		note_freq = self.program.note_to_freq(self.note)
-		node.freqs = [note_freq]
-		node.active = True
-		
-	def end(self, node):
-		
-		node.active = False
\ No newline at end of file
+		self.r_amps[t] = {self.freq: self.volume}
diff --git a/core/nodes/sink.py b/core/nodes/sink.py
index 16208a5..97c0c9b 100644
--- a/core/nodes/sink.py
+++ b/core/nodes/sink.py
@@ -26,4 +26,7 @@ class SinkNode(SoundNode):
 					res[freq] = vol
 				else:
 					res[freq] += vol
-		self.r_amps[t] = res
\ No newline at end of file
+					
+		self.r_amps[t] = res
+		#if res:
+		#	print(self.r_amps[t])
\ No newline at end of file
diff --git a/core/nodes/triangle.py b/core/nodes/triangle.py
new file mode 100644
index 0000000..af7542b
--- /dev/null
+++ b/core/nodes/triangle.py
@@ -0,0 +1,33 @@
+import math
+
+from ..soundnode import SoundNode
+
+class TriangleNode(SoundNode):
+	
+	def __init__(self, freq, room):
+	
+		super().__init__("trg", room)
+		self.freq = freq
+		self.harmonics_q = 30
+		self.active = False
+		self.volume = 0.8
+		
+	def calc_r_amps(self, t):
+		
+		if not self.active:
+			self.r_amps[t] = dict()
+			return
+		
+		if not t in self.r_amps:
+			self.r_amps[t] = dict()
+			
+		for i in range(0, self.harmonics_q):
+			
+			freq = self.freq*(i*2 + 1)
+			
+			if i%2 == 0:
+				m = 1
+			else:
+				m = -1
+			
+			self.r_amps[t][freq] = m * self.volume / float((i*2 + 1)**2)
\ No newline at end of file
diff --git a/core/program.py b/core/program.py
index d65010c..c1589a7 100644
--- a/core/program.py
+++ b/core/program.py
@@ -1,8 +1,14 @@
 import os
 import wave
+import math
 
 from .room import Room
 
+TAU = 2 * math.pi
+
+def stb(i: int, bytelen: int) -> bytes:
+	return i.to_bytes(bytelen, byteorder='little', signed=True)
+
 
 class Program:
 	
@@ -66,13 +72,75 @@ class Program:
 		start_t = int(start_t_sec * self.room.sample_rate)
 		end_t = int(end_t_sec * self.room.sample_rate)
 			
+		order_of_passage = []
+			
 		for t in range(start_t, end_t):
 			
+			if t%1000 == 0:
+				print(f'{int(t / float(end_t - start_t) * 100)}%', end='\r')
+			
 			self.tick(t)
-			left_frame, right_frame = self.room.generate_frame(t)
+			
+			for node in self.room.nodes:
+				node.tick_done = False
+					
+			updates = True
+			
+			if not order_of_passage:
+				
+				while updates:
+					
+					updates = False
+					
+					for node in self.room.nodes:
+						
+						if not (t in node.r_amps):
+							
+							has_unprocessed_inputs = False
+							
+							for in_node in node.air_in:
+								if not in_node.tick_done:
+									has_unprocessed_inputs = True
+									break
+							
+							if not has_unprocessed_inputs:
+								for in_node in node.wire_in:
+									if not in_node.tick_done:
+										has_unprocessed_inputs = True
+										break
+										
+							if not has_unprocessed_inputs:
+								
+								node.calc_r_amps(t)
+								node.tick_done = True
+								updates = True
+								order_of_passage.append(node)
+												
+			else:
+				for node in order_of_passage:
+					node.calc_r_amps(t)
+		
+			left_total_amp = self.room.max_amp * sum([vol * math.sin(self.room.sine_multiplier * freq * t) for freq, vol in self.room.left_sink.r_amps[t].items()])
+			right_total_amp = self.room.max_amp * sum([vol * math.sin(self.room.sine_multiplier * freq * t)  for freq, vol in self.room.right_sink.r_amps[t].items()])
+			
+			if left_total_amp > self.room.max_amp:
+				left_total_amp = self.room.max_amp
+				
+			if left_total_amp < self.room.min_amp:
+				left_total_amp = self.room.min_amp
+			
+			if right_total_amp > self.room.max_amp:
+				right_total_amp = self.room.max_amp
+				
+			if right_total_amp < self.room.min_amp:
+				right_total_amp = self.room.min_amp
+				
+					
+			left_frame, right_frame = stb(int(left_total_amp), self.room.sample_width), stb(int(right_total_amp), self.room.sample_width)
 			
