【精选】对随机粒子玩法的简单探索（C语言简单版本）

#include<stdio.h>
#include<easyx.h>
#include<graphics.h>
#include <windows.h>
#include <stdlib.h>
#include <string.h>
#include<iostream>
#include<math.h>
#include<time.h>
#define NUM_OF_BALLS 300
#define PI 3.14
typedef struct {
	int x;
	int y;
	int vx;
	int vy;
	COLORREF color;
}ball;
int main()
{
	srand(time(0));
	initgraph(1400, 800, EW_SHOWCONSOLE);

	int r = 10;
	ball* balls = (ball*)malloc(sizeof(ball) * NUM_OF_BALLS);
	if (balls == NULL)
	{
		return -1;
	}

	for (int i = 0; i < NUM_OF_BALLS; i++)
	{
		int m, n;
		m = 0 + r;
		n = 1400 - r;
		balls[i].x = rand() % (n - m + 1) + m;
		m = 0 + r;
		n = 800 - r;
		balls[i].y = rand() % (n - m + 1) + m;
		balls[i].color = HSVtoRGB((float)(rand() % 360), 0.8f, 0.9f);

		m = 3;
		n = 8;
		int v = rand() % (n - m + 1) + m;
		double theta;
		theta = rand() % 360;
		balls[i].vx = v * cos(theta * PI / 180);
		balls[i].vy = v * sin(theta * PI / 180);
	}

	BeginBatchDraw();
	while (1)
	{
		cleardevice();
		for (int i = 0; i < NUM_OF_BALLS; i++)
		{
			setfillcolor(balls[i].color);
			fillcircle(balls[i].x, balls[i].y, r);
		}

		FlushBatchDraw();

		Sleep(40);


		for (int i = 0; i < NUM_OF_BALLS; i++)
		{
			if (balls[i].y <= 0 - r || balls[i].y >= 800 + r)
			{
				balls[i].vy = -balls[i].vy;
			}
			if (balls[i].x >= 1400 - r || balls[i].x <= 0 + r)
			{
				balls[i].vx = -balls[i].vx;
			}
			balls[i].x += balls[i].vx;
			balls[i].y += balls[i].vy;
		}
		
		if (MouseHit())//判断是否有鼠标信息
		{
			MOUSEMSG msg = GetMouseMsg();//接收鼠标信息 
			for (int i = 0; i < NUM_OF_BALLS; i++)
			{
				if (msg.x < balls[i].x)
				{
					balls[i].x = balls[i].x - 30;
				}
				if (msg.x > balls[i].x)
				{
					balls[i].x += 30;
				}
				if (msg.y < balls[i].y)
				{
					balls[i].y -= 30;
				}
				if (msg.y > balls[i].y)
				{
					balls[i].y += 30;
				}
				if (msg.x == balls[i].x && msg.y == balls[i].y)
				{
					break;
				}
			}
	
			printf("坐标为（%d,%d）\n", msg.x, msg.y);
			switch (msg.uMsg)
			{
				case WM_LBUTTONDOWN:
					//NO的区域
					if (msg.x > 0 && msg.x < 1400 && msg.y>0 && msg.y < 800)
					{
						printf("坐标为（%d,%d）无所谓，我会出手！\n", msg.x, msg.y);
						
					}
				break;
			}
		}
	}
	EndBatchDraw();
	closegraph();
	return 0;
}