X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fobject%2Fbackground.cpp;h=7b0d75f00164b8a7bf85be1acec26f2c4acfe45a;hb=4a3592f77f9c089c33b9eaf2db426999a01b2b78;hp=2d6cc412184dbdd9facfeca3c46a39d44a3f96bb;hpb=6f801c22d97251799740317fb1d0caf2e744b321;p=supertux.git diff --git a/src/object/background.cpp b/src/object/background.cpp index 2d6cc4121..7b0d75f00 100644 --- a/src/object/background.cpp +++ b/src/object/background.cpp @@ -1,12 +1,10 @@ -// $Id$ +// SuperTux +// Copyright (C) 2006 Matthias Braun // -// SuperTux - A Jump'n Run -// Copyright (C) 2004 Matthias Braun . + +#include "object/background.hpp" -#include +#include +#include +#include -#include "background.h" -#include "app/globals.h" -#include "camera.h" -#include "video/drawing_context.h" -#include "utils/lispwriter.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(LispReader& 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.read_int("layer", layer); - if(reader.read_string("image", imagefile) - && reader.read_float("speed", speed)) { - set_image(imagefile, speed); + // 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; + } + } + + 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; } - std::vector bkgd_top_color, bkgd_bottom_color; - if(reader.read_int_vector("top_color", bkgd_top_color) && - reader.read_int_vector("bottom_color", bkgd_bottom_color)) - set_gradient(Color(bkgd_top_color), Color(bkgd_bottom_color)); + 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); + } } Background::~Background() { - delete image; } void -Background::write(LispWriter& writer) +Background::update(float delta) { - 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 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"); + scroll_offset += scroll_speed * delta; } void -Background::action(float) +Background::set_image(const std::string& name_, float speed_) { + this->imagefile = name_; + this->speed = speed_; + + image = Surface::create(name_); } void -Background::set_image(const std::string& name, float speed) +Background::draw_image(DrawingContext& context, const Vector& pos_) { - this->type = IMAGE; - this->imagefile = name; - this->speed = speed; + 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(); - delete image; - image = new Surface(datadir + "/images/background/" + name, false); -} + int start_x = static_cast(floorf((cliprect.get_left() - (pos_.x - image->get_width() /2.0f)) / image->get_width())); + int end_x = static_cast(ceilf((cliprect.get_right() - (pos_.x + image->get_width() /2.0f)) / image->get_width()))+1; + int start_y = static_cast(floorf((cliprect.get_top() - (pos_.y - image->get_height()/2.0f)) / image->get_height())); + int end_y = static_cast(ceilf((cliprect.get_bottom() - (pos_.y + image->get_height()/2.0f)) / image->get_height()))+1; -void -Background::set_gradient(Color top, Color bottom) -{ - type = GRADIENT; - gradient_top = top; - gradient_bottom = bottom; + 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; + + 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; - delete image; - image = new Surface(top, bottom, screen->w, screen->h); + 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->w; x += image->w) - for(int y = sy; y < screen->h; 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)); } +/* EOF */