/**
* \brief Draws the foreground of the map.
*/
void Map::draw_foreground() {
const int screen_width = visible_surface->get_width();
const int screen_height = visible_surface->get_height();
// If the map is too small for the screen, add black bars outside the map.
// TODO make the same optimization as for the background (avoid fill_with_color)
const int map_width = get_width();
if (map_width < screen_width) {
int bar_width = (screen_width - map_width) / 2;
Rectangle dst_position(0, 0, bar_width, screen_height);
visible_surface->fill_with_color(Color::get_black(), dst_position);
dst_position.set_x(bar_width + map_width);
visible_surface->fill_with_color(Color::get_black(), dst_position);
}
const int map_height = get_height();
if (map_height < screen_height) {
int bar_height = (screen_height - map_height) / 2;
Rectangle dst_position(0, 0, screen_width, bar_height);
visible_surface->fill_with_color(Color::get_black(), dst_position);
dst_position.set_y(bar_height + map_height);
visible_surface->fill_with_color(Color::get_black(), dst_position);
}
}
/**
* \brief Draws the tile on the specified surface.
* \param dst_surface the destination surface
* \param viewport coordinates of the top-left corner of dst_surface
* relative to the map
*/
void Tile::draw(Surface& dst_surface, const Rectangle& viewport) {
Rectangle dst_position(get_top_left_x() - viewport.get_x(),
get_top_left_y() - viewport.get_y(),
get_width(), get_height());
tile_pattern->fill_surface(dst_surface, dst_position,
get_map().get_tileset(), viewport);
}
/**
* \brief Builds a surface with black bars when the map is smaller than the
* quest size.
*/
void Map::build_foreground_surface() {
RefCountable::unref(foreground_surface);
const int screen_width = visible_surface->get_width();
const int screen_height = visible_surface->get_height();
// If the map is too small for the screen, add black bars outside the map.
const int map_width = get_width();
const int map_height = get_height();
if (map_width >= screen_width
&& map_height >= screen_height) {
// Nothing to do.
return;
}
foreground_surface = Surface::create(visible_surface->get_size());
RefCountable::ref(foreground_surface);
// Keep this surface as software destination because it is built only once.
if (map_width < screen_width) {
int bar_width = (screen_width - map_width) / 2;
Rectangle dst_position(0, 0, bar_width, screen_height);
foreground_surface->fill_with_color(Color::get_black(), dst_position);
dst_position.set_x(bar_width + map_width);
foreground_surface->fill_with_color(Color::get_black(), dst_position);
}
if (map_height < screen_height) {
int bar_height = (screen_height - map_height) / 2;
Rectangle dst_position(0, 0, screen_width, bar_height);
foreground_surface->fill_with_color(Color::get_black(), dst_position);
dst_position.set_y(bar_height + map_height);
foreground_surface->fill_with_color(Color::get_black(), dst_position);
}
}
/**
* \brief Draws the tile on the map.
*/
void DynamicTile::draw_on_map() {
if (!is_drawn()) {
return;
}
const Rectangle& camera_position = get_map().get_camera_position();
Rectangle dst(0, 0);
Rectangle dst_position(get_top_left_x() - camera_position.get_x(),
get_top_left_y() - camera_position.get_y(),
get_width(), get_height());
tile_pattern.fill_surface(get_map().get_visible_surface(), dst_position,
get_map().get_tileset(), camera_position);
}
/**
* \brief Returns where the previous map should be blitted on
* both_maps_surface, for the specified scrolling direction.
* \param scrolling_direction The scrolling direction (0 to 3).
*/
Rectangle TransitionScrolling::get_previous_map_dst_position(
int scrolling_direction) {
const Size& quest_size = Video::get_quest_size();
Rectangle dst_position(0, 0);
if (scrolling_direction == 1) {
// Scroll to the north.
dst_position.set_y(quest_size.height);
}
else if (scrolling_direction == 2) {
// Scroll to the west.
dst_position.set_x(quest_size.width);
}
return dst_position;
}
/**
* \brief Draws the tile on the specified surface.
* \param dst_surface the destination surface
* \param viewport coordinates of the top-left corner of dst_surface
* relative to the map
*/
void Tile::draw(const SurfacePtr& dst_surface, const Point& viewport) {
Rectangle dst_position(
get_top_left_x() - viewport.x,
get_top_left_y() - viewport.y,
get_width(),
get_height()
);
tile_pattern.fill_surface(
dst_surface,
dst_position,
get_map().get_tileset(),
viewport
);
}
/**
* \brief Implementation of drawable:draw_region().
* \param l the Lua context that is calling this function
* \return number of values to return to Lua
*/
int LuaContext::drawable_api_draw_region(lua_State* l) {
Drawable& drawable = check_drawable(l, 1);
Rectangle region(
luaL_checkint(l, 2),
luaL_checkint(l, 3),
luaL_checkint(l, 4),
luaL_checkint(l, 5)
);
Surface& dst_surface = check_surface(l, 6);
Rectangle dst_position(
luaL_optint(l, 7, 0),
luaL_optint(l, 8, 0)
);
drawable.draw_region(region, dst_surface, dst_position);
return 0;
}
/**
* \brief Draws the tile on the map.
*/
void DynamicTile::draw_on_map() {
const CameraPtr& camera = get_map().get_camera();
if (camera == nullptr) {
return;
}
const Rectangle& camera_position = camera->get_bounding_box();
Rectangle dst_position(get_top_left_x() - camera_position.get_x(),
get_top_left_y() - camera_position.get_y(),
get_width(), get_height());
tile_pattern.fill_surface(
get_map().get_camera_surface(),
dst_position,
get_map().get_tileset(),
camera_position.get_xy()
);
}
/**
* \brief Redraws the text surface in the case of a bitmap font.
*
* This function is called when there is a change.
*/
void TextSurface::rebuild_bitmap() {
// First count the number of characters in the UTF-8 string.
int num_chars = 0;
for (unsigned i = 0; i < text.size(); i++) {
char current_char = text[i];
if ((current_char & 0xE0) == 0xC0) {
// This character uses two bytes.
++i;
}
++num_chars;
}
// Determine the letter size from the surface size.
Surface& bitmap = *fonts[font_id].bitmap;
const Rectangle& bitmap_size = bitmap.get_size();
int char_width = bitmap_size.get_width() / 128;
int char_height = bitmap_size.get_height() / 16;
surface = new Surface(char_width * num_chars, char_height);
surface->set_transparency_color(bitmap.get_transparency_color());
// Traverse the string again to draw the characters.
Rectangle dst_position(0, 0);
for (unsigned i = 0; i < text.size(); i++) {
char first_byte = text[i];
Rectangle src_position(0, 0, char_width, char_height);
if ((first_byte & 0xE0) != 0xC0) {
// This character uses one byte.
src_position.set_xy(first_byte * char_width, 0);
}
else {
// This character uses two bytes.
++i;
char second_byte = text[i];
uint16_t code_point = ((first_byte & 0x1F) << 6) | (second_byte & 0x3F);
src_position.set_xy((code_point % 128) * char_width,
(code_point / 128) * char_height);
}
bitmap.draw_region(src_position, *surface, dst_position);
dst_position.add_x(char_width - 1);
}
}
