相位P2物理.如何在与另一个碰撞组碰撞时杀死组中的子弹(精灵）
Phaser P2 physics. How to kill a bullet(sprite) in a group on collision with another collision group
我对javaScript和编程很陌生，我正在尝试使用Phaser API制作一个一对一的2D坦克游戏。
在过去的两天里，我一直在想如何杀死击中另一辆坦克的一颗子弹。我确实通过街机物理和Phaser坦克游戏的例子让它发挥了作用。但到目前为止，我似乎无法将我的知识转化为我目前正在使用并希望坚持的P2物理。
这是我用来建造两辆坦克的坦克建造师，每辆坦克都有自己的子弹群，名为子弹，在最底部我有一个名为射击的功能，它可以重置子弹并使其飞向目标（这个特定的功能主要取自相位器坦克的例子）
var tank = function(playerIndex, startX, startY, facing, keyLeft, keyRight, keyUp, keyDown, keyTLeft, keyTRight, keyShoot) {
this.playerIndex = playerIndex.toString();;
this.tankBody;
this.tankTurret;
this.facing = facing;
this.bullets;
this.fireRate = 200;
this.nextFire = 0;
this.health = 100;
this.isAlive = true;
this.bodyTurnSpeed = 2;
this.turretTurnSpeed = 2;
this.currentSpeed = 0;
this.maxSpeed = 50;
this.keyLeft = keyLeft;
this.keyRight = keyRight;
this.keyUp = keyUp;
this.keyDown = keyDown;
this.keyTLeft = keyTLeft;
this.keyTRight = keyTRight;
this.keyShoot = keyShoot;
this.create = function() {
if (this.playerIndex === "1") {
this.tankBody = game.add.sprite(startX, startY, "body_player_one");
this.tankTurret = game.add.sprite(startX, startY, "turret_player_one");
} else if (this.playerIndex === "2") {
this.tankBody = game.add.sprite(startX, startY, "body_player_two");
this.tankTurret = game.add.sprite(startX, startY, "turret_player_two");
}
this.tankBody.anchor.setTo(0.5, 0.5);
this.tankTurret.anchor.setTo(0.5, 0.5);
game.physics.p2.enable([this.tankBody]);
this.tankBody.body.immovable = false;
this.tankBody.body.collideWorldBounds = true;
this.tankBody.body.debug = false;
this.tankBody.body.fixedRotation = true;
this.tankBody.body.mass = 50;
// this.tankBody.body.kinematic = true;
this.bullets = game.add.group();
this.bullets.enableBody = true;
this.bullets.physicsBodyType = Phaser.Physics.P2JS;
this.bullets.createMultiple(100, 'bullet', 0, false);
this.bullets.setAll('anchor.x', 0.5);
this.bullets.setAll('anchor.y', 0.5);
this.bullets.setAll('outOfBoundsKill', true);
this.bullets.setAll('checkWorldBounds', true);
switch (this.facing) {
case "left":
this.tankBody.rotation = this.tankBody.body.rotation = Phaser.Math.degToRad(-90);
this.tankTurret.rotation = Phaser.Math.degToRad(-90);
break;
case "right":
this.tankBody.rotation = this.tankBody.body.rotation = Phaser.Math.degToRad(90);
this.tankTurret.rotation = Phaser.Math.degToRad(90);
break;
case "up":
this.tankBody.rotation = this.tankBody.body.rotation = Phaser.Math.degToRad(0);
this.tankTurret.rotation = Phaser.Math.degToRad(0);
break;
case "down":
this.tankBody.rotation = this.tankBody.body.rotation = Phaser.Math.degToRad(180);
this.tankTurret.rotation = Phaser.Math.degToRad(180);
break;
}
}
this.update = function() {
if (this.isAlive) {
if (game.input.keyboard.isDown(this.keyLeft)) {
this.tankBody.rotation = this.tankBody.body.rotation -= Phaser.Math.degToRad(this.bodyTurnSpeed);
