#define OLC_PGE_APPLICATION
#define OLC_SOUNDWAVE
#define OLC_PGEX_TRANSFORMEDVIEW
#define AUDIO_LISTENER_IMPLEMENTATION
#define AUDIO_SOURCE_IMPLEMENTATION
#define OLC_PGEX_QUICKGUI

//#define SPLASH_ENABLED
#ifdef SPLASH_ENABLED
	#define OLC_PGEX_SPLASHSCREEN
#endif

#include "olcUTIL_Geometry2D.h"
#include "TileManager.h"
#include "util.h"

#include "VirusAttack.h"

VirusAttack::VirusAttack()
{
	// Name your application
	sAppName = "olcCodeJam 2023 Entry";
}

void VirusAttack::InitializeImages(){
	auto LoadImage=[&](Image img,std::string filepath,bool filter=false,bool clamp=true){
		IMAGES[img]=std::make_unique<Renderable>();
		IMAGES[img]->Load(filepath,nullptr,filter,clamp);
	};
	LoadImage(TILE,"assets/tile.png",false,false);
	LoadImage(MINIMAP_HUD,"assets/minimap_hud.png");
	LoadImage(OUTLINE,"assets/outline.png");
	LoadImage(VIRUS_IMG1,"assets/unit.png");
	LoadImage(SELECTION_CIRCLE,"assets/selection_circle.png");
	LoadImage(MEMORY_COLLECTION_POINT,"assets/memory_collection_point.png");
	LoadImage(LEFT_SHIFTER,"assets/left_shifter.png");
	LoadImage(RIGHT_SHIFTER,"assets/right_shifter.png");
	LoadImage(BIT_RESTORER,"assets/bit_restorer.png");
	LoadImage(MEMORY_SWAPPER,"assets/memory_swapper.png");
	LoadImage(CORRUPTER,"assets/corrupter.png");
	LoadImage(UNIT_ALLOCATOR,"assets/shell.png");
	LoadImage(RAM_BANK,"assets/ram_bank.png");
	LoadImage(RANGE_INDICATOR,"assets/range_indicator.png");
	LoadImage(DOWN_ARROW,"assets/down_arrow.png");
	LoadImage(RED_X,"assets/red_x.png");
	LoadImage(RLD,"assets/rld.png");
	LoadImage(PRC,"assets/prc.png");
	LoadImage(RNG,"assets/rng.png");
	LoadImage(SPD,"assets/spd.png");
	LoadImage(TARGETING_LINE,"assets/targetLine.png");
	LoadImage(ATTACKING_LINE,"assets/attackLine.png");
	LoadImage(RLD_ICON,"assets/rld_icon.png");
	LoadImage(PRC_ICON,"assets/prc_icon.png");
	LoadImage(RNG_ICON,"assets/rng_icon.png");
	LoadImage(SPD_ICON,"assets/spd_icon.png");
	LoadImage(RESOURCE,"assets/material.png");
	LoadImage(MEMORY_COLLECTION_POINT_HIGHLIGHT,"assets/memory_collection_point_highlight.png");
}

void VirusAttack::InitializeLevelData(){
	#pragma region Stage 1
		//Stage 1 data.
		levelData[STAGE1].size={64,64};
		levelData[STAGE1].bgm=Sound::GRAVITY;
		levelData[STAGE1].player_starting_resources={5,5,5,5,5};
		levelData[STAGE1].enemy_starting_resources={0,0,0,0,0};
		{
			std::vector<UnitData>&units=levelData[STAGE1].unitPlacement;
			std::vector<CPData>&collectionPoints=levelData[STAGE1].cpPlacement;

			units.push_back({UnitType::LeftShifter,vf2d{128,128},true});
			units.push_back({UnitType::RightShifter,vf2d{129,129},true});
			units.push_back({UnitType::BitRestorer,vf2d{130,130},true});
			units.push_back({UnitType::BitRestorer,vf2d{130,140},true});
			units.push_back({UnitType::MemorySwapper,vf2d{131,131},true});
			units.push_back({UnitType::Corrupter,vf2d{132,132},true});
			units.push_back({UnitType::MemoryAllocator,vf2d{133,133},true});
			units.push_back({UnitType::RAMBank,vf2d{134,134},true});


