Improve code formatting

The scripts were streamlined using more or less the following conventions:
 - space after a comma in lists of arguments
 - spaces around weak operators (+, -), no spaces around strong operators (*, /)
 - spaces around comparison operators and compound assignment operators
 - space after a comment start (#)
 - removed trailing spaces or tabs, apart from those that delimit the function indentation level (those could be removed too but since they are added automatically by the editor when typing code, keeping them for now)
 - function blocks separate by two newlines
 - comment sentences start with an upper-case letter

1 files changed, 98 insertions, 120 deletions

diff --git a/demos/2d/tetris/grid.gd b/demos/2d/tetris/grid.gd
index 8708d168e4..73607d7cf6 100644
--- a/demos/2d/tetris/grid.gd
+++ b/demos/2d/tetris/grid.gd
@@ -1,82 +1,76 @@
 
-
 extends Control
 
 # Simple Tetris-like demo, (c) 2012 Juan Linietsky
 # Implemented by using a regular Control and drawing on it during the _draw() callback.
 # The drawing surface is updated only when changes happen (by calling update())
 
-
+# Member variables
 var score = 0
-var score_label=null
+var score_label = null
 
 const MAX_SHAPES = 7
 
 var block = preload("block.png")
 
-var block_colors=[
-	Color(1,0.5,0.5),
-	Color(0.5,1,0.5),
-	Color(0.5,0.5,1),
-	Color(0.8,0.4,0.8),
-	Color(0.8,0.8,0.4),
-	Color(0.4,0.8,0.8),
-	Color(0.7,0.7,0.7)]
-
-var	block_shapes=[
-	[ Vector2(0,-1),Vector2(0,0),Vector2(0,1),Vector2(0,2) ], # I
-	[ Vector2(0,0),Vector2(1,0),Vector2(1,1),Vector2(0,1) ], # O
-	[ Vector2(-1,1),Vector2(0,1),Vector2(0,0),Vector2(1,0) ], # S
-	[ Vector2(1,1),Vector2(0,1),Vector2(0,0),Vector2(-1,0) ], # Z
-	[ Vector2(-1,1),Vector2(-1,0),Vector2(0,0),Vector2(1,0) ], # L
-	[ Vector2(1,1),Vector2(1,0),Vector2(0,0),Vector2(-1,0) ], # J
-	[ Vector2(0,1),Vector2(1,0),Vector2(0,0),Vector2(-1,0) ]] # T
-	
+var block_colors = [
+	Color(1, 0.5, 0.5),
+	Color(0.5, 1, 0.5),
+	Color(0.5, 0.5, 1),
+	Color(0.8, 0.4, 0.8),
+	Color(0.8, 0.8, 0.4),
+	Color(0.4, 0.8, 0.8),
+	Color(0.7, 0.7, 0.7)]
 
-var block_rotations=[
-	Matrix32( Vector2(1,0),Vector2(0,1), Vector2() ),
-	Matrix32( Vector2(0,1),Vector2(-1,0), Vector2() ),
-	Matrix32( Vector2(-1,0),Vector2(0,-1), Vector2() ),
-	Matrix32( Vector2(0,-1),Vector2(1,0), Vector2() )
-]
-	
+var block_shapes = [
+	[ Vector2(0, -1), Vector2(0, 0), Vector2(0, 1), Vector2(0, 2) ], # I
+	[ Vector2(0, 0), Vector2(1, 0), Vector2(1, 1), Vector2(0, 1) ], # O
+	[ Vector2(-1, 1), Vector2(0, 1), Vector2(0, 0), Vector2(1, 0) ], # S
+	[ Vector2(1, 1), Vector2(0, 1), Vector2(0, 0), Vector2(-1, 0) ], # Z
+	[ Vector2(-1, 1), Vector2(-1, 0), Vector2(0, 0), Vector2(1, 0) ], # L
+	[ Vector2(1, 1), Vector2(1, 0), Vector2(0, 0), Vector2(-1, 0) ], # J
+	[ Vector2(0, 1), Vector2(1, 0), Vector2(0, 0), Vector2(-1, 0) ]] # T
 
-var width=0
-var height=0
+var block_rotations = [
+	Matrix32(Vector2(1, 0), Vector2(0, 1), Vector2()),
+	Matrix32(Vector2(0, 1), Vector2(-1, 0), Vector2()),
+	Matrix32(Vector2(-1, 0), Vector2(0, -1), Vector2()),
+	Matrix32(Vector2(0, -1), Vector2(1, 0), Vector2())]
 
-var cells={}
+var width = 0
+var height = 0
 
-var piece_active=false
-var piece_shape=0
-var piece_pos=Vector2()
-var piece_rot=0
+var cells = {}
 
+var piece_active = false
+var piece_shape = 0
+var piece_pos = Vector2()
+var piece_rot = 0
 
-func piece_cell_xform(p,er=0):
-	var r = (4+er+piece_rot)%4
-	return piece_pos+block_rotations[r].xform(p)
 
-func _draw():
+func piece_cell_xform(p, er = 0):
+	var r = (4 + er + piece_rot) % 4
+	return piece_pos + block_rotations[r].xform(p)
+
 
