InfoBlock Class Reference

#include <infoblock.hpp>

Inherits Block.

List of all members.

Public Member Functions
	InfoBlock (const Reader &lisp)
virtual	~InfoBlock ()
void	update (float elapsed_time)
	This function is called once per frame and allows the object to update it's state.
void	draw (DrawingContext &context)
	The GameObject should draw itself onto the provided DrawingContext if this function is called.
void	show_message ()
void	hide_message ()
Protected Member Functions
virtual void	hit (Player &player)
Player *	get_nearest_player ()
Protected Attributes
std::string	message
float	shown_pct
	Value in the range of 0.
float	dest_pct
	With each call to update(), shown_pct will slowly transition to this value.
std::vector< InfoBoxLine * >	lines
	lines of text (or images) to display
float	lines_height

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Detailed Description

Definition at line 23 of file infoblock.hpp.

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Constructor & Destructor Documentation

InfoBlock::InfoBlock

(

const Reader &

lisp

)

Definition at line 35 of file infoblock.cpp.

References MovingObject::bbox, lisp::Lisp::get(), lines, lines_height, log_warning, message, Rectf::set_pos(), InfoBoxLine::split(), Vector::x, and Vector::y.

                                       :
  Block(sprite_manager->create("images/objects/bonus_block/infoblock.sprite")), 
  message(),
  shown_pct(0), 
  dest_pct(0),
  lines(),
  lines_height()
{
  Vector pos;
  lisp.get("x", pos.x);
  lisp.get("y", pos.y);
  bbox.set_pos(pos);

  if(!lisp.get("message", message)) {
    log_warning << "No message in InfoBlock" << std::endl;
  }
  //stopped = false;
  //ringing = new AmbientSound(get_pos(), 0.5, 300, 1, "sounds/phone.wav");
  //Sector::current()->add_object(ringing);

  // Split text string lines into a vector
  lines = InfoBoxLine::split(message, 400);
  lines_height = 0;
  for(size_t i = 0; i < lines.size(); ++i) lines_height+=lines[i]->get_height();
}

InfoBlock::~InfoBlock

(

)

[virtual]

Definition at line 61 of file infoblock.cpp.

References lines.

{
  for(std::vector<InfoBoxLine*>::iterator i = lines.begin(); i != lines.end(); i++) {
    delete *i;
  }
}

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Member Function Documentation

void InfoBlock::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 Block.

Definition at line 112 of file infoblock.cpp.

References dest_pct, MovingObject::get_bbox(), get_nearest_player(), MovingObject::get_pos(), Vector::norm(), Rectf::p1, Rectf::p2, shown_pct, Block::update(), and Vector::y.

{
  Block::update(delta);

  if (delta == 0) return;

  // hide message if player is too far away or above infoblock
  if (dest_pct > 0) {
    Player* player = get_nearest_player();
    if (player) {
      Vector p1 = this->get_pos() + (this->get_bbox().p2 - this->get_bbox().p1) / 2;
      Vector p2 = player->get_pos() + (player->get_bbox().p2 - player->get_bbox().p1) / 2;
      Vector dist = (p2 - p1);
      float d = dist.norm();
      if (d > 128 || dist.y < 0) dest_pct = 0;
    }
  }

  // handle soft fade-in and fade-out
  if (shown_pct != dest_pct) {
    if (dest_pct > shown_pct) shown_pct = std::min(shown_pct + 2*delta, dest_pct);
    if (dest_pct < shown_pct) shown_pct = std::max(shown_pct - 2*delta, dest_pct);
  }
}

void InfoBlock::draw

(

DrawingContext &

context

)

[virtual]

The GameObject should draw itself onto the provided DrawingContext if this function is called.

Reimplemented from Block.

Definition at line 138 of file infoblock.cpp.

References Sector::current(), Block::draw(), DrawingContext::draw_filled_rect(), MovingObject::get_bbox(), Sector::get_width(), LAYER_GUI, lines, lines_height, Block::original_y, Rectf::p1, Rectf::p2, DrawingContext::pop_transform(), DrawingContext::push_transform(), DrawingContext::set_alpha(), shown_pct, and Vector::x.

