Undo/Snapshots, fixes #118

src/game/GameController.cpp

@@ -23,6 +23,7 @@
 #include "save/LocalSaveActivity.h"
 #include "save/ServerSaveActivity.h"
 #include "interface/Keys.h"
+#include "simulation/Snapshot.h"
 
 using namespace std;
 
@@ -187,6 +188,40 @@ GameController::~GameController()
 	delete gameView;
 }
 
+void GameController::HistoryRestore()
+{
+	std::deque<Snapshot*> history = gameModel->GetHistory();
+	if(history.size())
+	{
+		Snapshot * snap = history.back();
+		gameModel->GetSimulation()->Restore(*snap);
+		if(history.size()>1)
+		{
+			history.pop_back();
+			delete snap;
+			gameModel->SetHistory(history);
+		}
+	}
+}
+
+void GameController::HistorySnapshot()
+{
+	std::deque<Snapshot*> history = gameModel->GetHistory();
+	Snapshot * newSnap = gameModel->GetSimulation()->CreateSnapshot();
+	if(newSnap)
+	{
+		if(history.size() >= 1) //History limit is current 1
+		{
+			Snapshot * snap = history.front();
+			history.pop_front();
+			//snap->Particles.clear();
+			delete snap;
+		}
+		history.push_back(newSnap);
+		gameModel->SetHistory(history);
+	}
+}
+
 GameView * GameController::GetView()
 {
 	return gameView;

src/game/GameController.h

@@ -69,6 +69,9 @@ public:
 
 	void Install();
 
+	void HistoryRestore();
+	void HistorySnapshot();
+
 	void AdjustGridSize(int direction);
 	void InvertAirSim();
 	void LoadRenderPreset(RenderPreset preset);

src/game/GameModel.cpp

@@ -253,6 +253,15 @@ void GameModel::BuildMenus()
 	notifyLastToolChanged();
 }
 
+std::deque<Snapshot*> GameModel::GetHistory()
+{
+	return history;
+}
+void GameModel::SetHistory(std::deque<Snapshot*> newHistory)
+{
+	history = newHistory;
+}
+
 void GameModel::SetVote(int direction)
 {
 	if(currentSave)

src/game/GameModel.h

@@ -57,6 +57,7 @@ private:
 	bool colourSelector;
 	ui::Colour colour;
 	float toolStrength;
+	std::deque<Snapshot*> history;
 
 	std::string infoTip;
 	std::string toolTip;
@@ -100,6 +101,9 @@ public:
 	void BuildMenus();
 	void BuildQuickOptionMenu();
 
+	std::deque<Snapshot*> GetHistory();
+	void SetHistory(std::deque<Snapshot*> newHistory);
+
 	void UpdateQuickOptions();
 
 	void SetToolStrength(float value);

src/game/GameView.cpp

@@ -984,6 +984,8 @@ void GameView::OnMouseDown(int x, int y, unsigned button)
 		if(button == BUTTON_MIDDLE)
 			toolIndex = 2;
 		isMouseDown = true;
+		if(!pointQueue.size())
+			c->HistorySnapshot();
 		if(drawMode == DrawRect || drawMode == DrawLine)
 		{
 			drawPoint1 = ui::Point(x, y);
@@ -1230,9 +1232,16 @@ void GameView::OnKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool
 		c->ChangeBrush();
 		break;
 	case 'z':
+		if(ctrl)
+		{
+			c->HistoryRestore();
+		}
+		else
+		{
 			isMouseDown = false;
 			zoomCursorFixed = false;
 			c->SetZoomEnabled(true);
+		}
 		break;
 	case '`':
 		c->ShowConsole();
@@ -1384,8 +1393,11 @@ void GameView::OnKeyRelease(int key, Uint16 character, bool shift, bool ctrl, bo
 		disableShiftBehaviour();
 		break;
 	case 'z':
+		if(!ctrl)
+		{
 			if(!zoomCursorFixed && !alt)
 				c->SetZoomEnabled(false);
+		}
 		break;
 	}
 }

src/simulation/Simulation.cpp

@@ -16,6 +16,7 @@
 #include "game/Brush.h"
 #include "client/GameSave.h"
 #include "Sample.h"
+#include "Snapshot.h"
 //#include "StorageClasses.h"
 
 #undef LUACONSOLE
@@ -214,6 +215,44 @@ GameSave * Simulation::Save(int fullX, int fullY, int fullX2, int fullY2)
 	return newSave;
 }
 
