//------------------------------------------------------------------------------ // Take flight //------------------------------------------------------------------------------ #define SOKOL_IMPL #define SOKOL_D3D11 #include #include // starting server thread #pragma warning(disable : 33010) // this warning is so broken, doesn't understand assert() #include "sokol_app.h" #include "sokol_gfx.h" #include "sokol_glue.h" #include "sokol_gp.h" #include "sokol_time.h" #pragma warning(default : 33010) #pragma warning(disable : 6262) // warning about using a lot of stack, lol that's how stb image is #define STB_IMAGE_IMPLEMENTATION #include "stb_image.h" #include "types.h" #include "opus.h" #include #include // errno error message on file open #include "minilzo.h" #define MINIAUDIO_IMPLEMENTATION #include "miniaudio.h" // shaders #include "hueshift.gen.h" static sg_pipeline pip; static struct GameState gs = {0}; static int myplayer = -1; static bool right_mouse_down = false; static bool keydown[SAPP_KEYCODE_MENU] = {0}; typedef struct KeyPressed { bool pressed; uint64_t frame; } KeyPressed; static KeyPressed keypressed[SAPP_KEYCODE_MENU] = {0}; static V2 mouse_pos = {0}; static bool fullscreened = false; static bool mouse_pressed = false; static uint64_t mouse_pressed_frame = 0; static bool mouse_frozen = false; // @BeforeShip make this debug only thing static float funval = 0.0f; // easy to play with value controlled by left mouse button when held // down @BeforeShip remove on release builds static struct ClientToServer client_to_server = {0}; // buffer of inputs static ENetHost *client; static ENetPeer *peer; static float zoom_target = 300.0f; static float zoom = 300.0f; static enum Squad take_over_squad = (enum Squad) - 1; // -1 means not taking over any squad // images static sg_image image_itemframe; static sg_image image_itemframe_selected; static sg_image image_thrusterburn; static sg_image image_player; static sg_image image_cockpit_used; static sg_image image_stars; static sg_image image_stars2; static sg_image image_sun; static sg_image image_medbay_used; static sg_image image_mystery; static sg_image image_explosion; static sg_image image_low_health; static sg_image image_mic_muted; static sg_image image_flag_available; static sg_image image_flag_taken; static int cur_editing_boxtype = -1; static int cur_editing_rotation = 0; // audio static bool muted = false; static ma_device microphone_device; static ma_device speaker_device; OpusEncoder *enc; OpusDecoder *dec; OpusBuffer packets_to_send = {0}; OpusBuffer packets_to_play = {0}; ma_mutex send_packets_mutex = {0}; ma_mutex play_packets_mutex = {0}; // server thread void *server_thread_handle = 0; ServerThreadInfo server_info = {0}; static struct BoxInfo { enum BoxType type; const char *image_path; sg_image image; bool needs_tobe_unlocked; } boxes[] = { // if added to here will show up in toolbar, is placeable { .type = BoxHullpiece, .image_path = "loaded/hullpiece.png", }, { .type = BoxThruster, .image_path = "loaded/thruster.png", }, { .type = BoxBattery, .image_path = "loaded/battery.png", }, { .type = BoxCockpit, .image_path = "loaded/cockpit.png", }, { .type = BoxMedbay, .image_path = "loaded/medbay.png", }, { .type = BoxSolarPanel, .image_path = "loaded/solarpanel.png", }, { .type = BoxExplosive, .image_path = "loaded/explosive.png", .needs_tobe_unlocked = true, }, }; #define ARRLEN(arr) (sizeof(arr) / sizeof(*arr)) static struct SquadMeta { enum Squad squad; float hue; bool is_colorless; } squad_metas[] = { { .squad = SquadNone, .is_colorless = true, }, { .squad = SquadRed, .hue = 21.0f / 360.0f, }, { .squad = SquadGreen, .hue = 111.0f / 360.0f, }, { .squad = SquadBlue, .hue = 201.0f / 360.0f, }, { .squad = SquadPurple, .hue = 291.0f / 360.0f, }, }; struct SquadMeta squad_meta(enum Squad squad) { for (int i = 0; i < ARRLEN(squad_metas); i++) { if (squad_metas[i].squad == squad) return squad_metas[i]; } Log("Could not find squad %d!