bool Turret::canFollowTarget(DrawableObject & target, bool TargetInvisible)
{
float distance = (float)sqrt(pow(target.getPosition().x - _position.x,2) +
pow(target.getPosition().y - _position.y, 2));
Angle direction = (float)atan2(_position.y - target.getPosition().y,
_position.x - target.getPosition().x) / _pi * 180 ;
if(distance < _lockDistance && (direction.getAngle() - DrawableObject::_direction.getAngle() < 5
&& direction.getAngle() - DrawableObject::_direction.getAngle() > -5)
&& (direction > _range.x && direction < _range.y)
&& !TargetInvisible)
{
DrawableObject::_direction = direction;
return true;
}
else
return false;
}
void DrawStack3D::updatePositions() {
tilt*=0.95;
int len = stack.length();
float cosTilt = cos(tilt);
float sinTilt = sin(tilt);
for(int i = 0; i < len; i++) {
DrawableObject* e = stack.getElement(i);
vec3 charPos = e->getPosition();
float dy = charPos.y-camera.y;
float dx = charPos.x-camera.x;
float dz = charPos.z-camera.z;
float charAngle = atan2f(dy, dx);
float dAngle = mod(angle, 2.0f*PI) - mod(charAngle, 2.0f*PI);
//Clamp dAngle between -PI and PI
if(dAngle > PI) {
dAngle -= PI*2.0f;
}
if(dAngle < -PI) {
dAngle += PI*2.0f;
}
float distance = length(vec3(dx, dy, dz));
//Used for weapon 'raycasts'.
e->setPlayerAngle2(charAngle);
e->setPlayerAngle(dAngle);
e->setPlayerDistance(distance);
//
float absDAngle = abs(dAngle);
distance = length(vec3(dx, dy, dz));
if(distance > DETAIL_OBJECT_DESTROY_DISTANCE && e->entityType == 1) {
//Destroy detail object.
e->destroy = true;
}
if(distance > 500.0f || dAngle > PI/2 || dAngle < -PI/2) {
e->setVisibility(false);
} else {
e->setVisibility(true);
//Fake some field of view perspective stuff.
float dX = dAngle*FIELD_OF_VIEW_WIDTH*(0.9f+0.1f*abs(sin(dAngle)));
float dZ = 400.0f*(dz)/distance;
float scale = 1.0f/distance;
if(distance < PI) {
dZ += cos(distance/2.0f)*150.0f;
}
//Tilt offsets:
float oX = -sinTilt*dZ+cosTilt*dX;
float oY = sinTilt*dX+cosTilt*dZ;
e->setImageParameters(vec2(640+oX, 360+oY), scale, tilt);
e->priority = scale;
}
}
}