+Snapshot * Simulation::CreateSnapshot()
+{
+	Snapshot * snap = new Snapshot();
+	snap->AirPressure.insert(snap->AirPressure.begin(), &pv[0][0], &pv[0][0]+((XRES/CELL)*(YRES/CELL)));
+	snap->AirVelocityX.insert(snap->AirVelocityX.begin(), &vx[0][0], &vx[0][0]+((XRES/CELL)*(YRES/CELL)));
+	snap->AirVelocityY.insert(snap->AirVelocityY.begin(), &vy[0][0], &vy[0][0]+((XRES/CELL)*(YRES/CELL)));
+	snap->Particles.insert(snap->Particles.begin(), parts, parts+NPART);
+	snap->PortalParticles.insert(snap->PortalParticles.begin(), &portalp[0][0][0], &portalp[CHANNELS-1][8-1][80-1]);
+	snap->WirelessData.insert(snap->WirelessData.begin(), &wireless[0][0], &wireless[CHANNELS-1][2-1]);
+	snap->GravVelocityX.insert(snap->GravVelocityX.begin(), gravx, gravx+((XRES/CELL)*(YRES/CELL)));
+	snap->GravVelocityY.insert(snap->GravVelocityY.begin(), gravy, gravy+((XRES/CELL)*(YRES/CELL)));
+	snap->GravValue.insert(snap->GravValue.begin(), gravp, gravp+((XRES/CELL)*(YRES/CELL)));
+	snap->GravMap.insert(snap->GravMap.begin(), gravmap, gravmap+((XRES/CELL)*(YRES/CELL)));
+	snap->BlockMap.insert(snap->BlockMap.begin(), &bmap[0][0], &bmap[0][0]+((XRES/CELL)*(YRES/CELL)));
+	snap->ElecMap.insert(snap->ElecMap.begin(), &emap[0][0], &emap[0][0]+((XRES/CELL)*(YRES/CELL)));
+	snap->FanVelocityX.insert(snap->FanVelocityX.begin(), &fvx[0][0], &fvx[0][0]+((XRES/CELL)*(YRES/CELL)));
+	snap->FanVelocityY.insert(snap->FanVelocityY.begin(), &fvy[0][0], &fvy[0][0]+((XRES/CELL)*(YRES/CELL)));
+	return snap;
+}
+
+void Simulation::Restore(const Snapshot & snap)
+{
+	std::copy(snap.AirPressure.begin(), snap.AirPressure.end(), &pv[0][0]);
+	std::copy(snap.AirVelocityX.begin(), snap.AirVelocityX.end(), &vx[0][0]);
+	std::copy(snap.AirVelocityY.begin(), snap.AirVelocityY.end(), &vy[0][0]);
+	std::copy(snap.Particles.begin(), snap.Particles.end(), parts);
+	std::copy(snap.PortalParticles.begin(), snap.PortalParticles.end(), &portalp[0][0][0]);
+	std::copy(snap.WirelessData.begin(), snap.WirelessData.end(), &wireless[0][0]);
+	std::copy(snap.GravVelocityX.begin(), snap.GravVelocityX.end(), gravx);
+	std::copy(snap.GravVelocityY.begin(), snap.GravVelocityY.end(), gravy);
+	std::copy(snap.GravValue.begin(), snap.GravValue.end(), gravp);
+	std::copy(snap.GravMap.begin(), snap.GravMap.end(), gravmap);
+	std::copy(snap.BlockMap.begin(), snap.BlockMap.end(), &bmap[0][0]);
+	std::copy(snap.ElecMap.begin(), snap.ElecMap.end(), &emap[0][0]);
+	std::copy(snap.FanVelocityX.begin(), snap.FanVelocityX.end(), &fvx[0][0]);
+	std::copy(snap.FanVelocityY.begin(), snap.FanVelocityY.end(), &fvy[0][0]);
+}
+
 /*int Simulation::Load(unsigned char * data, int dataLength)
 {
 	return SaveLoader::Load(data, dataLength, this, true, 0, 0);

src/simulation/Simulation.h

@@ -23,6 +23,7 @@
 
 #define CHANNELS ((int)(MAX_TEMP-73)/100+2)
 
+class Snapshot;
 class Element;
 class SimTool;
 class Brush;
@@ -122,6 +123,10 @@ public:
 	GameSave * Save();
 	GameSave * Save(int x1, int y1, int x2, int y2);
 	SimulationSample Get(int x, int y);
+
+	Snapshot * CreateSnapshot();
+	void Restore(const Snapshot & snap);
+
 	inline int is_blocking(int t, int x, int y);
 	inline int is_boundary(int pt, int x, int y);
 	inline int find_next_boundary(int pt, int *x, int *y, int dm, int *em);

src/simulation/Snapshot.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <vector>
+
+#include "Particle.h"
+
+class Snapshot
+{
+public:
+	std::vector<float> AirPressure;
+	std::vector<float> AirVelocityX;
+	std::vector<float> AirVelocityY;
+
+	std::vector<Particle> Particles;
+	std::vector<Particle> PortalParticles;
+
+	std::vector<int> WirelessData;
+
+	std::vector<float> GravVelocityX;
+	std::vector<float> GravVelocityY;
+	std::vector<float> GravValue;
+	std::vector<float> GravMap;
+
+	std::vector<unsigned char> BlockMap;
+	std::vector<unsigned char> ElecMap;
+
+	std::vector<float> FanVelocityX;
+	std::vector<float> FanVelocityY;
+
+	Snapshot() :
+		AirPressure(),
+		AirVelocityX(),
+		AirVelocityY(),
+		Particles(),
+		PortalParticles(),
+		WirelessData(),
+		GravVelocityX(),
+		GravVelocityY(),
+		GravValue(),
+		GravMap(),
+		BlockMap(),
+		ElecMap(),
+		FanVelocityX(),
+		FanVelocityY()
+	{
+
+	}
+
+	virtual ~Snapshot()
+	{
+
+	}
+};