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Add compass HUD element (#9312)
Co-authored-by: Jean-Patrick Guerrero <jeanpatrick.guerrero@gmail.com> Co-authored-by: Pierre-Yves Rollo <dev@pyrollo.com> Co-authored-by: SmallJoker <SmallJoker@users.noreply.github.com>
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@ -1451,7 +1451,23 @@ Same as `image`, but does not accept a `position`; the position is instead deter
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* `world_pos`: World position of the waypoint.
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* `offset`: offset in pixels from position.
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### `compass`
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Displays an image oriented or translated according to current heading direction.
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* `size`: The size of this element. Negative values represent percentage
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of the screen; e.g. `x=-100` means 100% (width).
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* `scale`: Scale of the translated image (used only for dir = 2 or dir = 3).
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* `text`: The name of the texture to use.
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* `alignment`: The alignment of the image.
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* `offset`: Offset in pixels from position.
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* `dir`: How the image is rotated/translated:
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* 0 - Rotate as heading direction
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* 1 - Rotate in reverse direction
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* 2 - Translate as landscape direction
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* 3 - Translate in reverse direction
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If translation is chosen, texture is repeated horizontally to fill the whole element.
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Representations of simple things
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================================
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@ -7968,7 +7984,7 @@ Used by `Player:hud_add`. Returned by `Player:hud_get`.
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{
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hud_elem_type = "image", -- See HUD element types
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-- Type of element, can be "image", "text", "statbar", or "inventory"
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-- Type of element, can be "image", "text", "statbar", "inventory" or "compass"
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position = {x=0.5, y=0.5},
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-- Left corner position of element
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@ -114,6 +114,28 @@ Hud::Hud(gui::IGUIEnvironment *guienv, Client *client, LocalPlayer *player,
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} else {
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m_selection_material.MaterialType = video::EMT_SOLID;
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}
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// Prepare mesh for compass drawing
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m_rotation_mesh_buffer.Vertices.set_used(4);
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m_rotation_mesh_buffer.Indices.set_used(6);
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video::SColor white(255, 255, 255, 255);
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v3f normal(0.f, 0.f, 1.f);
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m_rotation_mesh_buffer.Vertices[0] = video::S3DVertex(v3f(-1.f, -1.f, 0.f), normal, white, v2f(0.f, 1.f));
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m_rotation_mesh_buffer.Vertices[1] = video::S3DVertex(v3f(-1.f, 1.f, 0.f), normal, white, v2f(0.f, 0.f));
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m_rotation_mesh_buffer.Vertices[2] = video::S3DVertex(v3f( 1.f, 1.f, 0.f), normal, white, v2f(1.f, 0.f));
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m_rotation_mesh_buffer.Vertices[3] = video::S3DVertex(v3f( 1.f, -1.f, 0.f), normal, white, v2f(1.f, 1.f));
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m_rotation_mesh_buffer.Indices[0] = 0;
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m_rotation_mesh_buffer.Indices[1] = 1;
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m_rotation_mesh_buffer.Indices[2] = 2;
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m_rotation_mesh_buffer.Indices[3] = 2;
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m_rotation_mesh_buffer.Indices[4] = 3;
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m_rotation_mesh_buffer.Indices[5] = 0;
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m_rotation_mesh_buffer.getMaterial().Lighting = false;
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m_rotation_mesh_buffer.getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
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}
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Hud::~Hud()
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@ -423,6 +445,54 @@ void Hud::drawLuaElements(const v3s16 &camera_offset)
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core::rect<s32>(core::position2d<s32>(0,0), imgsize),
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NULL, colors, true);
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break; }
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case HUD_ELEM_COMPASS: {
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video::ITexture *texture = tsrc->getTexture(e->text);
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if (!texture)
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continue;
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// Positionning :
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v2s32 dstsize(e->size.X, e->size.Y);
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if (e->size.X < 0)
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dstsize.X = m_screensize.X * (e->size.X * -0.01);
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if (e->size.Y < 0)
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dstsize.Y = m_screensize.Y * (e->size.Y * -0.01);
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if (dstsize.X <= 0 || dstsize.Y <= 0)
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return; // Avoid zero divides
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// Angle according to camera view
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v3f fore(0.f, 0.f, 1.f);
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scene::ICameraSceneNode *cam = RenderingEngine::get_scene_manager()->getActiveCamera();
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cam->getAbsoluteTransformation().rotateVect(fore);
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int angle = - fore.getHorizontalAngle().Y;
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// Limit angle and ajust with given offset
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angle = (angle + (int)e->number) % 360;
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core::rect<s32> dstrect(0, 0, dstsize.X, dstsize.Y);
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dstrect += pos + v2s32(
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(e->align.X - 1.0) * dstsize.X / 2,
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(e->align.Y - 1.0) * dstsize.Y / 2) +
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v2s32(e->offset.X * m_hud_scaling, e->offset.Y * m_hud_scaling);
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switch (e->dir) {
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case HUD_COMPASS_ROTATE:
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drawCompassRotate(e, texture, dstrect, angle);
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break;
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case HUD_COMPASS_ROTATE_REVERSE:
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drawCompassRotate(e, texture, dstrect, -angle);
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break;
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case HUD_COMPASS_TRANSLATE:
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drawCompassTranslate(e, texture, dstrect, angle);
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break;
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case HUD_COMPASS_TRANSLATE_REVERSE:
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drawCompassTranslate(e, texture, dstrect, -angle);
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break;
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default:
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break;
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}
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break; }
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default:
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infostream << "Hud::drawLuaElements: ignoring drawform " << e->type <<
