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set_fov: Add support for time-based transitions (#9705)
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@ -5998,15 +5998,18 @@ object you are working with still exists.
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* max: bubbles bar is not shown
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* See [Object properties] for more information
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* Is limited to range 0 ... 65535 (2^16 - 1)
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* `set_fov(fov, is_multiplier)`: Sets player's FOV
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* `set_fov(fov, is_multiplier, transition_time)`: Sets player's FOV
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* `fov`: FOV value.
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* `is_multiplier`: Set to `true` if the FOV value is a multiplier.
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Defaults to `false`.
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* Set to 0 to clear FOV override.
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* `get_fov()`:
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* Returns player's FOV override in degrees, and a boolean depending on whether
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the value is a multiplier.
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* Returns 0 as first value if player's FOV hasn't been overridden.
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* `transition_time`: If defined, enables smooth FOV transition.
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Interpreted as the time (in seconds) to reach target FOV.
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If set to 0, FOV change is instantaneous. Defaults to 0.
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* Set `fov` to 0 to clear FOV override.
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* `get_fov()`: Returns the following:
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* Server-sent FOV value. Returns 0 if an FOV override doesn't exist.
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* Boolean indicating whether the FOV value is a multiplier.
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* Time (in seconds) taken for the FOV transition. Set by `set_fov`.
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* `set_attribute(attribute, value)`: DEPRECATED, use get_meta() instead
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* Sets an extra attribute with value on player.
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* `value` must be a string, or a number which will be converted to a
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@ -86,6 +86,51 @@ Camera::~Camera()
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m_wieldmgr->drop();
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}
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void Camera::notifyFovChange()
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{
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LocalPlayer *player = m_client->getEnv().getLocalPlayer();
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assert(player);
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PlayerFovSpec spec = player->getFov();
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/*
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* Update m_old_fov_degrees first - it serves as the starting point of the
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* upcoming transition.
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*
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* If an FOV transition is already active, mark current FOV as the start of
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* the new transition. If not, set it to the previous transition's target FOV.
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*/
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if (m_fov_transition_active)
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m_old_fov_degrees = m_curr_fov_degrees;
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else
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m_old_fov_degrees = m_server_sent_fov ? m_target_fov_degrees : m_cache_fov;
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/*
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* Update m_server_sent_fov next - it corresponds to the target FOV of the
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* upcoming transition.
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*
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* Set it to m_cache_fov, if server-sent FOV is 0. Otherwise check if
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* server-sent FOV is a multiplier, and multiply it with m_cache_fov instead
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* of overriding.
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*/
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if (spec.fov == 0.0f) {
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m_server_sent_fov = false;
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m_target_fov_degrees = m_cache_fov;
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} else {
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m_server_sent_fov = true;
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m_target_fov_degrees = spec.is_multiplier ? m_cache_fov * spec.fov : spec.fov;
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}
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if (spec.transition_time > 0.0f)
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m_fov_transition_active = true;
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// If FOV smooth transition is active, initialize required variables
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if (m_fov_transition_active) {
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m_transition_time = spec.transition_time;
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m_fov_diff = m_target_fov_degrees - m_old_fov_degrees;
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}
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}
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bool Camera::successfullyCreated(std::string &error_message)
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{
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if (!m_playernode) {
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@ -462,33 +507,38 @@ void Camera::update(LocalPlayer* player, f32 frametime, f32 busytime, f32 tool_r
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m_camera_position = my_cp;
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/*
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* Apply server-sent FOV. If server doesn't enforce FOV,
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* check for zoom and set to zoom FOV.
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* Otherwise, default to m_cache_fov
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* Apply server-sent FOV, instantaneous or smooth transition.
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* If not, check for zoom and set to zoom FOV.
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* Otherwise, default to m_cache_fov.
