Javascript 如何在HTML5画布中进行冲突?
我正在用JavaScript HTML5画布制作一个游戏。这是一款2D雷击游戏,但我搞不懂碰撞检测。。。 我已经向我兄弟求助了,但他不知道如何帮助我 在HTML5画布JavaScript中进行冲突检测。 如果有人能帮助我,我将非常感激 这是我的游戏代码:Javascript 如何在HTML5画布中进行冲突?,javascript,html,canvas,collision,minecraft,Javascript,Html,Canvas,Collision,Minecraft,我正在用JavaScript HTML5画布制作一个游戏。这是一款2D雷击游戏,但我搞不懂碰撞检测。。。 我已经向我兄弟求助了,但他不知道如何帮助我 在HTML5画布JavaScript中进行冲突检测。 如果有人能帮助我,我将非常感激 这是我的游戏代码: var g = document.getElementById("canvas").getContext("2d"); setInterval(update, 1000/100); window.addEventListener("keydo
var g = document.getElementById("canvas").getContext("2d");
setInterval(update, 1000/100);
window.addEventListener("keydown", function(e) {
keys[e.keyCode] = true;
});
window.addEventListener("keyup", function(e) {
delete keys[e.keyCode];
});
var keys = [];
var player = {
x: 0,
y: 0,
isFalling: true,
};
var up = true;
var left = true;
var right = true;
var w = 10;
var h = 10;
var block_size = 20;
var m = {};
for(var x = 0; x < w; x++) {
m[x] = {};
for(var y = 0; y < w; y++) {
m[x][y] = "sky";
}
}
generateWorld();
function isColl(x1,y1,w1,h1,x2,y2,w2,h2) {
return(x1 <= x2 && x1+w1 >= x2 && y1 <= y2 && y1+h1 >= y2 || x2 <= x1 && x2+w2 >= x1 && y2 <= y1 && y2+h2 >= y1);
}
function update() {
g.fillStyle = "rgb(255,255,255)";
g.fillRect(0,0,200,200);
var dx = player.x/block_size;
var dy = player.y/block_size;
for(var x = 0; x < w; x++) {
for(var y = 0; y < h; y++) {
if(m[x][y] == "grass") {
g.fillStyle = "rgb(0,200,0)";
g.fillRect(x*20,y*20,20,20);
} else if(m[x][y] == "sky") {
g.fillStyle = "rgb(100,100,255)";
g.fillRect(x*20,y*20,20,20);
} else if(m[x][y] == "dirt") {
g.fillStyle = "rgb(100,40,0)";
g.fillRect(x*20,y*20,20,20);
} else if(m[x][y] == "grass") {
g.fillStyle = "rgb(0,0,255)";
g.fillRect(x*20,y*20,20,20);
} else {
g.fillStyle = "rgb(200,50,200)";
g.fillRect(x*20,y*20,20,20);
g.fillStyle = "rgb(0,0,0)";
g.fillText("404", (x*20), (y*20)+15);
}
}
}
g.fillStyle = "rgb(255,50,0)";
g.fillRect(player.x,player.y,20,20);
if(keys[38] && player.y > 0 && up) {
player.y--;
player.isFalling = false;
} else {
player.isFalling = true;
}
if(keys[39] && player.x < 180 && right) {
player.x++;
}
if(keys[37] && player.x > 0 && left) {
player.x--;
}
if(player.isFalling && player.y < 180) {
player.y++;
}
}
var g=document.getElementById(“画布”).getContext(“2d”);
设置间隔(更新,1000/100);
window.addEventListener(“向下键”,函数(e){
键[e.keyCode]=真;
});
window.addEventListener(“键控”,函数(e){
删除键[e.keyCode];
});
var键=[];
变量播放器={
x:0,,
y:0,
是的,
};
var up=真;
var left=真;
var-right=true;
var w=10;
var h=10;
var块大小=20;
var m={};
对于(变量x=0;x0&&up){
player.y--;
player.isFalling=false;
}否则{
player.isFalling=true;
}
if(键[39]&&player.x<180&&right){
player.x++;
}
if(键[37]&&player.x>0&&left){
player.x--;
}
如果(player.isFalling&&player.y<180){
player.y++;
}
}
谢谢 我想这可能会对你有很大帮助:
有两种方法可以做到这一点
function checkCollision_Sph(centerX,centerY,radius,centerX_2,centerY_2,radius_2){
distance = Math.sqrt((centerX_2 - centerX)^2 + (centerY_2 - centerY)^2)
if(distance <= (radius+radius_2)){
//Distance between spheres is less than the sum of theirs radius, colliding!
}
function checkCollision_Rec(x1,w1,y1,h1,x2,w2,y2,h2){
//x1, x2 = Left
//x1 + w1, x2 + w2 = Right
//y1, y2 = Bottom
//y1 - h1, y2 - h2 = Top
if((y1 < y2) ||
((y1 - h1) > y2) ||
(x1 > (x2 + w2)) ||
((x1 + w1) < x2)
){
//Is not colliding!
}
else{
//Is colliding!
}
功能检查碰撞(centerX,centerY,radius,centerX_2,centerY_2,radius_2){
距离=数学.sqrt((centerX_2-centerX)^2+(centerY_2-centerY)^2)
如果(距离我不明白!),我将开始使用JavaScript画布HTML5。我试图使代码适应我的游戏,但没有成功。。。