296 lines
13 KiB
C++
296 lines
13 KiB
C++
/* BSD 3-Clause License
|
|
*
|
|
* Copyright © 2008-2022, Jice and the libtcod contributors.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the copyright holder nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
#ifndef LIBTCOD_CONTEXT_HPP_
|
|
#define LIBTCOD_CONTEXT_HPP_
|
|
#include <array>
|
|
#include <filesystem>
|
|
#include <stdexcept>
|
|
|
|
#include "config.h"
|
|
#include "console.h"
|
|
#include "context.h"
|
|
#include "context_init.h"
|
|
#include "context_viewport.h"
|
|
#include "error.hpp"
|
|
#include "tileset.hpp"
|
|
|
|
namespace tcod {
|
|
/***************************************************************************
|
|
@brief A C++ managed tcod context.
|
|
|
|
@details
|
|
\rst
|
|
See :ref:`getting-started` for complete examples of how to setup libtcod projects.
|
|
\endrst
|
|
|
|
@code{.cpp}
|
|
// The absolute minimum needed to create a new context in C++.
|
|
int main(int argc, char* argv[]) {
|
|
auto params = TCOD_ContextParams{};
|
|
params.tcod_version = TCOD_COMPILEDVERSION;
|
|
auto context = tcod::Context(params);
|
|
}
|
|
@endcode
|
|
|
|
\rst
|
|
.. versionadded:: 1.21
|
|
\endrst
|
|
*/
|
|
class Context {
|
|
public:
|
|
Context() = default;
|
|
/***************************************************************************
|
|
@brief Construct a new Context object using the provided parameters.
|
|
|
|
Requires SDL support enabled, otherwise this will throw.
|
|
*/
|
|
explicit Context(const TCOD_ContextParams& params) {
|
|
#ifndef NO_SDL
|
|
struct TCOD_Context* context = nullptr;
|
|
check_throw_error(TCOD_context_new(¶ms, &context));
|
|
context_ = ContextPtr{context};
|
|
#else
|
|
throw std::logic_error("Libtcod not compiled with SDL support, so it can not create its own context.");
|
|
#endif // NO_SDL
|
|
};
|
|
/// Take ownsership of a smart pointer to TCOD_Context.
|
|
explicit Context(ContextPtr&& ptr) : context_{std::move(ptr)} {}
|
|
/// Take ownsership of a raw TCOD_Context pointer.
|
|
explicit Context(TCOD_Context* ptr) : context_{ptr} {}
|
|
|
|
// Copy disabled, move allowed.
|
|
Context(const Context&) = delete;
|
|
Context& operator=(const Context&) = delete;
|
|
Context(Context&&) = default;
|
|
Context& operator=(Context&&) = default;
|
|
|
|
/***************************************************************************
|
|
@brief Return the TCOD_renderer_t value of this context which may be different than the one requested.
|
|
*/
|
|
[[nodiscard]] auto get_renderer_type() noexcept -> TCOD_renderer_t {
|
|
return static_cast<TCOD_renderer_t>(TCOD_context_get_renderer_type(context_.get()));
|
|
}
|
|
/***************************************************************************
|
|
@brief Present a console to the display with the provided viewport options.
|
|
|
|
@param console The TCOD_Console to render. This console can be any size.
|
|
@param viewport The viewport options, which can change the way the console is scaled.
|
|
|
|
@details
|
|
@code{.cpp}
|
|
// tcod::Context context;
|
|
while (1) {
|
|
auto console = context.new_console(); // This can be done as an alternative to clearing the console.
|
|
tcod::print(console, {0, 0}, "Hello world", nullptr, nullptr);
|
|
auto viewport_options = TCOD_ViewportOptions{}
|
|
viewport_options.tcod_version = TCOD_COMPILEDVERSION;
|
|
viewport_options.keep_aspect = true; // Adds letterboxing to keep aspect.
|
|
viewport_options.integer_scaling = true; // Prevent scaling artifacts with pixelated or low-res glyphs.