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*/
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if (m_fov_transition_active) {
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// Smooth FOV transition
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// Dynamically calculate FOV delta based on frametimes
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f32 delta = (frametime / m_transition_time) * m_fov_diff;
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m_curr_fov_degrees += delta;
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f32 fov_degrees;
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PlayerFovSpec fov_spec = player->getFov();
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if (fov_spec.fov > 0.0f) {
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// If server-sent FOV is a multiplier, multiply
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// it with m_cache_fov instead of overriding
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if (fov_spec.is_multiplier)
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fov_degrees = m_cache_fov * fov_spec.fov;
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else
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fov_degrees = fov_spec.fov;
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// Mark transition as complete if target FOV has been reached
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if ((m_fov_diff > 0.0f && m_curr_fov_degrees >= m_target_fov_degrees) ||
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(m_fov_diff < 0.0f && m_curr_fov_degrees <= m_target_fov_degrees)) {
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m_fov_transition_active = false;
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m_curr_fov_degrees = m_target_fov_degrees;
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}
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} else if (m_server_sent_fov) {
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// Instantaneous FOV change
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m_curr_fov_degrees = m_target_fov_degrees;
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} else if (player->getPlayerControl().zoom && player->getZoomFOV() > 0.001f) {
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// Player requests zoom, apply zoom FOV
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fov_degrees = player->getZoomFOV();
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m_curr_fov_degrees = player->getZoomFOV();
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} else {
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// Set to client's selected FOV
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fov_degrees = m_cache_fov;
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m_curr_fov_degrees = m_cache_fov;
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}
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fov_degrees = rangelim(fov_degrees, 1.0f, 160.0f);
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m_curr_fov_degrees = rangelim(m_curr_fov_degrees, 1.0f, 160.0f);
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// FOV and aspect ratio
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const v2u32 &window_size = RenderingEngine::get_instance()->getWindowSize();
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m_aspect = (f32) window_size.X / (f32) window_size.Y;
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m_fov_y = fov_degrees * M_PI / 180.0;
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m_fov_y = m_curr_fov_degrees * M_PI / 180.0;
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// Increase vertical FOV on lower aspect ratios (<16:10)
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m_fov_y *= MYMAX(1.0, MYMIN(1.4, sqrt(16./10. / m_aspect)));
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m_fov_x = 2 * atan(m_aspect * tan(0.5 * m_fov_y));
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@ -112,6 +112,9 @@ public:
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return MYMAX(m_fov_x, m_fov_y);
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}
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// Notify about new server-sent FOV and initialize smooth FOV transition
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void notifyFovChange();
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// Checks if the constructor was able to create the scene nodes
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bool successfullyCreated(std::string &error_message);
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@ -186,6 +189,9 @@ private:
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Client *m_client;
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// Default Client FOV (as defined by the "fov" setting)
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f32 m_cache_fov;
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// Absolute camera position
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v3f m_camera_position;
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// Absolute camera direction
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@ -193,6 +199,14 @@ private:
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// Camera offset
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v3s16 m_camera_offset;
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// Server-sent FOV variables
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bool m_server_sent_fov = false;
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f32 m_curr_fov_degrees, m_old_fov_degrees, m_target_fov_degrees;
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// FOV transition variables
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bool m_fov_transition_active = false;
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f32 m_fov_diff, m_transition_time;
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v2f m_wieldmesh_offset = v2f(55.0f, -35.0f);
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v2f m_arm_dir;
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v2f m_cam_vel;
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@ -230,7 +244,6 @@ private:
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f32 m_cache_fall_bobbing_amount;
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f32 m_cache_view_bobbing_amount;
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f32 m_cache_fov;
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bool m_arm_inertia;
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std::list<Nametag *> m_nametags;
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@ -20,6 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "client/client.h"
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#include "util/base64.h"
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#include "client/camera.h"
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#include "chatmessage.h"
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#include "client/clientmedia.h"
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#include "log.h"
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@ -530,11 +531,21 @@ void Client::handleCommand_Movement(NetworkPacket* pkt)
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void Client::handleCommand_Fov(NetworkPacket *pkt)
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{
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f32 fov;
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bool is_multiplier;
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bool is_multiplier = false;
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f32 transition_time = 0.0f;
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*pkt >> fov >> is_multiplier;
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// Wrap transition_time extraction within a
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// try-catch to preserve backwards compat
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try {
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*pkt >> transition_time;
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} catch (PacketError &e) {};
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LocalPlayer *player = m_env.getLocalPlayer();
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player->setFov({ fov, is_multiplier });
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assert(player);
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player->setFov({ fov, is_multiplier, transition_time });
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m_camera->notifyFovChange();
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}
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void Client::handleCommand_HP(NetworkPacket *pkt)
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@ -384,8 +384,9 @@ enum ToClientCommand
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/*
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Sends an FOV override/multiplier to client.
