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https://github.com/zhenyan121/Cubed.git
synced 2026-08-08 17:57:02 +08:00
refactor: renderer (#29)
* refactor(render): move render files to subdirectory, add RAII vertex buffer/array classes * refactor(render): encapsulate OpenGL textures into Texture class * refactor(texture): encapsulate textures with unique_ptr and bind methods Replace raw GLuint framebuffer textures with std::unique_ptr<Texture>. Update TextureManager to return const Texture* instead of GLuint. Use Texture::bind() for active texture binding. Add RGBA16F and RGB formats. Add texture parameter methods. Update destructors accordingly. * refactor(render): use Texture, VertexBuffer, VertexArray classes * feat(render): add FrameBuffer class to encapsulate framebuffer operations * refactor(render): extract world rendering into WorldRenderer class * refactor(render): rename projection and model matrix members for clarity * chore(render): remove unused matrix members * fix(texture-manager): correct delet_texture typo and add null checks for textures
This commit is contained in:
zhenyan121
374
src/render/player_renderer.cpp
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374
src/render/player_renderer.cpp
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#include "Cubed/render/player_renderer.hpp"
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#include "Cubed/camera.hpp"
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#include "Cubed/gameplay/client_world.hpp"
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#include "Cubed/primitive_data.hpp"
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#include "Cubed/render/renderer.hpp"
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#include "Cubed/texture_manager.hpp"
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#include <glm/glm.hpp>
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namespace {
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struct Cuboid {
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glm::vec3 offset;
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glm::vec3 size;
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};
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constexpr Cuboid PLAYER_MODEL[] = {
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// Head
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{{0.25f, 1.50f, 0.25f}, {0.50f, 0.50f, 0.50f}},
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// Body
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{{0.25f, 0.75f, 0.375f}, {0.50f, 0.75f, 0.25f}},
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// Left Arm
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{{0.00f, 0.75f, 0.375f}, {0.25f, 0.75f, 0.25f}},
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// Right Arm
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{{0.75f, 0.75f, 0.375f}, {0.25f, 0.75f, 0.25f}},
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// Left Leg
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{{0.25f, 0.00f, 0.375f}, {0.25f, 0.75f, 0.25f}},
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// Right Leg
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{{0.50f, 0.00f, 0.375f}, {0.25f, 0.75f, 0.25f}},
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};
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struct UVRect {
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int x;
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int y;
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int w;
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int h;
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};
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using FaceUV = std::array<UVRect, 6>;
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constexpr FaceUV HEAD_UV = {{
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{0, 0, 8, 8}, // front
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{8, 0, 8, 8}, // right
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{16, 0, 8, 8}, // back
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{24, 0, 8, 8}, // left
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{32, 0, 8, 8}, // top
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{40, 0, 8, 8}, // bottom
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}};
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constexpr FaceUV BODY_UV = {{
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{0, 8, 8, 12},
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{8, 8, 4, 12},
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{12, 8, 8, 12},
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{20, 8, 4, 12},
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{24, 8, 8, 4},
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{32, 8, 8, 4},
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}};
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constexpr FaceUV LEFT_ARM_UV = {{
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{0, 20, 4, 12},
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{4, 20, 4, 12},
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{8, 20, 4, 12},
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{12, 20, 4, 12},
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{16, 20, 4, 4},
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{20, 20, 4, 4},
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}};
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constexpr FaceUV RIGHT_ARM_UV = {{
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{24, 20, 4, 12},
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{28, 20, 4, 12},
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{32, 20, 4, 12},
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{36, 20, 4, 12},
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{40, 20, 4, 4},
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{44, 20, 4, 4},
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}};
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constexpr FaceUV LEFT_LEG_UV = {{
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{0, 32, 4, 12}, // front
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{4, 32, 4, 12}, // right
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{8, 32, 4, 12}, // back
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{12, 32, 4, 12}, // left
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{16, 32, 4, 4}, // top
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{20, 32, 4, 4}, // bottom
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}};
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constexpr FaceUV RIGHT_LEG_UV = {{
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{24, 32, 4, 12}, // front
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{28, 32, 4, 12}, // right
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{32, 32, 4, 12}, // back
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{36, 32, 4, 12}, // left
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{40, 32, 4, 4}, // top
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{44, 32, 4, 4}, // bottom
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}};
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constexpr std::array<std::array<UVRect, 6>,
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Cubed::PlayerRenderer::BODY_PART_NUM>
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PLAYER_TEX = {{{HEAD_UV},
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{BODY_UV},
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{LEFT_ARM_UV},
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{RIGHT_ARM_UV},
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{LEFT_LEG_UV},
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{RIGHT_LEG_UV}}};
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constexpr glm::vec3 HEAD_PIVOT{0.5, 1.5, 0.5};
