512 lines
12 KiB
C
512 lines
12 KiB
C
static mesh_t
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create_mesh(uint16_t index_count, uint16_t* indices, uint16_t vertex_count, vertex_t* vertices);
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static mesh_t
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load_mesh(SDL_RWops* ops);
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static material_t
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create_material(uint16_t width, uint16_t height, uint8_t channel_count, uint8_t* data);
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static material_t
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load_material(SDL_RWops* ops);
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static sound_t
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load_sound(SDL_RWops* ops);
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static audio_source_t
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load_audio_source(SDL_RWops* ops);
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static transform_t
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load_transform(SDL_RWops* ops);
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static renderable_t
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load_renderable(SDL_RWops* ops);
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static box_collider_t
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load_collider(SDL_RWops* ops);
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static point_light_t
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load_light(SDL_RWops* ops);
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void
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load_data1(const char* path)
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{
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LOG_DEBUG("Loading %s", path);
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SDL_RWops* ops = SDL_RWFromFile(path, "rb");
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if (ops == NULL)
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{
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LOG_ERROR("Error opening data file %s: %s", path, SDL_GetError());
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exit(EXIT_FAILURE);
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}
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{
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char magic[4];
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SDL_RWread(ops, magic, sizeof(magic), 1);
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if (magic[0] != 'A' || magic[1] != 'J' || magic[2] != 'M' || magic[3] != '\0') {
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LOG_ERROR("Data file %s has an invalid format", path);
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exit(EXIT_FAILURE);
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}
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}
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// NOTE: All printed counts are decremented by 1 to account for the first value being a null item
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_ASSERT(count < MAX_TRANSFORM_COUNT, "Too many transforms");
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LOG_DEBUG("Load %d transforms", count-1);
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for (int i = 0; i < count; i++)
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{
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transform_t transform = load_transform(ops);
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insert_transform(transform);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d meshes", count-1);
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LOG_ASSERT(count < MAX_MESH_COUNT, "Too many meshes");
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for (int i = 0; i < count; i++)
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{
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mesh_t mesh = load_mesh(ops);
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insert_mesh(mesh);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d materials", count-1);
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LOG_ASSERT(count < MAX_MATERIAL_COUNT, "Too many materials");
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for (int i = 0; i < count; i++)
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{
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material_t material = load_material(ops);
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insert_material(material);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d cameras", count-1);
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LOG_ASSERT(count < MAX_CAMERA_COUNT, "Too many cameras");
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for (int i = 0; i < count; i++)
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{
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uint16_t name_length;
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SDL_RWread(ops, &name_length, sizeof(name_length), 1);
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char* name = scratch_mem_alloc(name_length, sizeof(*name));
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SDL_RWread(ops, name, sizeof(*name), name_length);
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LOG_ASSERT(name_length < MAX_NAME_LENGTH, "Name of camera is too long: %s", name);
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handle_t transform;
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SDL_RWread(ops, &transform, sizeof(transform), 1);
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camera_t camera = camera_create(transform);
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strncpy(camera.name, name, name_length);
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insert_camera(camera);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d renderables", count-1);
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LOG_ASSERT(count < MAX_RENDERABLE_COUNT, "Too many renderables");
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for (int i = 0; i < count; i++)
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{
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renderable_t renderable = load_renderable(ops);
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insert_renderable(renderable);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d colliders", count-1);
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LOG_ASSERT(count < MAX_COLLIDER_COUNT, "Too many colliders");
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for (int i = 0; i < count; i++)
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{
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box_collider_t collider = load_collider(ops);
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insert_collider(collider);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d lights", count-1);
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LOG_ASSERT(count < MAX_LIGHT_COUNT, "Too many lights");
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for (int i = 0; i < count; i++)
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{
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point_light_t light = load_light(ops);
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insert_light(light);
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}
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}
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int ret = SDL_RWclose(ops);
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if (ret != 0) {
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LOG_ERROR("Error closing file %s: %s", path, SDL_GetError());
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}
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}
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void
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load_data2(const char* path)
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{
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LOG_DEBUG("Loading %s", path);
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SDL_RWops* ops = SDL_RWFromFile(path, "rb");
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if (ops == NULL)
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{
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LOG_ERROR("Error opening data file %s: %s", path, SDL_GetError());
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exit(EXIT_FAILURE);
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}
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{
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char magic[4];
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SDL_RWread(ops, magic, sizeof(magic), 1);
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if (magic[0] != 'A' || magic[1] != 'J' || magic[2] != 'M' || magic[3] != '\0') {
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LOG_ERROR("Data file %s has an invalid format", path);
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exit(EXIT_FAILURE);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d sounds", count-1);
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LOG_ASSERT(count < MAX_SOUND_COUNT, "Too many sounds");
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for (int i = 0; i < count; i++)
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{
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sound_t sound = load_sound(ops);
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insert_sound(sound);
