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 }
  19
  20
  21 DesertPillars::DesertPillars(int, char **):
  22         window(display, opts.wnd_opts),
  23         gl_device(window),
  24         keyboard(window),
  25         resources(&res_mgr),
  26         view(window),
  27         lighting(resources.get<GL::Lighting>("Desert.lightn")),
  28         sphere(resources.get<GL::Object>("Sphere.object")),
  29         sphere_morph(0.0f),
  30         sphere_frozen(false),
  31         sphere_stopped(false),
  32         sun(resources.get<GL::DirectionalLight>("Sun.light")),
  33         sun_angle(Geometry::Angle<float>::from_turns(0.1f)),
  34         wisp(resources.get<GL::PointLight>("Wisp.light")),
  35         flare(resources.get<GL::Object>("Flare.object"), lighting.find_light_index(wisp)),
  36         camera_stopped(false)
  37 {
  38         window.set_title("Desert Pillars");
  39         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &DesertPillars::exit), 0));
  40         keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &DesertPillars::key_press), false));
  41
  42         GL::SequenceBuilder seq_bld(resources.get<GL::SequenceTemplate>("Desert.seq"));
  43         seq_bld.set_renderable("content", content);
  44         seq_bld.set_debug_name("Main sequence");
  45         sequence.reset(seq_bld.build(view));
  46
  47         GL::SequenceBuilder env_bld(resources.get<GL::SequenceTemplate>("Desert_environment.seq"));
  48         env_bld.set_renderable("content", *sequence->get_steps().front().get_renderable());
  49         env_bld.set_debug_name("Environment sequence");
  50         env_seq.reset(env_bld.build());
  51
  52         env_map = make_unique<GL::EnvironmentMap>(256, GL::RGBA16F, 7, sphere, *env_seq);
  53         env_map->set_debug_name("Environment map");
  54         sphere.set_matrix(GL::Matrix::translation(GL::Vector3(0.0f, 0.0f, 3.3f)));
  55
  56         content.add(resources.get<GL::Scene>("Background.scene"));
  57         content.add(*env_map);
  58         content.add(flare);
  59
  60         camera.copy_parameters(resources.get<GL::Camera>("Camera.camera"));
  61         camera.set_debug_name("Main camera");
  62
  63         view.set_content(sequence.get());
  64         view.set_camera(&camera);
  65
  66         const GL::Vector3 &sun_direction = sun.get_direction();
  67         sun_node = normalize(GL::Vector3(sun_direction.y, -sun_direction.x, 0.0f));
  68         sun_axis = normalize(cross(sun_direction, sun_node));
  69
  70         wisp_base_color = wisp.get_color();
  71
  72         const GL::Vector3 &cam_pos = camera.get_position();
  73         camera_distance = cam_pos.norm();
  74         camera_angle = Geometry::atan2(cam_pos.y, cam_pos.x);
  75         camera_base_height = Geometry::atan2(cam_pos.z, cam_pos.slice<2>(0).norm());
  76 }
  77
  78 int DesertPillars::main()
  79 {
  80         window.show();
  81         return Application::main();
  82 }
  83
  84 void DesertPillars::tick()
  85 {
  86         Time::TimeStamp t = Time::now();
  87         Time::TimeDelta dt = (last_tick ? t-last_tick : Time::zero);
  88         last_tick = t;
  89
  90         if(!sphere_frozen)
  91         {
  92                 sphere_morph += dt/Time::sec;
  93                 sphere.set_morph(sphere_morph);
  94         }
  95
  96         if(!sphere_stopped)
  97         {
  98                 sphere_angle += Geometry::Angle<float>::from_degrees(36*dt/Time::sec);
  99                 sphere.set_matrix(GL::Matrix().translate(GL::Vector3(0.0f, 0.0f, 3.3f))
 100                         .rotate(sphere_angle, GL::Vector3(0.0f, 0.0f, 1.0f)).rotate(sphere_angle*0.5f, GL::Vector3(1.0f, 0.0f, 0.0f)));
 101         }
 102
 103         if(!camera_stopped)
 104         {
 105                 camera_angle += Geometry::Angle<float>::from_degrees(12*dt/Time::sec);
 106                 Geometry::Angle<float> cam_height = camera_base_height+Geometry::Angle<float>::from_degrees(15.0f*cos(camera_angle*1.5f));
 107                 GL::Vector3 cam_dir(cos(camera_angle)*cos(cam_height), sin(camera_angle)*cos(cam_height), sin(cam_height));
 108                 camera.set_position(GL::Vector3(0.0f, 0.0f, 2.0f)+cam_dir*camera_distance);
 109                 camera.set_look_direction(-cam_dir);
 110         }
 111
 112         sun_angle += Geometry::Angle<float>::from_degrees(4*dt/Time::sec);
 113         sun.set_direction(GL::Matrix::rotation(sun_angle, sun_axis)*-sun_node);
 114
 115         wisp_angle += Geometry::Angle<float>::from_degrees(6*dt/Time::sec);
 116         float r = 3.1f+1.1f*cos(4.0f*wisp_angle);
 117         GL::Vector3 p(cos(wisp_angle)*r, sin(wisp_angle)*r, 3.6f+0.4f*sin(1.6f*wisp_angle));
 118         wisp.set_position(p);
 119         float twilight = 0.8f-min(max(sin(sun_angle), -0.05f), 0.2f)*4.0f;
 120         wisp.set_color(wisp_base_color*((3.0f-2.0f*twilight)*twilight*twilight));
 121         flare.set_matrix(GL::Matrix::translation(p));
 122
 123         display.tick();
 124         res_mgr.tick();
 125         view.render();
 126 }
 127
 128 void DesertPillars::key_press(unsigned key)
 129 {
 130         if(key==Input::KEY_ESC)
 131                 exit(0);
 132         else if(key==Input::KEY_SPACE)
 133                 camera_stopped = !camera_stopped;
 134         else if(key==Input::KEY_F)
 135                 sphere_frozen = !sphere_frozen;
 136         else if(key==Input::KEY_S)
 137                 sphere_stopped = !sphere_stopped;
 138 }
 139
 140
 141 DesertPillars::Resources::Resources(GL::ResourceManager *rm)
 142 {
 143         FS::Path base_dir = FS::get_sys_data_dir()/"demos"/"desertpillars"/"data";
 144         source.add_directory(base_dir);
 145         source.add_directory(base_dir/"textures");
 146         source.add_directory(base_dir/"exported");
 147         add_source(source);
 148
 149         set_resource_manager(rm);
 150 }
 151
 152
 153 void DesertPillars::MorphSphere::set_morph(float m)
 154 {
 155         shdata.uniform("morph", m);
 156 }
 157
 158 void DesertPillars::MorphSphere::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 159 {
 160         ObjectInstance::setup_render(renderer, tag);
 161         renderer.add_shader_data(shdata);
 162 }
 163
 164
 165 DesertPillars::LightFlare::LightFlare(const GL::Object &o, unsigned i):
 166         ObjectInstance(o)
 167 {
 168         shdata.uniform("flare_light_index", static_cast<int>(i));
 169 }
 170
 171 void DesertPillars::LightFlare::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 172 {
 173         ObjectInstance::setup_render(renderer, tag);
 174         renderer.add_shader_data(shdata);
 175 }