我有一个游戏,其中一个玩家由箭头键控制,另一个玩家由WSAD键控制。我在一个600x600的画布中设置了地图,并希望在游戏中的两个fill.Rect玩家之间添加碰撞,当两个玩家在一定半径范围内时,要么结束程序,要么显示文本,如“游戏结束”
以下是我的js、Html和Css代码(要查看代码片段,您必须转到“全屏”):
//Canvas mycan.style.display = "block"; mycan.height = 600; mycan.width = 600; //make players let player = {x:511, y: 541, w:29, h:29}; let player2 = {x:60, y:31, w:30, h:29}; //Context const ctx = mycan.getContext("2d"); //Start-position ctx.fillRect(player.x, player.y, player.w, player.h); ctx.fillRect(player2.x, player2.y, player2.w, player2.h); //No-smooth-movement window.onkeydown = move = (e) => { let key = e.keyCode; //player1(red) if (key === 68 && player2.x <= mycan.width-30) {player2.x += 30;} //right else if(key === 65 && player2.x >= 10) {player2.x -= 30;} //left else if(key === 83 && player2.y <= mycan.height-30) {player2.y += 30;} //down else if(key === 87 && player2.y >= 10) {player2.y -= 30;} //up //player2(blue) if (key === 39 && player.x <= mycan.width-25) {player.x += 30;} //right else if(key === 37 && player.x >= 10) {player.x -= 30;} //left else if(key === 40 && player.y <= mycan.height-25) {player.y += 30;} //down else if(key === 38 && player.y >= 10) {player.y -= 30;} //up } const draw = ()=>{ //player draw, and player colors ctx.clearRect(0,0, mycan.width, mycan.height); ctx.fillRect(player.x, player.y, player.w, player.h); ctx.fillStyle = "blue"; ctx.fillRect(player2.x,player2.y, player2.w, player2.h); ctx.fillStyle = 'red'; }; setInterval(()=>{ draw(); },1000/60); //collision //thsi is where i want to add collision
html, body { margin:20; padding: 20; } canvas { display: block; } #mycan { background-size: 30px 30px; background-image: linear-gradient(to right, black 1px, transparent 1px), linear-gradient(to bottom, black 1px, green 1px); }
<!DOCTYPE html> <html lang="en"> <head> <link rel="stylesheet" type="text/css" href="style.css"> <meta charset="utf-8" /> <canvas id = mycan > </canvas> <font color = 'blue'> <h1>Player1 = blue</h1></font color> <font color = 'red'> <h1>Player2 = red</h1></font color> </head> <body> <main> </main> <script src="script.js"></script> </body> </html>
我已经给你写了一个检查碰撞的函数。
我们首先检查 矩形 1 的左边缘是否比 矩形 2 的右边缘更靠右。我们还检查 rect1 的右边缘是否比 rect2 的左边缘更向左。
底边也是一样。
如果所有这些都为假,则矩形必须重叠。
雷雷