X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld.cpp;h=30e92297d7402d4b040f09eebc9053b872d1052f;hb=32a2a1231de8438f8408007c41247361b1c52417;hp=f14ac73d37a6cbfd441e85f1deb124ddb3a1743f;hpb=374843f5b3ae60c0d02704a8da5100ac8abe7f1a;p=blank.git

diff --git a/src/world.cpp b/src/world.cpp
index f14ac73..30e9229 100644
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -6,35 +6,124 @@
 
 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.Add(BlockType{ true, { 1.0f, 1.0f, 1.0f }, &blockShape }); // white block
-	blockType.Add(BlockType{ true, { 1.0f, 1.0f, 1.0f }, &stairShape }); // white stair
-	blockType.Add(BlockType{ true, { 1.0f, 1.0f, 1.0f }, &slabShape }); // white slab
-	blockType.Add(BlockType{ true, { 1.0f, 0.0f, 0.0f }, &blockShape }); // red block
-	blockType.Add(BlockType{ true, { 1.0f, 0.0f, 0.0f }, &stairShape }); // red stair
-	blockType.Add(BlockType{ true, { 1.0f, 0.0f, 0.0f }, &slabShape }); // red slab
-	blockType.Add(BlockType{ true, { 0.0f, 1.0f, 0.0f }, &blockShape }); // green block
-	blockType.Add(BlockType{ true, { 0.0f, 1.0f, 0.0f }, &stairShape }); // green stair
-	blockType.Add(BlockType{ true, { 0.0f, 1.0f, 0.0f }, &slabShape }); // green slab
-	blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &blockShape }); // blue block
-	blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &stairShape }); // blue stair
-	blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &slabShape }); // blue slab
+	BlockType::Faces block_fill = {  true,  true,  true,  true,  true,  true };
+	BlockType::Faces slab_fill  = { false,  true, false, false, false, false };
+	BlockType::Faces stair_fill = { false,  true, false, false, false,  true };
+
+	{ // white block
+		BlockType type(true, { 1.0f, 1.0f, 1.0f }, &blockShape);
+		type.block_light = true;
+		type.fill = block_fill;
+		blockType.Add(type);
+	}
+	{ // white slab
+		BlockType type(true, { 1.0f, 1.0f, 1.0f }, &slabShape);
+		type.block_light = true;
+		type.fill = slab_fill;
+		blockType.Add(type);
+	}
+	{ // white stair
+		BlockType type(true, { 1.0f, 1.0f, 1.0f }, &stairShape);
+		type.block_light = true;
+		type.fill = stair_fill;
+		blockType.Add(type);
+	}
+
+	{ // red block
+		BlockType type(true, { 1.0f, 0.0f, 0.0f }, &blockShape);
+		type.block_light = true;
+		type.fill = block_fill;
+		blockType.Add(type);
+	}
+	{ // red slab
+		BlockType type(true, { 1.0f, 0.0f, 0.0f }, &slabShape);
+		type.block_light = true;
+		type.fill = slab_fill;
+		blockType.Add(type);
+	}
+	{ // red stair
+		BlockType type(true, { 1.0f, 0.0f, 0.0f }, &stairShape);
+		type.block_light = true;
+		type.fill = stair_fill;
+		blockType.Add(type);
+	}
 
+	{ // green block
+		BlockType type(true, { 0.0f, 1.0f, 0.0f }, &blockShape);
+		type.block_light = true;
+		type.fill = block_fill;
+		blockType.Add(type);
+	}
+	{ // green slab
+		BlockType type(true, { 0.0f, 1.0f, 0.0f }, &slabShape);
+		type.block_light = true;
+		type.fill = slab_fill;
+		blockType.Add(type);
+	}
+	{ // green stair
+		BlockType type(true, { 0.0f, 1.0f, 0.0f }, &stairShape);
+		type.block_light = true;
+		type.fill = stair_fill;
+		blockType.Add(type);
+	}
+
+	{ // blue block
+		BlockType type(true, { 0.0f, 0.0f, 1.0f }, &blockShape);
+		type.block_light = true;
+		type.fill = block_fill;
+		blockType.Add(type);
+	}
+	{ // blue slab
+		BlockType type(true, { 0.0f, 0.0f, 1.0f }, &slabShape);
+		type.block_light = true;
+		type.fill = slab_fill;
+		blockType.Add(type);
+	}
+	{ // blue stair
+		BlockType type(true, { 0.0f, 0.0f, 1.0f }, &stairShape);
+		type.block_light = true;
+		type.fill = stair_fill;
+		blockType.Add(type);
+	}
+
+	{ // glowing yellow block
+		BlockType type(true, { 1.0f, 1.0f, 0.0f }, &blockShape);
+		type.luminosity = 10;
+		type.block_light = true;
+		type.fill = block_fill;
+		blockType.Add(type);
+	}
+
+	generate.Space(0);
+	generate.Light(13);
 	generate.Solids({ 1, 4, 7, 10 });
 