\n", squad); return (struct SquadMeta){0}; } struct BoxInfo boxinfo(enum BoxType type) { for (int i = 0; i < ARRLEN(boxes); i++) { if (boxes[i].type == type) return boxes[i]; } Log("No box info found for type %d\n", type); return (struct BoxInfo){0}; } static sg_image load_image(const char *path) { sg_image to_return = sg_alloc_image(); int x = 0; int y = 0; int comp = 0; const int desired_channels = 4; stbi_set_flip_vertically_on_load(true); stbi_uc *image_data = stbi_load(path, &x, &y, &comp, desired_channels); if (!image_data) { fprintf(stderr, "Failed to load image: %s\n", stbi_failure_reason()); exit(-1); } sg_init_image(to_return, &(sg_image_desc){.width = x, .height = y, .pixel_format = SG_PIXELFORMAT_RGBA8, .min_filter = SG_FILTER_NEAREST, .mag_filter = SG_FILTER_NEAREST, .data.subimage[0][0] = { .ptr = image_data, .size = (size_t)(x * y * desired_channels), }}); stbi_image_free(image_data); return to_return; } void microphone_data_callback(ma_device *pDevice, void *pOutput, const void *pInput, ma_uint32 frameCount) { assert(frameCount == VOIP_EXPECTED_FRAME_COUNT); if (peer != NULL) { ma_mutex_lock(&send_packets_mutex); OpusPacket *packet = push_packet(&packets_to_send); if (packet != NULL) { opus_int16 muted_audio[VOIP_EXPECTED_FRAME_COUNT] = {0}; const opus_int16 *audio_buffer = (const opus_int16 *)pInput; if (muted) audio_buffer = muted_audio; opus_int32 written = opus_encode(enc, audio_buffer, VOIP_EXPECTED_FRAME_COUNT, packet->data, VOIP_PACKET_MAX_SIZE); packet->length = written; } ma_mutex_unlock(&send_packets_mutex); } (void)pOutput; } void speaker_data_callback(ma_device *pDevice, void *pOutput, const void *pInput, ma_uint32 frameCount) { assert(frameCount == VOIP_EXPECTED_FRAME_COUNT); ma_mutex_lock(&play_packets_mutex); OpusPacket *cur_packet = pop_packet(&packets_to_play); if (cur_packet != NULL && cur_packet->length > 0) // length of 0 means skipped packet { opus_decode(dec, cur_packet->data, cur_packet->length, (opus_int16 *)pOutput, frameCount, 0); } else { opus_decode(dec, NULL, 0, (opus_int16 *)pOutput, frameCount, 0); // I think opus makes it sound good if packets are skipped with null } ma_mutex_unlock(&play_packets_mutex); (void)pInput; } static void init(void) { // audio { // opus { int error; enc = opus_encoder_create(VOIP_SAMPLE_RATE, 1, OPUS_APPLICATION_VOIP, &error); assert(error == OPUS_OK); dec = opus_decoder_create(VOIP_SAMPLE_RATE, 1, &error); assert(error == OPUS_OK); } ma_device_config microphone_config = ma_device_config_init(ma_device_type_capture); microphone_config.capture.format = ma_format_s16; microphone_config.capture.channels = 1; microphone_config.sampleRate = VOIP_SAMPLE_RATE; microphone_config.dataCallback = microphone_data_callback; ma_device_config speaker_config = ma_device_config_init(ma_device_type_playback); speaker_config.playback.format = ma_format_s16; speaker_config.playback.channels = 1; speaker_config.sampleRate = VOIP_SAMPLE_RATE; speaker_config.dataCallback = speaker_data_callback; ma_result result; result = ma_device_init(NULL, µphone_config, µphone_device); if (result != MA_SUCCESS) { Log("Failed to initialize capture device.\n"); exit(-1); } result = ma_device_init(NULL, &speaker_config, &speaker_device); if (result != MA_SUCCESS) { ma_device_uninit(µphone_device); Log("Failed to init speaker\n"); exit(-1); } if (ma_mutex_init(&send_packets_mutex) != MA_SUCCESS) Log("Failed to init send mutex\n"); if (ma_mutex_init(&play_packets_mutex) != MA_SUCCESS) Log("Failed to init play mutex\n"); result = ma_device_start(µphone_device); if (result != MA_SUCCESS) { ma_device_uninit(µphone_device); Log("Failed to start device.\n"); exit(-1); } result = ma_device_start(&speaker_device); if (result != MA_SUCCESS) { ma_device_uninit(µphone_device); ma_device_uninit(&speaker_device); Log("Failed to start speaker\n"); exit(-1); } Log("Initialized audio\n"); } // @BeforeShip make all fprintf into logging to file, warning dialog grids on // failure instead of exit(-1), replace the macros in sokol with this as well, // like assert Entity *entity_data = malloc(sizeof *entity_data * MAX_ENTITIES); initialize(&gs, entity_data, sizeof *entity_data * MAX_ENTITIES); sg_desc sgdesc = {.context = sapp_sgcontext()}; sg_setup(&sgdesc); if (!sg_isvalid()) { fprintf(stderr, "Failed to create Sokol GFX context!\n"); exit(-1); } sgp_desc sgpdesc = {0}; sgp_setup(&sgpdesc); if (!sgp_is_valid()) { fprintf(stderr, "Failed to create Sokol GP context: %s\n", sgp_get_error_message(sgp_get_last_error())); exit(-1); } // shaders { // initialize shader sgp_pipeline_desc pip_desc = { .shader = *hueshift_program_shader_desc(sg_query_backend()), .blend_mode = SGP_BLENDMODE_BLEND, }; pip = sgp_make_pipeline(&pip_desc); if (sg_query_pipeline_state(pip) != SG_RESOURCESTATE_VALID) { fprintf(stderr, "failed to make custom pipeline\n"); exit(-1); } } // images loading { for (int i = 0; i < ARRLEN(boxes); i++) { boxes[i].image = load_image(boxes[i].image_path); } image_thrusterburn = load_image("loaded/thrusterburn.png"); image_itemframe = load_image("loaded/itemframe.png"); image_itemframe_selected = load_image("loaded/itemframe_selected.png"); image_player = load_image("loaded/player.png"); image_cockpit_used = load_image("loaded/cockpit_used.png"); image_stars = load_image("loaded/stars.png"); image_stars2 = load_image("loaded/stars2.png"); image_sun = load_image("loaded/sun.png"); image_medbay_used = load_image("loaded/medbay_used.png"); image_mystery = load_image("loaded/mystery.png"); image_explosion = load_image("loaded/explosion.png"); image_low_health = load_image("loaded/low_health.png"); image_mic_muted = load_image("loaded/mic_muted.png"); image_flag_available = load_image("loaded/flag_available.png"); image_flag_taken = load_image("loaded/flag_ripped.png"); } // socket initialization { if (enet_initialize() != 0) { fprintf(stderr, "An error occurred while initializing ENet.\n"); exit(-1); } client = enet_host_create(NULL /* create a client host */, 1 /* only allow 1 outgoing connection */, 2 /* allow up 2 channels to be used, 0 and 1 */, 0 /* assume any amount of incoming bandwidth */, 0 /* assume any amount of outgoing bandwidth */); if (client == NULL) { fprintf( stderr, "An error occurred while trying to create an ENet client host.\n"); exit(-1); } ENetAddress address; ENetEvent event; enet_address_set_host(&address, SERVER_ADDRESS); address.port = SERVER_PORT; peer = enet_host_connect(client, &address, 2, 0); if (peer == NULL) { fprintf(stderr, "No available peers for initiating an ENet connection.\n"); exit(-1); } // the timeout is the third parameter here if (enet_host_service(client, &event, 5000) > 0 && event.type == ENET_EVENT_TYPE_CONNECT) { Log("Connected\n"); } else { /* Either the 5 seconds are up or a disconnect event was */ /* received. Reset the peer in the event the 5 seconds */ /* had run out without any significant event. */ enet_peer_reset(peer); fprintf(stderr, "Connection to server failed."); exit(-1); } } } #define transform_scope DeferLoop(sgp_push_transform(), sgp_pop_transform()) static void draw_color_rect_centered(V2 center, float size) { float halfbox = size / 2.0f; sgp_draw_filled_rect(center.x - halfbox, center.y - halfbox, size, size); } static void draw_texture_rectangle_centered(V2 center, V2 width_height) { V2 halfsize = V2scale(width_height, 0.5f); sgp_draw_textured_rect(center.x - halfsize.x, center.y - halfsize.y, width_height.x, width_height.y); } static void draw_texture_centered(V2 center, float size) { draw_texture_rectangle_centered(center, (V2){size, size}); } static void draw_circle(V2 point, float radius) { #define POINTS 64 sgp_line lines[POINTS]; for (int i = 0; i < POINTS; i++) { float progress = (float)i / (float)POINTS; float next_progress = (float)(i + 1) / (float)POINTS; lines[i].a = (V2){.x = cosf(progress * 2.0f * PI) * radius, .y = sinf(progress * 2.0f * PI) * radius}; lines[i].b = (V2){.x = cosf(next_progress * 2.0f * PI) * radius, .y = sinf(next_progress * 2.0f * PI) * radius}; lines[i].a = V2add(lines[i].a, point); lines[i].b = V2add(lines[i].b, point); } sgp_draw_lines(lines, POINTS); } static Entity * myentity() { if (myplayer == -1) return NULL; Entity *to_return = get_entity(&gs, gs.players[myplayer].entity); if (to_return != NULL) assert(to_return->is_player); return to_return; } bool can_build(int i) { bool allow_building = true; if (boxinfo((enum BoxType)i).needs_tobe_unlocked) { allow_building = gs.players[myplayer].unlocked_bombs; } return allow_building; } void attempt_to_build(int i) { if (can_build(i)) cur_editing_boxtype = i; } static void ui(bool draw, float dt, float width, float height) { static float cur_opacity = 1.0f; cur_opacity = lerp(cur_opacity, myentity() != NULL ? 1.0f : 0.0f, dt * 5.0f); if (cur_opacity <= 0.01f) { return; } if (draw) sgp_push_transform(); // draw flags static V2 flag_pos[SquadLast] = {0}; static float flag_rot[SquadLast] = {0}; static float flag_scaling_increase[SquadLast] = {0}; static bool choosing_flags = false; const float flag_padding = 70.0f; const float center_panel_height = 200.0f; static float center_panel_width = 0.0f; const float target_center_panel_width = ((SquadLast) + 2) * flag_padding; #define FLAG_ITER(i) for (int i = 0; i < SquadLast; i++) { FLAG_ITER(i) { V2 target_pos = {0}; float target_rot = 0.0f; float flag_progress = (float)i / (float)(SquadLast - 1.0f); if (choosing_flags) { target_pos.x = width / 2.0f + lerp(-center_panel_width / 2.0f + flag_padding, center_panel_width / 2.0f - flag_padding, flag_progress); target_pos.y = height * 0.5f; target_rot = 0.0f; } else { target_pos.x = 25.0f; target_pos.y = 200.0f; target_rot = lerp(-PI / 3.0f, PI / 3.0f, flag_progress) + PI / 2.0f; } flag_pos[i] = V2lerp(flag_pos[i], target_pos, dt * 5.0f); flag_rot[i] = lerp_angle(flag_rot[i], target_rot, dt * 5.0f); } center_panel_width = lerp(center_panel_width, choosing_flags ? target_center_panel_width : 0.0f, 6.0f * dt); // center panel { AABB panel_rect = (AABB){ .x = width / 2.0f - center_panel_width / 2.0f, .y = height / 2.0f - center_panel_height / 2.0f, .width = center_panel_width, .height = center_panel_height, }; if (choosing_flags && mouse_pressed && !has_point(panel_rect, mouse_pos)) { mouse_pressed = false; choosing_flags = false; } if (draw) { sgp_set_color(0.7f, 0.7f, 0.7f, 0.5f); sgp_draw_filled_rect(panel_rect.x, panel_rect.y, panel_rect.width, panel_rect.height); } } FLAG_ITER(i) { enum Squad this_squad = (enum Squad)i; bool this_squad_available = true; if (this_squad != SquadNone) PLAYERS_ITER(gs.players, other_player) { if (other_player->squad == this_squad) { this_squad_available = false; break; } } float size = 128.0f; bool hovering = V2dist(mouse_pos, flag_pos[i]) < size * 0.25f && this_squad_available; if (!choosing_flags && hovering && mouse_pressed) { choosing_flags = true; mouse_pressed = false; } if (this_squad_available && choosing_flags && hovering && mouse_pressed) { take_over_squad = this_squad; mouse_pressed = false; } flag_scaling_increase[i] = lerp(flag_scaling_increase[i], hovering ? 0.2f : 0.0f, dt * 9.0f); size *= 1.0f + flag_scaling_increase[i]; if (draw) { transform_scope { if (this_squad_available) { sgp_set_image(0, image_flag_available); } else { sgp_set_image(0, image_flag_taken); } sgp_set_pipeline(pip); struct SquadMeta meta = squad_meta(this_squad); hueshift_uniforms_t uniform = {0}; uniform.is_colorless = meta.is_colorless; uniform.target_hue = meta.hue; sgp_set_uniform(&uniform, sizeof(hueshift_uniforms_t)); sgp_rotate_at(flag_rot[i], flag_pos[i].x, flag_pos[i].y); sgp_scale_at(1.0f, -1.0f, flag_pos[i].x, flag_pos[i].y); // images upside down by default :( draw_texture_centered(flag_pos[i], size); sgp_reset_image(0); sgp_reset_pipeline(); } } } if (choosing_flags) mouse_pressed = false; // no more inputs beyond flags when the flag choice modal is open } #undef FLAG_ITER // draw spice bar if (draw) { static float damage = 0.5f; if (myentity() != NULL) { damage = myentity()->damage; } sgp_set_color(0.5f, 0.5f, 0.5f, cur_opacity); float margin = width * 0.2f; float bar_width = width - margin * 2.0f; float y = height - 150.0f; sgp_draw_filled_rect(margin, y, bar_width, 30.0f); sgp_set_color(1.0f, 1.0f, 1.0f, cur_opacity); sgp_draw_filled_rect( margin, y, bar_width * (1.0f - damage), 30.0f); } // draw muted static float muted_opacity = 0.0f; if (draw) { muted_opacity = lerp(muted_opacity, muted ? 1.0f : 0.0f, 8.0f * dt); sgp_set_color(1.0f, 1.0f, 1.0f, muted_opacity); float size_x = 150.0f; float size_y = 150.0f; sgp_set_image(0, image_mic_muted); float x = width - size_x - 40.0f; float y = height - size_y - 40.0f; transform_scope { sgp_scale_at(1.0f, -1.0f, x + size_x / 2.0f, y + size_y / 2.0f); sgp_draw_textured_rect(x, y, size_x, size_y); sgp_reset_image(0); } } // draw item toolbar { float itemframe_width = (float)sg_query_image_info(image_itemframe).width * 2.0f; float itemframe_height = (float)sg_query_image_info(image_itemframe).height * 2.0f; float total_width = itemframe_width * ARRLEN(boxes); float item_width = itemframe_width * 0.75f; float item_height = itemframe_height * 0.75f; float item_offset_x = (itemframe_width - item_width) / 2.0f; float item_offset_y = (itemframe_height - item_height) / 2.0f; float x = width / 2.0f - total_width / 2.0f; float y = height - itemframe_height * 1.5f; for (int i = 0; i < ARRLEN(boxes); i++) { if (has_point( (AABB){ .x = x, .y = y, .width = itemframe_width, .height = itemframe_height, }, mouse_pos) && mouse_pressed) { // "handle" mouse pressed attempt_to_build(i); mouse_pressed = false; } if (draw) { sgp_set_color(1.0f, 1.0f, 1.0f, cur_opacity); if (cur_editing_boxtype == i) { sgp_set_image(0, image_itemframe_selected); } else { sgp_set_image(0, image_itemframe); } sgp_draw_textured_rect(x, y, itemframe_width, itemframe_height); struct BoxInfo info = boxinfo((enum BoxType)i); if (can_build(i)) { sgp_set_image(0, info.image); } else { sgp_set_image(0, image_mystery); } transform_scope { float item_x = x + item_offset_x; float item_y = y + item_offset_y; sgp_scale_at(1.0f, -1.0f, item_x + item_width / 2.0f, item_y + item_height / 2.0f); // sgp_scale(1.0f, -1.0f); sgp_draw_textured_rect(item_x, item_y, item_width, item_height); } sgp_reset_image(0); } x += itemframe_width; } } if (draw) sgp_pop_transform(); } static void