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constexpr glm::vec3 LEFT_ARM_PIVOT{0.125f, 1.50f, 0.50f};
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constexpr glm::vec3 RIGHT_ARM_PIVOT{0.875, 1.50, 0.50};
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constexpr glm::vec3 LEFT_LEG_PIVOT{0.375, 0.75, 0.50};
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constexpr glm::vec3 RIGHT_LEG_PIVOT{0.625, 0.75, 0.50};
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} // namespace
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namespace Cubed {
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PlayerRenderer::PlayerRenderer(Renderer& renderer) : m_renderer(renderer) {}
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PlayerRenderer::~PlayerRenderer() {
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if (!m_inited) {
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return;
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}
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glDeleteBuffers(BODY_PART_NUM, m_vbo.data());
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glDeleteVertexArrays(BODY_PART_NUM, m_vao.data());
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}
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void PlayerRenderer::init() {
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for (int i = 0; i < 6; i++) {
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const auto& part = PLAYER_MODEL[i];
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for (int face = 0; face < 6; ++face) {
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const auto& rect = PLAYER_TEX[i][face];
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for (int vex = 0; vex < 6; ++vex) {
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glm::vec3 p{VERTICES_POS[face][vex][0],
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VERTICES_POS[face][vex][1],
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VERTICES_POS[face][vex][2]};
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float su = TEX_COORDS[face][vex][0];
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float sv = TEX_COORDS[face][vex][1];
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if (face == 2) {
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float t = su;
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su = sv;
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sv = 1.0f - t;
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}
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float u = rect.x + su * rect.w;
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float v = rect.y + sv * rect.h;
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u /= 64.0f;
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v /= 64.0f;
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p *= part.size;
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p += part.offset;
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m_vertices[i].emplace_back(
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p.x, p.y, p.z, u, v, NORMALS[face][vex][0],
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NORMALS[face][vex][1], NORMALS[face][vex][2],
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TANGENTS[face][vex][0], TANGENTS[face][vex][1],
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TANGENTS[face][vex][2]);
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}
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}
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}
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glGenVertexArrays(BODY_PART_NUM, m_vao.data());
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glGenBuffers(BODY_PART_NUM, m_vbo.data());
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for (int i = 0; i < BODY_PART_NUM; i++) {
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glBindVertexArray(m_vao[i]);
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glBindBuffer(GL_ARRAY_BUFFER, m_vbo[i]);
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glBufferData(GL_ARRAY_BUFFER,
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m_vertices[i].size() * sizeof(PlayerVertex),
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m_vertices[i].data(), GL_STATIC_DRAW);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(PlayerVertex),
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(void*)0);
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glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(PlayerVertex),
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(void*)offsetof(PlayerVertex, s));
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glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, sizeof(PlayerVertex),
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(void*)offsetof(PlayerVertex, nx));
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glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, sizeof(PlayerVertex),
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(void*)offsetof(PlayerVertex, tx));
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glEnableVertexAttribArray(0);
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glEnableVertexAttribArray(1);
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glEnableVertexAttribArray(2);
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glEnableVertexAttribArray(3);
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glBindVertexArray(0);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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}
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m_inited = true;
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}
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void PlayerRenderer::render(const Shader& shader) {
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if (!m_inited) {
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Logger::error("Player Renderer isn't init");
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return;
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}
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auto& m_camera = m_renderer.camera();
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auto& m_world = m_renderer.world();
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auto& m_player = m_world.get_player();
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glm::mat4 m_v_mat = m_camera.get_camera_lookat();
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glm::mat4 m_p_mat = m_renderer.world_proj_matrix();
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auto& players = m_world.render_player_data();
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shader.set_loc("proj_matrix", m_p_mat);
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for (auto& player : players) {
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if (player.uuid == m_player.get_uuid()) {
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if (m_camera.is_first_person()) {
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continue;
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}
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}
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glm::mat4 model(1.0f);
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model = glm::translate(model, player.render_pos);
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// model = glm::translate(model, glm::vec3(0.5f, 0.0f, 0.5f));
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// glm::rotate(..., +yaw, Y) follows the OpenGL right‑handed coordinate
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// system, where a positive angle means counter‑clockwise rotation.
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// Therefore the model must use -yaw to align with the direction of
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// m_front.
