Fog of War with ghost unit permanenance.

olcCodeJam2023Entry/TileManager.cpp

@@ -0,0 +1,3 @@
+#include "TileManager.h"
+
+std::map<vi2d,float> TileManager::visibleTiles;

olcCodeJam2023Entry/TileManager.h

@@ -0,0 +1,7 @@
+#pragma once
+#include "olcPixelGameEngine.h"
+
+class TileManager{
+public:
+	static std::map<vi2d,float>visibleTiles;
+};

olcCodeJam2023Entry/Unit.cpp

@@ -1,6 +1,7 @@
 #include "Unit.h"
 #include "Constant.h"
 #include "olcUTIL_Geometry2D.h"
+#include "TileManager.h"
 
 BasicUnit::BasicUnit(vf2d pos,Renderable&img,bool friendly)
 	:Unit({
@@ -32,11 +33,12 @@ void BasicUnit2::Attack(Unit&victim){
 
 
 Unit::Unit(std::vector<Memory>memory,vf2d pos,Renderable&img,bool friendly)
-:pos(pos),img(img),friendly(friendly){
+:pos(pos),ghostPos(pos),img(img),friendly(friendly){
 	int marker=0;
 	for(Memory&mem:memory){
 		for(int i=0;i<mem.size;i++){
 			this->memory.push_back(true);
+			this->ghostMemory.push_back(true);
 		}
 		switch(mem.type){
 		case HEALTH:{
@@ -67,15 +69,15 @@ Unit::Unit(std::vector<Memory>memory,vf2d pos,Renderable&img,bool friendly)
 
 
 void Unit::Draw(TileTransformedView&game){
-	game.DrawRotatedDecal(pos,img.Decal(),0,img.Sprite()->Size()/2,{1,1},friendly?Pixel{192,192,255}:Pixel{255,192,192});
+	game.DrawRotatedDecal(ghostPos,img.Decal(),0,img.Sprite()->Size()/2,{1,1},friendly?Pixel{192,192,255}:Pixel{255,192,192});
 	if(IsSelected()){
-		game.DrawRotatedDecal(pos,CONSTANT::SELECTION_CIRCLE.Decal(),0,CONSTANT::SELECTION_CIRCLE.Sprite()->Size()/2,vf2d(img.Sprite()->Size())/CONSTANT::SELECTION_CIRCLE.Sprite()->Size(),WHITE);
+		game.DrawRotatedDecal(ghostPos,CONSTANT::SELECTION_CIRCLE.Decal(),0,CONSTANT::SELECTION_CIRCLE.Sprite()->Size()/2,vf2d(img.Sprite()->Size())/CONSTANT::SELECTION_CIRCLE.Sprite()->Size(),WHITE);
 	}
 }
 
 void Unit::DrawHud(TileTransformedView&game){
-	int initialBarX=pos.x-GetMemorySize()/2*CONSTANT::BAR_SQUARE_SIZE.x;
-	int initialBarY=pos.y-CONSTANT::BAR_SQUARE_SIZE.y-img.Sprite()->height/2-2;
+	int initialBarX=ghostPos.x-GetMemorySize()/2*CONSTANT::BAR_SQUARE_SIZE.x;
+	int initialBarY=ghostPos.y-CONSTANT::BAR_SQUARE_SIZE.y-img.Sprite()->height/2-2;
 	Pixel col=0;
 
 
@@ -101,7 +103,7 @@ void Unit::DrawHud(TileTransformedView&game){
 		CheckColor(i,col);
 
 		game.FillRectDecal({float(initialBarX)+i*CONSTANT::BAR_SQUARE_SIZE.x,
-			float(initialBarY)},CONSTANT::BAR_SQUARE_SIZE,memory[i]?col:col/4);
+			float(initialBarY)},CONSTANT::BAR_SQUARE_SIZE,ghostMemory[i]?col:col/4);
 		game.DrawRectDecal({float(initialBarX)+i*CONSTANT::BAR_SQUARE_SIZE.x,
 			float(initialBarY)},CONSTANT::BAR_SQUARE_SIZE,BLACK);
 	}
@@ -145,7 +147,7 @@ void Unit::Update(float fElapsedTime){
 	if(!target.expired()){
 		auto ptrTarget=target.lock();
 		if(!InRange(ptrTarget)){
-			pos+=(ptrTarget->GetPos()-pos).norm()*GetMoveSpd()*24*fElapsedTime;
+			SetPos(GetPos()+(ptrTarget->GetPos()-pos).norm()*GetMoveSpd()*24*fElapsedTime);
 		} else {
 			//TODO Attack here.
 		}
@@ -153,10 +155,32 @@ void Unit::Update(float fElapsedTime){
 	if(targetLoc!=CONSTANT::UNSELECTED){
 		float dist=geom2d::line<float>(pos,targetLoc).length();
 		if(dist>24){
-			pos+=(targetLoc-pos).norm()*GetMoveSpd()*24*fElapsedTime;
+			SetPos(GetPos()+(targetLoc-pos).norm()*GetMoveSpd()*24*fElapsedTime);
 		}
 	}
 