			for(int i=0;i<5;i++){
				collectionPoints.push_back({vf2d{32.f+48*i,32.f},0,MemoryType(i)});
				collectionPoints.push_back({vf2d{32.f,32.f+48*i},-PI/2,MemoryType(i)});
			}

			units.push_back({UnitType::RAMBank,vf2d{1200,1200},false});

			units.push_back({UnitType::RightShifter,vf2d{1260,1200},false});
			units.push_back({UnitType::RightShifter,vf2d{360,300},false});
			units.push_back({UnitType::RightShifter,vf2d{361,300},false});
		}
	#pragma endregion
	#pragma region Stage 2
		//Stage 2 data.
		levelData[STAGE2].size={16,16};
		levelData[STAGE2].bgm=Sound::COSMOS;
		levelData[STAGE2].player_starting_resources={10,10,10,10,10};
		levelData[STAGE2].enemy_starting_resources={0,0,0,0,0};
		{
			std::vector<UnitData>&units=levelData[STAGE2].unitPlacement;
			std::vector<CPData>&collectionPoints=levelData[STAGE2].cpPlacement;

			units.push_back({UnitType::RAMBank,vf2d{134,134},true});

			units.push_back({UnitType::RAMBank,vf2d{1200,1200},false});
		}
	#pragma endregion
}

bool VirusAttack::OnUserCreate(){
	SetPixelMode(Pixel::MASK);

	game.Initialise(GetScreenSize());

	InitializeImages();

	unitCreationBox.Initialize("Hello world, this is a test of the textbox system.\nMaybe even with some newline characters snuck in there.",
		{});
	unitCreationBox.SetVisible(false);
	testBox.Initialize("Hello world, this is a test of the textbox system.\nMaybe even with some newline characters snuck in there.",{});
	testBox.SetVisible(false);
	memoryAllocatorBox.Initialize(CONSTANT::MEMORY_ALLOCATOR_BOX_DISPLAY_STRING,{},CONSTANT::MEMORY_ALLOCATOR_BOX_HEADER_STRING);
	memoryAllocatorBox.SetVisible(false);

	IMAGES[MINIMAP_OUTLINE]=std::make_unique<Renderable>();
	IMAGES[MINIMAP_OUTLINE]->Create(64,64);

	IMAGES[MATRIX]=std::make_unique<Renderable>();
	IMAGES[MATRIX]->Create(64,64,false,false);
	IMAGES[MATRIX]->Sprite()->SetSampleMode(Sprite::PERIODIC);

	AL.AudioSystemInit();
	InitializeSounds();

	InitializeUnitCreationGUI();
	InitializeLevelData();

	LoadLevel(STAGE1);

	return true;
}

void VirusAttack::LoadLevel(LevelName level){
	Level&selectedLevel=levelData[level];

	currentLevel=&selectedLevel;

	WORLD_SIZE=selectedLevel.size;

	if(bgm!=nullptr){
		bgm->Stop();
	}
	bgm=SOUNDS[selectedLevel.bgm].get();
	bgm->PlayCentered(1,1,true);
	player_resources=selectedLevel.player_starting_resources;
	enemy_resources=selectedLevel.enemy_starting_resources;

	TileManager::visibleTiles.clear();
	units.clear();
	collectionPoints.clear();

	for(auto&u:selectedLevel.unitPlacement){
		#define TranslateUnit(type) \
			case UnitType::type:{ \
				units.push_back(std::make_unique<type>(this,u.pos,IMAGES,u.friendly)); \
			}break;

		switch(u.type){
			TranslateUnit(LeftShifter)
			TranslateUnit(RightShifter)
			TranslateUnit(BitRestorer)
			TranslateUnit(MemorySwapper)
			TranslateUnit(Corrupter)
			TranslateUnit(MemoryAllocator)
			TranslateUnit(RAMBank)
		}
	}
	for(auto&cp:selectedLevel.cpPlacement){
		collectionPoints.push_back(std::make_unique<CollectionPoint>(this,cp.pos,cp.rot,*IMAGES[MEMORY_COLLECTION_POINT],cp.type));	
	}
}

