From 3cd5b0bcca694630fcb4b977ddf7be7cd1bce153 Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 20 Jan 2024 15:54:54 -0800 Subject: Rename gltfview -> game. --- game/src/plugins/CMakeLists.txt | 17 ++++ game/src/plugins/gltf_view.c | 196 ++++++++++++++++++++++++++++++++++++++++ game/src/plugins/plugin.h | 52 +++++++++++ game/src/plugins/texture_view.c | 147 ++++++++++++++++++++++++++++++ 4 files changed, 412 insertions(+) create mode 100644 game/src/plugins/CMakeLists.txt create mode 100644 game/src/plugins/gltf_view.c create mode 100644 game/src/plugins/plugin.h create mode 100644 game/src/plugins/texture_view.c (limited to 'game/src/plugins') diff --git a/game/src/plugins/CMakeLists.txt b/game/src/plugins/CMakeLists.txt new file mode 100644 index 0000000..ecb2a45 --- /dev/null +++ b/game/src/plugins/CMakeLists.txt @@ -0,0 +1,17 @@ +cmake_minimum_required(VERSION 3.0) + +project(plugins) + +set(LINK_LIBRARIES cstring math gfx) + +add_library(gltf_view SHARED + gltf_view.c) + +add_library(texture_view SHARED + texture_view.c) + +target_link_libraries(gltf_view PUBLIC + ${LINK_LIBRARIES}) + +target_link_libraries(texture_view PUBLIC + ${LINK_LIBRARIES}) diff --git a/game/src/plugins/gltf_view.c b/game/src/plugins/gltf_view.c new file mode 100644 index 0000000..c19d1b8 --- /dev/null +++ b/game/src/plugins/gltf_view.c @@ -0,0 +1,196 @@ +#include "plugin.h" + +#include +#include +#include +#include +#include +#include +#include + +#include + +// Paths to various scene files. +static const char* BOX = "/assets/models/box.gltf"; +static const char* SUZANNE = "/assets/models/suzanne.gltf"; +static const char* SPONZA = + "/assets/glTF-Sample-Models/2.0/Sponza/glTF/Sponza.gltf"; +static const char* FLIGHT_HELMET = + "/assets/glTF-Sample-Models/2.0/FlightHelmet/glTF/FlightHelmet.gltf"; +static const char* DAMAGED_HELMET = + "/assets/glTF-Sample-Models/2.0/DamagedHelmet/glTF/DamagedHelmet.gltf"; +static const char* GIRL = + "/home/jeanne/Nextcloud/assets/models/girl/girl-with-ground.gltf"; + +#define DEFAULT_SCENE_FILE GIRL + +struct State { + Scene* scene; + SceneCamera* camera; +}; + +/// Load the skyquad texture. +static Texture* load_environment_map(RenderBackend* render_backend) { + return gfx_load_texture( + render_backend, + &(LoadTextureCmd){ + .origin = TextureFromFile, + .type = LoadCubemap, + .colour_space = sRGB, + .filtering = NearestFiltering, + .mipmaps = false, + .data.cubemap.filepaths = { + mstring_make("/assets/skybox/clouds1/clouds1_east.bmp"), + mstring_make("/assets/skybox/clouds1/clouds1_west.bmp"), + mstring_make("/assets/skybox/clouds1/clouds1_up.bmp"), + mstring_make("/assets/skybox/clouds1/clouds1_down.bmp"), + mstring_make("/assets/skybox/clouds1/clouds1_south.bmp"), + mstring_make("/assets/skybox/clouds1/clouds1_north.bmp")} + }); +} + +/// Load the skyquad and return the environment light node. +static SceneNode* load_skyquad(RenderBackend* render_backend, SceneNode* root) { + assert(render_backend); + assert(root); + + Texture* environment_map = load_environment_map(render_backend); + if (!environment_map) { + return 0; + } + + return gfx_setup_skyquad(render_backend, root, environment_map); +} + +/// Load the 3D scene. +static SceneNode* load_scene( + Game* game, State* state, const char* scene_filepath) { + assert(game); + assert(game->gfx); + assert(state); + assert(state->scene); + + SceneNode* root = gfx_get_scene_root(state->scene); + RenderBackend* render_backend = gfx_get_render_backend(game->gfx); + + Camera* camera = gfx_get_camera_camera(state->camera); + spatial3_set_position(&camera->spatial, vec3_make(0, 0, 2)); + + SceneNode* sky_light_node = load_skyquad(render_backend, root); + if (!sky_light_node) { + return 0; + } + + SceneNode* scene_node = gfx_load_scene( + game->gfx, sky_light_node, + &(LoadSceneCmd){.origin = SceneFromFile, .filepath = scene_filepath}); + if (!scene_node) { + return 0; + } + + gfx_log_node_hierarchy(root); + + return scene_node; +} + +bool init(Game* game, State** pp_state) { + assert(game); + + State* state = calloc(1, sizeof(State)); + if (!state) { + goto cleanup; + } + + if (!