+	if(!IsFriendly()){
+		if(changeDirTimer==0){
+			changeDirTimer=rand()%30;
+			switch(rand()%4){
+				case 0:{
+					movementVel={16,0};
+				}break;
+				case 1:{
+					movementVel={0,16};
+				}break;
+				case 2:{
+					movementVel={-16,0};
+				}break;
+				case 3:{
+					movementVel={0,-16};
+				}break;
+			}
+		}
+		SetPos(GetPos()+movementVel*fElapsedTime);
+		changeDirTimer=std::max(0.f,changeDirTimer-fElapsedTime);
+	}
+
 	reloadTimer=std::max(0.f,reloadTimer-fElapsedTime);
 }
 
@@ -229,6 +253,9 @@ bool Unit::InRange(vf2d pos){
 
 void Unit::SetPos(vf2d newPos){
 	pos=newPos;
+	if(!InFogOfWar()){
+		ghostPos=pos;
+	}
 }
 
 void Unit::AttemptAttack(Unit*unit){
@@ -254,3 +281,19 @@ void Unit::_Attack(Unit*finalTarget){
 	Attack(*finalTarget);
 	reloadTimer=1.f/GetAtkSpd();
 }
+
+bool Unit::InFogOfWar(){
+	return TileManager::visibleTiles.count(GetPos()/96)==0;
+}
+
+bool Unit::GhostInFogOfWar(){
+	return TileManager::visibleTiles.count(ghostPos/96)==0;
+}
+
+void Unit::HideGhost(){
+	ghostPos={99999,-99999};
+}
+
+vf2d Unit::GetGhostPos(){
+	return ghostPos;
+}

olcCodeJam2023Entry/Unit.h

@@ -32,6 +32,7 @@ public:
 	int GetProcedure();
 	int GetMemorySize();
 	std::vector<bool>memory;
+	std::vector<bool>ghostMemory;
 	void Update(float fElapsedTime);
 	virtual void Attack(Unit&victim)=0;
 	virtual void Draw(TileTransformedView&game);
@@ -47,13 +48,19 @@ public:
 	void SetTargetLocation(vf2d targetLoc);
 	void SetPos(vf2d newPos);
 	void AttemptAttack(Unit*unit);
-
+	bool InFogOfWar();
+	bool GhostInFogOfWar();
+	void HideGhost();
+	vf2d GetGhostPos();
 
 	std::vector<bool>& operator <<=(const int n){
 		for(int i=0;i<GetMemorySize()-1;i++){
 			memory[i]=memory[i+1];
 		}
 		memory[GetMemorySize()-1]=0;
+		if(!InFogOfWar()){
+			ghostMemory=memory;
+		}
 		return memory;
 	}
 
@@ -62,10 +69,12 @@ public:
 			memory[i]=memory[i-1];
 		}
 		memory[0]=0;
+		if(!InFogOfWar()){
+			ghostMemory=memory;
+		}
 		return memory;
 	}
 protected:
-	vf2d pos;
 	bool friendly;
 	Renderable&img;
 	Marker health;
@@ -76,6 +85,8 @@ protected:
 	std::weak_ptr<Unit>target;
 	vf2d targetLoc=CONSTANT::UNSELECTED;
 private:
+	vf2d pos;
+	vf2d ghostPos;
 	int GetBits(Marker&m);
 	bool selected=false;
 	bool dead=false;
@@ -83,6 +94,8 @@ private:
 	bool InRange(vf2d pos);
 	float reloadTimer=0;
 	void _Attack(Unit*finalTarget);
+	vf2d movementVel={0,0};
+	float changeDirTimer=0;
 };
 
 struct BasicUnit:Unit{

olcCodeJam2023Entry/VirusAttack.cpp

@@ -2,6 +2,7 @@
 #define OLC_SOUNDWAVE
 #define OLC_PGEX_TRANSFORMEDVIEW
 #include "olcUTIL_Geometry2D.h"
+#include "TileManager.h"
 
 #include "VirusAttack.h"
 
