Rock Class Reference

#include <rock.hpp>

Inherits MovingSprite, and Portable.

Inherited by Lantern, and Trampoline.

List of all members.

Public Member Functions
	Rock (const Vector &pos, std::string spritename)
	Rock (const Reader &reader)
	Rock (const Reader &reader, std::string spritename)
void	collision_solid (const CollisionHit &hit)
	this function is called when the object collided with something solid
HitResponse	collision (GameObject &other, const CollisionHit &hit)
	this function is called when the object collided with any other object
void	update (float elapsed_time)
	This function is called once per frame and allows the object to update it's state.
void	grab (MovingObject &object, const Vector &pos, Direction dir)
	called each frame when the object has been grabbed.
void	ungrab (MovingObject &object, Direction dir)
Protected Attributes
Physic	physic
bool	on_ground
bool	grabbed
Vector	last_movement

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Detailed Description

Definition at line 26 of file rock.hpp.

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Constructor & Destructor Documentation

Rock::Rock	(	const Vector &	pos,
		std::string	spritename
	)

Definition at line 26 of file rock.cpp.

References COLGROUP_MOVING_STATIC, grabbed, on_ground, SoundManager::preload(), ROCK_SOUND, MovingObject::set_group(), and sound_manager.

                                                  :
  MovingSprite(pos, spritename),
  physic(),
  on_ground(),
  grabbed(),
  last_movement()
{
  sound_manager->preload(ROCK_SOUND);
  on_ground = false;
  grabbed = false;
  set_group(COLGROUP_MOVING_STATIC);
}

Rock::Rock

(

const Reader &

reader

)

Definition at line 39 of file rock.cpp.

References COLGROUP_MOVING_STATIC, grabbed, on_ground, SoundManager::preload(), ROCK_SOUND, MovingObject::set_group(), and sound_manager.

                               :
  MovingSprite(reader, "images/objects/rock/rock.sprite"),
  physic(),
  on_ground(),
  grabbed(),
  last_movement()
{
  sound_manager->preload(ROCK_SOUND);
  on_ground = false;
  grabbed = false;
  set_group(COLGROUP_MOVING_STATIC);
}

Rock::Rock	(	const Reader &	reader,
		std::string	spritename
	)

Definition at line 52 of file rock.cpp.

References COLGROUP_MOVING_STATIC, grabbed, on_ground, SoundManager::preload(), ROCK_SOUND, MovingObject::set_group(), and sound_manager.

                                                     :
  MovingSprite(reader, spritename),
  physic(),
  on_ground(),
  grabbed(),
  last_movement()
{
  sound_manager->preload(ROCK_SOUND);
  on_ground = false;
  grabbed = false;
  set_group(COLGROUP_MOVING_STATIC);
}

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Member Function Documentation

void Rock::collision_solid

(

const CollisionHit &

hit

)

[virtual]

this function is called when the object collided with something solid

Reimplemented from MovingObject.

Reimplemented in Trampoline.

Definition at line 77 of file rock.cpp.

References CollisionHit::bottom, CollisionHit::crush, MovingObject::get_pos(), grabbed, CollisionHit::left, on_ground, physic, SoundManager::play(), CollisionHit::right, ROCK_SOUND, Physic::set_velocity(), Physic::set_velocity_x(), Physic::set_velocity_y(), sound_manager, and CollisionHit::top.

Referenced by Trampoline::collision_solid().

{
  if(grabbed) {
    return;
  }
  if(hit.top || hit.bottom)
    physic.set_velocity_y(0);
  if(hit.left || hit.right)
    physic.set_velocity_x(0);
  if(hit.crush)
    physic.set_velocity(0, 0);

  if(hit.bottom  && !on_ground && !grabbed) {
    sound_manager->play(ROCK_SOUND, get_pos());
    on_ground = true;
  }
}

HitResponse Rock::collision	(	GameObject &	other,
		const CollisionHit &	hit
	)			[virtual]

this function is called when the object collided with any other object

Implements MovingObject.