}
if (game.input.keyboard.isDown(this.keyRight)) {
this.tankBody.rotation = this.tankBody.body.rotation += Phaser.Math.degToRad(this.bodyTurnSpeed);;
}
if (game.input.keyboard.isDown(this.keyUp)) {
this.tankBody.body.moveForward(50);
} else if (game.input.keyboard.isDown(this.keyDown)) {
this.tankBody.body.moveBackward(50);
} else this.tankBody.body.setZeroVelocity();
if (game.input.keyboard.isDown(this.keyTLeft)) {
this.tankTurret.rotation -= Phaser.Math.degToRad(this.turretTurnSpeed);
} else if (game.input.keyboard.isDown(this.keyTRight)) {
this.tankTurret.rotation += Phaser.Math.degToRad(this.turretTurnSpeed);
}
if (game.input.keyboard.isDown(this.keyShoot)) {
this.shoot();
}
this.tankTurret.x = this.tankBody.x;
this.tankTurret.y = this.tankBody.y;
} else {
this.tankTurret.kill();
this.tankBody.kill();
}
}
this.shoot = function() {
if (game.time.now > this.nextFire && this.bullets.countDead() > 0) {
this.nextFire = game.time.now + this.fireRate;
var bullet = this.bullets.getFirstExists(false);
bullet.reset(this.tankTurret.x + this.tankTurret.width / 2 * Math.cos(this.tankTurret.rotation - Phaser.Math.degToRad(90)),
this.tankTurret.y + this.tankTurret.width / 2 * Math.sin(this.tankTurret.rotation - Phaser.Math.degToRad(90)));
bullet.body.rotation = this.tankTurret.rotation;
bullet.body.mass = 100;
bullet.body.moveForward(500);
}
}
}这是我分配碰撞群并使它们相互碰撞的地方，这里的一切都按预期进行，但子弹没有消失
function create() {
game.add.sprite(0, 0, "background_one");
game.physics.startSystem(Phaser.Physics.P2JS);
game.physics.p2.setImpactEvents(true);
//creating the collisiongroups
var bulletsCollisionGroup = game.physics.p2.createCollisionGroup();
var playerOneCollisionGroup = game.physics.p2.createCollisionGroup();
var playerTwoCollisionGroup = game.physics.p2.createCollisionGroup();
var wallCollisionGroup = game.physics.p2.createCollisionGroup();
//sets the objects to collide with gamestage borders (prevent objects from moving out of bounds)
game.physics.p2.updateBoundsCollisionGroup();
//creating players, each player holds its own bulletgroup
player_one.create();
player_two.create();
//creates the tiles (mouseclick to place)
createTiles();
//sets sprites to different collisiongroups
player_one.tankBody.body.setCollisionGroup(playerOneCollisionGroup);
for (var i = 0; i < player_one.bullets.children.length; i++) //player_one bullets
{
player_one.bullets.children[i].body.setCollisionGroup(bulletsCollisionGroup);
}
player_two.tankBody.body.setCollisionGroup(playerTwoCollisionGroup);
for (var i = 0; i < player_two.bullets.children.length; i++) //player_two bullets
{
player_two.bullets.children[i].body.setCollisionGroup(bulletsCollisionGroup);
}
for (var i = 0; i < tiles.children.length; i++) //tiles
{
tiles.children[i].body.setCollisionGroup(wallCollisionGroup);
}
//makes the collisiongroups collide with eachother
