utility.h: Change Buffer's interface to be more compatible with SharedBuffer's interf...
[oweals/minetest.git] / src / camera.cpp
index 7f5931bddae10ed16091d99f09503f2f019dc629..a32336714fdadcd4a53db4b55d7a5ae79b4bbf5b 100644 (file)
@@ -25,14 +25,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "player.h"
 #include "tile.h"
 #include <cmath>
-
-const s32 BOBFRAMES = 0x1000000; // must be a power of two
+#include <SAnimatedMesh.h>
+#include "settings.h"
 
 Camera::Camera(scene::ISceneManager* smgr, MapDrawControl& draw_control):
        m_smgr(smgr),
        m_playernode(NULL),
        m_headnode(NULL),
        m_cameranode(NULL),
+
+       m_wieldmgr(NULL),
+       m_wieldnode(NULL),
+
        m_draw_control(draw_control),
        m_viewing_range_min(5.0),
        m_viewing_range_max(5.0),
@@ -57,7 +61,7 @@ Camera::Camera(scene::ISceneManager* smgr, MapDrawControl& draw_control):
        m_view_bobbing_speed(0),
 
        m_digging_anim(0),
-       m_digging_speed(0)
+       m_digging_button(-1)
 {
        //dstream<<__FUNCTION_NAME<<std::endl;
 
@@ -67,13 +71,20 @@ Camera::Camera(scene::ISceneManager* smgr, MapDrawControl& draw_control):
        m_headnode = smgr->addEmptySceneNode(m_playernode);
        m_cameranode = smgr->addCameraSceneNode(smgr->getRootSceneNode());
        m_cameranode->bindTargetAndRotation(true);
-       m_wieldnode = new ExtrudedSpriteSceneNode(m_headnode, smgr, -1, v3f(1.3, -1, 2), v3f(-20, -100, 20), v3f(1));
+
+       // This needs to be in its own scene manager. It is drawn after
+       // all other 3D scene nodes and before the GUI.
+       m_wieldmgr = smgr->createNewSceneManager();
+       m_wieldmgr->addCameraSceneNode();
+       m_wieldnode = new ExtrudedSpriteSceneNode(m_wieldmgr->getRootSceneNode(), m_wieldmgr);
 
        updateSettings();
 }
 
 Camera::~Camera()
 {
+       m_wieldmgr->drop();
+       m_wieldnode->drop();
 }
 
 bool Camera::successfullyCreated(std::wstring& error_message)
@@ -93,24 +104,84 @@ bool Camera::successfullyCreated(std::wstring& error_message)
                error_message = L"Failed to create the camera scene node";
                return false;
        }
+       if (m_wieldmgr == NULL)
+       {
+               error_message = L"Failed to create the wielded item scene manager";
+               return false;
+       }
+       if (m_wieldnode == NULL)
+       {
+               error_message = L"Failed to create the wielded item scene node";
+               return false;
+       }
        return true;
 }
 
+// Returns the fractional part of x
+inline f32 my_modf(f32 x)
+{
+       double dummy;
+       return modf(x, &dummy);
+}
+
 void Camera::step(f32 dtime)
 {
        if (m_view_bobbing_state != 0)
        {
-               s32 offset = MYMAX(dtime * m_view_bobbing_speed * 0.035 * BOBFRAMES, 1);
+               //f32 offset = dtime * m_view_bobbing_speed * 0.035;
+               f32 offset = dtime * m_view_bobbing_speed * 0.030;
                if (m_view_bobbing_state == 2)
                {
+#if 0
                        // Animation is getting turned off
-                       s32 subanim = (m_view_bobbing_anim & (BOBFRAMES/2-1));
-                       if (subanim < BOBFRAMES/4)
-                               offset = -1 *  MYMIN(offset, subanim);
+                       if (m_view_bobbing_anim < 0.5)
+                               m_view_bobbing_anim -= offset;
                        else
-                               offset = MYMIN(offset, BOBFRAMES/2 - subanim);
+                               m_view_bobbing_anim += offset;
+                       if (m_view_bobbing_anim <= 0 || m_view_bobbing_anim >= 1)
+                       {
+                               m_view_bobbing_anim = 0;
+                               m_view_bobbing_state = 0;
+                       }
+#endif
+#if 1
+                       // Animation is getting turned off
+                       if(m_view_bobbing_anim < 0.25){
+                               m_view_bobbing_anim -= offset;
+                       } else if(m_view_bobbing_anim > 0.75){
+                               m_view_bobbing_anim += offset;
+                       } if(m_view_bobbing_anim < 0.5){
+                               m_view_bobbing_anim += offset;
+                               if(m_view_bobbing_anim > 0.5)
+                                       m_view_bobbing_anim = 0.5;
+                       } else {
+                               m_view_bobbing_anim -= offset;
+                               if(m_view_bobbing_anim < 0.5)
+                                       m_view_bobbing_anim = 0.5;
+                       }
+                       if(m_view_bobbing_anim <= 0 || m_view_bobbing_anim >= 1 ||
+                                       fabs(m_view_bobbing_anim - 0.5) < 0.01)
+                       {
+                               m_view_bobbing_anim = 0;
+                               m_view_bobbing_state = 0;
+                       }
+#endif
+               }
+               else
+               {
+                       m_view_bobbing_anim = my_modf(m_view_bobbing_anim + offset);
+               }
+       }
+
+       if (m_digging_button != -1)
+       {
+               f32 offset = dtime * 3.5;
+               m_digging_anim += offset;
+               if (m_digging_anim >= 1)
+               {
+                       m_digging_anim = 0;
+                       m_digging_button = -1;
                }
-               m_view_bobbing_anim = (m_view_bobbing_anim + offset) & (BOBFRAMES-1);
        }
 }
 
