#include "world.hpp"
+#include <limits>
+#include <glm/gtx/transform.hpp>
+
namespace blank {
vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z );
vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z + 1);
- colors.insert(colors.end(), 6, glm::vec3(1.0f, 1.0f, 1.0f)); // front
- colors.insert(colors.end(), 6, glm::vec3(1.0f, 1.0f, 1.0f)); // back
- colors.insert(colors.end(), 6, glm::vec3(1.0f, 1.0f, 1.0f)); // top
- colors.insert(colors.end(), 6, glm::vec3(1.0f, 1.0f, 1.0f)); // bottom
- colors.insert(colors.end(), 6, glm::vec3(1.0f, 1.0f, 1.0f)); // left
- colors.insert(colors.end(), 6, glm::vec3(1.0f, 1.0f, 1.0f)); // right
+ colors.insert(colors.end(), 6 * 6, color);
normals.insert(normals.end(), 6, glm::vec3( 0.0f, 0.0f, 1.0f)); // front
normals.insert(normals.end(), 6, glm::vec3( 0.0f, 0.0f, -1.0f)); // back
normals.insert(normals.end(), 6, glm::vec3( 1.0f, 0.0f, 0.0f)); // right
}
+void BlockType::FillOutlineVBO(
+ std::vector<glm::vec3> &vertices,
+ std::vector<glm::vec3> &colors
+) const {
+ vertices = std::vector<glm::vec3>({
+ { 0.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 0.0f },
+ { 1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 0.0f },
+ { 1.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 0.0f },
+ { 0.0f, 1.0f, 0.0f }, { 0.0f, 0.0f, 0.0f },
+ { 0.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, 1.0f },
+ { 1.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 1.0f },
+ { 1.0f, 1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f },
+ { 0.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 1.0f },
+ { 0.0f, 0.0f, 1.0f }, { 1.0f, 0.0f, 1.0f },
+ { 1.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f },
+ { 1.0f, 1.0f, 1.0f }, { 0.0f, 1.0f, 1.0f },
+ { 0.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f },
+ });
+ colors.resize(24, outline_color);
+}
+
+
+BlockTypeRegistry::BlockTypeRegistry() {
+ Add(BlockType::DEFAULT);
+}
+
+int BlockTypeRegistry::Add(const BlockType &t) {
+ int id = types.size();
+ types.push_back(t);
+ types.back().id = id;
+ return id;
+}
+
Chunk::Chunk()
: blocks(Size())
, model()
+, transform(1.0f)
, dirty(false) {
}
+Chunk::Chunk(Chunk &&other)
+: blocks(std::move(other.blocks))
+, model(std::move(other.model))
+, transform(other.transform)
+, dirty(other.dirty) {
+
+}
+
+Chunk &Chunk::operator =(Chunk &&other) {
+ blocks = std::move(other.blocks);
+ model = std::move(other.model);
+ transform = other.transform;
+ dirty = other.dirty;
+ return *this;
+}
+
void Chunk::Draw() {
if (dirty) {
}
+bool Chunk::Intersection(
+ const Ray &ray,
+ const glm::mat4 &M,
+ int *blkid,
+ float *dist,
+ glm::vec3 *normal) const {
+ { // rough check
+ const AABB bb{{0, 0, 0}, {Width(), Height(), Depth()}};
+ if (!blank::Intersection(ray, bb, M)) {
+ return false;
+ }
+ }
+
+ if (!blkid && !dist && !normal) {
+ return true;
+ }
+
+ // 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);
+ for (int z = 0; z < Depth(); ++z) {
+ for (int y = 0; y < Height(); ++y) {
+ for (int x = 0; x < Width(); ++x, ++id) {
+ if (!blocks[id].type->visible) {
+ continue;
+ }
+ const AABB bb{{x, y, z}, {x+1, y+1, z+1}};
+ float cur_dist;
+ glm::vec3 cur_norm;
+ if (blank::Intersection(ray, bb, M, &cur_dist, &cur_norm)) {
+ if (cur_dist < closest_dist) {
