this.standing

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this.standing水平走的时候是true，纵向有速度是false,斜面轻微纵向速度也true

var accel = this.standing ? this.accelG: this.accelA;

if (this.currentAnim === this.anims.run && !this.sounds.walk.looping) {

this.sounds.walk.loop();

}

if (this.currentAnim !== this.anims.run && this.sounds.walk.looping) {

this.sounds.walk.stopLoop();

}

if (this.standing && ig.input.pressed('jump')) {

this.sounds.jump.play();

}

if (ig.input.state('left')) {

this.accel.x = -accel;

this.flip = true;

} else if (ig.input.state('right')) {

this.accel.x = accel;

this.flip = false;

} else if (!this.standing) {

this.vel.x *= 0.9;

this.accel.x *= 0.9;

if (Math.abs(this.vel.x) < 5) {

this.vel.x = 0;

}

if (Math.abs(this.accel.x) < 5) {

this.accel.x = 0;

}

} else {

this.accel.x = 0;

}

if (this.jumpMax && this.standing) {

this.jumpMax = false;

}

if (ig.input.pressed('jump') && this.standing) {

this.jumpMax = false;

this.standing = false;

Delay.delay(this, 0.35,

function() {

this.jumpMax = true;

});

}

if (!this.jumpMax && !this.standing) {

this.vel.y = -this.jump / 1.5;

}

if (!ig.input.state('jump')) {

this.jumpMax = true;

}

if (this.vel.x !== 0 && (ig.input.state('right') || ig.input.state('left'))) {

this.currentAnim = this.anims.run;

} else {

this.currentAnim = this.anims.idle;

}

if (!this.standing && this.vel.y < 0) {

this.currentAnim = this.anims.jump;

} else if (!this.standing && this.vel.y > 0) {

this.currentAnim = this.anims.fall;

}

this.currentAnim.flip.x = this.flip;

ig.Entity.prototype.update.call(this);

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