mirror of https://github.com/minetest/minetest.git
Fix crack overlay for animated textures
This commit is contained in:
Kahrl
PilzAdam
parent
2336d21efd
commit
96c34d369e
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@ -1133,12 +1133,17 @@ MapBlockMesh::MapBlockMesh(MeshMakeData *data):
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if(p.tile.material_flags & MATERIAL_FLAG_CRACK)
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{
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ITextureSource *tsrc = data->m_gamedef->tsrc();
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std::string crack_basename = tsrc->getTextureName(p.tile.texture_id);
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// Find the texture name plus ^[crack:N:
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std::ostringstream os(std::ios::binary);
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os<<tsrc->getTextureName(p.tile.texture_id)<<"^[crack";
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if(p.tile.material_flags & MATERIAL_FLAG_CRACK_OVERLAY)
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crack_basename += "^[cracko";
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else
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crack_basename += "^[crack";
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m_crack_materials.insert(std::make_pair(i, crack_basename));
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os<<"o"; // use ^[cracko
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os<<":"<<(u32)p.tile.animation_frame_count<<":";
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m_crack_materials.insert(std::make_pair(i, os.str()));
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// Replace tile texture with the cracked one
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p.tile.texture = tsrc->getTexture(
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os.str()+"0",
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&p.tile.texture_id);
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}
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// - Texture animation
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if(p.tile.material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
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@ -1313,8 +1318,22 @@ bool MapBlockMesh::animate(bool faraway, float time, int crack, u32 daynight_rat
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ITextureSource *tsrc = m_gamedef->getTextureSource();
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std::ostringstream os;
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os<<basename<<crack;
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buf->getMaterial().setTexture(0,
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tsrc->getTexture(os.str()));
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u32 new_texture_id = 0;
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video::ITexture *new_texture =
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tsrc->getTexture(os.str(), &new_texture_id);
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buf->getMaterial().setTexture(0, new_texture);
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// If the current material is also animated,
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// update animation info
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std::map<u32, TileSpec>::iterator anim_iter =
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m_animation_tiles.find(i->first);
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if(anim_iter != m_animation_tiles.end()){
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TileSpec &tile = anim_iter->second;
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tile.texture = new_texture;
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tile.texture_id = new_texture_id;
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// force animation update
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m_animation_frames[i->first] = -1;
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}
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}
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m_last_crack = crack;
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226
src/tile.cpp
226
src/tile.cpp
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@ -379,11 +379,11 @@ public:
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const TextureFromMeshParams ¶ms);
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// Generates an image from a full string like
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// "stone.png^mineral_coal.png^[crack0".
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// "stone.png^mineral_coal.png^[crack:1:0".
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// Shall be called from the main thread.
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video::IImage* generateImageFromScratch(std::string name);
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// Generate image based on a string like "stone.png" or "[crack0".
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// Generate image based on a string like "stone.png" or "[crack:1:0".
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// if baseimg is NULL, it is created. Otherwise stuff is made on it.
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// Shall be called from the main thread.
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bool generateImage(std::string part_of_name, video::IImage *& baseimg);
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@ -543,14 +543,21 @@ u32 TextureSource::getTextureId(const std::string &name)
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return 0;
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}
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// Overlay image on top of another image (used for cracks)
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void overlay(video::IImage *image, video::IImage *overlay);
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// Draw an image on top of an another one, using the alpha channel of the
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// source image
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static void blit_with_alpha(video::IImage *src, video::IImage *dst,
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v2s32 src_pos, v2s32 dst_pos, v2u32 size);
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// Like blit_with_alpha, but only modifies destination pixels that
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// are fully opaque
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static void blit_with_alpha_overlay(video::IImage *src, video::IImage *dst,
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v2s32 src_pos, v2s32 dst_pos, v2u32 size);
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// Draw or overlay a crack
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static void draw_crack(video::IImage *crack, video::IImage *dst,
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bool use_overlay, u32 frame_count, u32 progression,
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video::IVideoDriver *driver);
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// Brighten image
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void brighten(video::IImage *image);
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// Parse a transform name
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@ -1032,8 +1039,10 @@ bool TextureSource::generateImage(std::string part_of_name, video::IImage *& bas
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<<std::endl;*/
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/*
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[crackN
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[crack:N:P
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[cracko:N:P
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Adds a cracking texture
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N = animation frame count, P = crack progression
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*/
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if(part_of_name.substr(0,6) == "[crack")
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{
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@ -1044,24 +1053,14 @@ bool TextureSource::generateImage(std::string part_of_name, video::IImage *& bas
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<<"\", cancelling."<<std::endl;
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return false;
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}
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// Crack image number and overlay option
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s32 progression = 0;
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bool use_overlay = false;
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if(part_of_name.substr(6,1) == "o")
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{
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progression = stoi(part_of_name.substr(7));
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use_overlay = true;
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}
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else
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{
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progression = stoi(part_of_name.substr(6));
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use_overlay = false;
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}
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// Size of the base image
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core::dimension2d<u32> dim_base = baseimg->getDimension();
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// Crack image number and overlay option
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bool use_overlay = (part_of_name[6] == 'o');
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Strfnd sf(part_of_name);
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sf.next(":");
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u32 frame_count = stoi(sf.next(":"));
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u32 progression = stoi(sf.next(":"));
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/*
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Load crack image.