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" of hud element ID " << i << " due to unrecognized type" << std::endl;
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@ -430,6 +500,76 @@ void Hud::drawLuaElements(const v3s16 &camera_offset)
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}
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}
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void Hud::drawCompassTranslate(HudElement *e, video::ITexture *texture,
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const core::rect<s32> &rect, int angle)
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{
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const video::SColor color(255, 255, 255, 255);
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const video::SColor colors[] = {color, color, color, color};
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// Compute source image scaling
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core::dimension2di imgsize(texture->getOriginalSize());
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core::rect<s32> srcrect(0, 0, imgsize.Width, imgsize.Height);
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v2s32 dstsize(rect.getHeight() * e->scale.X * imgsize.Width / imgsize.Height,
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rect.getHeight() * e->scale.Y);
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// Avoid infinite loop
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if (dstsize.X <= 0 || dstsize.Y <= 0)
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return;
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core::rect<s32> tgtrect(0, 0, dstsize.X, dstsize.Y);
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tgtrect += v2s32(
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(rect.getWidth() - dstsize.X) / 2,
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(rect.getHeight() - dstsize.Y) / 2) +
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rect.UpperLeftCorner;
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int offset = angle * dstsize.X / 360;
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tgtrect += v2s32(offset, 0);
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// Repeat image as much as needed
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while (tgtrect.UpperLeftCorner.X > rect.UpperLeftCorner.X)
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tgtrect -= v2s32(dstsize.X, 0);
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draw2DImageFilterScaled(driver, texture, tgtrect, srcrect, &rect, colors, true);
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tgtrect += v2s32(dstsize.X, 0);
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while (tgtrect.UpperLeftCorner.X < rect.LowerRightCorner.X) {
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draw2DImageFilterScaled(driver, texture, tgtrect, srcrect, &rect, colors, true);
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tgtrect += v2s32(dstsize.X, 0);
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}
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}
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void Hud::drawCompassRotate(HudElement *e, video::ITexture *texture,
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const core::rect<s32> &rect, int angle)
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{
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core::dimension2di imgsize(texture->getOriginalSize());
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core::rect<s32> oldViewPort = driver->getViewPort();
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core::matrix4 oldProjMat = driver->getTransform(video::ETS_PROJECTION);
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core::matrix4 oldViewMat = driver->getTransform(video::ETS_VIEW);
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core::matrix4 Matrix;
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Matrix.makeIdentity();
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Matrix.setRotationDegrees(v3f(0.f, 0.f, angle));
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driver->setViewPort(rect);
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driver->setTransform(video::ETS_PROJECTION, core::matrix4());
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driver->setTransform(video::ETS_VIEW, core::matrix4());
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driver->setTransform(video::ETS_WORLD, Matrix);
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video::SMaterial &material = m_rotation_mesh_buffer.getMaterial();
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material.TextureLayer[0].Texture = texture;
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driver->setMaterial(material);
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driver->drawMeshBuffer(&m_rotation_mesh_buffer);
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driver->setTransform(video::ETS_WORLD, core::matrix4());
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driver->setTransform(video::ETS_VIEW, oldViewMat);
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driver->setTransform(video::ETS_PROJECTION, oldProjMat);
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// restore the view area
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driver->setViewPort(oldViewPort);
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}
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void Hud::drawStatbar(v2s32 pos, u16 corner, u16 drawdir,
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const std::string &texture, const std::string &bgtexture,
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@ -95,6 +95,12 @@ private:
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void drawItem(const ItemStack &item, const core::rect<s32> &rect, bool selected);
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void drawCompassTranslate(HudElement *e, video::ITexture *texture,
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const core::rect<s32> &rect, int way);
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void drawCompassRotate(HudElement *e, video::ITexture *texture,
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const core::rect<s32> &rect, int way);
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float m_hud_scaling; // cached minetest setting
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float m_scale_factor;
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v3s16 m_camera_offset;
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@ -115,6 +121,8 @@ private:
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video::SMaterial m_selection_material;
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scene::SMeshBuffer m_rotation_mesh_buffer;
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enum
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{
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HIGHLIGHT_BOX,
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@ -28,6 +28,7 @@ const struct EnumString es_HudElementType[] =
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{HUD_ELEM_INVENTORY, "inventory"},
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{HUD_ELEM_WAYPOINT, "waypoint"},
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{HUD_ELEM_IMAGE_WAYPOINT, "image_waypoint"},
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{HUD_ELEM_COMPASS, "compass"},
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{0, NULL},
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};
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10
src/hud.h
10
src/hud.h
@ -60,7 +60,8 @@ enum HudElementType {
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HUD_ELEM_STATBAR = 2,
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HUD_ELEM_INVENTORY = 3,
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HUD_ELEM_WAYPOINT = 4,
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HUD_ELEM_IMAGE_WAYPOINT = 5
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HUD_ELEM_IMAGE_WAYPOINT = 5,
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HUD_ELEM_COMPASS = 6
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};
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enum HudElementStat {
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@ -79,6 +80,13 @@ enum HudElementStat {
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HUD_STAT_TEXT2,
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};
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enum HudCompassDir {
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HUD_COMPASS_ROTATE = 0,
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HUD_COMPASS_ROTATE_REVERSE,
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HUD_COMPASS_TRANSLATE,
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HUD_COMPASS_TRANSLATE_REVERSE,
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};
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struct HudElement {
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HudElementType type;
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v2f pos;
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