void VirusAttack::InitializeUnitCreationGUI(){
	unitCreationList.colNormal = olc::DARK_GREEN;
	unitCreationList.colHover = olc::GREEN;
	unitCreationList.colClick = olc::YELLOW;
	unitCreationList.colDisable = olc::DARK_GREY;
	unitCreationList.colBorder = olc::YELLOW;
	unitCreationList.colText = olc::WHITE;
	leftShifterButton=new QuickGUI::ImageButton(unitCreationList,*IMAGES[LEFT_SHIFTER],{0.5,0.5},{16.f+32*0,float(ScreenHeight()-32)},{20,20});
	rightShifterButton=new QuickGUI::ImageButton(unitCreationList,*IMAGES[RIGHT_SHIFTER],{0.5,0.5},{16.f+32*1,float(ScreenHeight()-32)},{20,20});
	bitRestorerButton=new QuickGUI::ImageButton(unitCreationList,*IMAGES[BIT_RESTORER],{0.5,0.5},{16.f+32*2,float(ScreenHeight()-32)},{20,20});
	memorySwapperButton=new QuickGUI::ImageButton(unitCreationList,*IMAGES[MEMORY_SWAPPER],{0.5,0.5},{16.f+32*3,float(ScreenHeight()-32)},{20,20});
	corrupterButton=new QuickGUI::ImageButton(unitCreationList,*IMAGES[CORRUPTER],{0.5,0.5},{16.f+32*4,float(ScreenHeight()-32)},{20,20});
	platformButton=new QuickGUI::ImageButton(unitCreationList,*IMAGES[UNIT_ALLOCATOR],{0.5,0.5},{16.f+32*5,float(ScreenHeight()-32)},{20,20});
}

void VirusAttack::InitializeSounds(){
	int soundIndex=0;
	auto LoadSound=[&](Sound sound,std::string soundFilename){
		SOUNDS[sound]=std::make_unique<Audio>();
		SOUNDS[sound]->AL=&AL;
		SOUNDS[sound]->LoadAudioSample(soundIndex,std::string("./assets/"+soundFilename).c_str());
		soundIndex++;
	};

	LoadSound(Sound::HUM,"machine2.wav");
	LoadSound(Sound::GRAVITY,"gravity.mp3");
	LoadSound(Sound::COSMOS,"cosmos.mp3");
}

bool VirusAttack::UnitCreationClickHandled(){
	#define CheckClick(UnitClass,Button)  \
		if(Button->bPressed){ \
			for(auto&u:units){ \
				if(u->IsSelected()&&u->IsAllocator()&&CanAfford(player_resources,UnitClass::resourceCost)) { \
					std::unique_ptr<UnitClass>buildUnit=std::make_unique<UnitClass>(this,u->GetPos(),IMAGES,u->IsFriendly()); \
					u->SetBuildUnit(CONSTANT::UNIT_BUILD_TIME,std::move(buildUnit)); \
					ExpendResources(player_resources,UnitClass::resourceCost); \
				} \
			} \
			return true; \
		}

	CheckClick(LeftShifter,leftShifterButton)
	CheckClick(RightShifter,rightShifterButton)
	CheckClick(BitRestorer,bitRestorerButton)
	CheckClick(MemorySwapper,memorySwapperButton)
	CheckClick(BitRestorer,bitRestorerButton)
	CheckClick(Corrupter,corrupterButton)
	CheckClick(MemoryAllocator,platformButton)
	return false;	
};

void VirusAttack::UpdateUnitCreationListGUI(bool allocatorSelected){
	unitCreationList.DisplayAllControls(allocatorSelected);
	#define EnableAndHoverCheck(UnitClass,Button) \
		Button->Enable(CanAfford(player_resources,UnitClass::resourceCost)); \
		if (Button->bHover) { \
			unitCreationBox.Initialize(UnitClass::unitDescription, GetMousePos(), UnitClass::unitName,{120,36},UnitClass::resourceCost); \
			hovering=true; \
			if(CanAfford(player_resources,UnitClass::resourceCost)){ \
				unitCreationBox.SetBackgroundColor(CONSTANT::MESSAGE_BOX_DEFAULT_BACKCOL); \
			} else { \
				unitCreationBox.SetBackgroundColor(VERY_DARK_GREY/2); \
			} \
		} 

	bool hovering=false;
	EnableAndHoverCheck(LeftShifter,leftShifterButton)
	EnableAndHoverCheck(RightShifter,rightShifterButton)
	EnableAndHoverCheck(BitRestorer,bitRestorerButton)
	EnableAndHoverCheck(MemorySwapper,memorySwapperButton)
	EnableAndHoverCheck(BitRestorer,bitRestorerButton)
	EnableAndHoverCheck(Corrupter,corrupterButton)
	EnableAndHoverCheck(MemoryAllocator,platformButton)

