explosions make light now.

data/shader/gameobjects.frag

@@ -10,6 +10,10 @@ uniform vec3  materialColor;
 uniform int   materialKind;
 uniform int   materialSeed;
 
+uniform int   explLightsNum;
+uniform vec3  explLightsPos[10];
+uniform float explLightsIntensities[10];
+
 void main()
 {
   vec3 Eye       = normalize(-vertex);
@@ -27,7 +31,31 @@ void main()
   vec3 color = materialColor;
   color = max(vec3(0.0), min(vec3(1.0), color));
 
-  vec3 IDiffuse  = vec3(color) * lightColor * max(dot(normal, lightDirection), 0.0);
+  //vec3 light = lightColor * max(dot(normal, lightDirection), 0.0);
+  vec3 light = vec3(0.0);
+
+  int i;
+  for (i=0; i<explLightsNum; i++) {
+    vec3 explLightColor = vec3(1.0, 0.8, 0.3);
+    vec3 diff = vertex - explLightsPos[i];
+    float l = 10.0*length(diff);
+    float dir = max(0.0, -dot(normal, diff));
+    float dp = max(0.0, 1.0-l);
+
+    float intensity = 10.0;
+    if (dp == 0.0) {
+        intensity *= dir;
+    } else {
+        intensity *= dp;
+    }
+    intensity /= 1.0 + 0.5*l*l;
+
+    light += intensity * pow(explLightsIntensities[i], 2.0) * explLightColor;
+  }
+
+  light = max(vec3(0.0), light);
+
+  vec3 IDiffuse  = vec3(color) * light;
 
   // TODO make instensity/exponent as parameter
   //vec3 ISpecular = lightColor * 5.0 * pow(max(dot(Reflected, Eye), 0.0), 2.0);

data/shader/particle.frag

@@ -1,5 +1,4 @@
 #version 120
-varying vec3  position;
 varying vec2  vertex;
 varying vec3  velocity;
 varying float decay;

data/shader/particle.vert

@@ -14,7 +14,6 @@ varying float decay;
 varying vec3  velocity;
 varying vec2  vertex;
 varying float explCenterDist;
-varying vec3  position;
 
 uniform float aspectRatio;
 
@@ -47,7 +46,6 @@ void main()
 
   vertex   = base.xy;
   velocity = in_velocity;
-  position = in_position;
 
   explCenterDist = length(explCenter - offset);
 }