-// $Id$
+// SuperTux
+// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
//
-// SuperTux - A Jump'n Run
-// Copyright (C) 2004 Matthias Braun <matze@braunis.de
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License
-// as published by the Free Software Foundation; either version 2
-// of the License, or (at your option) any later version.
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+#include "object/background.hpp"
-#include <config.h>
+#include <iostream>
+#include <math.h>
+#include <stdexcept>
-#include "background.h"
-#include "app/globals.h"
-#include "camera.h"
-#include "video/drawing_context.h"
-#include "lisp/lisp.h"
-#include "lisp/writer.h"
-#include "object_factory.h"
+#include "math/sizef.hpp"
+#include "supertux/globals.hpp"
+#include "supertux/object_factory.hpp"
+#include "supertux/sector.hpp"
+#include "util/log.hpp"
+#include "util/reader.hpp"
-Background::Background()
- : type(INVALID), layer(LAYER_BACKGROUND0), image(0)
+Background::Background() :
+ alignment(NO_ALIGNMENT),
+ layer(LAYER_BACKGROUND0),
+ imagefile_top(),
+ imagefile(),
+ imagefile_bottom(),
+ pos(),
+ speed(),
+ speed_y(),
+ scroll_speed(),
+ scroll_offset(),
+ image_top(),
+ image(),
+ image_bottom()
{
}
-Background::Background(const lisp::Lisp& reader)
- : type(INVALID), layer(LAYER_BACKGROUND0), image(0)
+Background::Background(const Reader& reader) :
+ alignment(NO_ALIGNMENT),
+ layer(LAYER_BACKGROUND0),
+ imagefile_top(),
+ imagefile(),
+ imagefile_bottom(),
+ pos(),
+ speed(),
+ speed_y(),
+ scroll_speed(),
+ scroll_offset(),
+ image_top(),
+ image(),
+ image_bottom()
{
- reader.get("layer", layer);
- if(reader.get("image", imagefile)
- && reader.get("speed", speed)) {
- set_image(imagefile, speed);
- } else {
- std::vector <unsigned int> bkgd_top_color, bkgd_bottom_color;
- if(reader.get_vector("top_color", bkgd_top_color) &&
- reader.get_vector("bottom_color", bkgd_bottom_color))
- set_gradient(Color(bkgd_top_color), Color(bkgd_bottom_color));
+ // read position, defaults to (0,0)
+ float px = 0;
+ float py = 0;
+ reader.get("x", px);
+ reader.get("y", py);
+ this->pos = Vector(px,py);
+
+ speed = 1.0;
+ speed_y = 1.0;
+
+ std::string alignment_str;
+ if (reader.get("alignment", alignment_str))
+ {
+ if (alignment_str == "left")
+ {
+ alignment = LEFT_ALIGNMENT;
+ }
+ else if (alignment_str == "right")
+ {
+ alignment = RIGHT_ALIGNMENT;
+ }
+ else if (alignment_str == "top")
+ {
+ alignment = TOP_ALIGNMENT;
+ }
+ else if (alignment_str == "bottom")
+ {
+ alignment = BOTTOM_ALIGNMENT;
+ }
+ else if (alignment_str == "none")
+ {
+ alignment = NO_ALIGNMENT;
+ }
+ else
+ {
+ log_warning << "Background: invalid alignment: '" << alignment_str << "'" << std::endl;
+ alignment = NO_ALIGNMENT;
+ }
}
-}
-Background::~Background()
-{
- delete image;
+ reader.get("scroll-offset-x", scroll_offset.x);
+ reader.get("scroll-offset-y", scroll_offset.y);
+
+ reader.get("scroll-speed-x", scroll_speed.x);
+ reader.get("scroll-speed-y", scroll_speed.y);
+
+ layer = reader_get_layer (reader, /* default = */ LAYER_BACKGROUND0);
+
+ if(!reader.get("image", imagefile) || !reader.get("speed", speed))
+ throw std::runtime_error("Must specify image and speed for background");
+
+ set_image(imagefile, speed);
+ if (!reader.get("speed-y", speed_y))
+ {
+ speed_y = speed;
+ }
+
+ if (reader.get("image-top", imagefile_top)) {
+ image_top = Surface::create(imagefile_top);
+ }
+ if (reader.get("image-bottom", imagefile_bottom)) {
+ image_bottom = Surface::create(imagefile_bottom);
+ }
}
-void
-Background::write(lisp::Writer& writer)
+Background::~Background()
{
- if(type == INVALID)
- return;
-
- writer.start_list("background");
-
- if(type == IMAGE) {
- writer.write_string("image", imagefile);
- writer.write_float("speed", speed);
- } else if(type == GRADIENT) {
- std::vector <unsigned int> bkgd_top_color, bkgd_bottom_color;
- bkgd_top_color.push_back(gradient_top.red);
- bkgd_top_color.push_back(gradient_top.green);
- bkgd_top_color.push_back(gradient_top.blue);
- bkgd_bottom_color.push_back(gradient_top.red);
- bkgd_bottom_color.push_back(gradient_top.green);
- bkgd_bottom_color.push_back(gradient_top.blue);
- writer.write_int_vector("top_color", bkgd_top_color);
- writer.write_int_vector("bottom_color", bkgd_bottom_color);