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float fov
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f32 fov
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bool is_multiplier
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f32 transition_time
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*/
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TOCLIENT_DEATHSCREEN = 0x37,
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12
src/player.h
12
src/player.h
@ -35,7 +35,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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struct PlayerFovSpec
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{
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f32 fov;
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// Whether to multiply the client's FOV or to override it
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bool is_multiplier;
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// The time to be take to trasition to the new FOV value.
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// Transition is instantaneous if omitted. Omitted by default.
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f32 transition_time;
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};
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struct PlayerControl
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@ -186,12 +192,12 @@ public:
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void setFov(const PlayerFovSpec &spec)
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{
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m_fov_spec = spec;
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m_fov_override_spec = spec;
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}
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const PlayerFovSpec &getFov() const
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{
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return m_fov_spec;
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return m_fov_override_spec;
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}
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u32 keyPressed = 0;
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@ -208,7 +214,7 @@ protected:
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char m_name[PLAYERNAME_SIZE];
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v3f m_speed;
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u16 m_wield_index = 0;
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PlayerFovSpec m_fov_spec = { 0.0f, false };
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PlayerFovSpec m_fov_override_spec = { 0.0f, false, 0.0f };
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std::vector<HudElement *> hud;
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private:
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@ -1249,7 +1249,7 @@ int ObjectRef::l_set_look_yaw(lua_State *L)
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return 1;
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}
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// set_fov(self, degrees[, is_multiplier])
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// set_fov(self, degrees[, is_multiplier, transition_time])
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int ObjectRef::l_set_fov(lua_State *L)
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{
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NO_MAP_LOCK_REQUIRED;
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@ -1258,7 +1258,11 @@ int ObjectRef::l_set_fov(lua_State *L)
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if (!player)
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return 0;
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player->setFov({ static_cast<f32>(luaL_checknumber(L, 2)), readParam<bool>(L, 3) });
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player->setFov({
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static_cast<f32>(luaL_checknumber(L, 2)),
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readParam<bool>(L, 3, false),
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lua_isnumber(L, 4) ? static_cast<f32>(luaL_checknumber(L, 4)) : 0.0f
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});
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getServer(L)->SendPlayerFov(player->getPeerId());
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return 0;
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@ -1276,8 +1280,9 @@ int ObjectRef::l_get_fov(lua_State *L)
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PlayerFovSpec fov_spec = player->getFov();
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lua_pushnumber(L, fov_spec.fov);
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lua_pushboolean(L, fov_spec.is_multiplier);
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lua_pushnumber(L, fov_spec.transition_time);
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return 2;
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return 3;
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}
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// set_breath(self, breath)
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@ -1892,10 +1892,10 @@ void Server::SendMovePlayer(session_t peer_id)
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void Server::SendPlayerFov(session_t peer_id)
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{
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NetworkPacket pkt(TOCLIENT_FOV, 4 + 1, peer_id);
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NetworkPacket pkt(TOCLIENT_FOV, 4 + 1 + 4, peer_id);
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PlayerFovSpec fov_spec = m_env->getPlayer(peer_id)->getFov();
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pkt << fov_spec.fov << fov_spec.is_multiplier;
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pkt << fov_spec.fov << fov_spec.is_multiplier << fov_spec.transition_time;
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Send(&pkt);
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}
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