Detect connected tile groups and allow for fade out of the foreground layer when the player gets in range. These groups are initialized on level loading and self-expand.

Crawler/Crawler.cpp

@@ -609,7 +609,6 @@ void Crawler::HurtEnemies(vf2d pos,float radius,int damage){
 
 void Crawler::RenderWorld(float fElapsedTime){
 	Clear({100,180,100});
-	std::vector<TileRenderData>foregroundTiles;
 	for (int x = view.GetTopLeftTile().x/24-1; x <= view.GetBottomRightTile().x/24; x++){
 		for (int y = view.GetTopLeftTile().y/24-1; y <= view.GetBottomRightTile().y/24; y++){
 			if(x>=0&&x<WORLD_SIZE.x&&y>=0&&y<WORLD_SIZE.y){
@@ -622,9 +621,7 @@ void Crawler::RenderWorld(float fElapsedTime){
 						int tileSheetIndex=tileID-(tileSheet.firstgid-1);
 						int tileSheetX=tileSheetIndex%tileSheetWidth;
 						int tileSheetY=tileSheetIndex/tileSheetWidth;
-						if(IsForegroundTile(tileSheet,tileSheetIndex)){
-							foregroundTiles.push_back({tileSheet.tileset.tileset->Decal(),vi2d{x,y}*24,vi2d{tileSheetX,tileSheetY}*24});
-						} else {
+						if(!IsForegroundTile(tileSheet,tileSheetIndex)){
 							view.DrawPartialDecal(vi2d{x,y}*24,{24,24},tileSheet.tileset.tileset->Decal(),vi2d{tileSheetX,tileSheetY}*24,{24,24});
 						}
 					}
@@ -665,8 +662,17 @@ void Crawler::RenderWorld(float fElapsedTime){
 	for(Bullet&b:PLAYER_BULLET_LIST){
 		b.Draw();
 	}
-	for(TileRenderData&foregroundTile:foregroundTiles){
-		view.DrawPartialDecal(foregroundTile.pos,{24,24},foregroundTile.tileset,foregroundTile.tileSheetPos,{24,24},{255,255,255,uint8_t(std::clamp(geom2d::line<float>(foregroundTile.pos+vi2d{12,12},player.GetPos()).length()*5,0.f,255.f))});
+	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)){
+			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)});
+			}
+		}
 	}
 	for(std::vector<DamageNumber>::iterator it=DAMAGENUMBER_LIST.begin();it!=DAMAGENUMBER_LIST.end();++it){
 		DamageNumber&dn=*it;
@@ -798,6 +804,7 @@ void Crawler::InitializeLevel(std::string mapFile,MapName map){
 
 void Crawler::LoadLevel(MapName map){
 	SPAWNER_LIST.clear();
+	foregroundTileGroups.clear();
 	currentLevel=map;
 	WORLD_SIZE={MAP_DATA[map].MapData.width,MAP_DATA[map].MapData.height};
 	for(SpawnerTag&spawner:MAP_DATA[map].SpawnerData){
@@ -811,6 +818,41 @@ void Crawler::LoadLevel(MapName map){
 		}
 		SPAWNER_LIST.push_back(MonsterSpawner{{spawner.ObjectData.GetFloat("x")+spawnerRadius.x,spawner.ObjectData.GetFloat("y")+spawnerRadius.y},spawnerRadius,monster_list});
 	}
+	for(int x=0;x<WORLD_SIZE.x;x++){
+		for(int y=0;y<WORLD_SIZE.y;y++){
+			for(LayerTag&layer:MAP_DATA[currentLevel].LayerData){
+				int tileID=layer.tiles[y][x]-1;
+				if(tileID!=-1){
+					TilesheetData tileSheet=GetTileSheet(currentLevel,tileID);
+					int tileSheetWidth=tileSheet.tileset.tileset->Sprite()->width/24;
+					int tileSheetHeight=tileSheet.tileset.tileset->Sprite()->height/24;
+					int tileSheetIndex=tileID-(tileSheet.firstgid-1);
+					int tileSheetX=tileSheetIndex%tileSheetWidth;
+					int tileSheetY=tileSheetIndex/tileSheetWidth;
+					if(IsForegroundTile(tileSheet,tileSheetIndex)){
+						TileRenderData tile={tileSheet.tileset.tileset->Decal(),vi2d{x,y}*24,vi2d{tileSheetX,tileSheetY}*24};
+						std::cout<<"Tile "<<vi2d{x,y}<<" w/Tile ID "<<tileSheetIndex<<" is foreground tile."<<std::endl;
+						bool foundGroup=false;
+						for(TileGroup&group:foregroundTileGroups){
+							if(geom2d::overlaps(geom2d::rect<int>{vi2d{x,y}*24-vi2d{1,1},{26,26}},group.GetRange())){
+								std::cout<<" Group found: "<<group.GetRange().pos<<"/"<<group.GetRange().size<<std::endl;
+								group.InsertTile(tile);
+								std::cout<<"  After: "<<group.GetRange().pos<<"/"<<group.GetRange().size<<std::endl;
+								foundGroup=true;
+								break;
+							}
+						}
+						if(!foundGroup){
+							TileGroup group;
+							group.InsertTile(tile);
+							std::cout<<" No Group found. New group: "<<group.GetRange().pos<<"/"<<group.GetRange().size<<std::endl;
+							foregroundTileGroups.push_back(group);
+						}
+					}
+				}
+			}
+		}
+	}
 }
 
