#include "random_generator.hpp"
#include "object/sprite_particle.hpp"
-static const float FLYTIME = 1.0;
-static const float FLYSPEED = -100.0;
-
namespace {
- const float PUFF_PROBABILITY = 0.1; /**< chanche of puffs being spawned in the current cycle */
- const float PUFF_INTERVAL_MIN = 0.1; /**< spawn new puff of smoke at most that often */
- const float PUFF_INTERVAL_MAX = 1.1; /**< spawn new puff of smoke at least that often */
+ const float PUFF_INTERVAL_MIN = 4.0f; /**< spawn new puff of smoke at most that often */
+ const float PUFF_INTERVAL_MAX = 8.0f; /**< spawn new puff of smoke at least that often */
}
FlyingSnowBall::FlyingSnowBall(const lisp::Lisp& reader)
- : BadGuy(reader, "images/creatures/flying_snowball/flying_snowball.sprite")
+ : BadGuy(reader, "images/creatures/flying_snowball/flying_snowball.sprite")
{
- physic.enable_gravity(false);
+ physic.enable_gravity(true);
}
FlyingSnowBall::FlyingSnowBall(const Vector& pos)
- : BadGuy(pos, "images/creatures/flying_snowball/flying_snowball.sprite")
+ : BadGuy(pos, "images/creatures/flying_snowball/flying_snowball.sprite")
{
- physic.enable_gravity(false);
+ physic.enable_gravity(true);
}
void
writer.end_list("flyingsnowball");
}
-void
-FlyingSnowBall::activate()
+void
+FlyingSnowBall::initialize()
{
sprite->set_action(dir == LEFT ? "left" : "right");
- mode = FLY_UP;
- physic.set_velocity_y(FLYSPEED);
- timer.start(FLYTIME/2);
+}
+
+void
+FlyingSnowBall::activate()
+{
puff_timer.start(systemRandom.randf(PUFF_INTERVAL_MIN, PUFF_INTERVAL_MAX));
+ normal_propeller_speed = systemRandom.randf(0.95, 1.05);
}
bool
-FlyingSnowBall::collision_squished(Player& player)
+FlyingSnowBall::collision_squished(GameObject& object)
{
sprite->set_action(dir == LEFT ? "squished-left" : "squished-right");
- kill_squished(player);
+ physic.set_acceleration_y(0);
+ physic.set_velocity_y(0);
+ kill_squished(object);
return true;
}
-HitResponse
-FlyingSnowBall::collision_solid(GameObject& , const CollisionHit& hit)
+void
+FlyingSnowBall::collision_solid(const CollisionHit& hit)
{
- if(fabsf(hit.normal.y) > .5) { // hit floor or roof?
+ if(hit.top || hit.bottom) {
physic.set_velocity_y(0);
}
-
- return CONTINUE;
}
void
-FlyingSnowBall::active_update(float elapsed_time)
+FlyingSnowBall::active_update(float elapsed_time)
{
- if(timer.check()) {
- if(mode == FLY_UP) {
- mode = FLY_DOWN;
- physic.set_velocity_y(-FLYSPEED);
-
- // stop puffing
- puff_timer.stop();
-
- } else if(mode == FLY_DOWN) {
- mode = FLY_UP;
- physic.set_velocity_y(FLYSPEED);
-
- // roll a dice whether to start puffing
- if (systemRandom.randf(0, 1) < PUFF_PROBABILITY) {
- puff_timer.start(systemRandom.randf(PUFF_INTERVAL_MIN, PUFF_INTERVAL_MAX));
- }
-
- }
- timer.start(FLYTIME);
+
+ const float grav = physic.get_gravity()*100;
+ if (get_pos().y > start_position.y + 2*32) {
+
+ // Flying too low - increased propeller speed
+ physic.set_acceleration_y(-grav*1.2);
+
+ physic.set_velocity_y(physic.get_velocity_y() * 0.99);
+
+ } else if (get_pos().y < start_position.y - 2*32) {
+
+ // Flying too high - decreased propeller speed
+ physic.set_acceleration_y(-grav*0.8);
+
+ physic.set_velocity_y(physic.get_velocity_y() * 0.99);
+
+ } else {
+
+ // Flying at acceptable altitude - normal propeller speed
+ physic.set_acceleration_y(-grav*normal_propeller_speed);
+
}
+
movement=physic.get_movement(elapsed_time);
Player* player = this->get_nearest_player();
Vector ppos = bbox.get_middle();
Vector pspeed = Vector(systemRandom.randf(-10, 10), 150);
Vector paccel = Vector(0,0);
- Sector::current()->add_object(new SpriteParticle("images/objects/particles/smoke.sprite", ppos, ANCHOR_MIDDLE, pspeed, paccel, LAYER_OBJECTS-1));
+ Sector::current()->add_object(new SpriteParticle("images/objects/particles/smoke.sprite", "default", ppos, ANCHOR_MIDDLE, pspeed, paccel, LAYER_OBJECTS-1));
puff_timer.start(systemRandom.randf(PUFF_INTERVAL_MIN, PUFF_INTERVAL_MAX));
+
+ normal_propeller_speed = systemRandom.randf(0.95, 1.05);
+ physic.set_velocity_y(physic.get_velocity_y() - 50);
}
}