|
|
viewport_options.clear_color = {0, 0, 0, 255};
|
|
viewport_options.align_x = 0.5f;
|
|
viewport_options.align_y = 0.5f;
|
|
context.present(console, viewport_options);
|
|
SDL_Event event;
|
|
while (SDL_PollEvent(&event)) {
|
|
if (event.type == SDL_QUIT) std::exit(EXIT_SUCCESS);
|
|
}
|
|
}
|
|
@endcode
|
|
*/
|
|
void present(const TCOD_Console& console, const TCOD_ViewportOptions& viewport) {
|
|
tcod::check_throw_error(TCOD_context_present(context_.get(), &console, &viewport));
|
|
}
|
|
/***************************************************************************
|
|
@brief Present a console to the display.
|
|
|
|
@param console The TCOD_Console to render. This console can be any size and will be stretched to fit the window.
|
|
*/
|
|
void present(const TCOD_Console& console) {
|
|
tcod::check_throw_error(TCOD_context_present(context_.get(), &console, nullptr));
|
|
}
|
|
/***************************************************************************
|
|
@brief Return a non-owning pointer to the SDL_Window used by this context.
|
|
|
|
@return A ``struct SDL_Window*`` pointer. This will be nullptr if this context does not use an SDL window.
|
|
|
|
@details
|
|
@code{.cpp}
|
|
// tcod::Context context;
|
|
if (SDL_Window* sdl_window = context.get_sdl_window(); sdl_window) {
|
|
// Do anything with an SDL window, for example:
|
|
uint32_t flags = SDL_GetWindowFlags(sdl_window);
|
|
}
|
|
@endcode
|
|
*/
|
|
[[nodiscard]] auto get_sdl_window() noexcept -> struct SDL_Window* {
|
|
return TCOD_context_get_sdl_window(context_.get());
|
|
}
|
|
/***************************************************************************
|
|
@brief Return a non-owning pointer to the SDL_Renderer used by this context.
|
|
|
|
@return A ``struct SDL_Renderer*`` pointer. This will be nullptr if this context does not use SDL's renderer.
|
|
|
|
@details
|
|
@code{.cpp}
|
|
// tcod::Context context;
|
|
if (SDL_Renderer* sdl_renderer = context.get_sdl_renderer(); sdl_renderer) {
|
|
// Do anything with an SDL renderer, for example:
|
|
SDL_SetRenderDrawColor(sdl_renderer, 0, 0, 0, 255);
|
|
SDL_RenderClear(sdl_renderer);
|
|
SDL_RenderPresent(sdl_renderer);
|
|
}
|
|
@endcode
|
|
*/
|
|
[[nodiscard]] auto get_sdl_renderer() noexcept -> struct SDL_Renderer* {
|
|
return TCOD_context_get_sdl_renderer(context_.get());
|
|
}
|
|
/***************************************************************************
|
|
@brief Convert pixel coordinates to this contexts integer tile coordinates.
|
|
*/
|
|
[[nodiscard]] auto pixel_to_tile_coordinates(const std::array<int, 2>& xy) -> std::array<int, 2> {
|
|
std::array<int, 2> out{xy[0], xy[1]};
|
|
tcod::check_throw_error(TCOD_context_screen_pixel_to_tile_i(context_.get(), &out[0], &out[1]));
|
|
return out;
|
|
}
|
|
/***************************************************************************
|
|
@brief Convert pixel coordinates to this contexts sub-tile coordinates.
|
|
*/
|
|
[[nodiscard]] auto pixel_to_tile_coordinates(const std::array<double, 2>& xy) -> std::array<double, 2> {
|
|
std::array<double, 2> out{xy[0], xy[1]};
|
|
tcod::check_throw_error(TCOD_context_screen_pixel_to_tile_d(context_.get(), &out[0], &out[1]));
|
|
return out;
|
|
}
|
|
/***************************************************************************
|
|
@brief Convert the pixel coordinates of SDL mouse events to the tile coordinates of the current context.
|
|
|
|
@param event Any SDL_Event event.
|
|
If the event type is compatible then its coordinates will be converted into tile coordinates.
|
|
|
|
@details
|
|
@code{.cpp}
|
|
// tcod::Context context;
|
|
while (1) {
|
|
SDL_Event event;
|
|
while (SDL_PollEvent(&event)) {
|
|
SDL_Event event_tile = event; // A copy of `event` using tile coordinates.
