84 lines
3.8 KiB
C++
84 lines
3.8 KiB
C++
#include "chunk.h"
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Chunk::Chunk() {}
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Chunk::~Chunk() {}
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void Chunk::RemoveBlock(int x, int y, int z) {
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m_blocks.Set(x, y, z, BTYPE_AIR);
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m_isDirty = true;
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}
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void Chunk::SetBlock(int x, int y, int z, BlockType type) {
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m_blocks.Set(x, y, z, type);
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m_isDirty = true;
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}
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BlockType Chunk::GetBlock(int x, int y, int z) { return m_blocks.Get(x, y, z); }
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void Chunk::Update() {
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// Update mesh
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if (m_isDirty) {
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int maxVertexCount = (CHUNK_SIZE_X * CHUNK_SIZE_Y * CHUNK_SIZE_Z) * (6 * 4);
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VertexBuffer::VertexData* vd = new VertexBuffer::VertexData[maxVertexCount];
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int count = 0;
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for (int x = 0; x < CHUNK_SIZE_X; ++x) {
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for (int z = 0; z < CHUNK_SIZE_Z; ++z) {
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for (int y = 0; y < CHUNK_SIZE_Y; ++y) {
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if (count > USHRT_MAX)
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break;
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BlockType bt = GetBlock(x, y, z);
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if (bt != BTYPE_AIR) {
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AddBlockToMesh(vd, count, bt, x, y, z);
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}
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}
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}
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}
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if (count > USHRT_MAX) {
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count = USHRT_MAX;
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std::cout << "[ Chunk :: Update ] Chunk data truncaned , too much vertices to have a 16 bit index " << std::endl;
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}
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m_vertexBuffer.SetMeshData(vd, count);
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delete[] vd;
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}
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m_isDirty = false;
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}
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void Chunk::AddBlockToMesh(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z) {
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vd[count++] = VertexBuffer::VertexData(x - .5f, y - .5f, z + .5f, 1.f, 1.f, 1.f, 0.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y - .5f, z + .5f, 1.f, 1.f, 1.f, 1.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y + .5f, z + .5f, 1.f, 1.f, 1.f, 1.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y + .5f, z + .5f, 1.f, 1.f, 1.f, 0.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y + .5f, z - .5f, 1.f, 1.f, 1.f, 0.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y + .5f, z - .5f, 1.f, 1.f, 1.f, 1.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y - .5f, z - .5f, 1.f, 1.f, 1.f, 1.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y - .5f, z - .5f, 1.f, 1.f, 1.f, 0.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y + .5f, z + .5f, 1.f, 1.f, 1.f, 0.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y + .5f, z - .5f, 1.f, 1.f, 1.f, 1.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y - .5f, z - .5f, 1.f, 1.f, 1.f, 1.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y - .5f, z + .5f, 1.f, 1.f, 1.f, 0.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y - .5f, z - .5f, 1.f, 1.f, 1.f, 0.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y + .5f, z - .5f, 1.f, 1.f, 1.f, 0.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y + .5f, z + .5f, 1.f, 1.f, 1.f, 1.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y - .5f, z + .5f, 1.f, 1.f, 1.f, 1.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y + .5f, z - .5f, 1.f, 1.f, 1.f, 0.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y + .5f, z + .5f, 1.f, 1.f, 1.f, 0.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y + .5f, z + .5f, 1.f, 1.f, 1.f, 1.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y + .5f, z - .5f, 1.f, 1.f, 1.f, 1.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y - .5f, z + .5f, 1.f, 1.f, 1.f, 0.f, 0.f);
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vd[count++] = VertexBuffer::VertexData(x - .5f, y - .5f, z - .5f, 1.f, 1.f, 1.f, 0.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y - .5f, z - .5f, 1.f, 1.f, 1.f, 1.f, 1.f);
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vd[count++] = VertexBuffer::VertexData(x + .5f, y - .5f, z + .5f, 1.f, 1.f, 1.f, 1.f, 0.f);
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}
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void Chunk::Render() const { m_vertexBuffer.Render(); }
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bool Chunk::IsDirty() const { return m_isDirty; }
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