 vi2d Crawler::GetWorldSize(){

Crawler/Crawler.h

@@ -33,6 +33,7 @@ class Crawler : public olc::PixelGameEngine
 	const float WORLD_SHAKE_ADJUST_MAX_TIME=0.4;
 	MapName currentLevel=MapName::CAMPAIGN_1_1;
 	vi2d WORLD_SIZE={120,8};
+	std::vector<TileGroup>foregroundTileGroups;
 
 public:
 	Crawler();

Crawler/Crawler.vcxproj

@@ -193,6 +193,7 @@
     <ClCompile Include="Crawler.cpp" />
     <ClCompile Include="DamageNumber.cpp" />
     <ClCompile Include="Effect.cpp" />
+    <ClCompile Include="Map.cpp" />
     <ClCompile Include="pixelGameEngine.cpp" />
     <ClCompile Include="Player.cpp" />
     <ClCompile Include="Monster.cpp" />

Crawler/Crawler.vcxproj.filters

@@ -119,6 +119,9 @@
     <ClCompile Include="Class.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="Map.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="cpp.hint" />

Crawler/Map.cpp

@@ -0,0 +1,30 @@
+#include "Map.h"
+
+void TileGroup::InsertTile(TileRenderData tile){
+	if(tiles.size()==0){
+		range={tile.pos,{24,24}};
+	}
+	tiles.push_back(tile);
+	if(tile.pos.x<range.pos.x){
+		range.pos.x=tile.pos.x;
+		range.size.x+=range.pos.x-tile.pos.x;
+	}
+	if(tile.pos.x+24>range.pos.x+range.size.x){
+		range.size.x+=(tile.pos.x+24)-(range.pos.x+range.size.x);
+	}
+	if(tile.pos.y<range.pos.y){
+		range.pos.y=tile.pos.y;
+		range.size.y+=range.pos.y-tile.pos.y;
+	}
+	if(tile.pos.y+24>range.pos.y+range.size.y){
+		range.size.y+=(tile.pos.y+24)-(range.pos.y+range.size.y);
+	}
+}
+
+geom2d::rect<int>TileGroup::GetRange(){
+	return range;
+}
+
+std::vector<TileRenderData>&TileGroup::GetTiles(){
+	return tiles;
+}

Crawler/Map.h

@@ -1,5 +1,6 @@
 #pragma once
 #include "TSXParser.h"
+#include "olcUTIL_Geometry2D.h"
 
 enum MapName{
 	LEVEL1,
@@ -16,4 +17,15 @@ struct TileRenderData{
 	Decal*tileset;
 	vi2d pos;
 	vi2d tileSheetPos;
+};
+
+struct TileGroup{
+private:
+	geom2d::rect<int>range;
+	std::vector<TileRenderData>tiles;
+public:
+	geom2d::rect<int>GetRange();
+	std::vector<TileRenderData>&GetTiles();
+	void InsertTile(TileRenderData tile);
+	bool playerBehind=false;
 };

Crawler/Version.h

@@ -2,7 +2,7 @@
 #define VERSION_MAJOR 0
 #define VERSION_MINOR 2
 #define VERSION_PATCH 0
-#define VERSION_BUILD 204
+#define VERSION_BUILD 217
 
 #define stringify(a) stringify_(a)
 #define stringify_(a) #a