demos/desertpillars/source/desertpillars.cpp

   1 #include <msp/fs/dir.h>
   2 #include <msp/gl/directionallight.h>
   3 #include <msp/gl/lighting.h>
   4 #include <msp/gl/sequencebuilder.h>
   5 #include <msp/gl/pointlight.h>
   6 #include <msp/gl/renderer.h>
   7 #include <msp/input/keys.h>
   8 #include <msp/time/utils.h>
   9 #include "desertpillars.h"
  10
  11 using namespace std;
  12 using namespace Msp;
  13
  14 DesertPillars::Options::Options()
  15 {
  16         wnd_opts.width = 1920;
  17         wnd_opts.height = 1080;
  18         gl_opts.gl_version_major = Graphics::GLOptions::LATEST_VERSION;
  19         gl_opts.core_profile = true;
  20 }
  21
  22
  23 DesertPillars::DesertPillars(int, char **):
  24         window(display, opts.wnd_opts),
  25         gl_device(window, opts.gl_opts),
  26         keyboard(window),
  27         resources(&res_mgr),
  28         view(window),
  29         camera(resources.get<GL::Camera>("Camera.camera")),
  30         lighting(resources.get<GL::Lighting>("Desert.lightn")),
  31         sphere(resources.get<GL::Object>("Sphere.object")),
  32         sphere_morph(0.0f),
  33         sphere_frozen(false),
  34         sphere_stopped(false),
  35         sun(resources.get<GL::DirectionalLight>("Sun.light")),
  36         sun_angle(Geometry::Angle<float>::from_turns(0.1f)),
  37         wisp(resources.get<GL::PointLight>("Wisp.light")),
  38         flare(resources.get<GL::Object>("Flare.object"), lighting.find_light_index(wisp)),
  39         camera_stopped(false)
  40 {
  41         window.set_title("Desert Pillars");
  42         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &DesertPillars::exit), 0));
  43         keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &DesertPillars::key_press), false));
  44
  45         GL::SequenceBuilder seq_bld(resources.get<GL::SequenceTemplate>("Desert.seq"));
  46         seq_bld.set_renderable("content", content);
  47         seq_bld.set_debug_name("Main sequence");
  48         sequence.reset(seq_bld.build(view));
  49
  50         GL::SequenceBuilder env_bld(resources.get<GL::SequenceTemplate>("Desert_environment.seq"));
  51         env_bld.set_renderable("content", *sequence->get_steps().front().get_renderable());
  52         env_bld.set_debug_name("Environment sequence");
  53         env_seq.reset(env_bld.build());
  54
  55         env_map = make_unique<GL::EnvironmentMap>(256, GL::RGB16F, 7, sphere, *env_seq);
  56         env_map->set_debug_name("Environment map");
  57         sphere.set_matrix(GL::Matrix::translation(GL::Vector3(0.0f, 0.0f, 3.3f)));
  58
  59         content.add(resources.get<GL::Scene>("Background.scene"));
  60         content.add(*env_map);
  61         content.add(flare);
  62
  63         camera.set_debug_name("Main camera");
  64
  65         view.set_content(sequence.get());
  66         view.set_camera(&camera);
  67
  68         const GL::Vector3 &sun_direction = sun.get_direction();
  69         sun_node = normalize(GL::Vector3(sun_direction.y, -sun_direction.x, 0.0f));
  70         sun_axis = normalize(cross(sun_direction, sun_node));
  71
  72         wisp_base_color = wisp.get_color();
  73
  74         const GL::Vector3 &cam_pos = camera.get_position();
  75         camera_distance = cam_pos.norm();
  76         camera_angle = Geometry::atan2(cam_pos.y, cam_pos.x);
  77         camera_base_height = Geometry::atan2(cam_pos.z, cam_pos.slice<2>(0).norm());
  78 }
  79
  80 int DesertPillars::main()
  81 {
  82         window.show();
  83         return Application::main();
  84 }
  85
  86 void DesertPillars::tick()
  87 {