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}
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}
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{
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uint16_t count;
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SDL_RWread(ops, &count, sizeof(count), 1);
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LOG_DEBUG("Load %d audio sources", count-1);
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LOG_ASSERT(count < MAX_AUDIO_SOURCE_COUNT, "Too many audio sources");
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for (int i = 0; i < count; i++)
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{
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audio_source_t source = load_audio_source(ops);
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insert_audio_source(source);
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}
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}
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int ret = SDL_RWclose(ops);
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if (ret != 0) {
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LOG_ERROR("Error closing file %s: %s", path, SDL_GetError());
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}
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}
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static mesh_t
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create_mesh(uint16_t index_count, uint16_t* indices, uint16_t vertex_count, vertex_t* vertices)
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{
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GLuint ebo;
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glGenBuffers(1, &ebo);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
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glBufferData(
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GL_ELEMENT_ARRAY_BUFFER,
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index_count * sizeof(*indices),
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indices,
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GL_STATIC_DRAW);
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GLuint vbo;
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glGenBuffers(1, &vbo);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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glBufferData(
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GL_ARRAY_BUFFER,
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vertex_count * sizeof(*vertices),
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vertices,
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GL_STATIC_DRAW);
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GLuint vao;
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glGenVertexArrays(1, &vao);
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glBindVertexArray(vao);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
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glEnableVertexAttribArray(0);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(struct vertex), (void*)offsetof(struct vertex, position));
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glEnableVertexAttribArray(1);
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glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(struct vertex), (void*)offsetof(struct vertex, normal));
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glEnableVertexAttribArray(2);
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glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(struct vertex), (void*)offsetof(struct vertex, texcoord));
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glBindVertexArray(0);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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mesh_t result = {
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.vao = vao,
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.vbo = vbo,
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.ebo = ebo,
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.index_count = index_count};
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return result;
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}
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static mesh_t
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load_mesh(SDL_RWops* ops)
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{
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uint16_t name_length;
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SDL_RWread(ops, &name_length, sizeof(name_length), 1);
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char* name = scratch_mem_alloc(name_length, sizeof(*name));
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SDL_RWread(ops, name, sizeof(*name), name_length);
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LOG_ASSERT(name_length < MAX_NAME_LENGTH, "Name of mesh is too long: %s", name);
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uint16_t index_count;
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SDL_RWread(ops, &index_count, sizeof(index_count), 1);
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uint16_t* indices = scratch_mem_alloc(index_count, sizeof(*indices));
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SDL_RWread(ops, indices, sizeof(*indices), index_count);
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uint16_t vertex_count;
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SDL_RWread(ops, &vertex_count, sizeof(vertex_count), 1);
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vertex_t* vertices = scratch_mem_alloc(vertex_count, sizeof(*vertices));
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SDL_RWread(ops, vertices, sizeof(*vertices), vertex_count);
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mesh_t result = create_mesh(index_count, indices, vertex_count, vertices);
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strncpy(result.name, name, name_length);
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return result;
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}
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static material_t
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create_material(uint16_t width, uint16_t height, uint8_t channel_count, uint8_t* data)
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{
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GLuint format = (channel_count == 3) ? GL_RGB : GL_RGBA;
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GLuint texture;
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glGenTextures(1, &texture);
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glBindTexture(GL_TEXTURE_2D, texture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data);
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material_t result = {
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.texture = texture};
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return result;
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}
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static material_t
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load_material(SDL_RWops* ops)
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{
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uint16_t name_length;
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SDL_RWread(ops, &name_length, sizeof(name_length), 1);
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char* name = scratch_mem_alloc(name_length, sizeof(*name));
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SDL_RWread(ops, name, sizeof(*name), name_length);
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LOG_ASSERT(name_length < MAX_NAME_LENGTH, "Name of material is too long: %s", name);
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uint16_t width;
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SDL_RWread(ops, &width, sizeof(width), 1);
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uint16_t height;
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SDL_RWread(ops, &height, sizeof(height), 1);
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uint8_t channel_count;
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SDL_RWread(ops, &channel_count, sizeof(channel_count), 1);
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uint8_t* data = scratch_mem_alloc(width * height * channel_count, sizeof(*data));
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SDL_RWread(ops, data, sizeof(*data), width * height * channel_count);
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material_t result = create_material(width, height, channel_count, data);
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strncpy(result.name, name, name_length);
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return result;
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}
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static transform_t
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load_transform(SDL_RWops* ops)
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{
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vec3 position;
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SDL_RWread(ops, &position, sizeof(position), 1);
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vec3 rotation;
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SDL_RWread(ops, &rotation, sizeof(rotation), 1);
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vec3 scale;
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SDL_RWread(ops, &scale, sizeof(scale), 1);
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handle_t parent;
