From e9d094b95fff9e62acf61ae022a593a7003bef3e Mon Sep 17 00:00:00 2001
From: Valentin Gehrke <madmaurice@zom.bi>
Date: Thu, 17 Mar 2016 11:54:41 +0100
Subject: [PATCH] Added random rotation to pendel
---
pendel.py | 21 ++++++++++++++++-----
1 file changed, 16 insertions(+), 5 deletions(-)
diff --git a/pendel.py b/pendel.py
index 4e101a6..b2c3480 100644
--- a/pendel.py
+++ b/pendel.py
@@ -1,4 +1,5 @@
#!/usr/bin/env python
+from math import sin, cos, pi
from game import *
@@ -30,6 +31,9 @@ class Vector(object):
def __sub__(self, other):
return self.__add__(other.__neg__())
+ def rotate(self,alpha):
+ return Vector( cos(alpha) * self.x - sin(alpha) * self.y, sin(alpha) * self.x + cos(alpha) * self.y)
+
def len(self):
return math.sqrt( self.x * self.x + self.y * self.y )
@@ -41,7 +45,8 @@ class Vector(object):
class PendelSim(Game):
def __init__(self):
- super(PendelSim,self).__init__(1000,600, 60)
+ super(PendelSim,self).__init__(1300,700, 60)
+ self.time = 0
self.init_data()
self.mousedown = False
self.mousepos = (0,0)
@@ -54,16 +59,22 @@ class PendelSim(Game):
def init_data(self):
- self.staff_lengths = staff_lengths = [ randint(150,200), randint(100,200), randint(100,150) ]
+ self.staff_lengths = staff_lengths = [ randint(200,300), randint(100,220), randint(30,120) ]
fixed_joint = Vector( self._width/2, self._height/5 )
- joint_a = fixed_joint - Vector(staff_lengths[0],0)
- joint_b = joint_a - Vector(0,-staff_lengths[1])
- joint_c = joint_b - Vector(-staff_lengths[2],0)
+ joint_a = fixed_joint - Vector(staff_lengths[0],0).rotate( (randint(0,180) / 180 * pi) )
+ joint_b = joint_a - Vector(staff_lengths[1],0).rotate( (randint(0,180) / 180 * pi) )
+ joint_c = joint_b - Vector(staff_lengths[2],0).rotate( (randint(0,180) / 180 * pi) )
self.joints = [fixed_joint, joint_a, joint_b, joint_c ]
self.joint_speed = [ Vector(0,0), Vector(0,0), Vector(0,0), Vector(0,0) ]
self.old_joints = self.joints
def on_update(self, dtime):
+ self.time += dtime
+ if self.time > 10:
+ self.resetpath()
+ self.init_data()
+ self.time = 0
+
new_joints = self.joints[:]
for i in range(1,4):
new_joints[i] += (0.99 * self.joint_speed[i] + Vector(0,40)) * dtime