1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
#include "app.hpp"
#include "tile-defs.hpp"
#include "camera-offset.hpp"
#include <Magnum/GL/DefaultFramebuffer.h>
#include <Magnum/GL/Renderer.h>
namespace floormat {
void app::drawEvent() {
if (const float dt = timeline.previousFrameDuration(); dt > 0)
{
constexpr float RC = 0.5f;
const float alpha = dt/(dt + RC);
if (_frame_time > 0)
_frame_time = _frame_time*(1-alpha) + alpha*dt;
else
_frame_time = dt;
}
{
const float dt = std::clamp(timeline.previousFrameDuration(), 1e-3f, 1e-1f);
update(dt);
}
GL::defaultFramebuffer.clear(GL::FramebufferClear::Color);
_shader.set_tint({1, 1, 1, 1});
{
const with_shifted_camera_offset o{_shader, BASE_X, BASE_Y};
draw_world();
draw_cursor_tile();
}
display_menu();
swapBuffers();
redraw();
timeline.nextFrame();
}
std::array<std::int16_t, 4> app::get_draw_bounds() const noexcept
{
std::int16_t minx = BASE_X, maxx = BASE_X, miny = BASE_Y, maxy = BASE_Y;
{
auto fn = [&](std::int32_t x, std::int32_t y) {
const auto pos = pixel_to_tile({float(x + BASE_X), float(y + BASE_Y)}).chunk();
minx = std::min(minx, pos.x);
maxx = std::max(maxx, pos.x);
miny = std::min(miny, pos.y);
maxy = std::max(maxy, pos.y);
};
const auto sz = windowSize();
const auto x = sz[0]-1, y = sz[1]-1;
fn(0, 0);
fn(x, 0);
fn(0, y);
fn(x, y);
}
return {minx, maxx, miny, maxy};
}
void app::draw_world()
{
auto [minx, maxx, miny, maxy] = get_draw_bounds();
for (std::int16_t y = miny; y <= maxy; y++)
for (std::int16_t x = minx; x <= maxx; x++)
_floor_mesh.draw(_shader, *_world[chunk_coords{x, y}]);
for (std::int16_t y = miny; y <= maxy; y++)
for (std::int16_t x = minx; x <= maxx; x++)
_wall_mesh.draw(_shader, *_world[chunk_coords{x, y}]);
}
void app::draw_wireframe_quad(global_coords pos)
{
constexpr float LINE_WIDTH = 1;
const auto pt = pos.to_signed();
if (const auto& [c, tile] = _world[pos]; tile.ground_image)
{
const Vector3 center{pt[0]*TILE_SIZE[0], pt[1]*TILE_SIZE[1], 0};
_shader.set_tint({1, 0, 0, 1});
_wireframe_quad.draw(_shader, {center, {TILE_SIZE[0], TILE_SIZE[1]}, LINE_WIDTH});
}
}
void app::draw_wireframe_box(local_coords pt)
{
constexpr float LINE_WIDTH = 1.5;
constexpr auto X = TILE_SIZE[0], Y = TILE_SIZE[1];
constexpr Vector3 size{TILE_SIZE[0], TILE_SIZE[1], TILE_SIZE[2]*1.5f};
const Vector3 center1{X*pt.x, Y*pt.y, 0};
_shader.set_tint({0, 1, 0, 1});
_wireframe_box.draw(_shader, {center1, size, LINE_WIDTH});
}
void app::draw_cursor_tile()
{
if (_cursor_tile)
draw_wireframe_quad(*_cursor_tile);
}
} // namespace floormat
|
