get world seed from command line arguments

[blank.git] / src / world.cpp

diff --git a/src/world.cpp b/src/world.cpp
index 7ab7fe486ec3af8a3d202580e35d47644f79bc22..40dd6bdfc578ffaa22af252f3b242f7978ea8f87 100644 (file)
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -6,12 +6,12 @@
 
 namespace blank {
 
-World::World()
+World::World(unsigned int seed)
 : blockType()
 , blockShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.5f, 0.5f }})
 , stairShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.5f, 0.5f }}, { 0.0f, 0.0f })
 , slabShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.0f, 0.5f }})
-, generate(0)
+, generate(seed)
 , chunks(blockType, generate)
 , player() {
        BlockType::Faces block_fill = {  true,  true,  true,  true,  true,  true };
@@ -103,6 +103,7 @@ World::World()
        }
 
        generate.Space(0);
+       generate.Light(13);
        generate.Solids({ 1, 4, 7, 10 });
 
        player = &AddEntity();
@@ -198,6 +199,11 @@ void World::Update(int dt) {
 
 void World::Render(DirectionalLighting &program) {
        program.SetLightDirection({ -1.0f, -3.0f, -2.0f });
+       // fade out reaches 1/e (0.3679) at 1/fog_density,
+       // gets less than 0.01 at e/(2 * fog_density)
+       // I chose 0.011 because it yields 91 and 124 for those, so
+       // slightly less than 6 and 8 chunks
+       program.SetFogDensity(0.011f);
        program.SetView(glm::inverse(player->Transform(player->ChunkCoords())));
 
        for (Chunk &chunk : chunks.Loaded()) {