Class: Teien::PhysicsObject

Inherits:
Object
  • Object
show all
Defined in:
lib/teien/base_object/physics_object.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(physics) ⇒ PhysicsObject

Returns a new instance of PhysicsObject.



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# File 'lib/teien/base_object/physics_object.rb', line 13

def initialize(physics)
  @physics = physics
  @rigid_body = nil
  @transform = Bullet::BtTransform.new()
  @transform.set_identity()
  @acceleration = Vector3D.new(0, 0, 0)

  @maxHorizontalVelocity = 0
  @maxVerticalVelocity = 0
end

Instance Attribute Details

#acceleration ⇒ Object

Returns the value of attribute acceleration.



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# File 'lib/teien/base_object/physics_object.rb', line 9

def acceleration
  @acceleration
end

#maxHorizontalVelocity ⇒ Object

Returns the value of attribute maxHorizontalVelocity.



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# File 'lib/teien/base_object/physics_object.rb', line 10

def maxHorizontalVelocity
  @maxHorizontalVelocity
end

#maxVerticalVelocity ⇒ Object

Returns the value of attribute maxVerticalVelocity.



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# File 'lib/teien/base_object/physics_object.rb', line 11

def maxVerticalVelocity
  @maxVerticalVelocity
end

#pivot_shape ⇒ Object

Returns the value of attribute pivot_shape.



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# File 'lib/teien/base_object/physics_object.rb', line 7

def pivot_shape
  @pivot_shape
end

#rigid_body ⇒ Object

Bullet accessor



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# File 'lib/teien/base_object/physics_object.rb', line 5

def rigid_body
  @rigid_body
end

#shape ⇒ Object

Returns the value of attribute shape.



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# File 'lib/teien/base_object/physics_object.rb', line 8

def shape
  @shape
end

#transform ⇒ Object

Returns the value of attribute transform.



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# File 'lib/teien/base_object/physics_object.rb', line 6

def transform
  @transform
end

Instance Method Details

#create_rigid_body(mass, motionState, colObj, inertia) ⇒ Object 



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# File 'lib/teien/base_object/physics_object.rb', line 49

def create_rigid_body(mass, motionState, colObj, inertia)
  rigid_body = Bullet::BtRigidBody.new(mass, motionState, colObj, inertia)
  rigid_body.instance_variable_set(:@collision_shape, colObj) # prevent this colObj from GC.
  return rigid_body
end

#finalize ⇒ Object 



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# File 'lib/teien/base_object/physics_object.rb', line 24

def finalize()
  @physics.del_rigid_body(@rigid_body)
end

#set_rigid_body(obj, shape, inertia, offset = Vector3D.new(0, 0, 0)) ⇒ Object

The offset changes the local position of the shape(collision shape) in Object.



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# File 'lib/teien/base_object/physics_object.rb', line 31

def set_rigid_body(obj, shape, inertia, offset = Vector3D.new(0, 0, 0))
#    puts "offset(#{offset.x}, #{offset.y}, #{offset.z})"
  @pivot_shape = Bullet::BtCompoundShape.new
  localTrans = Bullet::BtTransform.new
  localTrans.set_identity()
  localTrans.set_origin(offset)
  @pivot_shape.add_child_shape(localTrans, shape)
  @shape = shape
#    @rigid_body = @physics.create_rigid_body(obj.physics_info.mass, obj, @pivot_shape, inertia)
  @rigid_body = create_rigid_body(obj.physics_info.mass, obj, @pivot_shape, inertia)
  @rigid_body.set_angular_factor(obj.physics_info.angular_factor)
  @rigid_body.set_restitution(obj.physics_info.restitution)
  @rigid_body.set_friction(obj.physics_info.friction)
  @rigid_body.set_damping(obj.physics_info.linear_damping, 
                          obj.physics_info.angular_damping)
  return @rigid_body
end