Reimplemented in Lantern, and Trampoline.

Definition at line 96 of file rock.cpp.

References ABORT_MOVE, CollisionHit::bottom, FORCE_MOVE, Physic::get_velocity_y(), grabbed, Tile::HURTS, on_ground, and physic.

Referenced by Trampoline::collision(), and Lantern::collision().

{
  if(grabbed) {
    return ABORT_MOVE;
  }
  if(!on_ground) {
    if(hit.bottom && physic.get_velocity_y() > 200) {
      MovingObject* moving_object = dynamic_cast<MovingObject*> (&other);
      if(moving_object) {
        //Getting a rock on the head hurts. A lot.
        moving_object->collision_tile(Tile::HURTS);
      }
    }
    return FORCE_MOVE;
  }

  return FORCE_MOVE;
}

void Rock::update

(

float

elapsed_time

)

[virtual]

This function is called once per frame and allows the object to update it's state.

The elapsed_time is the time since the last frame in seconds and should be the base for all timed calculations (don't use SDL_GetTicks directly as this will fail in pause mode)

Reimplemented from MovingSprite.

Reimplemented in Trampoline.

Definition at line 66 of file rock.cpp.

References Physic::get_movement(), grabbed, MovingObject::movement, on_ground, physic, and Physic::set_velocity_x().

Referenced by Trampoline::update().

{
  if( grabbed )
    return;

  if (on_ground) physic.set_velocity_x(0);

  movement = physic.get_movement(elapsed_time);
}

void Rock::grab	(	MovingObject &	object,
		const Vector &	pos,
		Direction	dir
	)			[virtual]

called each frame when the object has been grabbed.

Implements Portable.

Reimplemented in Lantern, and Trampoline.

Definition at line 116 of file rock.cpp.

References COLGROUP_TOUCHABLE, MovingObject::get_pos(), grabbed, last_movement, MovingObject::movement, on_ground, and MovingObject::set_group().

Referenced by Trampoline::grab(), and Lantern::grab().

{
  movement = pos - get_pos();
  last_movement = movement;
  set_group(COLGROUP_TOUCHABLE); //needed for lanterns catching willowisps
  on_ground = false;
  grabbed = true;
}

void Rock::ungrab	(	MovingObject &	object,
		Direction	dir
	)			[virtual]

Reimplemented from Portable.

Reimplemented in Lantern, and Trampoline.

Definition at line 126 of file rock.cpp.

References COLGROUP_MOVING_STATIC, grabbed, last_movement, Vector::norm(), on_ground, physic, RIGHT, MovingObject::set_group(), Physic::set_velocity(), and UP.

Referenced by Trampoline::ungrab(), and Lantern::ungrab().

{
  set_group(COLGROUP_MOVING_STATIC);
  on_ground = false;
  if(dir == UP) {
    physic.set_velocity(0, -500);
  } else if (last_movement.norm() > 1) {
    physic.set_velocity((dir == RIGHT) ? 200 : -200, -200);
  } else {
    physic.set_velocity(0, 0);
  }
  grabbed = false;
}

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Member Data Documentation

Physic Rock::physic [protected]

Definition at line 42 of file rock.hpp.

Referenced by collision(), collision_solid(), ungrab(), and update().

bool Rock::on_ground [protected]

Definition at line 43 of file rock.hpp.

Referenced by Trampoline::collision(), collision(), collision_solid(), grab(), Rock(), ungrab(), and update().

bool Rock::grabbed [protected]

Definition at line 44 of file rock.hpp.

Referenced by collision(), collision_solid(), grab(), Lantern::is_open(), Rock(), ungrab(), and update().

Vector Rock::last_movement [protected]

Definition at line 45 of file rock.hpp.

Referenced by grab(), and ungrab().

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The documentation for this class was generated from the following files:

• src/object/rock.hpp
• src/object/rock.cpp

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