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@ -1070,60 +1069,12 @@ bool TextureSource::generateImage(std::string part_of_name, video::IImage *& bas
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*/
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video::IImage *img_crack = m_sourcecache.getOrLoad(
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"crack_anylength.png", m_device);
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if(img_crack && progression >= 0)
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{
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// Dimension of original image
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core::dimension2d<u32> dim_crack
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= img_crack->getDimension();
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// Count of crack stages
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s32 crack_count = dim_crack.Height / dim_crack.Width;
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// Limit progression
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if(progression > crack_count-1)
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progression = crack_count-1;
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// Dimension of a single crack stage
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core::dimension2d<u32> dim_crack_cropped(
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dim_crack.Width,
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dim_crack.Width
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);
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// Create cropped and scaled crack images
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video::IImage *img_crack_cropped = driver->createImage(
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video::ECF_A8R8G8B8, dim_crack_cropped);
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video::IImage *img_crack_scaled = driver->createImage(
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video::ECF_A8R8G8B8, dim_base);
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if(img_crack_cropped && img_crack_scaled)
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{
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// Crop crack image
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v2s32 pos_crack(0, progression*dim_crack.Width);
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img_crack->copyTo(img_crack_cropped,
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v2s32(0,0),
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core::rect<s32>(pos_crack, dim_crack_cropped));
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// Scale crack image by copying
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img_crack_cropped->copyToScaling(img_crack_scaled);
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// Copy or overlay crack image
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if(use_overlay)
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{
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overlay(baseimg, img_crack_scaled);
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}
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else
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{
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/*img_crack_scaled->copyToWithAlpha(
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baseimg,
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v2s32(0,0),
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core::rect<s32>(v2s32(0,0), dim_base),
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video::SColor(255,255,255,255));*/
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blit_with_alpha(img_crack_scaled, baseimg,
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v2s32(0,0), v2s32(0,0), dim_base);
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}
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}
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if(img_crack_scaled)
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img_crack_scaled->drop();
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if(img_crack_cropped)
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img_crack_cropped->drop();
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draw_crack(img_crack, baseimg,
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use_overlay, frame_count,
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progression, driver);
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img_crack->drop();
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}
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}
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@ -1499,37 +1450,6 @@ bool TextureSource::generateImage(std::string part_of_name, video::IImage *& bas
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return true;
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}
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void overlay(video::IImage *image, video::IImage *overlay)
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{
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/*
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Copy overlay to image, taking alpha into account.
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Where image is transparent, don't copy from overlay.
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Images sizes must be identical.
