// sets direction
void Turret::lookAt(const float3 &pos, bool at_once) { //TODO: rounding
float3 center = boundingBox().center();
float2 dir(pos.x - center.x, pos.z - center.z);
float len = length(dir);
if(len < constant::epsilon)
return;
dir = dir / len;
m_target_angle = vectorToAngle(dir);
if(at_once)
setDirAngle(m_target_angle);
}
//TODO: redundant initialization?
Entity::Entity(const Sprite &sprite, const XMLNode &node) :m_sprite(sprite) {
m_pos = node.attrib<float3>("pos");
resetAnimState();
setDirAngle(node.attrib<float>("angle", 0.0f));
}
void Entity::setDir(const float2 &vec) {
setDirAngle(vectorToAngle(vec));
}
void Turret::nextFrame() {
setDirAngle(blendAngles(dirAngle(), m_target_angle, constant::pi / 4.0f));
ThinkingEntity::nextFrame();
}