  88         Time::TimeStamp t = Time::now();
  89         Time::TimeDelta dt = (last_tick ? t-last_tick : Time::zero);
  90         last_tick = t;
  91
  92         if(!sphere_frozen)
  93         {
  94                 sphere_morph += dt/Time::sec;
  95                 sphere.set_morph(sphere_morph);
  96         }
  97
  98         if(!sphere_stopped)
  99         {
 100                 sphere_angle += Geometry::Angle<float>::from_degrees(36*dt/Time::sec);
 101                 sphere.set_matrix(GL::Matrix().translate(GL::Vector3(0.0f, 0.0f, 3.3f))
 102                         .rotate(sphere_angle, GL::Vector3(0.0f, 0.0f, 1.0f)).rotate(sphere_angle*0.5f, GL::Vector3(1.0f, 0.0f, 0.0f)));
 103         }
 104
 105         if(!camera_stopped)
 106         {
 107                 camera_angle += Geometry::Angle<float>::from_degrees(12*dt/Time::sec);
 108                 Geometry::Angle<float> cam_height = camera_base_height+Geometry::Angle<float>::from_degrees(15.0f*cos(camera_angle*1.5f));
 109                 GL::Vector3 cam_dir(cos(camera_angle)*cos(cam_height), sin(camera_angle)*cos(cam_height), sin(cam_height));
 110                 camera.set_position(GL::Vector3(0.0f, 0.0f, 2.0f)+cam_dir*camera_distance);
 111                 camera.set_look_direction(-cam_dir);
 112         }
 113
 114         sun_angle += Geometry::Angle<float>::from_degrees(4*dt/Time::sec);
 115         sun.set_direction(GL::Matrix::rotation(sun_angle, sun_axis)*-sun_node);
 116
 117         wisp_angle += Geometry::Angle<float>::from_degrees(6*dt/Time::sec);
 118         float r = 3.1f+1.1f*cos(4.0f*wisp_angle);
 119         GL::Vector3 p(cos(wisp_angle)*r, sin(wisp_angle)*r, 3.6f+0.4f*sin(1.6f*wisp_angle));
 120         wisp.set_position(p);
 121         float twilight = 0.8f-min(max(sin(sun_angle), -0.05f), 0.2f)*4.0f;
 122         wisp.set_color(wisp_base_color*((3.0f-2.0f*twilight)*twilight*twilight));
 123         flare.set_matrix(GL::Matrix::translation(p));
 124
 125         display.tick();
 126         res_mgr.tick();
 127         view.render();
 128 }
 129
 130 void DesertPillars::key_press(unsigned key)
 131 {
 132         if(key==Input::KEY_ESC)
 133                 exit(0);
 134         else if(key==Input::KEY_SPACE)
 135                 camera_stopped = !camera_stopped;
 136         else if(key==Input::KEY_F)
 137                 sphere_frozen = !sphere_frozen;
 138         else if(key==Input::KEY_S)
 139                 sphere_stopped = !sphere_stopped;
 140 }
 141
 142
 143 DesertPillars::Resources::Resources(GL::ResourceManager *rm)
 144 {
 145         FS::Path base_dir = FS::get_sys_data_dir()/"demos"/"desertpillars"/"data";
 146         source.add_directory(base_dir);
 147         source.add_directory(base_dir/"textures");
 148         source.add_directory(base_dir/"exported");
 149         add_source(source);
 150
 151         set_resource_manager(rm);
 152 }
 153
 154
 155 void DesertPillars::MorphSphere::set_morph(float m)
 156 {
 157         shdata.uniform("morph", m);
 158 }
 159
 160 void DesertPillars::MorphSphere::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 161 {
 162         ObjectInstance::setup_render(renderer, tag);
 163         renderer.add_shader_data(shdata);
 164 }
 165
 166
 167 DesertPillars::LightFlare::LightFlare(const GL::Object &o, unsigned i):
 168         ObjectInstance(o)
 169 {
 170         shdata.uniform("flare_light_index", static_cast<int>(i));
 171 }
 172
 173 void DesertPillars::LightFlare::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 174 {
 175         ObjectInstance::setup_render(renderer, tag);
 176         renderer.add_shader_data(shdata);
 177 }