X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld%2Fchunk.cpp;h=fb4375599226226d3e80ddcf670935a77d78e3d7;hb=1bc2f230105ad6e1ee8d999ddc079cd85d244bf9;hp=cedc532aed726a838d2b9ad10b7ea04be16eafb5;hpb=4727825186798902f68df5b99a6a32f0ef618454;p=blank.git

diff --git a/src/world/chunk.cpp b/src/world/chunk.cpp
index cedc532..fb43755 100644
--- a/src/world/chunk.cpp
+++ b/src/world/chunk.cpp
@@ -84,6 +84,9 @@ struct SetNode {
 
 	const BlockType &GetType() const noexcept { return chunk->Type(Chunk::ToIndex(pos)); }
 
+	int EmitLevel() const noexcept { return GetType().luminosity; }
+	bool EmitsLight() const noexcept { return EmitLevel() > 0; }
+
 	bool HasNext(Block::Face face) noexcept {
 		const BlockType &type = GetType();
 		if (type.block_light && !type.luminosity) return false;
@@ -146,9 +149,13 @@ void work_dark() noexcept {
 		for (int face = 0; face < Block::FACE_COUNT; ++face) {
 			if (node.HasNext(Block::Face(face))) {
 				UnsetNode other = node.GetNext(Block::Face(face));
-				// TODO: if there a light source here with the same level this will err
 				if (other.Get() != 0 && other.Get() < node.level) {
-					other.Set(0);
+					if (other.EmitsLight()) {
+						other.Set(other.EmitLevel());
+						light_queue.emplace(other);
+					} else {
+						other.Set(0);
+					}
 					dark_queue.emplace(other);
 				} else {
 					light_queue.emplace(other);
@@ -359,7 +366,7 @@ bool Chunk::IsSurface(const RoughLocation::Fine &pos) const noexcept {
 
 bool Chunk::Intersection(
 	const Ray &ray,
-	const glm::mat4 &M,
+	const ExactLocation::Coarse &reference,
 	WorldCollision &coll
 ) noexcept {
 	int idx = 0;
@@ -375,7 +382,7 @@ bool Chunk::Intersection(
 				}
 				float cur_dist;
 				glm::vec3 cur_norm;
-				if (type.shape->Intersects(ray, M * ToTransform(RoughLocation::Fine(x, y, z), idx), cur_dist, cur_norm)) {
+				if (type.shape->Intersects(ray, ToTransform(reference, RoughLocation::Fine(x, y, z), idx), cur_dist, cur_norm)) {
 					if (cur_dist < coll.depth) {
 						coll.block = idx;
 						coll.depth = cur_dist;
@@ -407,14 +414,82 @@ bool Chunk::Intersection(
 	if (!blank::Intersection(box, Mbox, Bounds(), Mchunk, penetration, normal)) {
 		return false;
 	}
-	for (int idx = 0, z = 0; z < side; ++z) {
-		for (int y = 0; y < side; ++y) {
-			for (int x = 0; x < side; ++x, ++idx) {
+
+	// box's origin relative to the chunk
+	const glm::vec3 box_coords(Mbox[3] - Mchunk[3]);
+	const float box_rad = box.OriginRadius();
+
+	// assume a bounding radius of 2 for blocks
+	constexpr float block_rad = 2.0f;
+	const float bb_radius = box_rad + block_rad;
+
+	const RoughLocation::Fine begin(max(
+		RoughLocation::Fine(0),
+		RoughLocation::Fine(floor(box_coords - bb_radius))
+	));
+	const RoughLocation::Fine end(min(
+		RoughLocation::Fine(side - 1),
+		RoughLocation::Fine(ceil(box_coords + bb_radius))
+	) - 1);
+
+	for (RoughLocation::Fine pos(begin); pos.z < end.y; ++pos.z) {
+		for (pos.y = begin.y; pos.y < end.y; ++pos.y) {
+			for (pos.x = begin.x; pos.x < end.x; ++pos.x) {
+				int idx = ToIndex(pos);
+				const BlockType &type = Type(idx);
+				if (!type.collision || !type.shape) {
+					continue;
+				}
+				if (type.shape->Intersects(Mchunk * ToTransform(pos, idx), box, Mbox, penetration, normal)) {
+					col.emplace_back(this, idx, penetration, normal);
+					any = true;
+				}
+			}
+		}
+	}
+	return any;
+}
+
+bool Chunk::Intersection(
+	const Entity &entity,
+	const glm::mat4 &Mentity,
+	const glm::mat4 &Mchunk,
+	std::vector<WorldCollision> &col
+) noexcept {
+	// entity's origin relative to the chunk
+	const glm::vec3 entity_coords(Mentity[3] - Mchunk[3]);
+	const float ec_radius = entity.Radius() + Radius();
+
+	if (distance_squared(entity_coords, Center()) > ec_radius * ec_radius) {
+		return false;
+	}
+
+	bool any = false;
+	float penetration;
+	glm::vec3 normal;
+
+	// assume a bounding radius of 2 for blocks
+	constexpr float block_rad = 2.0f;
+	const float eb_radius = entity.Radius() + block_rad;
+
+	const RoughLocation::Fine begin(max(
+		RoughLocation::Fine(0),
+		RoughLocation::Fine(floor(entity_coords - eb_radius))
+	));
+	const RoughLocation::Fine end(min(
+		RoughLocation::Fine(side),
+		RoughLocation::Fine(ceil(entity_coords + eb_radius))
+	));
+
+	for (RoughLocation::Fine pos(begin); pos.z < end.z; ++pos.z) {
+		for (pos.y = begin.y; pos.y < end.y; ++pos.y) {
+			for (pos.x = begin.x; pos.x < end.x; ++pos.x) {
+				int idx = ToIndex(pos);
 				const BlockType &type = Type(idx);
 				if (!type.collision || !type.shape) {
 					continue;
 				}
-				if (type.shape->Intersects(Mchunk * ToTransform(RoughLocation::Fine(x, y, z), idx), box, Mbox, penetration, normal)) {
+				if (type.shape->Intersects(Mchunk * ToTransform(pos, idx), entity.Bounds(), Mentity, penetration, normal)) {
 					col.emplace_back(this, idx, penetration, normal);
 					any = true;
 				}
@@ -492,6 +567,10 @@ glm::mat4 Chunk::ToTransform(const RoughLocation::Fine &pos, int idx) const noex
 	return glm::translate(ToCoords(pos)) * BlockAt(idx).Transform();
 }
 
+glm::mat4 Chunk::ToTransform(const ExactLocation::Coarse &ref, const RoughLocation::Fine &pos, int idx) const noexcept {
+	return glm::translate(ExactLocation::Fine((position - ref) * ExactLocation::Extent()) + ToCoords(pos)) * BlockAt(idx).Transform();
+}
+
 
 BlockLookup::BlockLookup(Chunk *c, const RoughLocation::Fine &p) noexcept
 : chunk(c), pos(p) {