-	player.Position({ 4.0f, 4.0f, 4.0f });
+	player = &AddEntity();
+	player->Position({ 4.0f, 4.0f, 4.0f });
 
-	chunks.Generate({ -4, -4, -4 }, { 5, 5, 5});
+	chunks.GenerateSurrounding(player->ChunkCoords());
 }
 
 
+namespace {
+
+struct Candidate {
+	Chunk *chunk;
+	float dist;
+};
+
+std::vector<Candidate> candidates;
+
+}
+
 bool World::Intersection(
 		const Ray &ray,
 		const glm::mat4 &M,
@@ -42,18 +131,30 @@ bool World::Intersection(
 		int *blkid,
 		float *dist,
 		glm::vec3 *normal) {
+	candidates.clear();
+
+	for (Chunk &cur_chunk : chunks.Loaded()) {
+		float cur_dist;
+		if (cur_chunk.Intersection(ray, M * cur_chunk.Transform(player->ChunkCoords()), cur_dist)) {
+			candidates.push_back({ &cur_chunk, cur_dist });
+		}
+	}
+
+	if (candidates.empty()) return false;
+
 	Chunk *closest_chunk = nullptr;
-	int closest_blkid = -1;
 	float closest_dist = std::numeric_limits<float>::infinity();
+	int closest_blkid = -1;
 	glm::vec3 closest_normal;
 
-	for (Chunk &cur_chunk : chunks.Loaded()) {
+	for (Candidate &cand : candidates) {
+		if (cand.dist > closest_dist) continue;
 		int cur_blkid;
 		float cur_dist;
 		glm::vec3 cur_normal;
-		if (cur_chunk.Intersection(ray, M * cur_chunk.Transform(player.ChunkCoords()), &cur_blkid, &cur_dist, &cur_normal)) {
+		if (cand.chunk->Intersection(ray, M * cand.chunk->Transform(player->ChunkCoords()), cur_blkid, cur_dist, cur_normal)) {
 			if (cur_dist < closest_dist) {
-				closest_chunk = &cur_chunk;
+				closest_chunk = cand.chunk;
 				closest_blkid = cur_blkid;
 				closest_dist = cur_dist;
 				closest_normal = cur_normal;
@@ -77,6 +178,10 @@ bool World::Intersection(
 }
 
 
+Chunk &World::PlayerChunk() {
+	return chunks.ForceLoad(player->ChunkCoords());
+}
+
 Chunk &World::Next(const Chunk &to, const glm::tvec3<int> &dir) {
 	const Chunk::Pos tgt_pos = to.Position() + dir;
 	return chunks.ForceLoad(tgt_pos);
@@ -84,24 +189,38 @@ Chunk &World::Next(const Chunk &to, const glm::tvec3<int> &dir) {
 
 
 void World::Update(int dt) {
-	player.Update(dt);
-	chunks.Rebase(player.ChunkCoords());
+	for (Entity &entity : entities) {
+		entity.Update(dt);
+	}
+	chunks.Rebase(player->ChunkCoords());
 	chunks.Update();
 }
 
 
 void World::Render(DirectionalLighting &program) {
 	program.SetLightDirection({ -1.0f, -3.0f, -2.0f });
-	program.SetView(glm::inverse(player.Transform(player.ChunkCoords())));
+	// 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()) {
-		glm::mat4 m(chunk.Transform(player.ChunkCoords()));
+		glm::mat4 m(chunk.Transform(player->ChunkCoords()));
 		program.SetM(m);
 		glm::mat4 mvp(program.GetVP() * m);
 		if (!CullTest(Chunk::Bounds(), mvp)) {
 			chunk.Draw();
 		}
 	}
+
+	for (Entity &entity : entities) {
+		if (entity.HasShape()) {
+			program.SetM(entity.Transform(player->ChunkCoords()));
+			entity.Draw();
+		}
+	}
 }
 
 }