draw_dots(V2 camera_pos, float gap) { sgp_set_color(1.0f, 1.0f, 1.0f, 1.0f); const int num = 100; for (int x = -num; x < num; x++) { for (int y = -num; y < num; y++) { V2 star = (V2){(float)x * gap, (float)y * gap}; if (V2lengthsqr(V2sub(star, camera_pos)) > VISION_RADIUS * VISION_RADIUS) continue; star.x += hash11(star.x * 100.0f + star.y * 67.0f) * gap; star.y += hash11(star.y * 93.0f + star.x * 53.0f) * gap; sgp_draw_point(star.x, star.y); } } } static void frame(void) { float width = (float)sapp_width(), height = (float)sapp_height(); float ratio = width / height; double time = sapp_frame_count() * sapp_frame_duration(); float dt = (float)sapp_frame_duration(); // pressed input management { for (int i = 0; i < SAPP_KEYCODE_MENU; i++) { if (keypressed[i].frame < sapp_frame_count()) { keypressed[i].pressed = false; } } if (mouse_pressed_frame < sapp_frame_count()) { mouse_pressed = false; } } // networking { ENetEvent event; while (true) { int enet_status = enet_host_service(client, &event, 0); if (enet_status > 0) { switch (event.type) { case ENET_EVENT_TYPE_CONNECT: { Log("New client from host %x\n", event.peer->address.host); break; } case ENET_EVENT_TYPE_RECEIVE: { char *decompressed = malloc(sizeof *decompressed * MAX_SERVER_TO_CLIENT); // @Robust no malloc size_t decompressed_max_len = MAX_SERVER_TO_CLIENT; assert(LZO1X_MEM_DECOMPRESS == 0); ma_mutex_lock(&play_packets_mutex); ServerToClient msg = (ServerToClient){ .cur_gs = &gs, .playback_buffer = &packets_to_play, }; int return_value = lzo1x_decompress_safe(event.packet->data, event.packet->dataLength, decompressed, &decompressed_max_len, NULL); if (return_value == LZO_E_OK) { server_to_client_deserialize(&msg, decompressed, decompressed_max_len, false); myplayer = msg.your_player; } else { Log("Couldn't decompress gamestate packet, error code %d from lzo\n", return_value); } ma_mutex_unlock(&play_packets_mutex); free(decompressed); enet_packet_destroy(event.packet); break; } case ENET_EVENT_TYPE_DISCONNECT: { fprintf(stderr, "Disconnected from server\n"); exit(-1); break; } } } else if (enet_status == 0) { break; } else if (enet_status < 0) { fprintf(stderr, "Error receiving enet events: %d\n", enet_status); break; } } } // gameplay ui(false, dt, width, height); // handle events V2 build_target_pos = {0}; float build_target_rotation = 0.0f; static V2 camera_pos = { 0}; // keeps camera at same position after player death V2 world_mouse_pos = mouse_pos; // processed later in scope struct BuildPreviewInfo { V2 grid_pos; float grid_rotation; } build_preview = {0}; V2 hand_pos = {0}; // in local space of grid when hovering over a grid bool hand_at_arms_length = false; { // interpolate zoom zoom = lerp(zoom, zoom_target, dt * 12.0f); // calculate world position and camera { if (myentity() != NULL) { camera_pos = entity_pos(myentity()); } world_mouse_pos = V2sub(world_mouse_pos, (V2){.x = width / 2.0f, .y = height / 2.0f}); world_mouse_pos.x /= zoom; world_mouse_pos.y /= -zoom; world_mouse_pos = V2add(world_mouse_pos, (V2){.x = camera_pos.x, .y = camera_pos.y}); } // calculate build preview stuff EntityID grid_to_build_on = (EntityID){0}; V2 possibly_local_hand_pos = (V2){0}; if (myentity() != NULL) { hand_pos = V2sub(world_mouse_pos, entity_pos(myentity())); float hand_len = V2length(hand_pos); if (hand_len > MAX_HAND_REACH) { hand_at_arms_length = true; hand_len = MAX_HAND_REACH; } else { hand_at_arms_length = false; } hand_pos = V2scale(V2normalize(hand_pos), hand_len); hand_pos = V2add(hand_pos, entity_pos(myentity())); possibly_local_hand_pos = V2sub(hand_pos, entity_pos(myentity())); Entity *placing_grid = closest_to_point_in_radius(&gs, hand_pos, BUILD_BOX_SNAP_DIST_TO_SHIP); if (placing_grid == NULL) { build_preview = (struct BuildPreviewInfo){ .grid_pos = hand_pos, .grid_rotation = 0.0f, }; } else { grid_to_build_on = get_id(&gs, placing_grid); hand_pos = grid_snapped_box_pos(placing_grid, hand_pos); possibly_local_hand_pos = grid_world_to_local(placing_grid, hand_pos); build_preview = (struct BuildPreviewInfo){ .grid_pos = entity_pos(placing_grid), .grid_rotation = entity_rotation(placing_grid), }; } } // Create and send input packet { static size_t last_frame_id = 0; InputFrame cur_input_frame = {0}; cur_input_frame.id = last_frame_id; V2 input = (V2){ .x = (float)keydown[SAPP_KEYCODE_D] - (float)keydown[SAPP_KEYCODE_A], .y = (float)keydown[SAPP_KEYCODE_W] - (float)keydown[SAPP_KEYCODE_S], }; if (V2length(input) > 0.0) input = V2normalize(input); cur_input_frame.movement = input; cur_input_frame.seat_action = keypressed[SAPP_KEYCODE_G].pressed; cur_input_frame.grid_hand_pos_local_to = grid_to_build_on; cur_input_frame.hand_pos = possibly_local_hand_pos; cur_input_frame.take_over_squad = take_over_squad; if (mouse_pressed && cur_editing_boxtype != -1) { cur_input_frame.dobuild = mouse_pressed; cur_input_frame.build_type = cur_editing_boxtype; cur_input_frame.build_rotation = cur_editing_rotation; } InputFrame latest = client_to_server.inputs[0]; // @Robust split this into separate lines and be very careful about testing for inequality bool input_differs = false; input_differs = input_differs || !V2equal(cur_input_frame.movement, latest.movement, 0.01f); input_differs = input_differs || cur_input_frame.seat_action != latest.seat_action; input_differs = input_differs || !entityids_same(cur_input_frame.seat_to_inhabit, latest.seat_to_inhabit); input_differs = input_differs || !V2equal(cur_input_frame.hand_pos, latest.hand_pos, 0.01f); input_differs = input_differs || cur_input_frame.dobuild != latest.dobuild; input_differs = input_differs || cur_input_frame.build_type != latest.build_type; input_differs = input_differs || cur_input_frame.build_rotation != latest.build_rotation; input_differs = input_differs || !entityids_same(cur_input_frame.grid_hand_pos_local_to, latest.grid_hand_pos_local_to); input_differs = input_differs || cur_input_frame.take_over_squad != latest.take_over_squad; if (input_differs) { InputFrame last_frame = client_to_server.inputs[0]; for (int i = 0; i < INPUT_BUFFER - 1; i++) { InputFrame last_last_frame = last_frame; last_frame = client_to_server.inputs[i + 1]; client_to_server.inputs[i + 1] = last_last_frame; // these references, in old input frames, may have been deleted by the time we // want to send them. client_to_server.inputs[i + 1].seat_to_inhabit = cur_input_frame.seat_to_inhabit; client_to_server.inputs[i + 1].grid_hand_pos_local_to = cur_input_frame.grid_hand_pos_local_to; } cur_input_frame.tick = tick(&gs); client_to_server.inputs[0] = cur_input_frame; last_frame_id += 1; } static int64_t last_sent_input_time = 0; if (stm_sec(stm_diff(stm_now(), last_sent_input_time)) > TIME_BETWEEN_INPUT_PACKETS) { ma_mutex_lock(&send_packets_mutex); client_to_server.mic_data = &packets_to_send; char serialized[MAX_CLIENT_TO_SERVER] = {0}; size_t out_len = 0; if (client_to_server_serialize(&gs, &client_to_server, serialized, &out_len, MAX_CLIENT_TO_SERVER)) { ENetPacket *packet = enet_packet_create((void *)serialized, out_len, ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT); enet_peer_send(peer, 0, packet); // @Robust error check this last_sent_input_time = stm_now(); } else { Log("Failed to serialize client to server!\n"); } client_to_server.mic_data = NULL; ma_mutex_unlock(&send_packets_mutex); } } // @BeforeShip client side prediction and rollback to previous server // authoritative state, then replay inputs no need to store copies of game // state, just player input frame to frame. Then know how many frames ago // the server game state arrived, it's that easy! process(&gs, // (float)sapp_frame_duration()); } // drawing { sgp_begin((int)width, (int)height); sgp_viewport(0, 0, (int)width, (int)height); sgp_project(0.0f, width, 0.0f, height); sgp_set_blend_mode(SGP_BLENDMODE_BLEND); // Draw background color set_color(colhexcode(0x000000)); // sgp_set_color(0.1f, 0.1f, 0.1f, 1.0f); sgp_clear(); // sokol drawing library draw in world space // world space coordinates are +Y up, -Y down. Like normal cartesian coords transform_scope { sgp_translate(width / 2, height / 2); sgp_scale_at(zoom, -zoom, 0.0f, 0.0f); // parllax layers, just the zooming, but not 100% of the camera panning #if 1 // space background transform_scope { V2 scaled_camera_pos = V2scale(camera_pos, 0.05f); // this is how strong/weak the parallax is sgp_translate(-scaled_camera_pos.x, -scaled_camera_pos.y); set_color(WHITE); sgp_set_image(0, image_stars); float stars_height_over_width = (float)sg_query_image_info(image_stars).height / (float)sg_query_image_info(image_stars).width; const float stars_width = 35.0f; float stars_height = stars_width * stars_height_over_width; sgp_draw_textured_rect(-stars_width / 2.0f, -stars_height / 2.0f, stars_width, stars_height); // sgp_draw_textured_rect(0, 0, stars_width, stars_height); sgp_reset_image(0); } transform_scope { V2 scaled_camera_pos = V2scale(camera_pos, 0.1f); // this is how strong/weak the parallax is sgp_translate(-scaled_camera_pos.x, -scaled_camera_pos.y); set_color(WHITE); sgp_set_image(0, image_stars2); float stars_height_over_width = (float)sg_query_image_info(image_stars).height / (float)sg_query_image_info(image_stars).width; const float stars_width = 35.0f; float stars_height = stars_width * stars_height_over_width; sgp_draw_textured_rect(-stars_width / 2.0f, -stars_height / 2.0f, stars_width, stars_height); // sgp_draw_textured_rect(0, 0, stars_width, stars_height); sgp_reset_image(0); } #endif #if 1 // parallaxed dots transform_scope { V2 scaled_camera_pos = V2scale(camera_pos, 0.25f); sgp_translate(-scaled_camera_pos.x, -scaled_camera_pos.y); set_color(WHITE); draw_dots(scaled_camera_pos, 3.0f); } transform_scope { V2 scaled_camera_pos = V2scale(camera_pos, 0.5f); sgp_translate(-scaled_camera_pos.x, -scaled_camera_pos.y); set_color(WHITE); draw_dots(scaled_camera_pos, 2.0f); } #endif // camera go to player sgp_translate(-camera_pos.x, -camera_pos.y); draw_dots(camera_pos, 1.5f); // in plane dots // hand reached limit circle if (myentity() != NULL) { static float hand_reach_alpha = 1.0f; hand_reach_alpha = lerp(hand_reach_alpha, hand_at_arms_length ? 1.0f : 0.0f, dt * 5.0f); sgp_set_color(1.0f, 1.0f, 1.0f, hand_reach_alpha); draw_circle(entity_pos(myentity()), MAX_HAND_REACH); } // vision circle, what player can see if (myentity() != NULL) { set_color(colhexcode(0x4685e3)); draw_circle(entity_pos(myentity()), VISION_RADIUS); } float halfbox = BOX_SIZE / 2.0f; // mouse frozen, debugging tool if (mouse_frozen) { sgp_set_color(1.0f, 0.0f, 0.0f, 0.5f); sgp_draw_filled_rect(world_mouse_pos.x, world_mouse_pos.y, 0.1f, 0.1f); } // building preview if (cur_editing_boxtype != -1) { sgp_set_color(0.5f, 0.5f, 0.5f, (sinf((float)time * 9.0f) + 1.0f) / 3.0f + 0.2f); transform_scope { sgp_set_image(0, boxinfo(cur_editing_boxtype).image); sgp_rotate_at(build_preview.grid_rotation + rotangle(cur_editing_rotation), hand_pos.x, hand_pos.y); draw_texture_centered(hand_pos, BOX_SIZE); // drawbox(hand_pos, build_preview.grid_rotation, 0.0f, // cur_editing_boxtype, cur_editing_rotation); sgp_reset_image(0); } } static float player_scaling = 1.0f; player_scaling = lerp(player_scaling, zoom < 6.5f ? 100.0f : 1.0f, dt * 7.0f); for (size_t i = 0; i < gs.cur_next_entity; i++) { Entity *e = &gs.entities[i]; if (!e->exists) continue; // draw grid if (e->is_grid) { Entity *g = e; BOXES_ITER(&gs, b, g) { if (b->is_explosion_unlock) { set_color(colhexcode(0xfcba03)); draw_circle(entity_pos(b), GOLD_UNLOCK_RADIUS); } sgp_set_color(1.0f, 1.0f, 1.0f, 1.0f); // debug draw force vectors for thrusters #if 0 { if (b->type == BoxThruster) { dbg_rect(entity_pos(b)); dbg_line(entity_pos(b), V2add(entity_pos(b), V2scale(thruster_force(b), -1.0f))); } } #endif if (b->box_type == BoxBattery) { float cur_alpha = sgp_get_color().a; Color from = WHITE; Color to = colhex(255, 0, 0); Color result = Collerp(from, to, b->energy_used / BATTERY_CAPACITY); sgp_set_color(result.r, result.g, result.b, cur_alpha); } transform_scope { sgp_rotate_at(entity_rotation(g) + rotangle(b->compass_rotation), entity_pos(b).x, entity_pos(b).y); if (b->box_type == BoxThruster) { transform_scope { sgp_set_color(1.0f, 1.0f, 1.0f, 1.0f); sgp_set_image(0, image_thrusterburn); // float scaling = 1.0 + (hash11(time*3.0)/2.0)*lerp(0.0, // 0.07, b->thrust); printf("%f\n", b->thrust); float scaling = 0.95f + lerp(0.0f, 0.3f, b->thrust); // float scaling = 1.1; // sgp_translate(-(scaling*BOX_SIZE - BOX_SIZE), 0.0); // sgp_scale(scaling, 1.0); sgp_scale_at(scaling, 1.0f, entity_pos(b).x, entity_pos(b).y); draw_texture_centered(entity_pos(b), BOX_SIZE); sgp_reset_image(0); } } sg_image img = boxinfo(b->box_type).image; if (b->box_type == BoxCockpit) { if (get_entity(&gs, b->player_who_is_inside_of_me) != NULL) img = image_cockpit_used; } if (b->box_type == BoxMedbay) { if (get_entity(&gs, b->player_who_is_inside_of_me) != NULL) img = image_medbay_used; } sgp_set_image(0, img); if (b->indestructible) { sgp_set_color(0.2f, 0.2f, 0.2f, 1.0f); } draw_texture_centered(entity_pos(b), BOX_SIZE); sgp_reset_image(0); if (b->box_type == BoxSolarPanel) { Color to_set = colhexcode(0xeb9834); to_set.a = b->sun_amount * 0.5f; set_color(to_set); draw_color_rect_centered(entity_pos(b), BOX_SIZE); } sgp_set_color(0.5f, 0.1f, 0.1f, b->damage); draw_color_rect_centered(entity_pos(b), BOX_SIZE); } } // draw the velocity #if 0 sgp_set_color(1.0f, 0.0f, 0.0f, 1.0f); V2 vel = grid_vel(g); V2 to = V2add(grid_com(g), vel); sgp_draw_line(grid_com(g).x, grid_com(g).y, to.x, to.y); #endif } // draw player if (e->is_player && get_entity(&gs, e->currently_inside_of_box) == NULL) { transform_scope { sgp_rotate_at(entity_rotation(e), entity_pos(e).x, entity_pos(e).y); sgp_set_color(1.0f, 