- }
- writer.write_int("layer", layer);
-
- writer.end_list("background");
}
void
-Background::action(float)
+Background::update(float delta)
{
+ scroll_offset += scroll_speed * delta;
}
void
Background::set_image(const std::string& name, float speed)
{
- this->type = IMAGE;
this->imagefile = name;
this->speed = speed;
- delete image;
- image = new Surface(datadir + "/images/background/" + name, false);
+ image = Surface::create(name);
}
void
-Background::set_gradient(Color top, Color bottom)
+Background::draw_image(DrawingContext& context, const Vector& pos)
{
- type = GRADIENT;
- gradient_top = top;
- gradient_bottom = bottom;
+ Sizef level(Sector::current()->get_width(), Sector::current()->get_height());
+ Sizef screen(SCREEN_WIDTH, SCREEN_HEIGHT);
+ Sizef parallax_image_size = (1.0f - speed) * screen + level * speed;
+ Rectf cliprect = context.get_cliprect();
+
+ int start_x = static_cast<int>(floorf((cliprect.get_left() - (pos.x - image->get_width() /2.0f)) / image->get_width()));
+ int end_x = static_cast<int>(ceilf((cliprect.get_right() - (pos.x + image->get_width() /2.0f)) / image->get_width()))+1;
+ int start_y = static_cast<int>(floorf((cliprect.get_top() - (pos.y - image->get_height()/2.0f)) / image->get_height()));
+ int end_y = static_cast<int>(ceilf((cliprect.get_bottom() - (pos.y + image->get_height()/2.0f)) / image->get_height()))+1;
+
+ switch(alignment)
+ {
+ case LEFT_ALIGNMENT:
+ for(int y = start_y; y < end_y; ++y)
+ {
+ Vector p(pos.x - parallax_image_size.width / 2.0f,
+ pos.y + y * image->get_height() - image->get_height() / 2.0f);
+ context.draw_surface(image, p, layer);
+ }
+ break;
+
+ case RIGHT_ALIGNMENT:
+ for(int y = start_y; y < end_y; ++y)
+ {
+ Vector p(pos.x + parallax_image_size.width / 2.0f - image->get_width(),
+ pos.y + y * image->get_height() - image->get_height() / 2.0f);
+ context.draw_surface(image, p, layer);
+ }
+ break;
+
+ case TOP_ALIGNMENT:
+ for(int x = start_x; x < end_x; ++x)
+ {
+ Vector p(pos.x + x * image->get_width() - image->get_width() / 2.0f,
+ pos.y - parallax_image_size.height / 2.0f);
+ context.draw_surface(image, p, layer);
+ }
+ break;
- delete image;
- image = new Surface(top, bottom, SCREEN_WIDTH, SCREEN_HEIGHT);
+ case BOTTOM_ALIGNMENT:
+ for(int x = start_x; x < end_x; ++x)
+ {
+ Vector p(pos.x + x * image->get_width() - image->get_width() / 2.0f,
+ pos.y - image->get_height() + parallax_image_size.height / 2.0f);
+ context.draw_surface(image, p, layer);
+ }
+ break;
+
+ case NO_ALIGNMENT:
+ for(int y = start_y; y < end_y; ++y)
+ for(int x = start_x; x < end_x; ++x)
+ {
+ Vector p(pos.x + x * image->get_width() - image->get_width()/2,
+ pos.y + y * image->get_height() - image->get_height()/2);
+
+ if (image_top.get() != NULL && (y < 0))
+ {
+ context.draw_surface(image_top, p, layer);
+ }
+ else if (image_bottom.get() != NULL && (y > 0))
+ {
+ context.draw_surface(image_bottom, p, layer);
+ }
+ else
+ {
+ context.draw_surface(image, p, layer);
+ }
+ }
+ break;
+ }
}
void
Background::draw(DrawingContext& context)
{
- if(type == GRADIENT) {
- context.push_transform();
- context.set_translation(Vector(0, 0));
- context.draw_surface(image, Vector(0, 0), layer);
- context.pop_transform();
- } else if(type == IMAGE) {
- if(!image)
- return;
-
- int sx = int(-context.get_translation().x * speed) % image->w - image->w;
- int sy = int(-context.get_translation().y * speed) % image->h - image->h;
- context.push_transform();
- context.set_translation(Vector(0, 0));
- for(int x = sx; x < SCREEN_WIDTH; x += image->w)
- for(int y = sy; y < SCREEN_HEIGHT; y += image->h)
- context.draw_surface(image, Vector(x, y), layer);
- context.pop_transform();
- }
+ if(image.get() == NULL)
+ return;
+
+ Sizef level_size(Sector::current()->get_width(),
+ Sector::current()->get_height());
+ Sizef screen(SCREEN_WIDTH, SCREEN_HEIGHT);
+ Sizef translation_range = level_size - screen;
+ Vector center_offset(context.get_translation().x - translation_range.width / 2.0f,
+ context.get_translation().y - translation_range.height / 2.0f);
+
+ // FIXME: We are not handling 'pos'
+ draw_image(context, Vector(level_size.width / 2.0f, level_size.height / 2.0f) + center_offset * (1.0f - speed));
}
-IMPLEMENT_FACTORY(Background, "background");
+/* EOF */
projects / supertux.git / blobdiff