(state->scene = gfx_make_scene())) { + goto cleanup; + } + if (!(state->camera = gfx_make_camera())) { + goto cleanup; + } + + const int argc = game->argc; + const char** argv = game->argv; + + // Usage: + const char* scene_filepath = argc > 1 ? argv[1] : DEFAULT_SCENE_FILE; + + SceneNode* node = load_scene(game, state, scene_filepath); + if (!node) { + goto cleanup; + } + Anima* anima = gfx_get_node_anima(node); + gfx_play_animation( + anima, &(AnimationPlaySettings){.name = "Walk", .loop = true}); + + *pp_state = state; + return true; + +cleanup: + shutdown(game, state); + if (state) { + free(state); + } + return false; +} + +void shutdown(Game* game, State* state) { + assert(game); + if (state) { + gfx_destroy_camera(&state->camera); + gfx_destroy_scene(&state->scene); + // State freed by plugin engine. + } +} + +void update(Game* game, State* state, double t, double dt) { + assert(game); + assert(state); + assert(state->scene); + assert(state->camera); + + gfx_animate_scene(state->scene, (R)t); + + const vec3 orbit_point = vec3_make(0, 2, 0); + Camera* camera = gfx_get_camera_camera(state->camera); + spatial3_orbit( + &camera->spatial, orbit_point, + /*radius=*/2.5, + /*azimuth=*/t * 0.5, /*zenith=*/0); + spatial3_lookat(&camera->spatial, orbit_point); +} + +/// Render the bounding boxes of all scene objects. +static void render_bounding_boxes(ImmRenderer* imm, const SceneNode* node) { + if (gfx_get_node_type(node) == ObjectNode) { + // TODO: Look at the scene log. The JointNodes are detached from the + // ObjectNodes. This is why the boxes are not being transformed as expected + // here. Anima needs to animate boxes? Use OOBB in addition to AABB? + const mat4 model = gfx_get_node_global_transform(node); + const SceneObject* obj = gfx_get_node_object(node); + const aabb3 box = gfx_calc_object_aabb(obj); + gfx_imm_set_model_matrix(imm, &model); + gfx_imm_draw_aabb(imm, box); + } + + // Render children's boxes. + for (NodeIter it = gfx_get_node_child(node); it; + it = gfx_get_next_child(it)) { + render_bounding_boxes(imm, gfx_get_iter_node(it)); + } +} + +void render(const Game* game, const State* state) { + assert(state); + assert(game); + assert(game->gfx); + assert(state->scene); + assert(state->camera); + + ImmRenderer* imm = gfx_get_imm_renderer(game->gfx); + assert(imm); + gfx_imm_start(imm); + gfx_imm_set_camera(imm, gfx_get_camera_camera(state->camera)); + gfx_imm_set_colour(imm, vec4_make(0.2, 0.2, 1.0, 0.3)); + render_bounding_boxes(imm, gfx_get_scene_root(state->scene)); + gfx_imm_end(imm); +} diff --git a/game/src/plugins/plugin.h b/game/src/plugins/plugin.h new file mode 100644 index 0000000..a2632cd --- /dev/null +++ b/game/src/plugins/plugin.h @@ -0,0 +1,52 @@ +/* + * Game plugin. + */ +#pragma once + +#include "../game.h" + +#include +#include + +#include + +typedef struct State State; + +/// Initialize the plugin, which may optionally return a state object. +/// +/// This function is called every time the plugin is (re)loaded. +/// +/// It is assumed that the plugin's state is fully encapsulated in the returned +/// state object. The plugin should not store any (mutable) state outside of the +/// returned state object (e.g., no mutable global variables.) +bool init(Game*, State**); + +/// Shut down the plugin. +/// +/// This function is called before the plugin is unloaded. +/// +/// The plugin should perform any destruction needed, but not free the state +/// object; freeing the state object's memory is handled by the caller. +void shutdown(Game*, State*); + +/// Function called the first time the plugin is loaded throughout the +/// application's lifetime. This allows the plugin to do one-time initialization +/// of the game state. +bool boot(Game*, State*); + +/// Update the plugin's and the game's state. +void update(Game*, State*, double t, double dt); + +/// Render hook. +void render(const