	if(!hovering){
		unitCreationBox.SetVisible(false);
	}

	unitCreationList.Update(this);
}

void VirusAttack::HandleDraggingSelection(){
	auto NotClickingOnMinimap=[&](){return !(GetMouseX()>=ScreenWidth()-64&&GetMouseY()>=ScreenHeight()-64);};
	bool allocatorSelected=false;
	bool memoryAllocatorBoxHovered=false;
	for(auto&u:units){
		u->UpdateGUIState(game,player_resources,memoryAllocatorBox,memoryAllocatorBoxHovered);
		if(u->IsSelected()&&u->IsAllocator()){
			allocatorSelected=true;
		}
	}
	if(!memoryAllocatorBoxHovered)memoryAllocatorBox.SetVisible(false);
	UpdateUnitCreationListGUI(allocatorSelected);
	if(GetMouse(0).bPressed){
		if(NotClickingOnMinimap()){
			for(auto&u:units){
				if(u->ClickHandled(game,player_resources,units,IMAGES)){
					goto skipLeftClick; //Break out early because this instance reported it handled a click for us.
				}
			}
			if(UnitCreationClickHandled()){
				goto skipLeftClick;
			}
			for(auto&u:units){
				u->Deselect();
			}
			if(startingDragPos==CONSTANT::UNSELECTED){
				startingDragPos=GetWorldMousePos();
			}
		}
	}
	skipLeftClick:
	if(GetMouse(0).bReleased&&startingDragPos!=CONSTANT::UNSELECTED){
		vf2d endDragPos=GetWorldMousePos();
		if(endDragPos.x<startingDragPos.x){std::swap(startingDragPos.x,endDragPos.x);}
		if(endDragPos.y<startingDragPos.y){std::swap(startingDragPos.y,endDragPos.y);}
		geom2d::rect<float> selectionRegion(startingDragPos,endDragPos-startingDragPos);
		for(auto&u:units){
			if(u->IsFriendly()){
				if(geom2d::overlaps(selectionRegion,geom2d::circle<float>(u->GetPos(),u->GetUnitSize().x/2))){
					u->Select();
				}
			}
		}
		startingDragPos=CONSTANT::UNSELECTED;
	}
}

vf2d VirusAttack::GetWorldMousePos(){	
	return game.ScreenToWorld(GetMousePos());
}

void VirusAttack::DrawSelectionRectangle(){
	if(startingDragPos!=CONSTANT::UNSELECTED){
		game.FillRectDecal(startingDragPos,GetWorldMousePos()-startingDragPos,{255,255,0,128});
	}
}

void VirusAttack::HandleRightClickMove(){
	if (GetMouse(1).bHeld){
		bool selectedTarget=false;
		for(auto&u:units){
			if(geom2d::overlaps(geom2d::circle<float>(u->GetPos(),u->GetUnitSize().x/2),GetWorldMousePos())){
				for(auto&u2:units){
					if(&u!=&u2){
						if(!u->IsFriendly()&&u2->IsFriendly()&&u2->IsSelected()&&u2->CanInteractWithEnemies()){
							u2->SetTargetUnit(u);
						} else
						if(u->IsFriendly()&&u2->IsFriendly()&&u2->IsSelected()&&u2->CanInteractWithAllies()){
							u2->SetTargetUnit(u);
						}
					}
				}
				selectedTarget=true;
				break;
			}
		}
		if(!selectedTarget){
			for(auto&u:units){
				if(u->IsFriendly()&&u->IsSelected()&&u->CanMove()){
					//First see if we can attach to a collection point.
					for(auto&cp:collectionPoints){
						geom2d::rect<float>cpRect=geom2d::rect<float>({cp->pos-cp->img.Sprite()->Size()/2,cp->img.Sprite()->Size()});
						if(geom2d::overlaps(cpRect,GetWorldMousePos())){
							if(cp->attachedUnit.expired()){
								u->SetTargetCollectionPoint(cp,u);
								goto targetFound; //We found a target, so now we can just leave.
							}
						}
					}

