From 0f1d1747978c7c9c230b8f6bb13b72f787f15acb Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Thu, 01 Nov 2012 13:42:52 +0000
Subject: use float to store internal turtle position and heading

---
diff --git a/TurtleArt/tacanvas.py b/TurtleArt/tacanvas.py
index fb42422..4b8e974 100644
--- a/TurtleArt/tacanvas.py
+++ b/TurtleArt/tacanvas.py
@@ -217,9 +217,9 @@ class TurtleGraphics:
                 self.tw.active_turtle.set_gray(100)
                 self.tw.active_turtle.set_pen_size(5)
                 self.tw.active_turtle.reset_shapes()
-                self.seth(0, share)
+                self.seth(0.0, share)
                 self.setpen(False, share)
-                self.setxy(0, 0, share)
+                self.setxy(0.0, 0.0, share)
                 self.setpen(True, share)
                 self.tw.active_turtle.hide()
         self.set_turtle(self.tw.default_turtle_name)
@@ -686,11 +686,10 @@ class TurtleGraphics:
         x, y = self.turtle_to_screen_coordinates(self.xcor, self.ycor)
         if self.tw.interactive_mode:
             self.tw.active_turtle.move(
-                (int(self.cx + x - self.tw.active_turtle.spr.rect.width / 2.),
-                 int(self.cy + y - self.tw.active_turtle.spr.rect.height / 2.))
-                )
+                (self.cx + x - self.tw.active_turtle.spr.rect.width / 2.,
+                 self.cy + y - self.tw.active_turtle.spr.rect.height / 2.))
         else:
-            self.tw.active_turtle.move((int(self.cx + x), int(self.cy + y)))
+            self.tw.active_turtle.move(self.cx + x, self.cy + y)
 
     def get_color_index(self, r, g, b, a=0):
         ''' Find the closest palette entry to the rgb triplet '''
@@ -753,8 +752,8 @@ class TurtleGraphics:
         if k not in self.tw.turtles.dict:
             # if it is a new turtle, start it in the center of the screen
             self.tw.active_turtle = self.tw.turtles.get_turtle(k, True, colors)
-            self.seth(0, False)
-            self.setxy(0, 0, False, pendown=False)
+            self.seth(0.0, False)
+            self.setxy(0.0, 0.0, False, pendown=False)
             self.tw.active_turtle.set_pen_state(True)
         elif colors is not None:
             self.tw.active_turtle = self.tw.turtles.get_turtle(k, False)
diff --git a/TurtleArt/taturtle.py b/TurtleArt/taturtle.py
index c70f379..e3d6e39 100644
--- a/TurtleArt/taturtle.py
+++ b/TurtleArt/taturtle.py
@@ -112,14 +112,14 @@ class Turtle:
 
     def __init__(self, turtles, key, turtle_colors=None):
         """ The turtle is not a block, just a sprite with an orientation """
-        self.x = 0
-        self.y = 0
+        self.x = 0.0
+        self.y = 0.0
         self.hidden = False
         self.shapes = []
         self.custom_shapes = False
         self.type = 'turtle'
         self.name = key
-        self.heading = 0
+        self.heading = 0.0
         self.pen_shade = 50
         self.pen_color = 0
         self.pen_gray = 100
@@ -190,7 +190,7 @@ class Turtle:
             if n != 1:
                 debug_output("%d images passed to set_shapes: ignoring" % (n),
                              self.tw.running_sugar)
-            if self.heading == 0:  # rotate the shapes
+            if self.heading == 0.0:  # rotate the shapes
                 images = []
                 w, h = shapes[0].get_width(), shapes[0].get_height()
                 nw = nh = int(sqrt(w * w + h * h))
@@ -265,18 +265,16 @@ class Turtle:
         self.move((self.x, self.y))
         self.set_heading(self.heading)
         if self.label_block is not None:
-            self.label_block.spr.move((self.x + self.label_xy[0],
-                                       self.y + self.label_xy[1]))
             self.label_block.spr.set_layer(TURTLE_LAYER + 1)
 
     def move(self, pos):
         """ Move the turtle. """
-        self.x, self.y = int(pos[0]), int(pos[1])
+        self.x, self.y = pos[0], pos[1]
         if not self.hidden and self.spr is not None:
-            self.spr.move(pos)
+            self.spr.move((int(pos[0]), int(pos[1])))
         if self.label_block is not None:
-            self.label_block.spr.move((pos[0] + self.label_xy[0],
-                                       pos[1] + self.label_xy[1]))
+            self.label_block.spr.move((int(pos[0] + self.label_xy[0]),
+                                       int(pos[1] + self.label_xy[1])))
         return(self.x, self.y)
 
     def get_name(self):
diff --git a/TurtleArt/tawindow.py b/TurtleArt/tawindow.py
index b3896e4..1d1b62c 100644
--- a/TurtleArt/tawindow.py
+++ b/TurtleArt/tawindow.py
@@ -2275,10 +2275,10 @@ class TurtleArtWindow():
                     self.active_turtle = None
             else:
                 self._move_turtle(
-                    int(tx - self.canvas.width / 2. + \
-                            self.active_turtle.spr.rect.width / 2.),
-                    int(self.canvas.height / 2. - ty - \
-                            self.active_turtle.spr.rect.height / 2.))
+                    tx - self.canvas.width / 2. + \
+                        self.active_turtle.spr.rect.width / 2.,
+                    self.canvas.height / 2. - ty - \
+                        self.active_turtle.spr.rect.height / 2.)
             self.selected_turtle = None
             if self.active_turtle is None:
                 self.canvas.set_turtle(self.default_turtle_name)
--
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