planet distribution is nice now and one sun is always placed with bigger radius and space nearby.

data/shader/gameobjects.frag

@@ -6,8 +6,9 @@ varying vec3  lightDirection;
 
 uniform vec3  lightColor;
 uniform vec3  lightPosition;
-uniform float materialKind;
 uniform vec3  materialColor;
+uniform int   materialKind;
+uniform int   materialSeed;
 
 void main()
 {
@@ -23,27 +24,15 @@ void main()
   }
 
     // TODO: add noise texture
-  vec3 IDiffuse  = vec3(materialColor) * lightColor * max(dot(normal, lightDirection), 0.0);
+  vec3 color = materialColor;
+  color = max(vec3(0.0), min(vec3(1.0), color));
+
+  vec3 IDiffuse  = vec3(color) * lightColor * max(dot(normal, lightDirection), 0.0);
 
   // TODO make instensity/exponent as parameter
   //vec3 ISpecular = lightColor * 5.0 * pow(max(dot(Reflected, Eye), 0.0), 2.0);
-  vec3 ISpecular = lightColor * pow(max(dot(Reflected, Eye), 0.0), 2.0);
+  //vec3 ISpecular = lightColor * pow(max(dot(Reflected, Eye), 0.0), 2.0);
 
-  if (dot(lightDirection, normal) <= 0.0) {
+  //gl_FragColor   = vec4((IAmbient + IDiffuse) + ISpecular, 1.0);
-      ISpecular = vec3(0.0, 0.0, 0.0);
+  gl_FragColor   = vec4((IAmbient + IDiffuse), 1.0);
-  }
-
-    // p: point of the fragment on the surface
-    //vec3 v_eye = normalize(pos_eye - pos_space); // point from p to eye
-    //vec3 v_sun = normalize(sun_light_dir); // points from p to the sun
-
-    //float specular = spec_int * pow(
-    //    clamp(dot((v_eye + v_sun)/2.0, normal), 0.0, 1.0),
-    //    2.0*specular_exponent);
-
-    //ISpecular = vec3(1.0, 0.0, 0.0) * specular;
-
-  //gl_FragColor = vec4(ISpecular, 1.0);
-  gl_FragColor   = vec4((IAmbient + IDiffuse) + ISpecular, 1.0);
-  //gl_FragColor = vec4(0.5+0.5*normal, 1.0);
 }

game/main.cpp

@@ -10,6 +10,8 @@
 #include "network/server.hpp"
 #include "options.hpp"
 
+#include <sys/time.h>
+
 uint64_t optionsFlags;
 
 using asio::ip::tcp;
@@ -71,6 +73,8 @@ int main(int argc, char *argv[])
         }
     }
 
+    srand(time(NULL));
+
     Game game;
     game.state()->setDeveloperMode(devMode);
 
@@ -78,7 +82,7 @@ int main(int argc, char *argv[])
     Server s(io_service, game.state(), atoi(port) );
 
     //GameWindow window(500, 500, &game);
-    GameWindow window(750, 750, &game);
+    GameWindow window(500, 500, &game);
     window.set_maxfps(60.0);
     window.open();
 

game/renderer_polygon_3d/renderer_polygon_3d.cpp

@@ -171,7 +171,8 @@ namespace endofthejedi {
 
             glm::vec3 c = planet->getColor();
             glUniform3f(m_shader.location("materialColor"), c.x, c.y, c.z);
-            glUniform1f(m_shader.location("materialKind"), (float) planet->material);
+            glUniform1i(m_shader.location("materialSeed"), planet->seed);
+            glUniform1i(m_shader.location("materialKind"), (int) planet->material);
 
             m_planetModel->render();
         }
@@ -294,16 +295,22 @@ namespace endofthejedi {
 
     void RendererPolygon3d::configureLightningInShader()
     {
-        glm::vec3 c = glm::vec3(1.0, 1.0, 0.8);
+        // TODO: add a few small lights for explosions so they lit the
-        glUniform3f(m_shader.location("lightColor"), c.x, c.y, c.z);
+        // surroundsings
 
