Added curses interface. Removed unneded euclid libs

README.rst

@@ -1,7 +1,15 @@
 Optimized Boids (2D)
 ====================
 
-run with python optboid.py
+There are two GUIs for the simulation. 
+One based on PyGlet which must first be installed. Run this with
+
+python glboid.py
+
+The second is a curses (terminal) interface. Run with
+
+python curseboid.py
+
 
 An optimized version of  C. Reynolds flocking simulation which uses "boids"
 with simple rules to reproduce the behaviour of flocking creatures.

curseboid.py

@@ -0,0 +1,78 @@
+#!/usr/bin/python
+# -*- coding: utf8 -*-
+from __future__ import (division, print_function,
+                        absolute_import)
+
+import curses
+import simulation
+import math
+from time import time
+
+
+class World(object):
+    """
+    world class with draw functions for entities
+    """
+    def __init__(self, swarm, width):
+        self.width = width
+        self.swarm = swarm
+        self.ents = swarm.boids  # this will point to a list of boids
+        self.ent_char = '^'
+        self.num_ents = len(swarm.boids)
+        #self.fps = clock.ClockDisplay()
+        self._basescr = curses.initscr()
+        self.scr = curses.newwin(80, 80, 0, 0)
+        self.scr.border(0)
+        self.scr.refresh()
+
+        self._update_time = 0
+        self._fps = 0
+
+    def draw_entity(self, e):
+        """ Draws a boid """
+        x = int(math.floor(e.position.x / self.width))
+        y = int(math.floor(e.position.y / self.width))
+        self.scr.addstr(x, y, self.ent_char)
+
+    def draw_fps(self, dt):
+        self._update_time += dt
+        if self._update_time > 0.5:
+            self._fps = 1 / dt
+            self._update_time = 0
+
+        self.scr.addstr(3, 3, '%.1f fps' % self._fps)
+        self.scr.refresh()
+
+    def draw(self, dt):
+        self.scr.clear()
+        #self.draw_grid()
+        for ent in self.ents:
+            self.draw_entity(ent)
+        self.draw_fps(dt)
+        self.scr.refresh()
+
+
+sim = simulation.FlockSimulation(100, 700)
+world = World(sim.swarm, 10)
+
+
+def run():
+    go = True
+    prev_time = time()
+    print('starting')
+    try:
+        while go:
+            now_time = time()
+            dt = now_time - prev_time
+            prev_time = now_time
+            sim.update(dt)
+            world.draw(dt)
+            #x = world.scr.getkey()
+            #if x == 'e':
+            #    go = False
+    except KeyboardInterrupt:
+        curses.endwin()
+
+
+if __name__ == '__main__':
+    run()