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#include "tile-atlas.hpp"
#include "loader.hpp"
#include "shaders/tile-shader.hpp"
#include "tile.hpp"
#include "chunk.hpp"
#include "floor-mesh.hpp"
#include "wall-mesh.hpp"
#include <bitset>
#include <Magnum/Magnum.h>
#include <Magnum/Math/Vector.h>
#include <Magnum/GL/DefaultFramebuffer.h>
#include <Magnum/GL/Renderer.h>
#include <Magnum/Platform/Sdl2Application.h>
#include <Magnum/Trade/AbstractImporter.h>
#include <Magnum/Timeline.h>
namespace Magnum::Examples {
template<typename enum_type>
struct enum_bitset : std::bitset<(std::size_t)enum_type::MAX> {
static_assert(std::is_same_v<std::size_t, std::common_type_t<std::size_t, std::underlying_type_t<enum_type>>>);
static_assert(std::is_same_v<enum_type, std::decay_t<enum_type>>);
using std::bitset<(std::size_t)enum_type::MAX>::bitset;
constexpr bool operator[](enum_type x) const { return operator[]((std::size_t)x); }
constexpr decltype(auto) operator[](enum_type x) {
return std::bitset<(std::size_t)enum_type::MAX>::operator[]((std::size_t)x);
}
};
struct app final : Platform::Application
{
using dpi_policy = Platform::Implementation::Sdl2DpiScalingPolicy;
using tile_atlas_ = std::shared_ptr<tile_atlas>;
explicit app(const Arguments& arguments);
virtual ~app();
void drawEvent() override;
void update(float dt);
void do_camera(float dt);
void reset_camera_offset();
void keyPressEvent(KeyEvent& event) override;
void keyReleaseEvent(KeyEvent& event) override;
void do_key(KeyEvent::Key k, KeyEvent::Modifiers m, bool pressed, bool repeated);
void draw_chunk(chunk& c);
void update_window_scale();
enum class key : int {
camera_up, camera_left, camera_right, camera_down, camera_reset,
quit,
MAX
};
chunk make_test_chunk();
tile_shader _shader;
tile_atlas_ floor1 = loader.tile_atlas("../share/game/images/metal1.tga", {2, 2});
tile_atlas_ floor2 = loader.tile_atlas("../share/game/images/floor1.tga", {4, 4});
tile_atlas_ wall1 = loader.tile_atlas("../share/game/images/wood2.tga", {2, 2});
tile_atlas_ wall2 = loader.tile_atlas("../share/game/images/wood1.tga", {2, 2});
chunk _chunk = make_test_chunk();
floor_mesh _floor_mesh;
wall_mesh _wall_mesh;
Vector2 camera_offset;
enum_bitset<key> keys;
Magnum::Timeline timeline;
};
using namespace Math::Literals;
chunk app::make_test_chunk()
{
constexpr auto N = TILE_MAX_DIM;
chunk c;
c.foreach_tile([&, this](tile& x, std::size_t k, local_coords pt) {
const auto& atlas = pt.x > N/2 && pt.y >= N/2 ? floor2 : floor1;
x.ground_image = { atlas, (std::uint8_t)(k % atlas->num_tiles().product()) };
});
constexpr auto K = N/2;
c[{K, K }].wall_north = { wall1, 0 };
c[{K, K }].wall_west = { wall2, 0 };
c[{K, K+1}].wall_north = { wall1, 0 };
c[{K+1, K }].wall_west = { wall2, 0 };
return c;
}
void app::update_window_scale()
{
auto sz = windowSize();
_shader.set_scale({ (float)sz[0], (float)sz[1] });
}
void app::draw_chunk(chunk& c)
{
_floor_mesh.draw(_shader, c);
_wall_mesh.draw(_shader, c);
}
app::app(const Arguments& arguments):
Platform::Application{
arguments,
Configuration{}
.setTitle("Test")
.setSize({1024, 768}, dpi_policy::Physical),
GLConfiguration{}
.setSampleCount(4)
}
{
reset_camera_offset();
timeline.start();
}
void app::drawEvent() {
#if 0
GL::defaultFramebuffer.clear(GL::FramebufferClear::Color | GL::FramebufferClear::Depth);
GL::Renderer::setDepthMask(true);
GL::Renderer::setDepthFunction(GL::Renderer::DepthFunction::LessOrEqual);
GL::Renderer::enable(GL::Renderer::Feature::DepthTest);
#else
GL::defaultFramebuffer.clear(GL::FramebufferClear::Color);
GL::Renderer::setDepthFunction(GL::Renderer::DepthFunction::Never);
#endif
update_window_scale();
{
float dt = timeline.previousFrameDuration();
update(dt);
}
draw_chunk(_chunk);
swapBuffers();
redraw();
timeline.nextFrame();
}
void app::do_camera(float dt)
{
constexpr float pixels_per_second = 512;
if (keys[key::camera_up])
camera_offset += Vector2(0, 1) * dt * pixels_per_second;
else if (keys[key::camera_down])
camera_offset += Vector2(0, -1) * dt * pixels_per_second;
if (keys[key::camera_left])
camera_offset += Vector2(1, 0) * dt * pixels_per_second;
else if (keys[key::camera_right])
camera_offset += Vector2(-1, 0) * dt * pixels_per_second;
_shader.set_camera_offset(camera_offset);
if (keys[key::camera_reset])
reset_camera_offset();
}
void app::reset_camera_offset()
{
camera_offset = _shader.project({TILE_MAX_DIM*TILE_SIZE[0]/2.f, TILE_MAX_DIM*TILE_SIZE[1]/2.f, 0});
//camera_offset = {};
}
void app::update(float dt)
{
do_camera(dt);
if (keys[key::quit])
Platform::Sdl2Application::exit(0);
}
void app::do_key(KeyEvent::Key k, KeyEvent::Modifiers m, bool pressed, bool repeated)
{
//using Mods = KeyEvent::Modifiers;
(void)m;
(void)repeated;
const key x = progn(switch (k) {
using enum KeyEvent::Key;
using enum key;
case W: return camera_up;
case A: return camera_left;
case S: return camera_down;
case D: return camera_right;
case Home: return camera_reset;
case Esc: return quit;
default: return MAX;
});
if (x != key::MAX)
keys[x] = pressed;
}
app::~app()
{
loader_::destroy();
}
void app::keyPressEvent(Platform::Sdl2Application::KeyEvent& event)
{
do_key(event.key(), event.modifiers(), true, event.isRepeated());
}
void app::keyReleaseEvent(Platform::Sdl2Application::KeyEvent& event)
{
do_key(event.key(), event.modifiers(), false, false);
}
} // namespace Magnum::Examples
MAGNUM_APPLICATION_MAIN(Magnum::Examples::app)
#ifdef _MSC_VER
# include <cstdlib>
# ifdef __clang__
# pragma clang diagnostic ignored "-Wmissing-prototypes"
# pragma clang diagnostic ignored "-Wmain"
# endif
extern "C" int __stdcall WinMain(void*, void*, void*, int /* nCmdShow */) {
return main(__argc, __argv);
}
#endif
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