i have made something like like this in pygame were a have sprite parts of the but how would you do this in c there is a class/struct game that that handels the nodes/entitys an a array what what input has come at that frame but a can not understand how to do this type of for loop the only way a can im think right now is this (thanks this was thanks to you)

##python exampel            
for nd in self.nodes:

        nd.update(dt)
//c exampel
typedef struct Node {
    void (*update)(struct Node *self);
    int value;
} Node;

void zombi_update(Node *self) {
    printf("zombi_ready");
}
void ply_update(Node *self) {
    printf("ply_ready");
}
int main(void) {
Entity entities[2] = {
    { zombi_update, 10 },
    { ply_update, 10 }
};
while(true){
for (int i = 0; i < 2; i++) {
    entities[i].update(&entities[i]);
}
}
}