C语言-链表流星雨（EsayX）

刷B站看到的，做个玩玩。IDE：Visual Studio 2022。依赖EsayX图形库

1-效果

2-程序

/*
链表流星雨单文件版本
依赖EsayX图形库
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <graphics.h>

typedef struct Rain
{
	int x;
	int y;
	char str[20];
}ElemType;
//定义节点
typedef struct LNode
{
	struct LNode* next;
	ElemType data;
}Node, * LinkList;

//链表函数
LinkList createList();
void push_back(LinkList list, ElemType val);
void pop_back(LinkList list);
void showAll(LinkList list);
bool empty(LinkList);
//数字雨函数

//初始化数字雨
void initRain(LinkList list, int size)
{
	for (int i = 0; i < size; i++)
	{
		struct Rain newRain;
		newRain.x = i * 15;
		newRain.y = rand() % getheight();
		for (int i = 0; i < 19; i++)
		{
			newRain.str[i] = rand() % 26 + 'A';
		}

		push_back(list, newRain);
	}

}
//绘制数字雨
void drawRain(LinkList list)
{
	LinkList curNode = list->next;
	while (curNode)
	{
		for (int i = 0; i < 19; i++)
		{
			settextcolor(RGB(0, 255 - i * 13, 0));
			outtextxy(curNode->data.x, curNode->data.y - i * 15, curNode->data.str[i]);
		}
		curNode = curNode->next;
	}
}
//移动一根数字雨
void moveRain(LinkList node)
{
	node->data.y++;
	if (node->data.y > getheight())
	{
		node->data.y = 0;
	}
}
typedef void(*FUN)(LinkList node);//函数指针
//移动所有数字雨
void moveAllRain(LinkList list, FUN fun)
{
	LinkList curNode = list;
	while (curNode)
	{
		fun(curNode);
		curNode = curNode->next;
	}
}

int main()
{
	//创建一个图形窗口
	initgraph(960, 640);
	//初始化一个链表
	LinkList list = createList();
	//初始化数字雨，70根
	initRain(list, 70);

	BeginBatchDraw();
	while (true)
	{
		cleardevice();
		//绘制数字雨
		drawRain(list);
		//移动所有数字雨
		moveAllRain(list, moveRain);
		FlushBatchDraw();
	}
	EndBatchDraw();
}

//创建带头节点的链表
LinkList createList()
{
	LinkList headNode = (LinkList)calloc(1, sizeof(Node));
	if (!headNode)
		return NULL;
	return headNode;
}
//往链表中插入元素
void push_back(LinkList list, ElemType val)
{
	LinkList newNode = (LinkList)calloc(1, sizeof(Node));
	if (!newNode)
		return;
	newNode->data = val;

	LinkList curNode = list;
	while (curNode->next != NULL)
	{
		curNode = curNode->next;
	}
	curNode->next = newNode;

}
//删除尾部元素
void pop_back(LinkList list)
{
	if (empty(list))
		return;
	LinkList curNode = list;
	while (curNode->next->next != NULL)
	{
		curNode = curNode->next;
	}
	free(curNode->next);
	curNode->next = NULL;
}
//遍历所有元素
void showAll(LinkList list)
{
	LinkList curNode = list->next;
	while (curNode)
	{
		//printf("%d ", curNode->data);
		curNode = curNode->next;
	}
	//printf("\n");
}
//判断链表是否为空
bool empty(LinkList list)
{
	return list->next == NULL;
}