From 2a84801ba80cd83397266983af1cf8524c6b3b75 Mon Sep 17 00:00:00 2001 From: Valentin Gehrke Date: Tue, 16 Feb 2016 18:03:41 +0100 Subject: [PATCH] Mosi: Multipendel --- pendel.py | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 pendel.py diff --git a/pendel.py b/pendel.py new file mode 100644 index 0000000..55f57de --- /dev/null +++ b/pendel.py @@ -0,0 +1,102 @@ +#!/usr/bin/env python + +from game import * + +from random import randint + +class Vector(object): + def __init__(self, x, y): + self.x = float(x) + self.y = float(y) + + def __add__(self, other): + return Vector( self.x + other.x, self.y + other.y ) + + def __neg__(self): + return Vector( -self.x, -self.y ) + + def __mul__(self, other): + return Vector( self.x * other, self.y * other ) + + def __rmul__(self, other): + return self.__mul__(other) + + def __div__(self, other): + return Vector( self.x / other, self.y / other ) + + def __truediv__(self, other): + return self.__div__( other ) + + def __sub__(self, other): + return self.__add__(other.__neg__()) + + def len(self): + return math.sqrt( self.x * self.x + self.y * self.y ) + + def astuple(self): + return ( int(self.x) , int(self.y) ) + + def __repr__(self): + return "( %.2f, %.2f )" % (self.x, self.y) + +class PendelSim(Game): + def __init__(self): + super(PendelSim,self).__init__(1000,600, 60) + self.init_data() + + def init_data(self): + self.staff_lengths = staff_lengths = [ randint(100,200) for i in range(3) ] + 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) + 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) ] + + def on_update(self, dtime): + new_joints = self.joints[:] + for i in range(1,4): + new_joints[i] += (self.joint_speed[i] + Vector(0,40)) * dtime + + for i in range(0,4-1): + relvec = new_joints[i+1] - new_joints[i] + relvec = (relvec * self.staff_lengths[i]) / relvec.len() + new_joints[i+1] = new_joints[i] + relvec + + for i in range(0,4): + self.joint_speed[i] = (new_joints[i] - self.joints[i]) / dtime + + self.joints = new_joints + + def on_render(self, surface): + BLACK = (0,0,0) + RED = (255,0,0) + GREEN = (0,255,0) + WHITE = (255,255,255) + BLUE = (0,0,255) + + staff_colors = [ RED, GREEN, BLUE ] + + surface.fill(BLACK) + + + for i in range(4-1): + pygame.draw.line(surface, staff_colors[i%3], self.joints[i].astuple(), self.joints[i+1].astuple(), 3) + + for i in range(4): + pygame.draw.circle(surface, WHITE, self.joints[i].astuple(), 4) + + pygame.display.flip() + + def on_event(self, event): + if event.type == MOUSEBUTTONDOWN: + self.init_data() + else: + super(PendelSim, self).on_event(event) + + +def main(): + PendelSim().on_execute() + +if __name__ == '__main__': + main()