					//Okay, nothing to do here. Simply move to the selected position.
					u->SetTargetLocation(GetWorldMousePos());
				}
			}
		}
		targetFound:
		int a;
	}
}

void VirusAttack::CollisionChecking(std::shared_ptr<Unit>u,std::shared_ptr<Unit>u2){
	if(u!=u2&&geom2d::overlaps(geom2d::circle<float>(u->GetPos(),u->GetUnitSize().x/2),geom2d::circle<float>(u2->GetPos(),u2->GetUnitSize().x/2))){
		geom2d::line<float>collisionLine(u->GetPos(),u2->GetPos());
		float maxDist=u->GetUnitSize().x/2+u2->GetUnitSize().x/2;
		float dist=maxDist-collisionLine.length();
		vf2d dir=collisionLine.vector().norm();
		if(u->IsMoveable()){
			u->SetPos(u->GetPos()-dir*dist/2);
		}
		if(u2->IsMoveable()){
			u2->SetPos(u2->GetPos()+dir*(dist+0.001)/2);
		}
	}
}

void VirusAttack::IdentifyClosestTarget(std::weak_ptr<Unit>&closestUnit,float&closestDist,std::shared_ptr<Unit>u,std::shared_ptr<Unit>u2){
	if(u==u2)return;
	bool canInteract;
	canInteract=
		(u->IsFriendly()&&u->CanInteractWithEnemies()&&!u2->IsFriendly())||
		(u->IsFriendly()&&u->CanInteractWithAllies()&&u2->IsFriendly()&&u->AutoAcquiresFriendlyTargets())||
		(!u->IsFriendly()&&u->CanInteractWithEnemies()&&u2->IsFriendly())||
		(!u->IsFriendly()&&u->CanInteractWithAllies()&&!u2->IsFriendly()&&u->AutoAcquiresFriendlyTargets());
	if(canInteract){
		geom2d::line<float>unitLine(u->GetPos(),u2->GetPos());
		if(unitLine.length()<closestDist){
			closestUnit=u2;
			closestDist=unitLine.length();
		}
	}
}

void VirusAttack::DrawMinimap(){
	DrawDecal(GetScreenSize()-IMAGES[MINIMAP_HUD]->Sprite()->Size(),IMAGES[MINIMAP_HUD]->Decal(),{1,1});
	vf2d minimapTL=GetScreenSize()-vf2d{64,64};
	vi2d worldPixelSize=WORLD_SIZE*CONSTANT::TILE_SIZE;
	vf2d viewingTilesPct=vf2d{float(ScreenWidth()),float(ScreenHeight())}/CONSTANT::TILE_SIZE/WORLD_SIZE;
	SetDrawTarget(IMAGES[MINIMAP_OUTLINE]->Sprite());
	Clear(BLANK);
	DrawRect((game.GetWorldOffset()/worldPixelSize*64),viewingTilesPct*64/game.GetWorldScale());
	for(auto&u:units){
		vf2d squareSize=u->GetUnitSize()/vf2d(WORLD_SIZE);
		squareSize.x=std::round(std::max(1.f,squareSize.x));
		squareSize.y=std::round(std::max(1.f,squareSize.y));
		FillRect(u->GetGhostPos()/worldPixelSize*64-squareSize,squareSize*2,u->IsFriendly()?GREEN:RED);
	}
	IMAGES[MINIMAP_OUTLINE]->Decal()->Update();
	SetDrawTarget(nullptr);
	DrawDecal(minimapTL,IMAGES[MINIMAP_OUTLINE]->Decal());
}

void VirusAttack::HandlePanAndZoom(float fElapsedTime){
	float speedScale=std::min(1.f,game.GetWorldScale().x);
	bool canMouseScroll=!memoryAllocatorBox.IsVisible()&&!unitCreationBox.IsVisible()&&
		(GetMouseY()<=ScreenHeight()-64||GetMouseX()<=ScreenWidth()-64
			||GetMouseScreenX()>=GetWindowPos().x+GetWindowSize().x||GetMouseScreenY()>=GetWindowPos().y+GetWindowSize().y);
	if(GetKey(A).bHeld||canMouseScroll&&GetMouseScreenX()<=GetWindowPos().x+CONSTANT::SCROLL_BOUNDARY){
		vf2d amt=vf2d{-300*fElapsedTime,0}/speedScale;
		game.MoveWorldOffset(amt);
	}
	if(GetKey(W).bHeld||canMouseScroll&&GetMouseScreenY()<=GetWindowPos().y+CONSTANT::SCROLL_BOUNDARY+24){
		game.MoveWorldOffset(vf2d{0,-300*fElapsedTime}/speedScale);
	}
	if(GetKey(S).bHeld||canMouseScroll&&GetMouseScreenY()>=GetWindowPos().y+GetWindowSize().y-CONSTANT::SCROLL_BOUNDARY){
		game.MoveWorldOffset(vf2d{0,300*fElapsedTime}/speedScale);
	}
	if(GetKey(D).bHeld||canMouseScroll&&GetMouseScreenX()>=GetWindowPos().x+GetWindowSize().x-CONSTANT::SCROLL_BOUNDARY){
		vf2d amt=vf2d{300*fElapsedTime,0}/speedScale;
		game.MoveWorldOffset(amt);
	}