@@ -122,8 +193,7 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize)
        m_playernode->updateAbsolutePosition();
 
        // Set head node transformation
-       v3f eye_offset = player->getEyePosition() - player->getPosition();
-       m_headnode->setPosition(eye_offset);
+       m_headnode->setPosition(player->getEyeOffset());
        m_headnode->setRotation(v3f(player->getPitch(), 0, 0));
        m_headnode->updateAbsolutePosition();
 
@@ -132,24 +202,33 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize)
        v3f rel_cam_target = v3f(0,0,1);
        v3f rel_cam_up = v3f(0,1,0);
 
-       s32 bobframe = m_view_bobbing_anim & (BOBFRAMES/2-1);
-       if (bobframe != 0)
+       if (m_view_bobbing_anim != 0)
        {
-               f32 bobfrac = (f32) bobframe / (BOBFRAMES/2);
-               f32 bobdir = (m_view_bobbing_anim < (BOBFRAMES/2)) ? 1.0 : -1.0;
+               f32 bobfrac = my_modf(m_view_bobbing_anim * 2);
+               f32 bobdir = (m_view_bobbing_anim < 0.5) ? 1.0 : -1.0;
 
                #if 1
                f32 bobknob = 1.2;
                f32 bobtmp = sin(pow(bobfrac, bobknob) * PI);
+               //f32 bobtmp2 = cos(pow(bobfrac, bobknob) * PI);
 
                v3f bobvec = v3f(
-                       bobdir * sin(bobfrac * PI),
-                       0.8 * bobtmp * bobtmp,
+                       0.3 * bobdir * sin(bobfrac * PI),
+                       -0.28 * bobtmp * bobtmp,
                        0.);
 
-               rel_cam_pos += 0.03 * bobvec;
-               rel_cam_target += 0.045 * bobvec;
-               rel_cam_up.rotateXYBy(0.03 * bobdir * bobtmp * PI);
+               //rel_cam_pos += 0.2 * bobvec;
+               //rel_cam_target += 0.03 * bobvec;
+               //rel_cam_up.rotateXYBy(0.02 * bobdir * bobtmp * PI);
+               float f = 1.0;
+               f *= g_settings->getFloat("view_bobbing_amount");
+               rel_cam_pos += bobvec * f;
+               //rel_cam_target += 0.995 * bobvec * f;
+               rel_cam_target += bobvec * f;
+               rel_cam_target.Z -= 0.005 * bobvec.Z * f;
+               //rel_cam_target.X -= 0.005 * bobvec.X * f;
+               //rel_cam_target.Y -= 0.005 * bobvec.Y * f;
+               rel_cam_up.rotateXYBy(-0.03 * bobdir * bobtmp * PI * f);
                #else
                f32 angle_deg = 1 * bobdir * sin(bobfrac * PI);
                f32 angle_rad = angle_deg * PI / 180;
@@ -167,17 +246,16 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize)
 
