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/gl/tests.h>
   8 #include <msp/input/keys.h>
   9 #include <msp/time/utils.h>
  10 #include "desertpillars.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 DesertPillars::Options::Options()
  16 {
  17         wnd_opts.width = 1920;
  18         wnd_opts.height = 1080;
  19         gl_opts.gl_version_major = Graphics::GLOptions::LATEST_VERSION;
  20         gl_opts.core_profile = true;
  21 }
  22
  23
  24 DesertPillars::DesertPillars(int, char **):
  25         window(display, opts.wnd_opts),
  26         gl_device(window, opts.gl_opts),
  27         keyboard(window),
  28         resources(&res_mgr),
  29         view(window),
  30         camera(resources.get<GL::Camera>("Camera.camera")),
  31         lighting(resources.get<GL::Lighting>("Desert.lightn")),
  32         sphere(resources.get<GL::Object>("Sphere.object")),
  33         sphere_morph(0.0f),
  34         sphere_frozen(false),
  35         sphere_stopped(false),
  36         sun(resources.get<GL::DirectionalLight>("Sun.light")),
  37         sun_angle(Geometry::Angle<float>::from_turns(0.1f)),
  38         wisp(resources.get<GL::PointLight>("Wisp.light")),
  39         flare(resources.get<GL::Object>("Flare.object"), lighting.find_light_index(wisp)),
  40         camera_stopped(false)
  41 {
  42         window.set_title("Desert Pillars");
  43         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &DesertPillars::exit), 0));
  44         keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &DesertPillars::key_press), false));
  45
  46         GL::SequenceBuilder seq_bld(resources.get<GL::SequenceTemplate>("Desert.seq"));
  47         seq_bld.set_renderable("content", content);
  48         seq_bld.set_debug_name("Main sequence");
  49         sequence.reset(seq_bld.build(view));
  50
  51         GL::SequenceBuilder env_bld(resources.get<GL::SequenceTemplate>("Desert_environment.seq"));
  52         env_bld.set_renderable("content", *sequence->get_steps().front().get_renderable());
  53         env_bld.set_debug_name("Environment sequence");
  54         env_seq.reset(env_bld.build());
  55
  56         env_map = make_unique<GL::EnvironmentMap>(256, GL::RGB16F, 7, sphere, *env_seq);
  57         env_map->set_debug_name("Environment map");
  58         sphere.set_matrix(GL::Matrix::translation(GL::Vector3(0.0f, 0.0f, 3.3f)));
  59
  60         content.add(resources.get<GL::Scene>("Background.scene"));
  61         content.add(*env_map);
  62         content.add(flare);
  63
  64         camera.set_debug_name("Main camera");
  65
  66         view.set_content(sequence.get());
  67         view.set_camera(&camera);
  68
  69         const GL::Vector3 &sun_direction = sun.get_direction();
  70         sun_node = normalize(GL::Vector3(sun_direction.y, -sun_direction.x, 0.0f));
  71         sun_axis = normalize(cross(sun_direction, sun_node));
  72
  73         wisp_base_color = wisp.get_color();
  74
  75         const GL::Vector3 &cam_pos = camera.get_position();
  76         camera_distance = cam_pos.norm();
  77         camera_angle = Geometry::atan2(cam_pos.y, cam_pos.x);
  78         camera_base_height = Geometry::atan2(cam_pos.z, cam_pos.slice<2>(0).norm());
  79 }
  80
  81 int DesertPillars::main()
  82 {
  83         window.show();
  84         return Application::main();
  85 }
  86
  87 void DesertPillars::tick()
  88 {
  89         Time::TimeStamp t = Time::now();
  90         Time::TimeDelta dt = (last_tick ? t-last_tick : Time::zero);
