physicsEngine.py

#physicsEngine.py
'''
Created on Nov 6, 2012

@author: pipsqueaker
'''
import redSquare

subCube = redSquare.redCubie

class rectangleDeity:
    def __init__(self, boardWidth, boardHeight, gravityCoefficient, elastic, resistanceAir, gX, gY):
        self.resistanceAir = resistanceAir
        self.gravForce = gravityCoefficient #Try to keep this low
        self.wideNum, self.tallNum = boardWidth, boardHeight
        self.wallElastic = elastic
        self.dy = 0
        self.dx = 0
        self.cubeMember = subCube(gX, gY)

    def gravityAct(self):

        self.ypos = self.cubeMember.y
        self.downYBound = self.cubeMember.height + self.ypos

        if self.tallNum - 10 > self.downYBound: #mod the self tall num
            self.dy += self.gravForce
        else:
            self.dy *= -self.wallElastic

        if self.ypos - 10 >= self.tallNum:
            self.dy *= -1

    def pushX(self, forceApplied):
        self.dx = forceApplied / self.cubeMember.mass

    def pushSpecialX(self, forceApplied):
        self.dx = -forceApplied / self.cubeMember.mass

    def AirResistanceSlow(self, currentMomentumX, currentMomentumY):
        if currentMomentumX >= 0:
            if self.dx > 0:
                self.dx -= self.resistanceAir
        elif currentMomentumX < 0:
            if self.dx < 0:
                self.dx += self.resistanceAir

        self.cubeMember._move(self.dx, self.dy)

    def jump(self, height):
        self.dy += height
        self.cubeMember._move(0, -self.dy)

    def returnMyRectangle(self):
        return (self.cubeMember.x, self.cubeMember.y, self.cubeMember.width, self.cubeMember.height)