|
|
context.convert_event_coordinates(event_tile);
|
|
switch (event.type) {
|
|
case SDL_QUIT:
|
|
std::exit(EXIT_SUCCESS);
|
|
case SDL_MOUSEMOTION:
|
|
event.motion.xrel; // Relative motion in pixels.
|
|
event_tile.motion.xrel; // Relative motion in tiles.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
@endcode
|
|
\rst
|
|
.. versionadded:: 1.19
|
|
\endrst
|
|
*/
|
|
void convert_event_coordinates(SDL_Event& event) {
|
|
tcod::check_throw_error(TCOD_context_convert_event_coordinates(context_.get(), &event));
|
|
}
|
|
/***************************************************************************
|
|
@brief Save a screenshot to `path`.
|
|
|
|
@param path The file path to save the screenshot to.
|
|
*/
|
|
void save_screenshot(const std::filesystem::path& path) {
|
|
tcod::check_throw_error(TCOD_context_save_screenshot(context_.get(), path.string().c_str()));
|
|
}
|
|
/***************************************************************************
|
|
@brief Save a screenshot with a unique filename in the working directly.
|
|
*/
|
|
void save_screenshot() { tcod::check_throw_error(TCOD_context_save_screenshot(context_.get(), nullptr)); }
|
|
/***************************************************************************
|
|
@brief Return a new console with a size automatically determined by the context.
|
|
|
|
@param min_columns The minimum width to use for the new console, in tiles.
|
|
@param min_rows The minimum height to use for the new console, in tiles.
|
|
@param magnification Determines the apparent size of the tiles that will be rendered by a console created with
|
|
the output values.
|
|
A `magnification` larger then 1.0f will output smaller console parameters, which will show as larger tiles when
|
|
presented.
|
|
Only values larger than zero are allowed.
|
|
@return Returns a tcod::Console of a dynamic size.
|
|
|
|
@details
|
|
@code{.cpp}
|
|
// tcod::Context context;
|
|
while (1) {
|
|
auto console = context.new_console(); // Can be an alternative to clearing the console.
|
|
tcod::print(console, {0, 0}, "Hello world", std::nullopt, std::nullopt);
|
|
context.present(console);
|
|
SDL_Event event;
|
|
while (SDL_PollEvent(&event)) { // SDL_PollEvent may resize the window.
|
|
if (event.type == SDL_QUIT) std::exit(EXIT_SUCCESS);
|
|
}
|
|
}
|
|
@endcode
|
|
*/
|
|
[[nodiscard]] auto new_console(int min_columns = 1, int min_rows = 1, float magnification = 1.0f) -> tcod::Console {
|
|
int columns;
|
|
int rows;
|
|
if (magnification <= 0.0f) {
|
|
throw std::invalid_argument(
|
|
std::string("Magnification must be greater than zero. Got ") + std::to_string(magnification));
|
|
}
|
|
tcod::check_throw_error(TCOD_context_recommended_console_size(context_.get(), magnification, &columns, &rows));
|
|
return tcod::Console{std::max(columns, min_columns), std::max(rows, min_rows)};
|
|
}
|
|
/***************************************************************************
|
|
@brief Replace this contexts tileset with a different one.
|
|
*/
|
|
auto change_tileset(tcod::Tileset& new_tileset) -> void {
|
|
check_throw_error(TCOD_context_change_tileset(context_.get(), new_tileset.get()));
|
|
}
|
|
/***************************************************************************
|
|
@brief Access the context pointer. Modifying this pointer may make the class invalid.
|
|
*/
|
|
[[nodiscard]] auto get_ptr() noexcept -> ContextPtr& { return context_; }
|
|
/***************************************************************************
|
|
@brief Access the const context pointer.
|
|
*/
|
|
[[nodiscard]] auto get_ptr() const noexcept -> const ContextPtr& { return context_; }
|
|
/***************************************************************************
|
|
@brief Close and delete the objects managed by this context. This object will no longer be valid unless reset.
|
|
*/
|
|
auto close() -> void { *this = Context(); }
|
|
|
|
private:
|
|
ContextPtr context_ = nullptr;
|
|
};
|
|
} // namespace tcod
|
|
#endif // LIBTCOD_CONTEXT_HPP_
|