Assets\playermovement.cs(22,28): error CS0019: Operator '<' cannot be applied to operands of type 'Vector3' and 'int'

pls help

if (isGrounded && velocity < 0)
     {
         velocity.y = -2f;
     }

CodePudding user response：

Rather than a single number indicating how fast the object is travelling, in this case velocity is a Vector3 containing three numbers (x, y and z values) which indicate both the speed and the direction of travel in 3D space.

If you were wanting a single number indicating the object's current speed (the length of the vector essentially), you could use velocity.magnitude:

if (isGrounded && velocity.magnitude < 0)
{
    velocity.y = -2f;
}

However that wouldn't make sense in this case as the magnitude will never be less than 0 (slower than motionless). I think what you were probably intending to do is check the object's velocity on the Y axis -- i.e. "is the object moving downwards". For that purpose, use velocity.y for the if statement:

if (isGrounded && velocity.y < 0)
{
    velocity.y = -2f;
}

CodePudding user response：

Unity supports only multiplication of Vector3 by a number. But you can add two vectors or subtract one from another.Thank you hope it can help you