        // Compute absolute camera position and target
        m_headnode->getAbsoluteTransformation().transformVect(m_camera_position, rel_cam_pos);
-       m_headnode->getAbsoluteTransformation().transformVect(m_camera_direction, rel_cam_target);
-       m_camera_direction -= m_camera_position;
+       m_headnode->getAbsoluteTransformation().rotateVect(m_camera_direction, rel_cam_target - rel_cam_pos);
 
        v3f abs_cam_up;
-       m_headnode->getAbsoluteTransformation().transformVect(abs_cam_up, rel_cam_pos + rel_cam_up);
-       abs_cam_up -= m_camera_position;
+       m_headnode->getAbsoluteTransformation().rotateVect(abs_cam_up, rel_cam_up);
 
        // Set camera node transformation
        m_cameranode->setPosition(m_camera_position);
        m_cameranode->setUpVector(abs_cam_up);
-       m_cameranode->setTarget(m_camera_position + m_camera_direction);
+       // *100.0 helps in large map coordinates
+       m_cameranode->setTarget(m_camera_position + 100 * m_camera_direction);
 
        // FOV and and aspect ratio
        m_aspect = (f32)screensize.X / (f32) screensize.Y;
@@ -188,6 +266,33 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize)
        // Some more allowance that m_viewing_range_max * BS because of active objects etc.
        m_cameranode->setFarValue(m_viewing_range_max * BS * 10);
 
+       // Position the wielded item
+       v3f wield_position = v3f(45, -35, 65);
+       v3f wield_rotation = v3f(-100, 110, -100);
+       if (m_digging_button != -1)
+       {
+               f32 digfrac = m_digging_anim;
+               wield_position.X -= 30 * sin(pow(digfrac, 0.8f) * PI);
+               wield_position.Y += 15 * sin(digfrac * 2 * PI);
+               wield_position.Z += 5 * digfrac;
+
+               // Euler angles are PURE EVIL, so why not use quaternions?
+               core::quaternion quat_begin(wield_rotation * core::DEGTORAD);
+               core::quaternion quat_end(v3f(90, -10, -130) * core::DEGTORAD);
+               core::quaternion quat_slerp;
+               quat_slerp.slerp(quat_begin, quat_end, sin(digfrac * PI));
+               quat_slerp.toEuler(wield_rotation);
+               wield_rotation *= core::RADTODEG;
+       }
+       else {
+               f32 bobfrac = my_modf(m_view_bobbing_anim);
+               wield_position.X -= sin(bobfrac*PI*2.0) * 3.0;
+               wield_position.Y += sin(my_modf(bobfrac*2.0)*PI) * 3.0;
+       }
+       m_wieldnode->setPosition(wield_position);
+       m_wieldnode->setRotation(wield_rotation);
+       m_wieldnode->updateLight(player->light);
+
        // Render distance feedback loop
        updateViewingRange(frametime);
 
@@ -197,8 +302,8 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize)
        v3f speed = player->getSpeed();
        if ((hypot(speed.X, speed.Z) > BS) &&
                (player->touching_ground) &&
-               (g_settings.getBool("view_bobbing") == true) &&
-               (g_settings.getBool("free_move") == false))
+               (g_settings->getBool("view_bobbing") == true) &&
+               (g_settings->getBool("free_move") == false))
        {
                // Start animation
                m_view_bobbing_state = 1;
@@ -208,12 +313,7 @@ void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize)
        {
                // Stop animation
                m_view_bobbing_state = 2;
-               m_view_bobbing_speed = 100;
-       }
-       else if (m_view_bobbing_state == 2 && bobframe == 0)
-       {
-               // Stop animation completed
-               m_view_bobbing_state = 0;
+               m_view_bobbing_speed = 60;
        }
 }
 
@@ -242,7 +342,7 @@ void Camera::updateViewingRange(f32 frametime_in)
                        <<std::endl;*/
 
        m_draw_control.wanted_min_range = m_viewing_range_min;
-       m_draw_control.wanted_max_blocks = (1.5*m_draw_control.blocks_would_have_drawn)+1;
+       m_draw_control.wanted_max_blocks = (2.0*m_draw_control.blocks_would_have_drawn)+1;
        if (m_draw_control.wanted_max_blocks < 10)
                m_draw_control.wanted_max_blocks = 10;
 
@@ -264,7 +364,9 @@ void Camera::updateViewingRange(f32 frametime_in)
        //dstream<<"wanted_frametime_change="<<wanted_frametime_change<<std::endl;
 