@@ -132,7 +133,7 @@ void VirusAttack::DrawMinimap(){
 	}
 	DrawRect((game.GetWorldOffset()/worldPixelSize*64),viewingTilesPct*64/game.GetWorldScale());
 	for(auto&u:units){
-		FillRect(u->GetPos()/worldPixelSize*64,vf2d{2,2}*u->GetUnitSize()/24,u->IsFriendly()?GREEN:RED);
+		FillRect(u->GetGhostPos()/worldPixelSize*64,vf2d{2,2}*u->GetUnitSize()/24,u->IsFriendly()?GREEN:RED);
 	}
 	MINIMAP_OUTLINE.Decal()->Update();
 	SetDrawTarget(nullptr);
@@ -179,11 +180,11 @@ bool VirusAttack::OnUserUpdate(float fElapsedTime){
 	HandlePanAndZoom(fElapsedTime);
 	HandleMinimapClick();
 
-	for(auto&tile:visibleTiles){
+	for(auto&tile:TileManager::visibleTiles){
 		tile.second-=fElapsedTime;
 	}
 
-	std::erase_if(visibleTiles,[](std::pair<vf2d,float> key){return key.second<=0;});
+	std::erase_if(TileManager::visibleTiles,[](std::pair<vf2d,float> key){return key.second<=0;});
 
 	for(auto&u:units){
 		Unit*closestUnit=nullptr;
@@ -195,13 +196,18 @@ bool VirusAttack::OnUserUpdate(float fElapsedTime){
 		if(u->IsFriendly()){
 			for(int y=-1;y<2;y++){
 				for(int x=-1;x<2;x++){
-					visibleTiles[u->GetPos()/24/4+vi2d(x,y)]=5;
+					TileManager::visibleTiles[u->GetPos()/24/4+vi2d(x,y)]=5;
 				}
 			}
 		}
 		u->AttemptAttack(closestUnit);
 		u->Update(fElapsedTime);
 	}
+	for(auto&u:units){
+		if(!u->GhostInFogOfWar()&&u->InFogOfWar()){
+			u->HideGhost();
+		}
+	}
 	game.DrawPartialDecal({0,0},CONSTANT::WORLD_SIZE*CONSTANT::TILE_SIZE,TILE.Decal(),{0,0},CONSTANT::WORLD_SIZE*CONSTANT::TILE_SIZE,DARK_GREEN);
 
 	for(auto&u:units){
@@ -214,7 +220,7 @@ bool VirusAttack::OnUserUpdate(float fElapsedTime){
 	DrawSelectionRectangle();
 	for(int y=game.GetTopLeftTile().y/96-1;y<=game.GetBottomRightTile().y/96+1;y++){
 		for(int x=game.GetTopLeftTile().x/96-1;x<=game.GetBottomRightTile().x/96+1;x++){
-			if(visibleTiles.count(vi2d{x,y})==0){
+			if(TileManager::visibleTiles.count(vi2d{x,y})==0){
 				if(x>=0&&y>=0&&x<=CONSTANT::WORLD_SIZE.x*CONSTANT::TILE_SIZE.x&&y<=CONSTANT::WORLD_SIZE.y*CONSTANT::TILE_SIZE.y){
 					game.FillRectDecal(vf2d{float(x),float(y)}*96,{96,96},{0,0,0,128});
 				}

olcCodeJam2023Entry/VirusAttack.h

@@ -7,7 +7,6 @@ class VirusAttack : public olc::PixelGameEngine
 {
 private:
 	std::vector<std::shared_ptr<Unit>>units;
-	std::map<vi2d,float>visibleTiles;
 
 	Renderable TILE,MINIMAP_HUD,OUTLINE,MINIMAP_OUTLINE;
 

olcCodeJam2023Entry/olcCodeJam2023Entry.vcxproj

@@ -142,11 +142,13 @@
     <ClInclude Include="olcUTIL_Geometry2D.h" />
     <ClInclude Include="resource.h" />
     <ClInclude Include="resource1.h" />
+    <ClInclude Include="TileManager.h" />
     <ClInclude Include="Unit.h" />
     <ClInclude Include="VirusAttack.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Constant.cpp" />
+    <ClCompile Include="TileManager.cpp" />
     <ClCompile Include="Unit.cpp" />
     <ClCompile Include="VirusAttack.cpp" />
   </ItemGroup>

olcCodeJam2023Entry/olcCodeJam2023Entry.vcxproj.filters

@@ -57,6 +57,9 @@
     <ClInclude Include="Constant.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="TileManager.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="VirusAttack.cpp">
@@ -68,6 +71,9 @@
     <ClCompile Include="Constant.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="TileManager.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="olcCodeJam2023Entry.rc">