	if(GetMouseWheel()>0){
		if(game.GetWorldScale().x<2){
			game.ZoomAtScreenPos(1.25,GetMousePos());
		}
	} else
	if(GetMouseWheel()<0){
		if(game.GetWorldScale().x>0.5){
			game.ZoomAtScreenPos(0.75,GetMousePos());
		}
	}
}

void VirusAttack::HandleMinimapClick(){
	if(startingDragPos==CONSTANT::UNSELECTED&&GetMouse(0).bHeld&&GetMouseX()>=ScreenWidth()-64&&GetMouseY()>=ScreenHeight()-64){
		vf2d minimapTL=GetScreenSize()-vf2d{64,64};
		game.SetWorldOffset(vf2d(GetMousePos()-minimapTL)/64*WORLD_SIZE*CONSTANT::TILE_SIZE-vf2d(GetScreenSize())/game.GetWorldScale()/2.f);
	}
	vf2d offset=game.GetWorldOffset();
	offset.x=std::clamp(float(offset.x),-ScreenWidth()/2/game.GetWorldScale().x,WORLD_SIZE.x*24-(ScreenWidth()/2/game.GetWorldScale().x));
	offset.y=std::clamp(float(offset.y),-ScreenHeight()/2/game.GetWorldScale().y,WORLD_SIZE.y*24-(ScreenHeight()/2/game.GetWorldScale().y));
	game.SetWorldOffset(offset);

}

void VirusAttack::UpdateMatrixTexture(float fElapsedTime){
	if(matrixTimer==0){
		activeLetters.emplace_back(vf2d{float(rand()%64),float(64)},util::random(-40)-20,matrixLetters[rand()%matrixLetters.size()]);
		matrixTimer=util::random(0.125);
	}
	if(updatePixelsTimer==0){
		SetDrawTarget(IMAGES[MATRIX]->Sprite());
		Sprite*img=IMAGES[MATRIX]->Sprite();
		for(int y=63;y>=0;y--){
			for(int x=63;x>=0;x--){
				Pixel col=img->GetPixel(x,y);
				if(col.r>0){
					if(x>0){
						Pixel leftCol=img->GetPixel(x-1,y);
						if(leftCol.r<col.r){
							leftCol=PixelLerp(col,leftCol,0.125);
						}
						Draw(x-1,y,leftCol);
					}
					if(x<img->width-1){
						Pixel rightCol=img->GetPixel(x+1,y);
						if(rightCol.r<col.r){
							rightCol=PixelLerp(col,rightCol,0.125);
						}
						Draw(x+1,y,rightCol);
					}
					col/=8;
					Draw(x,y,col);
				}
			}
		}
		for(int y=0;y<64;y++){
			Draw({0,y},img->GetPixel(1,y));
		}
		SetDrawTarget(nullptr);
		updatePixelsTimer=0.1;
	}
	if(activeLetters.size()>0){
		SetDrawTarget(IMAGES[MATRIX]->Sprite());
		for(Letter&letter:activeLetters){
			letter.pos.y+=letter.spd*fElapsedTime;
			DrawString(letter.pos,std::string(1,letter.c));
		}
		SetDrawTarget(nullptr);
		IMAGES[MATRIX]->Decal()->Update();
	}
	matrixTimer=std::max(0.f,matrixTimer-fElapsedTime);
	updatePixelsTimer=std::max(0.f,updatePixelsTimer-fElapsedTime);
	std::erase_if(activeLetters,[](Letter&letter){return letter.pos.y<-32;});
}

