include "Colourable.tan"
class t.Ball {
isa t.Colourable;
method bounce(str howhigh) -> str;
event bounced(str howhigh);
smashed prop size = int;
}
include "Colourable.tan"
class t.Ball {
isa t.Colourable;
method bounce(str howhigh) -> str;
event bounced(str howhigh);
smashed prop size = int;
}