Animation

sdlpp/sdlpp_rectrenderer.cpp

@@ -22,7 +22,7 @@ RectangleRender::RectangleRender( double x, double y, double w, double h,
 RectangleRender::RectangleRender( double x, double y, double w, double h,
                                   const std::shared_ptr< Renderer > &r,
                                   const std::shared_ptr< Texture > &t,
-                                  SDL_Rect source_rect )
+                                  const SDL_Rect &source_rect )
         : RectangleRender( x, y, w, h, r ) {
     setTexture( t, source_rect );
 }
@@ -48,7 +48,8 @@ RectangleRender::RectangleRender( double x, double y, double w, double h,
 }
 RectangleRender::RectangleRender( double x, double y, double w, double h,
                                   const std::shared_ptr< Renderer > &r,
-                                  const std::string &img, SDL_Rect source_rect )
+                                  const std::string &img,
+                                  const SDL_Rect &source_rect )
         : RectangleRender( x, y, w, h, r ) {
     setTexture( img, source_rect );
 }

sdlpp/sdlpp_rectrenderer.hpp

@@ -20,17 +20,17 @@ public:
     RectangleRender( double x, double y, double w, double h,
                      const std::shared_ptr< Renderer > &r,
                      const std::shared_ptr< Texture > &t,
-                     SDL_Rect source_rect = { -1, -1, -1, -1 } );
+                     const SDL_Rect &source_rect = { -1, -1, -1, -1 } );
     RectangleRender( double x, double y, double w, double h,
                      const std::shared_ptr< Renderer > &r,
                      const std::string &img_or_color, bool is_polygon = false );
     RectangleRender( double x, double y, double w, double h,
                      const std::shared_ptr< Renderer > &r,
-                     const std::string &img, int source_x,
+                     const std::string &img, int source_x, int source_y,
-                     int source_y, int source_width, int source_height );
+                     int source_width, int source_height );
     RectangleRender( double x, double y, double w, double h,
                      const std::shared_ptr< Renderer > &r,
-                     const std::string &img, SDL_Rect source_rect );
+                     const std::string &img, const SDL_Rect &source_rect );
     virtual void setColor( const std::string &color ) override;
     virtual void setOutlineColor( const std::string &color ) override;
     virtual void specialAction( int /*UNUSED*/ ) override {}

sdlpp/sdlpp_renderobject.cpp

@@ -12,8 +12,12 @@ void RenderObject::render() {
             polygon->render( *renderer );
         if ( texture != NULL ) {
             SDL_Rect *src = NULL;
+            if ( animation.empty() ) {
                 if ( !entireTexture() )
                     src = &src_rect;
+            } else {
+                src = &animation[animation_index];
+            }
             SDL_RenderCopy( renderer->getRendererPtr(),
                             texture->getTexturePtr(), src, &rect );
         }
@@ -55,7 +59,7 @@ RenderObject::getCollisions() const {
     return collisions;
 }
 void RenderObject::setTexture( const std::shared_ptr< Texture > &t,
-                               SDL_Rect source_rect ) {
+                               const SDL_Rect &source_rect ) {
     texture = t;
     src_rect = source_rect;
 }
@@ -65,7 +69,7 @@ void RenderObject::setTexture( const std::shared_ptr< Texture > &t,
     setTexture( t, { source_x, source_y, source_width, source_height } );
 }
 void RenderObject::setTexture( const std::string &img_path,
-                               SDL_Rect source_rect ) {
+                               const SDL_Rect &source_rect ) {
     texture = std::make_shared< Texture >( renderer, img_path );
     src_rect = source_rect;
 }
@@ -133,6 +137,18 @@ bool RenderObject::getKilled() {
 void RenderObject::setColiderColor( const std::string &color ) {
     colider_color = getColorsHEX( color );
 }
+
+void RenderObject::animate( int ticks ) {
+    if ( animating && !animation.empty() ) {
+        animation_next_frame -= ticks;
+        if ( animation_next_frame <= 0 ) {
+            animation_index = ( animation_index + 1 ) % animation.size();
+            animation_next_frame =
+                ( 1000 / animation_fps ) + animation_next_frame;
+        }
+    }
+}
+
 void RenderObject::move( int ticks ) {
     if ( permanent )
         return;
@@ -189,10 +205,33 @@ void RenderObject::copyTo( std::shared_ptr< RenderObject > other ) {
 void RenderObject::setTextureAlpha( uint8_t alpha ) {
     texture->setAlpha( alpha );
 }
-void RenderObject::setTextureSourceRect( SDL_Rect source_rect ) {
+void RenderObject::setTextureSourceRect( const SDL_Rect &source_rect ) {
     src_rect = source_rect;
 }
 void RenderObject::setTextureSourceRect( int x, int y, int w, int h ) {
     setTextureSourceRect( { x, y, w, h } );
 }
+void RenderObject::setAnimationFrames( const std::vector< SDL_Rect > &frames ) {
+    animation = frames;
+}
+void RenderObject::addAnimationFrame( const SDL_Rect &frame ) {
+    animation.push_back( frame );
+}
+void RenderObject::addAnimationFrame( const int x, const int y, const int w,
+                                      const int h ) {
+    addAnimationFrame( { x, y, w, h } );
+}
+void RenderObject::pauseAnimation() {
+    animating = false;
+}
+void RenderObject::resumeAnimation() {
+    animating = true;
+}
+void RenderObject::removeAnimation() {
+    animation.clear();
+}
+void RenderObject::setAnimationSpeed( const int fps ) {
+    animation_fps = fps;
+    animation_next_frame = 1000 / fps;
+}
 } // namespace SDLPP