void VirusAttack::RenderCollectionPoints(CollectionPoint*cp){
	geom2d::rect<float>cpRect=geom2d::rect<float>({cp->pos-cp->img.Sprite()->Size()/2,cp->img.Sprite()->Size()});
	geom2d::rect<float>viewRegion=geom2d::rect<float>({game.GetWorldTL(),game.GetWorldVisibleArea()});
	if(geom2d::overlaps(cpRect,viewRegion)){
		Pixel col;
		switch(cp->type){
			case HEALTH:{
				col=CONSTANT::HEALTH_COLOR;
			}break;
			case RANGE:{
				col=CONSTANT::RANGE_COLOR;
			}break;
			case ATKSPD:{
				col=CONSTANT::ATKSPD_COLOR;
			}break;
			case MOVESPD:{
				col=CONSTANT::MOVESPD_COLOR;
			}break;
			case PROCEDURE:{
				col=CONSTANT::PROCEDURE_COLOR;
			}break;
		}
		game.DrawRotatedDecal(cp->pos,cp->img.Decal(),cp->rot,cp->img.Sprite()->Size()/2,{1,1},col);
		if(geom2d::overlaps(cpRect,GetWorldMousePos())){
			game.DrawRotatedDecal(cp->pos,IMAGES[MEMORY_COLLECTION_POINT_HIGHLIGHT]->Decal(),cp->rot,cp->img.Sprite()->Size()/2,{1,1},col);
		}
	}
}

bool VirusAttack::OnUserUpdate(float fElapsedTime){
	UpdateMatrixTexture(fElapsedTime);
	HandleDraggingSelection();
	HandleRightClickMove();
	HandlePanAndZoom(fElapsedTime);
	HandleMinimapClick();
	AL.vecPos=game.ScreenToWorld(GetScreenSize()/2);
	AL.fSoundFXVolume=std::min(1.f,game.GetWorldScale().x);
	AL.OnUserUpdate(fElapsedTime);

	if(GetKey(P).bPressed){
		LoadLevel(STAGE1);
	}
	if(GetKey(O).bPressed){
		LoadLevel(STAGE2);
	}

	for(auto&tile:TileManager::visibleTiles){
		tile.second-=fElapsedTime;
	}

	std::erase_if(TileManager::visibleTiles,[](std::pair<vf2d,float> key){return key.second<=0;});

	for(auto&u:units){
		std::weak_ptr<Unit>closestUnit;
		float closestDist=999999;
		for(auto&u2:units){
			IdentifyClosestTarget(closestUnit,closestDist,u,u2);
			CollisionChecking(u,u2);
		}
		if(u->IsFriendly()){
			for(int y=-2;y<3;y++){
				for(int x=-2;x<3;x++){
					if(abs(x)+abs(y)<=2){
						TileManager::visibleTiles[u->GetPos()/24/4+vi2d(x,y)]=5;
					}
				}
			}
		}
		u->AttemptAttack(u,closestUnit,units,debuffIcons,IMAGES);
		u->_Update(this,SOUNDS,player_resources,enemy_resources,queuedUnits);
	}

	std::erase_if(units,[&](std::shared_ptr<Unit>u){
		if(u->GetHealth()==0){
			u->OnDeath(SOUNDS);
			deathAnimations.emplace_back(std::make_unique<DeathAnimation>(this,u->GetPos(),u->GetImage(),*IMAGES[MATRIX],u->IsFriendly()));
			return true;
		} else {
			return false;
		}
	});

	for(auto&queuedUnit:queuedUnits){
		units.push_back(std::move(queuedUnit));
	}

	queuedUnits.clear();

	game.DrawPartialDecal({0,0},WORLD_SIZE*CONSTANT::TILE_SIZE,IMAGES[TILE]->Decal(),{0,0},WORLD_SIZE*CONSTANT::TILE_SIZE,DARK_GREEN);

	for(auto&u:units){
		u->DrawRangeIndicator(this,game,IMAGES);
	}

	for(auto&u:units){
		u->Draw(game,IMAGES);
	}
	for(auto&deadUnit:deathAnimations){
		deadUnit->Update(fElapsedTime);
		deadUnit->Draw(game,this);
	}

	std::erase_if(deathAnimations,[](auto&u){return u->IsDone();});

	for(auto&collectionPoint:collectionPoints){
		collectionPoint->Update(this,*IMAGES[MATRIX]);
		RenderCollectionPoints(collectionPoint.get());
	}

	for(auto&u:units){
		u->DrawUnitDamageStats(this,game,IMAGES);
	}

	for(DebuffIcon&icon:debuffIcons){
		icon.Update(fElapsedTime);
		icon.Draw(game);
	}

	std::erase_if(debuffIcons,[](DebuffIcon&icon){return icon.lifetime<=0;});

	for(auto&u:units){
		u->_DrawHud(game,IMAGES);
	}

	DrawSelectionRectangle();
	RenderFogOfWar();

	unitCreationList.DrawDecal(this);