player_one.tankBody.body.collides([playerTwoCollisionGroup, wallCollisionGroup, bulletsCollisionGroup]);
player_two.tankBody.body.collides([playerOneCollisionGroup, wallCollisionGroup, bulletsCollisionGroup]);
for (var i = 0; i < tiles.children.length; i++) //tiles with everything
{
tiles.children[i].body.collides([playerOneCollisionGroup, playerTwoCollisionGroup, bulletsCollisionGroup]);
}
for (var i = 0; i < player_one.bullets.children.length; i++) //player_one bullets with everything
{
player_one.bullets.children[i].body.collides([wallCollisionGroup]);
player_one.bullets.children[i].body.collides(playerTwoCollisionGroup, function() {
bulletHitPlayer(player_two)
}, this);
}
for (var i = 0; i < player_two.bullets.children.length; i++) //player_two bullets with everything
{
player_two.bullets.children[i].body.collides([wallCollisionGroup]);
player_two.bullets.children[i].body.collides(playerOneCollisionGroup, function() {
bulletHitPlayer(player_one)
}, this);
}
}这是我试图在与坦克碰撞时使用的回调函数，它似乎在有重叠的街机物理中起作用
function bulletHitPlayerOne(tank, bullet) {
bullet.kill()
tank.health -= 20;
if (player.health <= 0) {
tank.isAlive = false;
}
}这就是我尝试将上面的函数实现到我的collisionHandler的方式
for (var i = 0; i < player_two.bullets.children.length; i++) {
player_two.bullets.children[i].body.collides(playerOneCollisionGroup, bulletHitPlayerOne, this);
}现在，我已经尝试了各种不同的方法来解决这个问题，但我完全陷入了困境，我开始认为我不能在启用P2物理的情况下杀死一个小组中的精灵（但话说回来，为什么它不起作用？）
我做了seacrh，并试图阅读尽可能多的文件，但对于这个特殊的问题，我似乎独自一人：）
感谢您抽出时间！
/Martin
这样的东西应该可以工作。
Game.prototype = {
create: function(){
//...
var bulletsCollisionGroup = game.physics.p2.createCollisionGroup();
var playerOneCollisionGroup = game.physics.p2.createCollisionGroup();
//....
this.bullets = game.add.group();
this.bullets.enableBody = true;
this.bullets.physicsBodyType = Phaser.Physics.P2JS;
this.bullets.createMultiple(100, 'bullet', 0, false);
this.bullets.setAll('anchor.x', 0.5);
this.bullets.setAll('anchor.y', 0.5);
this.bullets.setAll('outOfBoundsKill', true);
this.bullets.setAll('checkWorldBounds', true);
this.bullets.forEach(function(bullet){
bullet.body.setCollisionGroup(bulletsCollisionGroup);
bullet.body.collides(playerOneCollisionGroup);
});
player.body.setCollisionGroup(playerOneCollisionGroup);
player.body.collides(bulletsCollisionGroup, this.hit, this);
},
/...
hit: function(player,bullet){
bullet.parent.sprite.kill();
}
}
请记住，玩家会与子弹发生碰撞，在子弹被杀死之前，子弹会改变速度、加速度和其他特性。您可能希望使用onBeginContact或BroadphaseCallback
相关文章：
- 如何在HTML列表中添加事件's子弹
- IE7-FIX下的总碰撞
- 逐像素碰撞检测弹球
- Highcharts多个Y轴绘图带碰撞
- 砖块和球之间的碰撞检测(使用数字数组）
- 为Phaser创建碰撞形状
- 为什么我应该使用带有碰撞检测的四叉树
- 四元数或 3 角，碰撞反应..3D
- 具有多个块的html5画布碰撞检测
- 为什么潜水器发生碰撞
- D3js地图标记碰撞检测
- 在多个子弹出窗口之间切换控制
- javascript中两个正方形之间的碰撞检测
- 在类似俄罗斯方块的游戏中碰撞后没有显示的物体
- 将CSS从父窗口附加到子弹出窗口
- 向屏幕外发射子弹
- 从子弹出子窗口访问变量
- 如何使碰撞函数在Javascript中正常工作
- 相位P2物理.如何在与另一个碰撞组碰撞时杀死组中的子弹(精灵）
- 为什么子弹与敌人的碰撞功能不起作用?