  91         last_tick = t;
  92
  93         if(!sphere_frozen)
  94         {
  95                 sphere_morph += dt/Time::sec;
  96                 sphere.set_morph(sphere_morph);
  97         }
  98
  99         if(!sphere_stopped)
 100         {
 101                 sphere_angle += Geometry::Angle<float>::from_degrees(36*dt/Time::sec);
 102                 sphere.set_matrix(GL::Matrix().translate(GL::Vector3(0.0f, 0.0f, 3.3f))
 103                         .rotate(sphere_angle, GL::Vector3(0.0f, 0.0f, 1.0f)).rotate(sphere_angle*0.5f, GL::Vector3(1.0f, 0.0f, 0.0f)));
 104         }
 105
 106         if(!camera_stopped)
 107         {
 108                 camera_angle += Geometry::Angle<float>::from_degrees(12*dt/Time::sec);
 109                 Geometry::Angle<float> cam_height = camera_base_height+Geometry::Angle<float>::from_degrees(15.0f*cos(camera_angle*1.5f));
 110                 GL::Vector3 cam_dir(cos(camera_angle)*cos(cam_height), sin(camera_angle)*cos(cam_height), sin(cam_height));
 111                 camera.set_position(GL::Vector3(0.0f, 0.0f, 2.0f)+cam_dir*camera_distance);
 112                 camera.set_look_direction(-cam_dir);
 113         }
 114
 115         sun_angle += Geometry::Angle<float>::from_degrees(4*dt/Time::sec);
 116         sun.set_direction(GL::Matrix::rotation(sun_angle, sun_axis)*-sun_node);
 117
 118         wisp_angle += Geometry::Angle<float>::from_degrees(6*dt/Time::sec);
 119         float r = 3.1f+1.1f*cos(4.0f*wisp_angle);
 120         GL::Vector3 p(cos(wisp_angle)*r, sin(wisp_angle)*r, 3.6f+0.4f*sin(1.6f*wisp_angle));
 121         wisp.set_position(p);
 122         float twilight = 0.8f-min(max(sin(sun_angle), -0.05f), 0.2f)*4.0f;
 123         wisp.set_color(wisp_base_color*((3.0f-2.0f*twilight)*twilight*twilight));
 124         flare.set_matrix(GL::Matrix::translation(p));
 125
 126         display.tick();
 127         res_mgr.tick();
 128         view.render();
 129 }
 130
 131 void DesertPillars::key_press(unsigned key)
 132 {
 133         if(key==Input::KEY_ESC)
 134                 exit(0);
 135         else if(key==Input::KEY_SPACE)
 136                 camera_stopped = !camera_stopped;
 137         else if(key==Input::KEY_F)
 138                 sphere_frozen = !sphere_frozen;
 139         else if(key==Input::KEY_S)
 140                 sphere_stopped = !sphere_stopped;
 141 }
 142
 143
 144 DesertPillars::Resources::Resources(GL::ResourceManager *rm)
 145 {
 146         FS::Path base_dir = FS::get_sys_data_dir()/"demos"/"desertpillars"/"data";
 147         source.add_directory(base_dir);
 148         source.add_directory(base_dir/"textures");
 149         source.add_directory(base_dir/"exported");
 150         add_source(source);
 151
 152         set_resource_manager(rm);
 153 }
 154
 155
 156 void DesertPillars::MorphSphere::set_morph(float m)
 157 {
 158         shdata.uniform("morph", m);
 159 }
 160
 161 void DesertPillars::MorphSphere::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 162 {
 163         ObjectInstance::setup_render(renderer, tag);
 164         renderer.add_shader_data(shdata);
 165 }
 166
 167
 168 DesertPillars::LightFlare::LightFlare(const GL::Object &o, unsigned i):
 169         ObjectInstance(o)
 170 {
 171         shdata.uniform("flare_light_index", static_cast<int>(i));
 172 }
 173
 174 void DesertPillars::LightFlare::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 175 {
 176         ObjectInstance::setup_render(renderer, tag);
 177         renderer.add_shader_data(shdata);
 178 }