+        // TODO: use the sun planet color for this!
+        glm::vec3 c = glm::vec3(1.0, 1.0, 0.8);
 		glm::vec3 p = glm::vec3(0.3f, 0.4f, 0.0f);
+
         for (const game::Planet *planet : m_state->planets) {
             if (planet->material == game::Planet::Material::Sun) {
                 p = glm::vec3(planet->position, 0.0);
+                c = planet->getColor();
                 break;
             }
         }
+
         glUniform3f(m_shader.location("lightPosition"), p.x, p.y, p.z);
+        glUniform3f(m_shader.location("lightColor"),    c.x, c.y, c.z);
     }
 }

game/state/state.cpp

@@ -19,7 +19,7 @@
 #include "util.hpp"
 
 namespace game {
-    void State::init(bool devMode)
+    void State::init(int numPlanets, bool devMode)
     {
         m_nextId             = 0;
         m_time               = 0.0;
@@ -30,31 +30,72 @@ namespace game {
         m_maxNumTraces       = 10;
         m_developerMode      = devMode;
 
-        bool planetsOnCircle = false;
-
-        int numPlanets = 10;
-        for (int i=0; i<numPlanets; i++) {
-            float t = i / static_cast<float>(numPlanets);
-            t *= 2.0*M_PI;
-
-            // distribute but not in the center
-            int tries = 0;
-            glm::vec2 pos;
-            do {
-                float cr = 0.7;
-                if (planetsOnCircle) {
-                    pos = cr * glm::vec2(std::sin(t), std::cos(t));
-                } else {
-                    pos = cr * util::randv2_m1_1();
-                }
-            } while(glm::length(pos) < 0.2 && tries++ < 1000);
-
         Planet::Material mat = Planet::Material::Rock;
-            if (i == 0) {
+
+        for (int i=0; i<numPlanets; i++) {
+            switch(i) {
+                case 0:
                     mat = Planet::Material::Sun;
+                    break;
+
+                case 1:
+                case 2:
+                    mat = Planet::Material::Water;
+                    break;
+
+                case 3:
+                case 4:
+                    mat = Planet::Material::Sand;
+                    break;
+
+                case 5:
+                    mat = Planet::Material::Metal;
+                    break;
+
+                default:
+                    mat = Planet::Material::Rock;
             }
 
-            planets.push_back(new Planet(pos, i, 0.03 + 0.07*util::randf_0_1(), mat));
+            glm::vec2 pos;
+            float radius = 0.03 + 0.07*util::randf_0_1();
+            if (i == 0) {
+                // sun is bigger but not too big
+                radius += 0.05;
+                if (radius > 0.9) {
+                    radius = 0.9;
+                }
+
+            }
+
+            bool tooNearToCenter         = true;
+            bool collidesWithOtherPlanet = true;
+
+            // distribute but not in the center and not next to other planets
+            int tries = 0;
+            do {
+                pos = util::randv2_m1_1();
+
+                collidesWithOtherPlanet = false;
+                tooNearToCenter = glm::length(pos) < 0.1;
+
+                if (!tooNearToCenter) {
+                    for (const Planet *other : planets) {
+                        float d = glm::distance(other->position, pos);
+
+                        float extraDist = (other->material == Planet::Material::Sun)
+                            ? 4.0
+                            : 1.0;
+
+                        if (d < extraDist*other->radius + radius) {
+                            collidesWithOtherPlanet = true;
+                            break;
+                        }
+                    }
+                }
+
+            } while((collidesWithOtherPlanet || tooNearToCenter) && tries++ < 1000);
+
+            planets.push_back(new Planet(pos, i, radius, mat));
         }
     }
 

game/state/state.hpp

@@ -40,7 +40,7 @@ namespace game {
 
         // called to setup the state (randomize planets, kill
         // traces/missiles/ships etc.)
-        void init(bool devMode=false);
+        void init(int numPlanets=15, bool devMode=false);
 
         // main method to advance the simulation by the given timestamp in
         // seconds.