弹跳小球学习

主要知识点：为实现动态显示，可用清屏函数

1.实现小球自由落体（动态轨迹）

#include<stdio.h>
#include<windows.h>
#include<stdlib.h>

//实现小球的自由落体

int main()
{
	system("mode con cols=50 lines=12");
	int i, j;
	int l;
	int c = 20;

		for (l = 1; l <= 10; l++)
		{
			system("cls");
			for (i = 0; i < l; i++)
				printf("\n");
			for (j = 0; j < c; j++)
				printf(" ");
			printf("◎");

		}
	printf("\n");
	return 0;
}

​

2.实现小球的上下弹跳

#include<stdio.h>
#include<windows.h>
#include<stdlib.h>

//实现小球上下弹跳

int main()
{
	
	system("mode con cols=50 lines=25");
	int height = 10;
	int velocity = 1;

	int c = 20, l=0;
	int i, j;

	while (1)
	{
		Sleep(50);
		l = l + velocity;
		system("cls");
		for (i = 0; i < l; i++)
			printf("\n");
		for (j = 0; j < c - 1; j++)
			printf(" ");
		printf("●");
		
		if (l == height || l == 0)
			velocity = -velocity;
	}	
	return 0;
}

3.实现小球的抛物线弹跳

#include<stdio.h>
#include<windows.h>
#include<stdlib.h>

//实现小球上下弹跳

int main()
{

	system("mode con cols=50 lines=25");
	int height = 10;
	int width = 20;
	int velocity_l = 1;
	int velocity_c = 1;

	int c = 0, l = 0;
	int i, j;

	while (1)
	{
		Sleep(100);
		l = l + velocity_l;
		c = c + velocity_c;
		system("cls");
		for (i = 0; i < l; i++)
			printf("\n");
		for (j = 0; j < c - 1; j++)
			printf(" ");
		printf("●");

		if (l == height || l == 0)
		{
			velocity_l = -velocity_l;
			printf("\a");
		}
		if (c == 0 || c == width)
		{
			velocity_c = -velocity_c;
			printf("\a");
		}
	}
	return 0;
}

PS:用printf("\a")函数来实现球碰到边界时响铃。

4.实现抛物线的变速弹跳（由快变慢）

#include<stdio.h>
#include<windows.h>
#include<stdlib.h>

//实现小球上下弹跳

int main()
{

	system("mode con cols=50 lines=25");
	int height = 10;
	int width = 20;
	int velocity_l = 1;
	int velocity_c = 1;

	int c = 0, l = 0;
	int i, j;
	int h = 0;
	while (1)
	{
		Sleep(5+h);
		h = h +1;
		l = l + velocity_l;
		c = c + velocity_c;
		system("cls");
		for (i = 0; i < l; i++)
			printf("\n");
		for (j = 0; j < c - 1; j++)
			printf(" ");
		printf("●");

		if (l == height || l == 0)
		{
			velocity_l = -velocity_l;
			printf("\a");
		}
		if (c == 0 || c == width)
		{
			velocity_c = -velocity_c;
			printf("\a");
		}
	}
	return 0;
}