Sun light direction fix

src/graphics/BlocksRenderer.cpp

@@ -126,7 +126,7 @@ void BlocksRenderer::face(const ivec3& coord,
 		return;
 	}
 
-	const vec3 sunVector = vec3(0.411934f, 0.863868f, 0.279161f);
+	const vec3 sunVector = vec3(0.411934f, 0.863868f, -0.279161f);
 	float d = glm::dot(vec3(axisZ.x, axisZ.y, axisZ.z), sunVector);
 	d = 0.7f +  d*0.3f;
 
@@ -159,7 +159,7 @@ void BlocksRenderer::face(const vec3& coord,
 	const vec3 Z(axisZ);
 	
     if (lights) {
-        const vec3 sunVector = vec3(0.431934f, 0.863868f, 0.259161f);
+        const vec3 sunVector = vec3(0.431934f, 0.863868f, -0.259161f);
         float d = glm::dot(Z, sunVector);
         d = 0.75f +  d*0.25f;
         vec4 tint(d);

src/graphics/BlocksRenderer.h

@@ -44,7 +44,8 @@ class BlocksRenderer {
 				const glm::ivec3& axisY,
 				const glm::ivec3& axisZ);
 
-	void vertex(const glm::vec3& coord, float u, float v, 
+	void vertex(const glm::vec3& coord, 
+                float u, float v, 
 				const glm::vec4& brightness,
 				const glm::ivec3& axisX,
 				const glm::ivec3& axisY,