X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fchunk.cpp;h=ae13aec24c4e6de4de2d6e429dcf662bcb98a9d3;hb=46509f82dcea114b004c53a7f3a9608f2518077f;hp=10031e77e359deb60145bdefe24d2195baecfa6e;hpb=2d5671c2ef977defae9ce0ce7248582ab3e8f011;p=blank.git

diff --git a/src/chunk.cpp b/src/chunk.cpp
index 10031e7..ae13aec 100644
--- a/src/chunk.cpp
+++ b/src/chunk.cpp
@@ -6,6 +6,12 @@
 #include <glm/gtx/transform.hpp>
 
 
+namespace {
+
+blank::Model::Buffer buf;
+
+}
+
 namespace blank {
 
 Chunk::Chunk(const BlockTypeRegistry &types)
@@ -50,24 +56,14 @@ void Chunk::Draw() {
 bool Chunk::Intersection(
 	const Ray &ray,
 	const glm::mat4 &M,
-	int *blkid,
-	float *dist,
-	glm::vec3 *normal) const {
-	{ // rough check
-		if (!blank::Intersection(ray, Bounds(), M)) {
-			return false;
-		}
-	}
-
-	if (!blkid && !dist && !normal) {
-		return true;
-	}
-
+	int &blkid,
+	float &dist,
+	glm::vec3 &normal
+) const {
 	// TODO: should be possible to heavily optimize this
 	int id = 0;
-	int closest_id = -1;
-	float closest_dist = std::numeric_limits<float>::infinity();
-	glm::vec3 closest_normal(0, 1, 0);
+	blkid = -1;
+	dist = std::numeric_limits<float>::infinity();
 	for (int z = 0; z < Depth(); ++z) {
 		for (int y = 0; y < Height(); ++y) {
 			for (int x = 0; x < Width(); ++x, ++id) {
@@ -76,32 +72,23 @@ bool Chunk::Intersection(
 				}
 				float cur_dist;
 				glm::vec3 cur_norm;
-				Block::Pos pos(float(x) + 0.5f, float(y) + 0.5f, float(z) + 0.5f);
-				if (Type(blocks[id]).shape->Intersects(ray, glm::translate(M, pos), cur_dist, cur_norm)) {
-					if (cur_dist < closest_dist) {
-						closest_id = id;
-						closest_dist = cur_dist;
-						closest_normal = cur_norm;
+				if (Type(blocks[id]).shape->Intersects(ray, M * ToTransform(id), cur_dist, cur_norm)) {
+					if (cur_dist < dist) {
+						blkid = id;
+						dist = cur_dist;
+						normal = cur_norm;
 					}
 				}
 			}
 		}
 	}
 
-	if (closest_id < 0) {
+	if (blkid < 0) {
 		return false;
+	} else {
+		normal = glm::vec3(BlockAt(blkid).Transform() * glm::vec4(normal, 0.0f));
+		return true;
 	}
-
-	if (blkid) {
-		*blkid = closest_id;
-	}
-	if (dist) {
-		*dist = closest_dist;
-	}
-	if (normal) {
-		*normal = closest_normal;
-	}
-	return true;
 }
 
 void Chunk::Position(const Pos &pos) {
@@ -117,7 +104,6 @@ void Chunk::CheckUpdate() {
 	if (dirty) {
 		Update();
 	}
-	model.CheckUpdate();
 }
 
 void Chunk::Update() {
@@ -127,20 +113,54 @@ void Chunk::Update() {
 		vtx_count += shape->VertexCount();
 		idx_count += shape->VertexIndexCount();
 	}
-	model.Clear();
-	model.Reserve(vtx_count, idx_count);
+	buf.Clear();
+	buf.Reserve(vtx_count, idx_count);
 
 	Model::Index vtx_counter = 0;
 	for (size_t i = 0; i < Size(); ++i) {
+		if (Obstructed(i)) continue;
+
 		const BlockType &type = Type(blocks[i]);
-		type.FillModel(model, ToCoords(i), vtx_counter);
+		type.FillModel(buf, ToTransform(i), vtx_counter);
 		vtx_counter += type.shape->VertexCount();
 	}
 
-	model.Invalidate();
+	model.Update(buf);
 	dirty = false;
 }
 
+bool Chunk::Obstructed(int idx) const {
+	if (IsBorder(idx)) return false;
+
+	// not checking neighbor visibility here, so all
+	// invisible blocks must have their fill set to 6x false
+	// (the default, so should be okay)
+
+	const Block &right = blocks[idx + 1];
+	if (!Type(right).FaceFilled(right, Block::FACE_LEFT)) return false;
+
+	const Block &left = blocks[idx - 1];
+	if (!Type(left).FaceFilled(left, Block::FACE_RIGHT)) return false;
+
+	const Block &up = blocks[idx + Width()];
+	if (!Type(up).FaceFilled(up, Block::FACE_DOWN)) return false;
+
+	const Block &down = blocks[idx - Width()];
+	if (!Type(down).FaceFilled(down, Block::FACE_UP)) return false;
+
+	const Block &front = blocks[idx + Width() * Height()];
+	if (!Type(front).FaceFilled(front, Block::FACE_BACK)) return false;
+
+	const Block &back = blocks[idx - Width() * Height()];
+	if (!Type(back).FaceFilled(back, Block::FACE_FRONT)) return false;
+
+	return true;
+}
+
+glm::mat4 Chunk::ToTransform(int idx) const {
+	return glm::translate(glm::mat4(1.0f), ToCoords(idx)) * blocks[idx].Transform();
+}
+
 
 ChunkLoader::ChunkLoader(const BlockTypeRegistry &reg, const Generator &gen)
 : base(0, 0, 0)
@@ -186,6 +206,15 @@ void ChunkLoader::Generate(const Chunk::Pos &from, const Chunk::Pos &to) {
 					loaded.emplace_back(reg);
 					loaded.back().Position(pos);
 					gen(loaded.back());
+
+				//	orientation testing
+				//	for (int i = 0; i < Block::FACE_COUNT; ++i) {
+				//		for (int j = 0; j < Block::TURN_COUNT; ++j) {
+				//			loaded.back().BlockAt(512 * j + 2 * i) = Block(3 * (j + 1), Block::Face(i), Block::Turn(j));
+				//		}
+				//	}
+				//	loaded.back().Invalidate();
+				//	loaded.back().CheckUpdate();
 				} else {
 					to_generate.emplace_back(pos);
 				}