sdlpp/sdlpp_renderobject.hpp

@@ -46,12 +46,12 @@ public:
                              int source_y, int source_width,
                              int source_height );
     virtual void setTexture( const std::shared_ptr< Texture > &t,
-                             SDL_Rect source_rect = { -1, -1, -1, -1 } );
+                             const SDL_Rect &source_rect = { -1, -1, -1, -1 } );
     virtual void setTexture( const std::string &img_path, int source_x,
                              int source_y, int source_width,
                              int source_height );
     virtual void setTexture( const std::string &img_path,
-                             SDL_Rect source_rect = { -1, -1, -1, -1 } );
+                             const SDL_Rect &source_rect = { -1, -1, -1, -1 } );
     virtual void setTexture( Font &font, const std::string &text,
                              const std::string &color = "FFFFFF",
                              const std::string &outline_color = "000000",
@@ -87,8 +87,17 @@ public:
     void setStatic( bool stat = true );
     std::shared_ptr< Renderer > getRenderer() const;
     void setTextureAlpha( uint8_t alpha );
-    void setTextureSourceRect( SDL_Rect source_rect );
+    void setTextureSourceRect( const SDL_Rect &source_rect );
     void setTextureSourceRect( int x, int y, int w, int h );
+    void setAnimationFrames( const std::vector< SDL_Rect > &frames );
+    void addAnimationFrame( const SDL_Rect &frame );
+    void addAnimationFrame( const int x, const int y, const int w,
+                            const int h );
+    void setAnimationSpeed( const int fps );
+    void pauseAnimation();
+    void resumeAnimation();
+    void removeAnimation();
+    void animate( int ticks );
 
 protected:
     virtual void copyTo( std::shared_ptr< RenderObject > other );
@@ -111,6 +120,11 @@ protected:
     bool centerx = false;
     SDL_Rect rect;
     SDL_Rect src_rect = { -1, -1, -1, -1 };
+    size_t animation_index = 0;
+    size_t animation_fps = 1;
+    int animation_next_frame = 1000;
+    std::vector< SDL_Rect > animation{};
+    bool animating = true;
 
 private:
     void setSceneID( int id );

sdlpp/sdlpp_scene.cpp

@@ -76,12 +76,16 @@ Scene::getObjects( const std::unordered_set< int > &objectIDs ) {
     }
     return ret;
 }
-void Scene::movement() {
+void Scene::updateScene() {
+    // check for objects that should be removed
     checkKilled();
     std::lock_guard< std::mutex > lock( render_mutex );
     int now_ticks = SDL_GetTicks();
     for ( const auto &x : render_objects ) {
+        // move objects that should be moved
         x->move( now_ticks - prev_ticks );
+        // animate objects that should be animated
+        x->animate( now_ticks - prev_ticks );
     }
     prev_ticks = now_ticks;
 }

sdlpp/sdlpp_scene.hpp

@@ -23,7 +23,7 @@ public:
     std::vector< std::shared_ptr< RenderObject > > getObjects();
     std::vector< std::shared_ptr< RenderObject > >
     getObjects( const std::unordered_set< int > &objectIDs );
-    void movement();
+    void updateScene();
     std::vector< std::shared_ptr< RenderObject > >
     getCollisions( RenderObject &r );
     std::vector< std::shared_ptr< RenderObject > >