Question

问题在于该行始终为假：

#ifndef STATUS_H_INCLUDED
#define STATUS_H_INCLUDED
enum status {FALSE, TRUE};
typedef enum status Status;
#endif



#ifndef LINKED_LIST_H_INCLUDED
#define LINKED_LIST_H_INCLUDED
//include "status.h"
#include <stdio.h>

struct node 
{ 
    int data; 
    struct node *next; 
}; 
typedef struct node Node;

Node* list_insert( Node *head, int data );
void print_list( Node *head );
void linked_list_destroy( Node** head );
void delete_node( Node** head, int data );
Status in_list( Node* head, int data );
void bytes_of_list( Node* head );

#endif


#include <stdio.h>
#include <stdlib.h>
//#include "linked_list.h"

int main( void )
{
    int num = 0;
    Node *head = NULL;

    num = 7;

    head = list_insert( head, num );
    bytes_of_list( head );

    head = list_insert( head, 9 );
    bytes_of_list( head );

    head = list_insert( head, 2 );
    bytes_of_list( head );

    head = list_insert( head, 8 );
    bytes_of_list( head );

    delete_node( &head, 6 );
    delete_node( &head, 9 );
    bytes_of_list( head );

    print_list( head );
    printf( "\n" );

    linked_list_destroy( &head );
    bytes_of_list( head );

    return 0;
}


//#include <stdlib.h>
//#include <stdio.h>
//#include "linked_list.h"
//#include "status.h"




/************************************************************** list insert */
Node *list_insert( Node *head, int data )
{
    printf( "\nInsert %d into list.\n", data );

    Node *pNode = malloc( sizeof( Node ));
    if( !pNode )
    {
        perror( "malloc failed" );
        exit( 1 );
    }

    pNode->data = data;
    pNode->next = head;
    return pNode;
}


/******************************************************  linked_list_destroy */
void linked_list_destroy( Node** head )
{
    Node* phead = *head;
    Node* prevNode = NULL;

    printf( "\nDestroy List:\n");


    while( phead )
    {
        prevNode = phead;
        phead = phead->next;
        printf( "Deleting %d\n", prevNode->data );
        prevNode->data = 0;
        prevNode->next = NULL;
        free( prevNode );
    }
    *head = NULL;
}


/***************************************************************  print_list */
void print_list( Node *head )
{
    Node* pHead = head;

    printf( "\nPrint list:\n");

    while( pHead )
    {
        printf( "%d ", pHead->data );
        pHead = pHead->next;
    }
}


/***********************************************************  delete nodes */
void delete_node( Node **head, int data )
{
    Node* phead = *head;
    Node* prev  = NULL;

    printf( "\nDelete %d from list:\n", data );

    //if( !head ) return;

    while(( phead ) && ( phead->data != data ))
    {
        prev = phead;
        phead = phead->next;
    }

    if( !phead ) 
    {
        printf( "Sorry, %d is not in the list.\n", data);
    }

    else
    {
        prev->next = phead->next;
        free( phead );
    }
    return;
}


/********************************************************* bytes of list */
void bytes_of_list( Node* head )
{
    Node* phead = head;
    size_t bytes_total = 0;

    while( phead )
    {
        bytes_total += sizeof( *phead );
        phead = phead->next;
    }

    printf( "The current size of the list is %lu bytes.\n", bytes_total );
    //return bytes_total;
}

我希望当我单击private void OnMouseOver() { if(Input.GetMouseButtonDown(0)) { line.enabled = !line; if (line.enabled == true) CreatePoints(); } }时，将启用该行，然后单击GameObject，然后再次单击，该行将为false，并且不会创建点。

更新：

添加了一个计数器，因此运行游戏时的默认状态为true，然后将其切换为false / true。

CreatePoints()

这很好用，但是使用这样的计数器是个好方法吗？

Answer 1

 if (Input.GetMouseButtonDown(0))
 {
   line.enabled = !line.enabled;
   if (line.enabled)
     CreatePoints();
 }

您不能直接访问游戏对象的启用/禁用状态。您需要使用 .enabled 检索它，并将其相反的位置设置为打开和关闭。

如何在鼠标点击ogameobject时禁用/启用LineRenderer？

1 个答案: