Move game sources into src subdirectory

1 files changed, 192 insertions, 0 deletions

diff --git a/src/game/shared/voxel_registry.cc b/src/game/shared/voxel_registry.cc
new file mode 100644
index 0000000..cb3c724
--- /dev/null
+++ b/src/game/shared/voxel_registry.cc
@@ -0,0 +1,192 @@
+#include "shared/pch.hh"
+
+#include "shared/voxel_registry.hh"
+
+#include "core/crc64.hh"
+
+std::unordered_map<std::string, VoxelInfoBuilder> voxel_registry::builders = {};
+std::unordered_map<std::string, voxel_id> voxel_registry::names = {};
+std::vector<std::shared_ptr<VoxelInfo>> voxel_registry::voxels = {};
+
+VoxelInfoBuilder::VoxelInfoBuilder(const char* name, voxel_type type, bool animated, bool blending)
+{
+    prototype.name = name;
+    prototype.type = type;
+    prototype.animated = animated;
+    prototype.blending = blending;
+
+    switch(type) {
+        case voxel_type::CUBE:
+            prototype.textures.resize(static_cast<std::size_t>(voxel_face::CUBE__NR));
+            break;
+        case voxel_type::CROSS:
+            prototype.textures.resize(static_cast<std::size_t>(voxel_face::CROSS__NR));
+            break;
+        case voxel_type::MODEL:
+            // Custom models should use a different texture
+            // resource management that is not a voxel atlas
+            // TODO: actually implement custom models lol
+            prototype.textures.resize(0);
+            break;
+        default:
+            // Something really bad should happen if we end up here.
+            // The outside code would static_cast an int to VoxelType
+            // and possibly fuck a lot of things up to cause this
+            spdlog::critical("voxel_registry: {}: unknown voxel type {}", name, static_cast<int>(type));
+            std::terminate();
+    }
+
+    // Physics properties
+    prototype.touch_type = voxel_touch::SOLID;
+    prototype.touch_values = glm::fvec3(0.0f, 0.0f, 0.0f);
+    prototype.surface = voxel_surface::DEFAULT;
+
+    // Things set in future by item_def
+    prototype.item_pick = NULL_ITEM_ID;
+}
+
+VoxelInfoBuilder& VoxelInfoBuilder::add_texture_default(const char* texture)
+{
+    default_texture.paths.push_back(texture);
+    return *this;
+}
+
+VoxelInfoBuilder& VoxelInfoBuilder::add_texture(voxel_face face, const char* texture)
+{
+    const auto index = static_cast<std::size_t>(face);
+    prototype.textures[index].paths.push_back(texture);
+    return *this;
+}
+
+VoxelInfoBuilder& VoxelInfoBuilder::set_touch(voxel_touch type, const glm::fvec3& values)
+{
+    prototype.touch_type = type;
+    prototype.touch_values = values;
+    return *this;
+}
+
+VoxelInfoBuilder& VoxelInfoBuilder::set_surface(voxel_surface surface)
+{
+    prototype.surface = surface;
+    return *this;
+}
+
+voxel_id VoxelInfoBuilder::build(void) const
+{
+    const auto it = voxel_registry::names.find(prototype.name);
+
+    if(it != voxel_registry::names.cend()) {
+        spdlog::warn("voxel_registry: cannot build {}: name already present", prototype.name);
+        return it->second;
+    }
+
+    std::size_t state_count;
+
+    switch(prototype.type) {
+        case voxel_type::CUBE:
+        case voxel_type::CROSS:
+        case voxel_type::MODEL:
+            state_count = 1;
+            break;
+        default:
+            // Something really bad should happen if we end up here.
+            // The outside code would static_cast an int to VoxelType
+            // and possibly fuck a lot of things up to cause this
+            spdlog::critical("voxel_registry: {}: unknown voxel type {}", prototype.name, static_cast<int>(prototype.type));
+            std::terminate();
+    }
+
+    if((voxel_registry::voxels.size() + state_count) >= MAX_VOXEL_ID) {
+        spdlog::critical("voxel_registry: voxel registry overflow");
+        std::terminate();
+    }
+
+    auto new_info = std::make_shared<VoxelInfo>();
+    new_info->name = prototype.name;
+    new_info->type = prototype.type;
+    new_info->animated = prototype.animated;
+    new_info->blending = prototype.blending;
+
+    new_info->textures.resize(prototype.textures.size());
+
+    for(std::size_t i = 0; i < prototype.textures.size(); ++i) {
+        if(prototype.textures[i].paths.empty()) {
+            new_info->textures[i].paths = default_texture.paths;
+            new_info->textures[i].cached_offset = SIZE_MAX;
+            new_info->textures[i].cached_plane = SIZE_MAX;
+        } else {
+            new_info->textures[i].paths = prototype.textures[i].paths;
+            new_info->textures[i].cached_offset = SIZE_MAX;
+            new_info->textures[i].cached_plane = SIZE_MAX;
+        }
+    }
+
+    // Physics properties
+    new_info->touch_type = prototype.touch_type;
+    new_info->touch_values = prototype.touch_values;
+    new_info->surface = prototype.surface;
+
+    // Things set in future by item_def
+    new_info->item_pick = prototype.item_pick;
+
+    // Base voxel identifier offset
+    new_info->base_voxel = voxel_registry::voxels.size() + 1;
+
+    for(std::size_t i = 0; i < state_count; ++i)
+        voxel_registry::voxels.push_back(new_info);
+    voxel_registry::names.insert_or_assign(new_info->name, new_info->base_voxel);
+
+    return new_info->base_voxel;
+}
+
+VoxelInfoBuilder& voxel_registry::construct(const char* name, voxel_type type, bool animated, bool blending)
+{
+    const auto it = voxel_registry::builders.find(name);
+
+    if(it != voxel_registry::builders.cend()) {
+        return it->second;
+    } else {
+        return voxel_registry::builders.emplace(name, VoxelInfoBuilder(name, type, animated, blending)).first->second;
+    }
+}
+
+VoxelInfo* voxel_registry::find(const char* name)
+{
+    const auto it = voxel_registry::names.find(name);
+
+    if(it != voxel_registry::names.cend()) {
+        return voxel_registry::find(it->second);
+    } else {
+        return nullptr;
+    }
+}
+
+VoxelInfo* voxel_registry::find(const voxel_id voxel)
+{
+    if((voxel != NULL_VOXEL_ID) && (voxel <= voxel_registry::voxels.size())) {
+        return voxel_registry::voxels[voxel - 1].get();
+    } else {
+        return nullptr;
+    }
+}
+
+void voxel_registry::purge(void)
+{
+    voxel_registry::builders.clear();
+    voxel_registry::names.clear();
+    voxel_registry::voxels.clear();
+}
+
+std::uint64_t voxel_registry::calcualte_checksum(void)
+{
+    std::uint64_t result = 0;
+
+    for(const std::shared_ptr<VoxelInfo>& info : voxel_registry::voxels) {
+        result = crc64::get(info->name, result);
+        result += static_cast<std::uint64_t>(info->type);
+        result += static_cast<std::uint64_t>(info->base_voxel);
+        result += info->blending ? 256 : 1;
+    }
+
+    return result;
+}