def applyGravity(self, ship, deltaTime):
distance = tupleDistance(ship.getPos(),
vec3ToTuple(self.planet.getPos()))
if distance > Game.GRAVITY_DISTANCE: return
gravity = Game.GRAVITY / distance
gravityVector = tupleNormalize(
tupleSegment(ship.getPos(), vec3ToTuple(self.planet.getPos())))
gravityVector = scaleTuple(gravityVector, gravity * deltaTime)
ship.applyForce(gravityVector)
def applyGravity(self, ship, deltaTime):
distance = tupleDistance(
ship.getPos(),
vec3ToTuple( self.planet.getPos() )
)
if distance > Game.GRAVITY_DISTANCE: return
gravity = Game.GRAVITY/distance
gravityVector = tupleNormalize(
tupleSegment(
ship.getPos(),
vec3ToTuple( self.planet.getPos() )
)
)
gravityVector = scaleTuple( gravityVector, gravity * deltaTime)
ship.applyForce( gravityVector )
def updateCamera(self):
ships = self.getShips()
shipOne = ships[0]
shipOnePos = shipOne.getPos()
shipTwo = ships[1]
shipTwoPos = shipTwo.getPos()
# Calculate the distance between the ships
distance = tupleDistance(shipOnePos, shipTwoPos)
cameraDistance = distance * Game.CAMERA_DISTANCE_COEFFICIENT
if cameraDistance > Game.CAMERA_DISTANCE_MAX:
cameraDistance = Game.CAMERA_DISTANCE_MAX
if cameraDistance < Game.CAMERA_DISTANCE_MIN:
cameraDistance = Game.CAMERA_DISTANCE_MIN
# Calculate the middle point in space between the ship's positions
middle = tupleMiddle(shipOnePos, shipTwoPos)
cameraPos = self.getCameraPos()
self.lastCameraPos = cameraPos
newCameraPos = (middle[0], middle[1], cameraDistance)
self.setCameraPos(newCameraPos)
self.updateStars(newCameraPos)
def updateCamera(self):
ships = self.getShips()
shipOne = ships[0]
shipOnePos = shipOne.getPos()
shipTwo = ships[1]
shipTwoPos = shipTwo.getPos()
# Calculate the distance between the ships
distance = tupleDistance(shipOnePos, shipTwoPos)
cameraDistance = distance * Game.CAMERA_DISTANCE_COEFFICIENT
if cameraDistance > Game.CAMERA_DISTANCE_MAX:
cameraDistance = Game.CAMERA_DISTANCE_MAX
if cameraDistance < Game.CAMERA_DISTANCE_MIN:
cameraDistance = Game.CAMERA_DISTANCE_MIN
# Calculate the middle point in space between the ship's positions
middle = tupleMiddle(shipOnePos, shipTwoPos)
cameraPos = self.getCameraPos()
self.lastCameraPos = cameraPos
newCameraPos = (middle[0], middle[1], cameraDistance)
self.setCameraPos(newCameraPos)
self.updateStars(newCameraPos)
def testTupleDistance(self): tuple1 = (1, 2) tuple2 = (4, 6) distance = ( ( tuple2[0] - tuple1[0] )**2 + ( tuple2[1] - tuple1[1] )**2 )**(1/2.) self.failUnlessEqual( tupleDistance( tuple1, tuple2 ), distance )
def testTupleDistance(self):
tuple1 = (1, 2)
tuple2 = (4, 6)
distance = ((tuple2[0] - tuple1[0])**2 +
(tuple2[1] - tuple1[1])**2)**(1 / 2.)
self.failUnlessEqual(tupleDistance(tuple1, tuple2), distance)