 			frames.append(left_frame)
 			frames.append(right_frame)
+		print('100%', end='\r')
 	
 		return frames
 			
@@ -105,11 +173,13 @@ class Program:
 		
 		cmd = ''
 		while cmd != 'q':
-			cmd = input('\n[vol {self.volume*100}%]>> ')
+			cmd = input(f'\n[vol {self.volume*100}%]>> ')
 			
 			if cmd.startswith('g '):
+				import cProfile
 				end_sec = float(cmd[2:])
-				self.export(0, end_sec)
+				cProfile.runctx("self.export(0, end_sec)", globals(), locals())
+				#self.export(0, end_sec)
 				
 			if cmd.startswith('vol '):
 				vol = float(cmd[4:])
diff --git a/core/room.py b/core/room.py
index 50049dd..80f235f 100644
--- a/core/room.py
+++ b/core/room.py
@@ -42,40 +42,46 @@ class Room:
 		for node in self.nodes:
 			node.tick_done = False
 				
-		if t%1000 == 0:
-			print(t, end='\r', flush=True)
-			
 		updates = True
+		order_of_passage = []
 		
-		while updates:
+		if not order_of_passage:
 			
-			updates = False
-			
-			for node in self.nodes:
+			while updates:
 				
-				if not (t in node.r_amps):
+				updates = False
+				
+				for node in self.nodes:
 					
-					has_unprocessed_inputs = False
-					
-					for in_node in node.air_in:
-						if not in_node.tick_done:
-							has_unprocessed_inputs = True
-							break
-					
-					if not has_unprocessed_inputs:
-						for in_node in node.wire_in:
+					if not (t in node.r_amps):
+						
+						has_unprocessed_inputs = False
+						
+						for in_node in node.air_in:
 							if not in_node.tick_done:
 								has_unprocessed_inputs = True
 								break
-								
-					if not has_unprocessed_inputs:
 						
-						node.calc_r_amps(t)
-						node.tick_done = True
-						updates = True
+						if not has_unprocessed_inputs:
+							for in_node in node.wire_in:
+								if not in_node.tick_done:
+									has_unprocessed_inputs = True
+									break
+									
+						if not has_unprocessed_inputs:
+							
+							node.calc_r_amps(t)
+							node.tick_done = True
+							updates = True
+							order_of_passage.append(node)
+				
+							
+		else:
+			for node in order_of_passage:
+				node.calc_r_amps(t)
 	
-		left_total_amp = self.max_amp * sum([vol for freq, vol in self.left_sink.r_amps[t].items()])
-		right_total_amp = self.max_amp * sum([vol for freq, vol in self.right_sink.r_amps[t].items()])
+		left_total_amp = self.max_amp * sum([vol * math.sin(self.sine_multiplier * freq * t) for freq, vol in self.left_sink.r_amps[t].items()])
+		right_total_amp = self.max_amp * sum([vol * math.sin(self.sine_multiplier * freq * t)  for freq, vol in self.right_sink.r_amps[t].items()])
 		
