Triggering Animation based on change in x Position

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 30/10/2011 at 16:25, xxxxxxxx wrote:

Hi Everyone,

I'm very new to Python on C4D, but I'm sure what I'm trying to do is possible with Python.

Basically, I have a sprite that is composed of three objects - an animation of an 8bit character walking.

I have the code working in an XPresso node so far that I'm able to switch the character's state based on User Data, but I would really like to trigger the walk cycle depending on how much the character has moved on X. Something like if last position has changed on x by five, switch to next state and so on.

I know that will have to do with Vectors and Time, but I'm a little lost as to where to start.

Thanks in Advance,

-SP

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 31/10/2011 at 03:32, xxxxxxxx wrote:

if you want user data to change depending on how much the character has moved so far, it would be possible with xpresso, too.
But its more comfortable through scripting though.

states = [0, 100, 200, 300]     # units on the x-axis  
                              # the indices of the values represent  
                              # the state of the userdata for this value  
  
def **getState** (x_pos) :  
  if x_pos < states[0]:  
      return 0  
  
  for i in xrange(len(states) - 1) :  
      if x_pos >= states[i] and x_pos < states[i + 1]:  
          return i + 1  
  
  if x_pos >= states[-1]:  
      return len(states)  
  else:  
      pass  
      # should never run until here !.  
  
for i in xrange(-100, 500, 120) :  
  print ("State at x-position %s:" % i).ljust(30, "."), getState(i)

State at x-position -100:..... 0  
State at x-position 20:....... 1  
State at x-position 140:...... 2  
State at x-position 260:...... 3  
State at x-position 380:...... 4

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 31/10/2011 at 14:46, xxxxxxxx wrote:

Thanks for the reply!

That is a great solution, but what I'm looking for I think is even simpler. I basically have three frames that will loop depending on how far on X the character has moved.

What I need is some way of storing how much the character has moved on X. To do this, I need to test the change over time, and the c4d.BaseTime module is very unwieldy. It looks like I might need to store a frame number, from the documentation.

Is there a simple way to check for change in X over a certain amount of time?

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 31/10/2011 at 15:31, xxxxxxxx wrote:

Is there a simple way to check for change in X over a certain amount of time?

Course,

class _container:   
    pass   
data = _container()   
data.last_x_pos = 0   
  
def main() :   
    pos = op.GetAbsPos().x   
    delta = pos - data.last_x_pos   
    #....   
    data.last_x_pos = pos