+ closest_id = id;
+ closest_dist = cur_dist;
+ closest_normal = cur_norm;
+ }
+ }
+ }
+ }
+ }
+
+ if (closest_id < 0) {
+ return false;
+ }
+
+ if (blkid) {
+ *blkid = closest_id;
+ }
+ if (dist) {
+ *dist = closest_dist;
+ }
+ if (normal) {
+ *normal = closest_normal;
+ }
+ return true;
+}
+
+void Chunk::Position(const glm::vec3 &pos) {
+ position = pos;
+ transform = glm::translate(pos * Extent());
+}
+
+
int Chunk::VertexCount() const {
// TODO: query blocks as soon as type shapes are implemented
return Size() * 6 * 6;
dirty = false;
}
+
+World::World()
+: blockType()
+, chunks() {
+ blockType.Add(BlockType(true, glm::vec3(1, 1, 1)));
+ blockType.Add(BlockType(true, glm::vec3(1, 0, 0)));
+ blockType.Add(BlockType(true, glm::vec3(0, 1, 0)));
+ blockType.Add(BlockType(true, glm::vec3(0, 0, 1)));
+}
+
+
+void World::Generate() {
+ for (int z = -1; z < 2; ++z) {
+ for (int y = -1; y < 2; ++y) {
+ for (int x = -1; x < 2; ++x) {
+ Generate(glm::vec3(x, y, z));
+ }
+ }
+ }
+}
+
+Chunk &World::Generate(const glm::vec3 &pos) {
+ chunks.emplace_back();
+ Chunk &chunk = chunks.back();
+ chunk.Position(pos);
+ chunk.BlockAt(glm::vec3(0, 0, 0)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(0, 0, 1)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(1, 0, 0)) = Block(blockType[2]);
+ chunk.BlockAt(glm::vec3(1, 0, 1)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(2, 0, 0)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(2, 0, 1)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(3, 0, 0)) = Block(blockType[2]);
+ chunk.BlockAt(glm::vec3(3, 0, 1)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(2, 0, 2)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(2, 0, 3)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(3, 0, 2)) = Block(blockType[2]);
+ chunk.BlockAt(glm::vec3(3, 0, 3)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(1, 1, 0)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(1, 1, 1)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(2, 1, 1)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(2, 2, 1)) = Block(blockType[2]);
+ chunk.Invalidate();
+ return chunk;
+}
+
+bool World::Intersection(
+ const Ray &ray,
+ const glm::mat4 &M,
+ Chunk **chunk,
+ int *blkid,
+ float *dist,
+ glm::vec3 *normal) {
+ Chunk *closest_chunk = nullptr;
+ int closest_blkid = -1;
+ float closest_dist = std::numeric_limits<float>::infinity();
+ glm::vec3 closest_normal;
+
+ for (Chunk &cur_chunk : chunks) {
+ int cur_blkid;
+ float cur_dist;
+ glm::vec3 cur_normal;
+ if (cur_chunk.Intersection(ray, M * cur_chunk.Transform(), &cur_blkid, &cur_dist, &cur_normal)) {
+ if (cur_dist < closest_dist) {
+ closest_chunk = &cur_chunk;
+ closest_blkid = cur_blkid;
+ closest_dist = cur_dist;
+ closest_normal = cur_normal;
+ }
+ }
+ }
+
+ if (chunk) {
+ *chunk = closest_chunk;
+ }
+ if (blkid) {
+ *blkid = closest_blkid;
+ }
+ if (dist) {
+ *dist = closest_dist;
+ }
+ if (normal) {
+ *normal = closest_normal;
+ }
+ return closest_chunk;
+}
+
+
+Chunk &World::Next(const Chunk &to, const glm::vec3 &dir) {
+ const glm::vec3 tgt_pos = to.Position() + dir;
+ for (Chunk &chunk : chunks) {
+ if (chunk.Position() == tgt_pos) {
+ return chunk;
+ }
+ }
+ return Generate(tgt_pos);
+}
+
}
projects / blank.git / blobdiff