 		if left_total_amp > self.max_amp:
 			left_total_amp = self.max_amp
diff --git a/core/soundnode.py b/core/soundnode.py
index 72e0831..8f3986a 100644
--- a/core/soundnode.py
+++ b/core/soundnode.py
@@ -24,7 +24,10 @@ class SoundNode:
 		
 		loc = self.location(t)
 		other_loc = other_node.location(t)
-	
+		diff_x = loc[0]-other_loc[0]
+		diff_y = loc[1]-other_loc[1]
+		diff_z = loc[2]-other_loc[2]
+		return diff_x*diff_x + diff_y*diff_y + diff_z * diff_z
 		return (loc[0]-other_loc[0])**2 + (loc[1]-other_loc[1])**2 + (loc[2]-other_loc[2])**2
 	
 	def sample_r_amps_by_wire(self, source_node, current_t):
@@ -40,7 +43,9 @@ class SoundNode:
 		sample_t = current_t - int(dist / self.room.speed_of_sound)
 		
 		if sample_t in source_node.r_amps:
-			return {f: a / float(dist) for f, a in source_node.r_amps[sample_t].items()}
+			
+			attenuation = math.exp(-(dist/100.0))
+			return {f: a * attenuation for f, a in source_node.r_amps[sample_t].items()}
 			
 		return dict()
 		
diff --git a/test.py b/test.py
index 453bc56..1f29b34 100644
--- a/test.py
+++ b/test.py
@@ -4,6 +4,9 @@ from core.room import Room
 from core.program import Program
 from core.soundnode import SoundNode
 from core.nodes.sinenode import *
+from core.nodes.triangle import *
+from core.nodes.sawtooth import *
+from core.actions.basics import *
 
 class TestProgram(Program):
 	
@@ -12,31 +15,30 @@ class TestProgram(Program):
 		super().__init__("testprogram")
 
 	def setup(self):
-		
 		self.reset()
 		
-		sn = SineNode([], self.room)
+		sn = SineNode(440, self.room)
+		sn2 = SawtoothNode(440, self.room)
 		
 		sn.air_to(self.room.left_sink)
-		#sn.air_to(self.room.right_sink)
-		
-		NoteAction('A4', self.st(0), self.st(0.5), [sn], self)
-		NoteAction('G4', self.st(1), self.st(0.5), [sn], self)
-		NoteAction('F4', self.st(2), self.st(0.5), [sn], self)
-		NoteAction('E4', self.st(3), self.st(0.5), [sn], self)
-		
-		sn2 = SineNode([], self.room)
-		
-		#sn2.air_to(self.room.left_sink)
+		sn.air_to(self.room.right_sink)
+		sn2.air_to(self.room.left_sink)
 		sn2.air_to(self.room.right_sink)
 		
-		NoteAction('A3', self.st(0), self.st(0.5), [sn2], self)
-		NoteAction('G3', self.st(1), self.st(0.5), [sn2], self)
-		NoteAction('F3', self.st(2), self.st(0.5), [sn2], self)
-		NoteAction('E3', self.st(3), self.st(0.5), [sn2], self)
-
-
+		sn.start_location = (4,0,0)
+		sn2.start_location = (-4,0,0)
+		
+		"""
+		NoteAction('A4', self.st(0), self.st(0.5), [sn, tn], self)
+		NoteAction('G4', self.st(1), self.st(0.5), [sn, tn], self)
+		NoteAction('F4', self.st(2), self.st(0.5), [sn, tn], self)
+		NoteAction('E4', self.st(3), self.st(0.5), [sn, tn], self)
+		"""
+		LinearPitchTransition('A4', 'E4', self.st(0), self.st(5), [sn], self)	
+		LinearPitchTransition('E4', 'A4', self.st(0), self.st(5), [sn2], self)		
 
+		LinearSpatialTransition((-8,0,0),(8,0,0), self.st(0), self.st(5), [sn], self)	
+		
 TP = TestProgram()
 TP.setup()
 TP.interface()
\ No newline at end of file