coven/module.jai

#module_parameters(WITH_EDITOR := true, WITH_NETWORKING := false);

EDITOR :: WITH_EDITOR;
DEBUG :: true;
NETWORKING :: WITH_NETWORKING;

#if EDITOR {
    //#load "../editor/scene_editor.jai";
    //#load "../ui/new_ui/new_ui.jai";
    #load "editor/editor.jai";

    editor: Editor;
}

Engine_Mode :: enum {
    PLAYING;
    EDITING;
}
mode: Engine_Mode;

window: *Window;
renderer: *Renderer;
input : Input_State;
current_scene: *Scene;

camera_buffer : Buffer_Handle;
time_buffer : Buffer_Handle;
screen_data_buffer : Buffer_Handle;
directional_light_buffer : Buffer_Handle;

time: float;
dt: float;
quit: bool;
frame_index : u64 = 0;

Camera_Data :: struct {
    projection_matrix: Matrix4;
    view_matrix: Matrix4;
    position: Vector4;
}

Shader_Time :: struct {
    time: float;
    padding: Vector3;
}

coven_init :: (window_title: string, window_width: u32, window_height: u32, fullscreen: bool) {
    window = create_window(window_title, window_width, window_height, fullscreen);
    renderer = create_renderer(window);
    renderer.vsync = true;

    init_input();
    init_audio_system();
    init_console();

    ui_init();
}

coven_run :: (game_update_proc: (float), game_update_post_physics_proc: (float)) {
    time = xx seconds_since_init();

    while !quit {
        //reset_temporary_storage();

        frame_index += 1;

        update_input();

        // @Incomplete
        if key_pressed(.SHIFT) && key_down(.ESCAPE) {
            quit = true;
        }

        now : float = xx seconds_since_init();
        dt = now - time;
        time = now;

        update_fps_counter(dt);

        update_console();

        ui_begin();

        game_update_proc(min(0.4, dt));

        update_animators(dt);

        update_physics(current_scene, dt);
        update_transforms();
        game_update_post_physics_proc(dt);
        sync_engine_buffers();

        update_particle_systems(dt);

        ui_end();

        update_audio(dt);

        render();
    }

    SDL_DestroyWindow(window);

    SDL_Quit();
}

sync_engine_buffers :: () {
    // Camera buffer
    camera := *current_scene.camera;

    camera_data : Camera_Data;
    camera_data.projection_matrix = camera.projection_matrix;
    camera_data.view_matrix = camera.view_matrix;
    camera_data.position = to_v4(camera.position);
    upload_data_to_buffer(renderer, camera_buffer, *camera_data, size_of(Camera_Data));

    shader_time : Shader_Time;
    shader_time.time = time;
    upload_data_to_buffer(renderer, time_buffer, *shader_time, size_of(Shader_Time));

    // Sync entity transforms
    for current_scene.entities {
        if it.flags & .RENDERABLE {
            if it.renderable.type == {
                case .MODEL; {
                    for n, i: it.renderable.model.nodes {
                        if n.meshes.count > 0 {
                            node_data := *it.renderable.nodes[i];
                            upload_data_to_buffer(renderer, node_data.transform_buffer, *node_data.transform.world_matrix, size_of(Matrix4));

                            if node_data.num_bones > 0 {
                                for handle, mesh_index: n.meshes {
                                    m := parray_get(*renderer.meshes, handle);
                                    bones : [MAX_BONES] Matrix4;
                                    for bone_index: 0..m.num_bones-1 {
                                        bone := *it.renderable.nodes[m.bone_indices[bone_index]];
                                        bones[bone_index] = bone.transform.world_matrix * m.bone_matrices[bone_index];
                                    }
                                    upload_data_to_buffer(renderer, node_data.bone_buffers[mesh_index], bones.data, size_of(Matrix4) * m.num_bones);
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

#if NETWORKING {
    #load "networking/networking.jai";
}

#load "input/input.jai";
#load "renderer/renderer.jai";
#load "windowing/window.jai";
#load "physics/physics.jai";

#load "core/string_helpers.jai";
#load "core/math.jai";
#load "core/ray.jai";
#load "animation/animator.jai";
#load "core/entity.jai";
#load "core/parray.jai";
#load "core/scene.jai";
#load "core/transform.jai";
#load "core/camera.jai";
#load "core/console.jai";
#load "audio/audio.jai";
#load "core/fps.jai";

#scope_export

#import "Bucket_Array";
#import "Basic";
#import "String";
#import "System";
#import "Flat_Pool";
#import "Hash_Table";
File :: #import "File";
#import "File_Watcher";
#import "File_Utilities";