{
  Block::draw(context);

  if (shown_pct <= 0) return;

  context.push_transform();
  //context.set_translation(Vector(0, 0));
  context.set_alpha(shown_pct);

  //float x1 = SCREEN_WIDTH/2-200;
  //float y1 = SCREEN_HEIGHT/2-200;
  float border = 8;
  float width = 400; // this is the text width only
  float height = lines_height; // this is the text height only
  float x1 = (get_bbox().p1.x + get_bbox().p2.x)/2 - width/2;
  float x2 = (get_bbox().p1.x + get_bbox().p2.x)/2 + width/2;
  float y1 = original_y - height;

  if(x1 < 0) {
    x1 = 0;
    x2 = width;
  }

  if(x2 > Sector::current()->get_width()) {
    x2 = Sector::current()->get_width();
    x1 = x2 - width;
  }

  // lines_height includes one ITEMS_SPACE too much, so the bottom border is reduced by 4px
  context.draw_filled_rect(Vector(x1-border, y1-border), Vector(width+2*border, height+2*border-4), Color(0.6f, 0.7f, 0.8f, 0.5f), LAYER_GUI-50);

  float y = y1;
  for(size_t i = 0; i < lines.size(); ++i) {
    if(y >= y1 + height) {
      //log_warning << "Too many lines of text in InfoBlock" << std::endl;
      //dest_pct = 0;
      //shown_pct = 0;
      break;
    }

    lines[i]->draw(context, Rectf(x1, y, x2, y), LAYER_GUI-50+1);
    y += lines[i]->get_height();
  }

  context.pop_transform();
}

void InfoBlock::show_message

(

)

Definition at line 187 of file infoblock.cpp.

References dest_pct.

Referenced by hit().

{
  dest_pct = 1;
}

void InfoBlock::hide_message

(

)

Definition at line 193 of file infoblock.cpp.

References dest_pct.

Referenced by hit().

{
  dest_pct = 0;
}

void InfoBlock::hit

(

Player &

player

)

[protected, virtual]

Implements Block.

Definition at line 69 of file infoblock.cpp.

References Sector::current(), dest_pct, Sector::gameobjects, hide_message(), show_message(), and Block::start_bounce().

{
  start_bounce(&player);

  //if (!stopped) {
  //  ringing->remove_me();
  //  stopped = true;
  //}

  if (dest_pct != 1) {

    // first hide all other InfoBlocks' messages in same sector
    Sector* parent = Sector::current();
    if (!parent) return;
    for (Sector::GameObjects::iterator i = parent->gameobjects.begin(); i != parent->gameobjects.end(); i++) {
      InfoBlock* block = dynamic_cast<InfoBlock*>(*i);
      if (!block) continue;
      if (block != this) block->hide_message();
    }

    // show our message
    show_message();

  } else {
    hide_message();
  }
}

Player * InfoBlock::get_nearest_player

(

)

[protected]

Definition at line 98 of file infoblock.cpp.

References Sector::current(), and Sector::get_players().

Referenced by update().

{
  // FIXME: does not really return nearest player

  std::vector<Player*> players = Sector::current()->get_players();
  for (std::vector<Player*>::iterator playerIter = players.begin(); playerIter != players.end(); ++playerIter) {
    Player* player = *playerIter;
    return player;
  }

  return 0;
}

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Member Data Documentation

std::string InfoBlock::message [protected]

Definition at line 39 of file infoblock.hpp.

Referenced by InfoBlock().

float InfoBlock::shown_pct [protected]

Value in the range of 0.

.1, depending on how much of the infobox is currently shown

Definition at line 42 of file infoblock.hpp.

Referenced by draw(), and update().

float InfoBlock::dest_pct [protected]

With each call to update(), shown_pct will slowly transition to this value.

Definition at line 43 of file infoblock.hpp.

Referenced by hide_message(), hit(), show_message(), and update().

std::vector<InfoBoxLine*> InfoBlock::lines [protected]

lines of text (or images) to display

Definition at line 44 of file infoblock.hpp.

Referenced by draw(), InfoBlock(), and ~InfoBlock().

float InfoBlock::lines_height [protected]

Definition at line 45 of file infoblock.hpp.

Referenced by draw(), and InfoBlock().

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

• src/object/infoblock.hpp
• src/object/infoblock.cpp

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