efl

test_velocity.c
211 строк · 7.4 Кб
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "ephysics_test.h"
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typedef struct _Velocity_Data Velocity_Data;
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struct _Velocity_Data {
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     Test_Data base;
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     EPhysics_Body *body;
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     double old_vx;
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     double old_vy;
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     double old_vaz;
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     double last_time;
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};
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static Eina_Bool
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_on_keydown(void *data, Evas_Object *obj __UNUSED__, Evas_Object *src __UNUSED__, Evas_Callback_Type type, void *event_info)
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{
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   Evas_Event_Key_Down *ev = event_info;
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   EPhysics_Body *body = data;
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   if (type != EVAS_CALLBACK_KEY_UP)
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     return EINA_FALSE;
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   if (strcmp(ev->key, "Up") == 0)
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     ephysics_body_central_impulse_apply(body, 0, -300, 0);
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   else if (strcmp(ev->key, "Down") == 0)
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     ephysics_body_central_impulse_apply(body, 0, 300, 0);
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   else if (strcmp(ev->key, "Right") == 0)
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     ephysics_body_central_impulse_apply(body, 300, 0, 0);
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   else if (strcmp(ev->key, "Left") == 0)
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     ephysics_body_central_impulse_apply(body, -300, 0, 0);
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   return EINA_TRUE;
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}
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static void
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_update_vel_cb(void *data, EPhysics_Body *body, void *event_info __UNUSED__)
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{
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   Velocity_Data *velocity_data = data;
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   Eina_Bool first_call = EINA_FALSE;
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   double vx, vy, ax, ay, vaz, aaz;
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   double time_now, delta_time;
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   char buff[64];
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   if (!velocity_data->last_time)
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     first_call = EINA_TRUE;
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   time_now = ecore_time_get();
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   delta_time = time_now - velocity_data->last_time;
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   velocity_data->last_time = time_now;
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   ephysics_body_angular_velocity_get(body, NULL, NULL, &vaz);
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   ephysics_body_linear_velocity_get(body, &vx, &vy, NULL);
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   vx = (vx > 0 || vx <= -0.01) ? vx : 0;
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   vy = (vy > 0 || vy <= -0.01) ? vy : 0;
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   aaz = (vaz - velocity_data->old_vaz) / delta_time;
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   velocity_data->old_vaz = vaz;
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   ax = (vx - velocity_data->old_vx) / delta_time;
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   velocity_data->old_vx = vx;
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   ay = (vy - velocity_data->old_vy) / delta_time;
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   velocity_data->old_vy = vy;
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   if (first_call) return;
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   DBG("Delta Time: %0.3lf", delta_time);
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   snprintf(buff, sizeof(buff), "Linear velocity: %.2f, %.2f", vx, vy);
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   elm_layout_text_set(velocity_data->base.layout, "linear_vel", buff);
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   snprintf(buff, sizeof(buff), "Linear acceleration: %.2f, %.2f", ax, ay);
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   elm_layout_text_set(velocity_data->base.layout, "linear_acc", buff);
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   DBG("Vx: %0.3lf p/s Ax: %0.3lf p/s/s", vx, ax);
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   DBG("Vy: %0.3lf p/s Ay: %0.3lf p/s/s", vy, ay);
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   snprintf(buff, sizeof(buff), "Angular velocity: %.2f", vaz);
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   elm_layout_text_set(velocity_data->base.layout, "angular_vel", buff);
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   snprintf(buff, sizeof(buff), "Angular acceleration: %.2f", aaz);
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   elm_layout_text_set(velocity_data->base.layout, "angular_acc", buff);
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   DBG("Va: %0.3lf d/s Aa: %0.3lf d/s/s", vaz, aaz);
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}
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static void
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_world_populate(Velocity_Data *velocity_data)
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{
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   Evas_Object *sphere, *shadow;
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   EPhysics_Body *sphere_body;
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   shadow = elm_layout_add(velocity_data->base.win);
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   elm_layout_file_set(
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      shadow, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "shadow-ball");
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   evas_object_move(shadow, WIDTH / 3, FLOOR_Y);
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   evas_object_resize(shadow, 54, 3);
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   evas_object_show(shadow);
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   velocity_data->base.evas_objs = eina_list_append(
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      velocity_data->base.evas_objs, shadow);
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   sphere = elm_image_add(velocity_data->base.win);
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   elm_image_file_set(
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      sphere, PACKAGE_DATA_DIR "/" EPHYSICS_TEST_THEME ".edj", "red-ball");
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   evas_object_move(sphere, WIDTH / 3, FLOOR_Y - 54);
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   evas_object_resize(sphere, 54, 54);
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   evas_object_show(sphere);
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   velocity_data->base.evas_objs = eina_list_append(
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      velocity_data->base.evas_objs, sphere);
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   sphere_body = ephysics_body_sphere_add(velocity_data->base.world);
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   ephysics_body_evas_object_set(sphere_body, sphere, EINA_TRUE);