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SDL_RWread(ops, &parent, sizeof(parent), 1);
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uint16_t child_count;
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SDL_RWread(ops, &child_count, sizeof(child_count), 1);
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LOG_ASSERT(child_count < MAX_CHILDREN_COUNT, "Transform has too many children: %d", child_count);
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handle_t* children = scratch_mem_alloc(child_count, sizeof(*children));
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SDL_RWread(ops, children, sizeof(*children), child_count);
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mat4 matrix = mat4_identity();
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transform_t result = {
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.position = position,
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.rotation = rotation,
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.scale = scale,
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.child_count = child_count,
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.parent = parent,
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.matrix = matrix};
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memcpy(result.children, children, child_count * sizeof(*children));
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return result;
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}
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static sound_t
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load_sound(SDL_RWops* ops)
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{
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uint16_t name_length;
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SDL_RWread(ops, &name_length, sizeof(name_length), 1);
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char* name = scratch_mem_alloc(name_length, sizeof(*name));
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SDL_RWread(ops, name, sizeof(*name), name_length);
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LOG_ASSERT(name_length < MAX_NAME_LENGTH, "Name of sound is too long: %s", name);
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uint32_t length;
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SDL_RWread(ops, &length, sizeof(length), 1);
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uint32_t sample_rate;
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SDL_RWread(ops, &sample_rate, sizeof(sample_rate), 1);
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uint8_t channel_count;
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SDL_RWread(ops, &channel_count, sizeof(channel_count), 1);
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size_t size = length * channel_count;
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float* wav_data = persistent_mem_alloc(&g_memory->data2, size, sizeof(*wav_data));
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SDL_RWread(ops, wav_data, sizeof(*wav_data), size);
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int byte_count = length * channel_count * sizeof(*wav_data);
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sound_t result = {
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.data = wav_data,
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.byte_count = byte_count};
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strncpy(result.name, name, name_length);
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return result;
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}
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static audio_source_t
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load_audio_source(SDL_RWops* ops)
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{
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uint16_t name_length;
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SDL_RWread(ops, &name_length, sizeof(name_length), 1);
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char* name = scratch_mem_alloc(name_length, sizeof(*name));
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SDL_RWread(ops, name, sizeof(*name), name_length);
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LOG_ASSERT(name_length < MAX_NAME_LENGTH, "Name of audio source is too long: %s", name);
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handle_t transform;
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SDL_RWread(ops, &transform, sizeof(transform), 1);
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float volume;
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SDL_RWread(ops, &volume, sizeof(volume), 1);
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uint32_t type;
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SDL_RWread(ops, &type, sizeof(type), 1);
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handle_t sound;
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SDL_RWread(ops, &sound, sizeof(sound), 1);
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audio_source_t result = {
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.type = (audio_type_e)type,
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.transform = transform,
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.volume = volume,
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.sound = sound};
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strncpy(result.name, name, name_length);
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return result;
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}
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static renderable_t
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load_renderable(SDL_RWops* ops)
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{
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uint16_t name_length;
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SDL_RWread(ops, &name_length, sizeof(name_length), 1);
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char* name = scratch_mem_alloc(name_length, sizeof(*name));
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SDL_RWread(ops, name, sizeof(*name), name_length);
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LOG_ASSERT(name_length < MAX_NAME_LENGTH, "Name of mesh is too long: %s", name);
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handle_t transform;
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SDL_RWread(ops, &transform, sizeof(transform), 1);
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handle_t mesh;
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SDL_RWread(ops, &mesh, sizeof(mesh), 1);
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handle_t material;
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SDL_RWread(ops, &material, sizeof(material), 1);
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renderable_t result = {
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.transform = transform,
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.mesh = mesh,
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.material = material};
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strncpy(result.name, name, name_length);
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return result;
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}
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static box_collider_t
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load_collider(SDL_RWops* ops)
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{
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handle_t transform;
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SDL_RWread(ops, &transform, sizeof(transform), 1);
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vec3 extents;
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SDL_RWread(ops, &extents, sizeof(extents), 1);
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box_collider_t result = {
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.transform = transform,
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.extents = extents};
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return result;
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}
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static point_light_t
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load_light(SDL_RWops* ops)
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{
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handle_t transform;
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SDL_RWread(ops, &transform, sizeof(transform), 1);
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vec3 color;
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SDL_RWread(ops, &color, sizeof(color), 1);
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float intensity;
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SDL_RWread(ops, &intensity, sizeof(intensity), 1);
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float radius;
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SDL_RWread(ops, &radius, sizeof(radius), 1);
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point_light_t result = {
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.transform = transform,
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.color = color,
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.intensity = intensity,
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.radius = radius};
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return result;
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}
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