-	var sb = get_stylebox("bg","Tree") # use line edit bg
-	draw_style_box(sb,Rect2(Vector2(),get_size()).grow(3))
+func _draw():
+	var sb = get_stylebox("bg", "Tree") # Use line edit bg
+	draw_style_box(sb, Rect2(Vector2(), get_size()).grow(3))
 	
 	var bs = block.get_size()
 	for y in range(height):
 		for x in range(width):
-			if (Vector2(x,y) in cells):
-				draw_texture_rect(block,Rect2(Vector2(x,y)*bs,bs),false,block_colors[cells[Vector2(x,y)]])
-				
+			if (Vector2(x, y) in cells):
+				draw_texture_rect(block, Rect2(Vector2(x, y)*bs, bs), false, block_colors[cells[Vector2(x, y)]])
+	
 	if (piece_active):
-		
 		for c in block_shapes[piece_shape]:
-			draw_texture_rect(block,Rect2(piece_cell_xform(c)*bs,bs),false,block_colors[piece_shape])
-			
+			draw_texture_rect(block, Rect2(piece_cell_xform(c)*bs, bs), false, block_colors[piece_shape])
 
-func piece_check_fit(ofs,er=0):
 
+func piece_check_fit(ofs, er = 0):
 	for c in block_shapes[piece_shape]:
-		var pos = piece_cell_xform(c,er)+ofs
+		var pos = piece_cell_xform(c, er) + ofs
 		if (pos.x < 0):
 			return false
 		if (pos.y < 0):
@@ -88,130 +82,114 @@ func piece_check_fit(ofs,er=0):
 		if (pos in cells):
 			return false
 	
-	return true	
+	return true
 
-func new_piece():
 
-	piece_shape = randi() % MAX_SHAPES	
-	piece_pos = Vector2(width/2,0)
-	piece_active=true
-	piece_rot=0
-	if (piece_shape==0):
-		piece_pos.y+=1
-		
+func new_piece():
+	piece_shape = randi() % MAX_SHAPES
+	piece_pos = Vector2(width/2, 0)
+	piece_active = true
+	piece_rot = 0
+	if (piece_shape == 0):
+		piece_pos.y += 1
+	
 	if (not piece_check_fit(Vector2())):
-		#game over
-		#print("GAME OVER!")
+		# Game over
 		game_over()
-		
-	update()
-		
 	
+	update()
+
+
 func test_collapse_rows():
-	var accum_down=0
+	var accum_down = 0
 	for i in range(height):
 		var y = height - i - 1
 		var collapse = true
 		for x in range(width):
-			if (Vector2(x,y) in cells):
+			if (Vector2(x, y) in cells):
 				if (accum_down):
-					cells[ Vector2(x,y+accum_down) ] = cells[Vector2(x,y)]
+					cells[Vector2(x, y + accum_down)] = cells[Vector2(x, y)]
 			else:
-				collapse=false
+				collapse = false
 				if (accum_down):
-					cells.erase( Vector2(x,y+accum_down) )
-						
-		if (collapse):
-			accum_down+=1
+					cells.erase(Vector2(x, y + accum_down))
 		
-			
-	score+=accum_down*100
+		if (collapse):
+			accum_down += 1
+	
+	score += accum_down*100
 	score_label.set_text(str(score))
-			
-		
+
+
 func game_over():
+	piece_active = false
+	get_node("gameover").set_text("Game over!")
+	update()
+
 
-		piece_active=false
-		get_node("gameover").set_text("Game Over")		
-		update()
-				
-		
 func restart_pressed():
+	score = 0
+	score_label.set_text("0")
+	cells.clear()
+	get_node("gameover").set_text("")
+	piece_active = true
+	get_node("../restart").release_focus()
+	update()
 
-		score=0
-		score_label.set_text("0")
-		cells.clear()
-		get_node("gameover").set_text("")		
-		piece_active=true
-		get_node("../restart").release_focus()
-		update()
-		
-		
 
 func piece_move_down():
-
 	if (!piece_active):
 		return
-	if (piece_check_fit(Vector2(0,1))):
-		piece_pos.y+=1
-		update()		
+	if (piece_check_fit(Vector2(0, 1))):
+		piece_pos.y += 1
+		update()
 	else:
-
 		for c in block_shapes[piece_shape]:
 			var pos = piece_cell_xform(c)
-			cells[pos]=piece_shape
+			cells[pos] = piece_shape
 		test_collapse_rows()
 		new_piece()
-		
 
-func piece_rotate():
 
+func piece_rotate():
 	var adv = 1
-	if (not piece_check_fit(Vector2(),1)):
+	if (not piece_check_fit(Vector2(), 1)):
 		return
 	piece_rot = (piece_rot + adv) % 4
 	update()
-	
-	
-
-func _input(ie):
 
 
+func _input(ie):
 	if (not piece_active):
 		return
 	if (!ie.is_pressed()):
 		return
 
 	if (ie.is_action("move_left")):
-		if (piece_check_fit(Vector2(-1,0))):
-			piece_pos.x-=1
+		if (piece_check_fit(Vector2(-1, 0))):
+			piece_pos.x -= 1
 			update()
 	elif (ie.is_action("move_right")):
-		if (piece_check_fit(Vector2(1,0))):
-			piece_pos.x+=1
+		if (piece_check_fit(Vector2(1, 0))):
+			piece_pos.x += 1
 			update()
 	elif (ie.is_action("move_down")):
 		piece_move_down()
 	elif (ie.is_action("rotate")):
 		piece_rotate()
-		
-		
-func setup(w,h):
-	width=w
-	height=h
-	set_size( Vector2(w,h)*block.get_size() )
+
+
+func setup(w, h):
+	width = w
+	height = h
+	set_size(Vector2(w, h)*block.get_size())
 	new_piece()
 	get_node("timer").start()
-	
+
 
 func _ready():
 	# Initalization here
-
-	setup(10,20)
+	setup(10, 20)
 	score_label = get_node("../score")
-
+	
 	set_process_input(true)
-
-
-
-