How would I make it so I have a enemy that uses a rigidbody that is dynamic, it can have a animation use where if it sees the player is play’s a running animation but if it does not it plays a walking animation. It can run into things, and finally it has a chase theme that plays when it sees the player.
It seems like a lot which it is, but it will pay off and make games with enemy’s 10x better.
What we could work off of Credit to @Albertos:
var Enemy = pc.createScript('enemy');
Enemy.attributes.add('enemyCamera', {type: 'entity', title: 'Camera Entity'});
Enemy.attributes.add('enemyTarget', {type: 'entity', title: 'Target Entity'});
Enemy.attributes.add('enemyGround', {type: 'entity', title: 'Ground Entity'});
Enemy.attributes.add('enemySpeed', {type: 'number', default: 0.1, title: 'Enemy Speed'});
// initialize code called once per entity
Enemy.prototype.initialize = function() {
this.enemyCanSeeTarget = false;
this.enemyDestination = new pc.Entity();
};
// update code called every frame
Enemy.prototype.update = function(dt) {
this.searchTarget();
this.detectObstacle();
this.moveEnemy(dt);
};
Enemy.prototype.moveEnemy = function (dt) {
var destination = new pc.Vec3(this.enemyDestination.getPosition().x, 1, this.enemyDestination.getPosition().z);
var distanceToDestination = this.entity.getPosition().distance(destination);
// move the enemy based on the current state
if (!this.enemyCanSeeTarget) {
if (distanceToDestination > 0.1) {
this.entity.lookAt(destination);
this.entity.translateLocal(0,0, -this.enemySpeed*dt);
}
else {
this.randomDestination();
}
}
else {
this.entity.lookAt(this.enemyDestination.getPosition());
if (distanceToDestination > 2) {
this.entity.translateLocal(0,0, -this.enemySpeed*dt*2);
}
}
};
Enemy.prototype.detectObstacle = function () {
this.app.systems.rigidbody.raycastFirst(this.entity.getPosition(), this.enemyDestination.getPosition(), function (result) {
// check if there is an obstacle in the way
// prevent the enemy is moving inside an obstacle
if (result.entity.name == 'Obstacle') {
var distanceToObstacle = this.entity.getPosition().distance(result.point);
if (distanceToObstacle < 2) {
this.randomDestination();
}
}
}.bind(this));
};
Enemy.prototype.searchTarget = function () {
var target = this.enemyTarget.getPosition();
var distanceToTarget = this.entity.getPosition().distance(target);
// check if target is in range, so close enough to see
if (distanceToTarget < 40) {
target.sub(this.entity.getPosition()).normalize();
var dot = target.dot(this.entity.forward);
// check if target is front, so spottable or already spotted
if (dot > 0.5 || this.enemyCanSeeTarget) {
this.app.systems.rigidbody.raycastFirst(this.entity.getPosition(), this.enemyTarget.getPosition(), function (result) {
// check if target is in view, so no obstacles in the way
if (result.entity.name == 'Player') {
this.enemyCanSeeTarget = true;
this.enemyDestination.setPosition(this.enemyTarget.getPosition().x, 1, this.enemyTarget.getPosition().z);
}
else {
this.enemyCanSeeTarget = false;
}
}.bind(this));
}
else {
this.enemyCanSeeTarget = false;
}
}
else {
this.enemyCanSeeTarget = false;
}
};
Enemy.prototype.randomDestination = function () {
var xPosition = pc.math.random(-this.enemyGround.getLocalScale().x/2, this.enemyGround.getLocalScale().x/2);
var zPosition = pc.math.random(-this.enemyGround.getLocalScale().z/2, this.enemyGround.getLocalScale().z/2);
this.enemyDestination.setPosition(xPosition, 1, zPosition);
};