Transition fade added for foreground items.

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

Crawler/Class.h

@@ -14,6 +14,7 @@ struct ClassData{
 	static void InitializeClassData();
 	ClassData(std::string name,Class cl,Ability rightClickAbility,Ability ability1,Ability ability2,Ability ability3,
 		AnimationState walk_n,AnimationState walk_e,AnimationState walk_s,AnimationState walk_w,AnimationState idle_n,AnimationState idle_e,AnimationState idle_s,AnimationState idle_w);
+	virtual ~ClassData()=default;
 	virtual void Update(float fElapsedTime)=0;
 	virtual bool AutoAttack()=0;
 	virtual bool Ability1()=0;

Crawler/Crawler.cpp

@@ -851,14 +851,16 @@ void Crawler::RenderWorld(float fElapsedTime){
 	}
 	#pragma region Foreground Rendering
 		for(TileGroup&group:foregroundTileGroups){
-			if(geom2d::overlaps(group.GetRange(),player.pos)){
-				group.playerBehind=true;
-			} else {
-				group.playerBehind=false;
-			}
 			if(view.IsRectVisible(group.GetRange().pos,group.GetRange().size)){
+				if(geom2d::overlaps(group.GetFadeRange(),player.pos)){
+					group.playerBehind=true;
+					group.fadeFactor=std::min(group.fadeFactor+fElapsedTime,TileGroup::FADE_TIME);
+				} else {
+					group.playerBehind=false;
+					group.fadeFactor=std::max(group.fadeFactor-fElapsedTime,0.f);
+				}
 				for(TileRenderData&tile:group.GetTiles()){
-					view.DrawPartialDecal(tile.pos,{24,24},tile.tileset,tile.tileSheetPos,{24,24},{255,255,255,uint8_t(group.playerBehind?128:255)});
+					view.DrawPartialDecal(tile.pos,{24,24},tile.tileset,tile.tileSheetPos,{24,24},{255,255,255,uint8_t(255-group.fadeFactor/TileGroup::FADE_TIME*TileGroup::FADE_AMT)});
 				}
 			}
 		}

Crawler/Map.cpp

@@ -1,5 +1,8 @@
 #include "Map.h"
 
+float TileGroup::FADE_TIME=0.3;
+uint8_t TileGroup::FADE_AMT=160;
+
 void TileGroup::InsertTile(TileRenderData tile){
 	if(tiles.size()==0){
 		range={tile.pos,{24,24}};
@@ -29,6 +32,10 @@ geom2d::rect<int>TileGroup::GetRange(){
 	return range;
 }
 
+geom2d::rect<int>TileGroup::GetFadeRange(){
+	return {range.pos+vi2d{-24,-24},range.size+vi2d{48,48}};
+}
+
 std::vector<TileRenderData>&TileGroup::GetTiles(){
 	return tiles;
 }

Crawler/Map.h

@@ -33,8 +33,14 @@ private:
 	std::vector<TileRenderData>tiles;
 	int minX=0,minY=0,maxX=0,maxY=0;
 public:
+	static float FADE_TIME;
+	//0-255. 255 indicates fully invisible.
+	static uint8_t FADE_AMT;
 	geom2d::rect<int>GetRange();
+	//The fade range is the bounds in which this tile group will be considered "in range" of a player, one tile in each direction further than its actual range.
+	geom2d::rect<int>GetFadeRange();
 	std::vector<TileRenderData>&GetTiles();
 	void InsertTile(TileRenderData tile);
 	bool playerBehind=false;
+	float fadeFactor=0.f;
 };

Crawler/olcUTIL_Geometry2D.h

@@ -178,10 +178,10 @@ namespace olc::utils::geom2d
 		// Get a line from an indexed side, starting top, going clockwise
 		inline line<T> side(const size_t i) const
 		{
-			if (i & 0b11 == 0) return top();
-			if (i & 0b11 == 1) return right();
-			if (i & 0b11 == 2) return bottom();
-			if (i & 0b11 == 3) return left();
+			if (i & (0b11 == 0)) return top();
+			if (i & (0b11 == 1)) return right();
+			if (i & (0b11 == 2)) return bottom();
+			if (i & (0b11 == 3)) return left();
 		}
 
 		// Get area of rectangle