/** Returns the base animation for the actor. */
protected Animation getBase(Mobile actor) {
if (actor.isSet(Mobile.MOVING)) {
Animation anim = getMovement(actor);
if (anim != null) {
return anim;
}
}
if (actor.getTurnDirection() != 0) {
Animation anim = getRotation(actor);
if (anim != null) {
return anim;
}
}
return getIdle();
}
/**
* Configures and returns the appropriate movement animation for the actor.
*
* @param scale the actor scale.
* @param sets the movement set configs.
* @param movements the resolved movement animations.
*/
protected static Animation getMovement(
Mobile actor, float scale, ActorSpriteConfig.MovementSet[] sets, Animation[][] movements) {
// make sure we have movement animations
int mlen = movements.length;
if (mlen == 0) {
return null;
}
float sspeed = actor.getSpeed() / scale;
int idx = 0;
if (mlen > 1) {
float cdiff = Math.abs(sspeed - sets[0].speed);
for (int ii = 1; ii < sets.length; ii++) {
float diff = Math.abs(sspeed - sets[ii].speed);
if (diff < cdiff) {
cdiff = diff;
idx = ii;
}
}
}
// include a bias towards the lateral directions so that we're sure to use them
// when travelling diagonally
float angle =
(FloatMath.getAngularDifference(actor.getDirection(), actor.getRotation())
/ FloatMath.HALF_PI
+ 2.5f)
% 4f;
Animation movement;
if (angle <= 0.01f || angle >= 2.99f) {
movement = movements[idx][3];
} else if (angle < 0.99f) {
movement = movements[idx][0];
} else if (angle <= 2.01f) {
movement = movements[idx][1];
} else {
movement = movements[idx][2];
}
movement.setSpeed(sspeed / sets[idx].speed);
return movement;
}
/**
* Configures and returns the appropriate rotation animation for the actor.
*
* @param sets the rotation set configs.
* @param rotations the resolved rotation animations.
*/
protected static Animation getRotation(
Mobile actor, ActorSpriteConfig.RotationSet[] sets, Animation[][] rotations) {
// make sure we have rotation animations
int rlen = rotations.length;
if (rlen == 0) {
return null;
}
float rate = actor.getTurnRate();
int idx = 0;
if (rlen > 1) {
float cdiff = Math.abs(rate - sets[0].rate);
for (int ii = 1; ii < sets.length; ii++) {
float diff = Math.abs(rate - sets[ii].rate);
if (diff < cdiff) {
cdiff = diff;
idx = ii;
}
}
}
Animation rotation = rotations[idx][actor.getTurnDirection() > 0 ? 0 : 1];
rotation.setSpeed(rate / sets[idx].rate);
return rotation;
}