        // If needed frametime change is small, just return
-       if (fabs(wanted_frametime_change) < m_wanted_frametime*0.4)
+       // This value was 0.4 for many months until 2011-10-18 by c55;
+       // Let's see how this works out.
+       if (fabs(wanted_frametime_change) < m_wanted_frametime*0.33)
        {
                //dstream<<"ignoring small wanted_frametime_change"<<std::endl;
                return;
@@ -330,18 +432,18 @@ void Camera::updateViewingRange(f32 frametime_in)
 
 void Camera::updateSettings()
 {
-       m_viewing_range_min = g_settings.getS16("viewing_range_nodes_min");
+       m_viewing_range_min = g_settings->getS16("viewing_range_nodes_min");
        m_viewing_range_min = MYMAX(5.0, m_viewing_range_min);
 
-       m_viewing_range_max = g_settings.getS16("viewing_range_nodes_max");
+       m_viewing_range_max = g_settings->getS16("viewing_range_nodes_max");
        m_viewing_range_max = MYMAX(m_viewing_range_min, m_viewing_range_max);
 
-       f32 fov_degrees = g_settings.getFloat("fov");
+       f32 fov_degrees = g_settings->getFloat("fov");
        fov_degrees = MYMAX(fov_degrees, 10.0);
        fov_degrees = MYMIN(fov_degrees, 170.0);
        m_fov_y = fov_degrees * PI / 180.0;
 
-       f32 wanted_fps = g_settings.getFloat("wanted_fps");
+       f32 wanted_fps = g_settings->getFloat("wanted_fps");
        wanted_fps = MYMAX(wanted_fps, 1.0);
        m_wanted_frametime = 1.0 / wanted_fps;
 }
@@ -361,7 +463,7 @@ void Camera::wield(const InventoryItem* item)
                        if (content_features(content).solidness || content_features(content).visual_solidness)
                        {
                                m_wieldnode->setCube(content_features(content).tiles);
-                               m_wieldnode->setScale(v3f(0.9));
+                               m_wieldnode->setScale(v3f(30));
                                isCube = true;
                        }
                }
@@ -370,7 +472,7 @@ void Camera::wield(const InventoryItem* item)
                if (!isCube)
                {
                        m_wieldnode->setSprite(item->getImageRaw());
-                       m_wieldnode->setScale(v3f(1.2));
+                       m_wieldnode->setScale(v3f(40));
                }
 
                m_wieldnode->setVisible(true);
@@ -378,14 +480,26 @@ void Camera::wield(const InventoryItem* item)
        else
        {
                // Bare hands
-               dstream << "bare hands" << std::endl;
                m_wieldnode->setVisible(false);
        }
 }
 
-void Camera::setDigging(bool digging)
+void Camera::setDigging(s32 button)
+{
+       if (m_digging_button == -1)
+               m_digging_button = button;
+}
+
+void Camera::drawWieldedTool()
 {
-       // TODO
+       m_wieldmgr->getVideoDriver()->clearZBuffer();
+
+       scene::ICameraSceneNode* cam = m_wieldmgr->getActiveCamera();
+       cam->setAspectRatio(m_cameranode->getAspectRatio());
+       cam->setFOV(m_cameranode->getFOV());
+       cam->setNearValue(0.1);
+       cam->setFarValue(100);
+       m_wieldmgr->drawAll();
 }
 
 
@@ -403,6 +517,7 @@ ExtrudedSpriteSceneNode::ExtrudedSpriteSceneNode(
        m_thickness = 0.1;
        m_cubemesh = NULL;
        m_is_cube = false;
+       m_light = LIGHT_MAX;
 }
 
 ExtrudedSpriteSceneNode::~ExtrudedSpriteSceneNode()
@@ -450,6 +565,7 @@ void ExtrudedSpriteSceneNode::setSprite(video::ITexture* texture)
        m_meshnode->getMaterial(0).MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
        m_meshnode->setVisible(true);
        m_is_cube = false;
+       updateLight(m_light);
 }
 
 void ExtrudedSpriteSceneNode::setCube(const TileSpec tiles[6])
@@ -477,6 +593,18 @@ void ExtrudedSpriteSceneNode::setCube(const TileSpec tiles[6])
        }
        m_meshnode->setVisible(true);
        m_is_cube = true;
+       updateLight(m_light);
+}
+
+void ExtrudedSpriteSceneNode::updateLight(u8 light)
+{
+       m_light = light;
+
+       u8 li = decode_light(light);
+       // Set brightness one lower than incoming light
+       diminish_light(li);
+       video::SColor color(255,li,li,li);
+       setMeshVerticesColor(m_meshnode->getMesh(), color);
 }
 
 void ExtrudedSpriteSceneNode::removeSpriteFromCache(video::ITexture* texture)