	DrawResourceBar();

	DrawMinimap();

	unitCreationBox.UpdateAndDraw(GetMousePos()+vi2d{8,-28},this,player_resources,IMAGES);
	testBox.UpdateAndDraw(GetMousePos()-testBox.GetSize()/2,this,player_resources,IMAGES);
	memoryAllocatorBox.UpdateAndDraw(GetMousePos()+vi2d{8,-28},this,player_resources,IMAGES);

	std::sort(units.begin(),units.end(),[&](auto&u1,auto&u2){
		float dist1=geom2d::line<float>(u1->GetGhostPos(),GetWorldMousePos()).length();
		float dist2=geom2d::line<float>(u2->GetGhostPos(),GetWorldMousePos()).length();
		return dist1>dist2;});

	return true;
}

void VirusAttack::DrawResourceBar(){
	GradientFillRectDecal({0,0},{float(ScreenWidth()),12.f},BLACK,{VERY_DARK_BLUE.r,VERY_DARK_BLUE.g,VERY_DARK_BLUE.b,128},{VERY_DARK_BLUE.r,VERY_DARK_BLUE.g,VERY_DARK_BLUE.b,128},BLACK);
	DrawRectDecal({0,0},{float(ScreenWidth()),12.f},{3, 194, 252});
	auto DrawResourceDisplay=[&](int index,int resourceValue,Pixel col){
		DrawDecal({6.f+index*42,1.f},IMAGES[RESOURCE]->Decal(),{1,1},col);
		DrawShadowStringDecal({6.f+index*42+20,2.f},std::to_string(resourceValue),col,BLACK);
	};
	DrawResourceDisplay(0,player_resources.health,CONSTANT::HEALTH_COLOR);
	DrawResourceDisplay(1,player_resources.atkSpd,CONSTANT::ATKSPD_COLOR);
	DrawResourceDisplay(2,player_resources.moveSpd,CONSTANT::MOVESPD_COLOR);
	DrawResourceDisplay(3,player_resources.range,CONSTANT::RANGE_COLOR);
	DrawResourceDisplay(4,player_resources.procedure,CONSTANT::PROCEDURE_COLOR);
}

void VirusAttack::RenderFogOfWar(){
	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(TileManager::visibleTiles.count(vi2d{x,y})==0){
				if(x>=0&&y>=0&&x<=WORLD_SIZE.x*CONSTANT::TILE_SIZE.x&&y<=WORLD_SIZE.y*CONSTANT::TILE_SIZE.y){
					game.FillRectDecal(vf2d{float(x),float(y)}*96,{96,96},{0,0,0,128});
				}
			}
		}
	}
}

bool VirusAttack::CanAfford(Resources&resources,std::vector<Memory>&unitCosts){
	for(Memory&mem:unitCosts){
		switch(mem.type){
			case HEALTH:{
				if(resources.health<mem.size)return false;
			}break;
			case ATKSPD:{
				if(resources.atkSpd<mem.size)return false;
			}break;
			case MOVESPD:{
				if(resources.moveSpd<mem.size)return false;
			}break;
			case RANGE:{
				if(resources.range<mem.size)return false;
			}break;
			case PROCEDURE:{
				if(resources.procedure<mem.size)return false;
			}break;
		}
	}
	return true;
}

void VirusAttack::ExpendResources(Resources&resources,std::vector<Memory>&unitCosts){
	for(Memory&mem:unitCosts){
		switch(mem.type){
			case HEALTH:{
				resources.health-=mem.size;
			}break;
			case ATKSPD:{
				resources.atkSpd-=mem.size;
			}break;
			case MOVESPD:{
				resources.moveSpd-=mem.size;
			}break;
			case RANGE:{
				resources.range-=mem.size;
			}break;
			case PROCEDURE:{
				resources.procedure-=mem.size;
			}break;
		}
	}
}

int main()
{
	VirusAttack app;
	if (app.Construct(426, 320, 4, 4))
		app.Start();
	return 0;
}