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*/
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if(image == NULL || overlay == NULL)
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return;
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core::dimension2d<u32> dim = image->getDimension();
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core::dimension2d<u32> dim_overlay = overlay->getDimension();
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assert(dim == dim_overlay);
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for(u32 y=0; y<dim.Height; y++)
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for(u32 x=0; x<dim.Width; x++)
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{
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video::SColor c1 = image->getPixel(x,y);
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video::SColor c2 = overlay->getPixel(x,y);
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u32 a1 = c1.getAlpha();
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u32 a2 = c2.getAlpha();
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if(a1 == 255 && a2 != 0)
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{
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c1.setRed((c1.getRed()*(255-a2) + c2.getRed()*a2)/255);
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c1.setGreen((c1.getGreen()*(255-a2) + c2.getGreen()*a2)/255);
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c1.setBlue((c1.getBlue()*(255-a2) + c2.getBlue()*a2)/255);
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}
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image->setPixel(x,y,c1);
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}
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}
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/*
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Draw an image on top of an another one, using the alpha channel of the
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source image
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@ -1554,6 +1474,100 @@ static void blit_with_alpha(video::IImage *src, video::IImage *dst,
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}
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}
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/*
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Draw an image on top of an another one, using the alpha channel of the
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source image; only modify fully opaque pixels in destinaion
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*/
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static void blit_with_alpha_overlay(video::IImage *src, video::IImage *dst,
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v2s32 src_pos, v2s32 dst_pos, v2u32 size)
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{
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for(u32 y0=0; y0<size.Y; y0++)
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for(u32 x0=0; x0<size.X; x0++)
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{
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s32 src_x = src_pos.X + x0;
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s32 src_y = src_pos.Y + y0;
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s32 dst_x = dst_pos.X + x0;
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s32 dst_y = dst_pos.Y + y0;
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video::SColor src_c = src->getPixel(src_x, src_y);
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video::SColor dst_c = dst->getPixel(dst_x, dst_y);
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if(dst_c.getAlpha() == 255 && src_c.getAlpha() != 0)
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{
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dst_c = src_c.getInterpolated(dst_c, (float)src_c.getAlpha()/255.0f);
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dst->setPixel(dst_x, dst_y, dst_c);
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}
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}
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}
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static void draw_crack(video::IImage *crack, video::IImage *dst,
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bool use_overlay, u32 frame_count, u32 progression,
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video::IVideoDriver *driver)
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{
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// Dimension of destination image
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core::dimension2d<u32> dim_dst = dst->getDimension();
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// Dimension of original image
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core::dimension2d<u32> dim_crack = crack->getDimension();
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// Count of crack stages
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u32 crack_count = dim_crack.Height / dim_crack.Width;
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// Limit frame_count
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if(frame_count > dim_dst.Height)
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frame_count = dim_dst.Height;
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if(frame_count == 0)
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frame_count = 1;
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// Limit progression
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if(progression > crack_count-1)
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progression = crack_count-1;
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// Dimension of a single crack stage
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core::dimension2d<u32> dim_crack_cropped(
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dim_crack.Width,
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dim_crack.Width
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);
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// Dimension of the scaled crack stage,
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// which is the same as the dimension of a single destination frame
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core::dimension2d<u32> dim_crack_scaled(
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dim_dst.Width,
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dim_dst.Height / frame_count
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);
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// Create cropped and scaled crack images
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video::IImage *crack_cropped = driver->createImage(
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video::ECF_A8R8G8B8, dim_crack_cropped);
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video::IImage *crack_scaled = driver->createImage(
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video::ECF_A8R8G8B8, dim_crack_scaled);
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if(crack_cropped && crack_scaled)
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{
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// Crop crack image
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v2s32 pos_crack(0, progression*dim_crack.Width);
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crack->copyTo(crack_cropped,
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v2s32(0,0),
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core::rect<s32>(pos_crack, dim_crack_cropped));
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// Scale crack image by copying
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crack_cropped->copyToScaling(crack_scaled);
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// Copy or overlay crack image onto each frame
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for(u32 i = 0; i < frame_count; ++i)
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{
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v2s32 dst_pos(0, dim_crack_scaled.Height * i);
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if(use_overlay)
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{
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blit_with_alpha_overlay(crack_scaled, dst,
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v2s32(0,0), dst_pos,
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dim_crack_scaled);
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}
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else
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{
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blit_with_alpha(crack_scaled, dst,
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v2s32(0,0), dst_pos,
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dim_crack_scaled);
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}
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}
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}
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if(crack_scaled)
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crack_scaled->drop();
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if(crack_cropped)
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crack_cropped->drop();
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}
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void brighten(video::IImage *image)
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{
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if(image == NULL)
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