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   ephysics_body_restitution_set(sphere_body, 0.8);
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   ephysics_body_friction_set(sphere_body, 1);
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   ephysics_body_sleeping_threshold_set(sphere_body, 0, 0);
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   ephysics_body_damping_set(sphere_body, 0.2, 0.2);
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   ephysics_body_event_callback_add(sphere_body, EPHYSICS_CALLBACK_BODY_UPDATE,
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                                    update_object_cb, shadow);
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   ephysics_body_event_callback_add(sphere_body, EPHYSICS_CALLBACK_BODY_UPDATE,
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                                    _update_vel_cb, velocity_data);
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   ephysics_body_event_callback_add(sphere_body, EPHYSICS_CALLBACK_BODY_STOPPED,
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                                    _update_vel_cb, velocity_data);
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   velocity_data->base.bodies = eina_list_append(velocity_data->base.bodies,
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                                                 sphere_body);
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   velocity_data->body = sphere_body;
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}
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static void
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_restart(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
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{
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   Velocity_Data *velocity_data = data;
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   elm_object_event_callback_del(velocity_data->base.win, _on_keydown,
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                                 velocity_data->body);
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   DBG("Restart pressed");
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   test_clean((Test_Data *)velocity_data);
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   _world_populate(velocity_data);
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   velocity_data->old_vx = 0;
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   velocity_data->old_vy = 0;
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   velocity_data->old_vaz = 0;
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   velocity_data->last_time = 0;
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   elm_object_event_callback_add(velocity_data->base.win, _on_keydown,
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                                 velocity_data->body);
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}
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static void
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_win_del(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
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{
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   Velocity_Data *velocity_data = data;
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   test_clean((Test_Data *)velocity_data);
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   evas_object_del(velocity_data->base.layout);
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   ephysics_world_del(velocity_data->base.world);
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   free(velocity_data);
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   ephysics_shutdown();
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}
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void
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test_velocity(void *data __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
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{
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   Velocity_Data *velocity_data;
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   EPhysics_Body *boundary;
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   EPhysics_World *world;
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   if (!ephysics_init())
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     return;
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   velocity_data = calloc(1, sizeof(Velocity_Data));
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   if (!velocity_data)
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     {
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        ERR("Failed to create test data");
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        ephysics_shutdown();
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        return;
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     }
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   test_win_add((Test_Data *)velocity_data, "Velocity Getters", EINA_FALSE);
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   evas_object_event_callback_add(velocity_data->base.win, EVAS_CALLBACK_DEL,
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                                  _win_del, velocity_data);
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   elm_layout_signal_callback_add(velocity_data->base.layout, "restart",
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                                  "test-theme", _restart, velocity_data);
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   elm_object_signal_emit(velocity_data->base.layout, "borders,show",
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                          "ephysics_test");
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   elm_object_signal_emit(velocity_data->base.layout, "arrows,show",
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                          "ephysics_test");
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   elm_object_signal_emit(velocity_data->base.layout, "velocity,show",
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                          "ephysics_test");
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   world = ephysics_world_new();
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   ephysics_world_render_geometry_set(world, 50, 40, -50,
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                                      WIDTH - 100, FLOOR_Y - 40, DEPTH);
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   velocity_data->base.world = world;
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   boundary = ephysics_body_bottom_boundary_add(velocity_data->base.world);
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   ephysics_body_restitution_set(boundary, 0.65);
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   ephysics_body_friction_set(boundary, 4);
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   boundary = ephysics_body_right_boundary_add(velocity_data->base.world);
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   ephysics_body_restitution_set(boundary, 0.4);
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   ephysics_body_friction_set(boundary, 3);
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   boundary = ephysics_body_left_boundary_add(velocity_data->base.world);
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   ephysics_body_restitution_set(boundary, 0.4);
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   ephysics_body_friction_set(boundary, 3);
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   ephysics_body_top_boundary_add(velocity_data->base.world);
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   _world_populate(velocity_data);
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   elm_object_event_callback_add(velocity_data->base.win, _on_keydown,
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                                 velocity_data->body);
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}
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