1.0f, 1.0f, 1.0f); sgp_set_pipeline(pip); struct SquadMeta meta = squad_meta(e->presenting_squad); hueshift_uniforms_t uniform = {0}; uniform.is_colorless = meta.is_colorless; uniform.target_hue = meta.hue; sgp_set_uniform(&uniform, sizeof(hueshift_uniforms_t)); sgp_set_image(0, image_player); draw_texture_rectangle_centered(entity_pos(e), V2scale(PLAYER_SIZE, player_scaling)); sgp_reset_image(0); sgp_reset_pipeline(); } } if (e->is_explosion) { sgp_set_image(0, image_explosion); sgp_set_color(1.0f, 1.0f, 1.0f, 1.0f - (e->explosion_progresss / EXPLOSION_TIME)); draw_texture_centered(e->explosion_pos, EXPLOSION_RADIUS * 2.0f); sgp_reset_image(0); } } // gold target set_color(GOLD); sgp_draw_filled_rect(gs.goldpos.x, gs.goldpos.y, 0.1f, 0.1f); // the SUN transform_scope { sgp_translate(SUN_POS.x, SUN_POS.y); set_color(WHITE); sgp_set_image(0, image_sun); draw_texture_centered((V2){0}, SUN_RADIUS * 2.0f); sgp_reset_image(0); // sun DEATH RADIUS set_color(RED); draw_circle((V2){0}, INSTANT_DEATH_DISTANCE_FROM_SUN); } sgp_set_color(1.0f, 1.0f, 1.0f, 1.0f); dbg_drawall(); } // world space transform end // low health if (myentity() != NULL) { sgp_set_color(1.0f, 1.0f, 1.0f, myentity()->damage); sgp_set_image(0, image_low_health); draw_texture_rectangle_centered((V2){width / 2.0f, height / 2.0f}, (V2){width, height}); sgp_reset_image(0); } // UI drawn in screen space ui(true, dt, width, height); } sg_pass_action pass_action = {0}; sg_begin_default_pass(&pass_action, (int)width, (int)height); sgp_flush(); sgp_end(); sg_end_pass(); sg_commit(); } void cleanup(void) { sg_destroy_pipeline(pip); ma_mutex_lock(&server_info.info_mutex); server_info.should_quit = true; ma_mutex_unlock(&server_info.info_mutex); WaitForSingleObject(server_thread_handle, INFINITE); ma_mutex_uninit(&send_packets_mutex); ma_mutex_uninit(&play_packets_mutex); ma_device_uninit(µphone_device); ma_device_uninit(&speaker_device); opus_encoder_destroy(enc); opus_decoder_destroy(dec); destroy(&gs); free(gs.entities); sgp_shutdown(); sg_shutdown(); enet_deinitialize(); ma_mutex_uninit(&server_info.info_mutex); } void event(const sapp_event *e) { switch (e->type) { case SAPP_EVENTTYPE_KEY_DOWN: #ifdef DEBUG_TOOLS if (e->key_code == SAPP_KEYCODE_T) { mouse_frozen = !mouse_frozen; } #endif if (e->key_code == SAPP_KEYCODE_R) { cur_editing_rotation += 1; cur_editing_rotation %= RotationLast; } if (e->key_code == SAPP_KEYCODE_M) { muted = !muted; } if (e->key_code == SAPP_KEYCODE_F11) { fullscreened = !fullscreened; sapp_toggle_fullscreen(); } if (e->key_code == SAPP_KEYCODE_ESCAPE && fullscreened) { sapp_toggle_fullscreen(); fullscreened = false; } int key_num = e->key_code - SAPP_KEYCODE_0; int target_box = key_num - 1; if (target_box < BoxLast && target_box >= 0) { attempt_to_build(target_box); } if (!mouse_frozen) { keydown[e->key_code] = true; if (keypressed[e->key_code].frame == 0) { keypressed[e->key_code].pressed = true; keypressed[e->key_code].frame = e->frame_count; } } break; case SAPP_EVENTTYPE_KEY_UP: if (!mouse_frozen) { keydown[e->key_code] = false; keypressed[e->key_code].pressed = false; keypressed[e->key_code].frame = 0; } break; case SAPP_EVENTTYPE_MOUSE_SCROLL: zoom_target *= 1.0f + (e->scroll_y / 4.0f) * 0.1f; zoom_target = clamp(zoom_target, 0.5f, 900.0f); break; case SAPP_EVENTTYPE_MOUSE_DOWN: if (e->mouse_button == SAPP_MOUSEBUTTON_LEFT) { mouse_pressed = true; mouse_pressed_frame = e->frame_count; } if (e->mouse_button == SAPP_MOUSEBUTTON_RIGHT) { right_mouse_down = true; } break; case SAPP_EVENTTYPE_MOUSE_UP: if (e->mouse_button == SAPP_MOUSEBUTTON_LEFT) { mouse_pressed = false; mouse_pressed_frame = 0; } if (e->mouse_button == SAPP_MOUSEBUTTON_RIGHT) { right_mouse_down = false; } break; case SAPP_EVENTTYPE_MOUSE_MOVE: if (!mouse_frozen) { mouse_pos = (V2){.x = e->mouse_x, .y = e->mouse_y}; } if (right_mouse_down) { funval += e->mouse_dx; Log("Funval %f\n", funval); } break; } } sapp_desc sokol_main(int argc, char *argv[]) { bool hosting = false; stm_setup(); ma_mutex_init(&server_info.info_mutex); server_info.world_save = "debug_world.bin"; if (argc > 1) { server_thread_handle = (void *)_beginthread(server, 0, (void *)&server_info); hosting = true; } (void)argv; return (sapp_desc){ .init_cb = init, .frame_cb = frame, .cleanup_cb = cleanup, .width = 640, .height = 480, .gl_force_gles2 = true, .window_title = hosting ? "Flight Hosting" : "Flight Not Hosting", .icon.sokol_default = true, .event_cb = event, .win32_console_attach = true, .sample_count = 4, // anti aliasing }; }