I am not quite get how to make it so when I like push the space bar or the control key it would make my charictar swing his sword?? And his sword is not attached it is part of him(the model) how woul I do this??

hi

in order to do this you could use a condition such as "if (key_space==1)" in your entities action to initiate the animation where he is swinging the sword once space bar is pressed.

and then adding ent_cycle(the animation) after the condition.

Ent_cycle would have to be within a loop.

You would also have to set a condition which will make the sword animation stop.

That was mostly correct. However, use ent_frame not ent_cycle. Look up ent_frame in the C-Script manual for more details.