Game*, const State*); + +/// Called when the game's window is resized. +void resize(Game* game, State* state, int width, int height); + +// Signatures for the plugin's exposed functions. +typedef bool (*plugin_init)(Game*, State**); +typedef bool (*plugin_shutdown)(Game*, State*); +typedef bool (*plugin_boot)(Game*, State*); +typedef void (*plugin_update)(Game*, State*, double t, double dt); +typedef void (*plugin_render)(const Game*, const State*); +typedef void (*plugin_resize)(Game* game, State* state, int width, int height); diff --git a/game/src/plugins/texture_view.c b/game/src/plugins/texture_view.c new file mode 100644 index 0000000..b424158 --- /dev/null +++ b/game/src/plugins/texture_view.c @@ -0,0 +1,147 @@ +#include "plugin.h" + +#include +#include +#include +#include +#include +#include + +#include + +#include +#include + +// Default texture to load if no texture is provided. +static const char* DEFAULT_TEXTURE = "/assets/skybox/clouds1/clouds1_west.bmp"; +// static const char* DEFAULT_TEXTURE = "/assets/checkerboard.jpg"; + +struct State { + Scene* scene; + SceneCamera* camera; +}; + +bool init(Game* game, State** pp_state) { + assert(game); + assert(pp_state); + + State* state = calloc(1, sizeof(State)); + if (!state) { + goto cleanup; + } + + // Usage: [texture file] + const char* texture_file = game->argc > 1 ? game->argv[1] : DEFAULT_TEXTURE; + + RenderBackend* render_backend = gfx_get_render_backend(game->gfx); + + Texture* texture = gfx_load_texture( + render_backend, &(LoadTextureCmd){ + .origin = TextureFromFile, + .type = LoadTexture, + .filtering = LinearFiltering, + .mipmaps = false, + .data.texture.filepath = mstring_make(texture_file)}); + if (!texture) { + goto cleanup; + } + + ShaderProgram* shader = gfx_make_view_texture_shader(render_backend); + if (!shader) { + goto cleanup; + } + + Geometry* geometry = gfx_make_quad_11(render_backend); + if (!geometry) { + goto cleanup; + } + + MaterialDesc material_desc = (MaterialDesc){.num_uniforms = 1}; + material_desc.uniforms[0] = (ShaderUniform){ + .type = UniformTexture, + .value.texture = texture, + .name = sstring_make("Texture")}; + Material* material = gfx_make_material(&material_desc); + if (!material) { + goto cleanup; + } + + const MeshDesc mesh_desc = + (MeshDesc){.geometry = geometry, .material = material, .shader = shader}; + Mesh* mesh = gfx_make_mesh(&mesh_desc); + if (!mesh) { + goto cleanup; + } + + SceneObject* object = gfx_make_object(); + if (!object) { + goto cleanup; + } + gfx_add_object_mesh(object, mesh); + + if (!(state->scene = gfx_make_scene())) { + goto cleanup; + } + + SceneNode* node = gfx_make_object_node(object); + if (!node) { + goto cleanup; + } + SceneNode* root = gfx_get_scene_root(state->scene); + if (!root) { + goto cleanup; + } + gfx_set_node_parent(node, root); + + if (!(state->camera = gfx_make_camera())) { + goto cleanup; + } + + *pp_state = state; + return true; + +cleanup: + shutdown(game, state); + if (state) { + free(state); + } + return false; +} + +void shutdown(Game* game, State* state) { + assert(game); + if (state) { + gfx_destroy_camera(&state->camera); + gfx_destroy_scene(&state->scene); + // State freed by plugin engine. + } +} + +void render(const Game* game, const State* state) { + assert(game); + assert(state); + + Renderer* renderer = gfx_get_renderer(game->gfx); + gfx_render_scene( + renderer, &(RenderSceneParams){ + .mode = RenderDefault, + .scene = state->scene, + .camera = state->camera}); +} + +void resize(Game* game, State* state, int width, int height) { + assert(game); + assert(state); + + RenderBackend* render_backend = gfx_get_render_backend(game->gfx); + gfx_set_viewport(render_backend, width, height); + + const R fovy = 90 * TO_RAD; + const R aspect = (R)width / (R)height; + const R near = 0.1; + const R far = 1000; + const mat4 projection = mat4_perspective(fovy, aspect, near, far); + + Camera* camera = gfx_get_camera_camera(state->camera); + camera->projection = projection; +} -- cgit v1.2.3