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model = glm::rotate(model, glm::radians(-player.yaw + 180.0f),
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glm::vec3(0, 1, 0));
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model = glm::translate(model, glm::vec3(-0.5f, 0.0f, -0.5f));
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m_renderer.texture_mamger().get_skin()->bind(1);
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auto make_rotated = [&](glm::vec3 pivot, float angle) {
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glm::mat4 mat = model;
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mat = glm::translate(mat, pivot);
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mat = glm::rotate(mat, angle, glm::vec3(1, 0, 0));
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mat = glm::translate(mat, -pivot);
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return mat;
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};
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for (int i = 0; i < BODY_PART_NUM; i++) {
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switch (i) {
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case 0: {
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glm::mat4 head_model = model;
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head_model = glm::translate(head_model, HEAD_PIVOT);
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head_model =
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glm::rotate(head_model, glm::radians(-player.pitch),
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glm::vec3(1, 0, 0));
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head_model = glm::translate(head_model, -HEAD_PIVOT);
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glm::mat4 head_mv = m_v_mat * head_model;
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shader.set_loc("norm_matrix",
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glm::transpose(glm::inverse(head_mv)));
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shader.set_loc("modelMatrix", head_model);
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shader.set_loc("mv_matrix", head_mv);
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} break;
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case 1: {
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glm::mat4 mv_mat = m_v_mat * model;
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shader.set_loc("norm_matrix",
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glm::transpose(glm::inverse(mv_mat)));
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shader.set_loc("modelMatrix", model);
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shader.set_loc("mv_matrix", mv_mat);
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} break;
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case 2: { // left arm
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glm::mat4 model_mat =
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make_rotated(LEFT_ARM_PIVOT, player.angle);
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glm::mat4 mv_mat = m_v_mat * model_mat;
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shader.set_loc("norm_matrix",
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glm::transpose(glm::inverse(mv_mat)));
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shader.set_loc("modelMatrix", model_mat);
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shader.set_loc("mv_matrix", mv_mat);
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} break;
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case 3: { // right arm
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glm::mat4 model_mat =
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make_rotated(RIGHT_ARM_PIVOT, -player.angle);
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glm::mat4 mv_mat = m_v_mat * model_mat;
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shader.set_loc("norm_matrix",
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glm::transpose(glm::inverse(mv_mat)));
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shader.set_loc("modelMatrix", model_mat);
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shader.set_loc("mv_matrix", mv_mat);
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} break;
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case 4: { // left leg
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glm::mat4 model_mat =
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make_rotated(LEFT_LEG_PIVOT, -player.angle);
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glm::mat4 mv_mat = m_v_mat * model_mat;
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shader.set_loc("norm_matrix",
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glm::transpose(glm::inverse(mv_mat)));
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shader.set_loc("modelMatrix", model_mat);
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shader.set_loc("mv_matrix", mv_mat);
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} break;
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case 5: { // right leg
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glm::mat4 model_mat =
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make_rotated(RIGHT_LEG_PIVOT, player.angle);
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glm::mat4 mv_mat = m_v_mat * model_mat;
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shader.set_loc("norm_matrix",
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glm::transpose(glm::inverse(mv_mat)));
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shader.set_loc("modelMatrix", model_mat);
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shader.set_loc("mv_matrix", mv_mat);
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} break;
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}
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glBindVertexArray(m_vao[i]);
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glEnable(GL_DEPTH_TEST);
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glDrawArrays(GL_TRIANGLES, 0, m_vertices[i].size());
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}
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}
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}
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void PlayerRenderer::shadow_render(const Shader& shader,
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glm::mat4& light_matrix) {
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if (!m_inited) {
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Logger::error("Player Renderer isn't init");
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return;
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}
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shader.use();
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shader.set_loc("lightSpaceMatrix", light_matrix);
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auto& m_world = m_renderer.world();
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auto& players = m_world.render_player_data();
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for (auto& player : players) {
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glm::mat4 model(1.0f);
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model = glm::translate(model, player.render_pos);
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// model = glm::translate(model, glm::vec3(0.5f, 0.0f, 0.5f));
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model = glm::rotate(model, glm::radians(-player.yaw + 180.0f),
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glm::vec3(0, 1, 0));
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model = glm::translate(model, glm::vec3(-0.5f, 0.0f, -0.5f));
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auto make_rotated = [&](glm::vec3 pivot, float angle) {
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glm::mat4 mat = model;
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mat = glm::translate(mat, pivot);
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mat = glm::rotate(mat, angle, glm::vec3(1, 0, 0));
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mat = glm::translate(mat, -pivot);
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return mat;
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};
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for (int i = 0; i < BODY_PART_NUM; i++) {
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switch (i) {
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case 0: {
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glm::mat4 head_model = model;
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head_model = glm::translate(head_model, HEAD_PIVOT);
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head_model =
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glm::rotate(head_model, glm::radians(-player.pitch),
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glm::vec3(1, 0, 0));
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head_model = glm::translate(head_model, -HEAD_PIVOT);
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shader.set_loc("modelMatrix", head_model);
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} break;
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case 1: {
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shader.set_loc("modelMatrix", model);
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} break;
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case 2: { // left arm
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shader.set_loc("modelMatrix",
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make_rotated(LEFT_ARM_PIVOT, player.angle));
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} break;
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case 3: { // right arm
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shader.set_loc("modelMatrix",
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make_rotated(RIGHT_ARM_PIVOT, -player.angle));
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} break;
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case 4: { // left leg
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shader.set_loc("modelMatrix",
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make_rotated(LEFT_LEG_PIVOT, -player.angle));
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} break;
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case 5: { // right leg
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shader.set_loc("modelMatrix",
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make_rotated(RIGHT_LEG_PIVOT, player.angle));
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} break;
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}
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glBindVertexArray(m_vao[i]);
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glEnable(GL_DEPTH_TEST);
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glDrawArrays(GL_TRIANGLES, 0, m_vertices[i].size());
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}
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}
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}
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} // namespace Cubed
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