Zoom

src/PowderToy.cpp

@@ -88,6 +88,7 @@ int main(int argc, char * argv[])
 				engine->onKeyPress(event.key.keysym.unicode, false, false, false);
 				break;
 			case SDL_KEYUP:
+				engine->onKeyRelease(event.key.keysym.unicode, false, false, false);
 				break;
 			case SDL_MOUSEMOTION:
 				engine->onMouseMove(event.motion.x, event.motion.y);

src/Renderer.cpp

@@ -19,6 +19,118 @@ extern "C"
 #include "hmap.h"
 }
 
+void Renderer::RenderZoom()
+{
+	if(!zoomEnabled)
+		return;
+	#ifdef OGLR
+		int origBlendSrc, origBlendDst;
+		float zcx1, zcx0, zcy1, zcy0, yfactor, xfactor, i; //X-Factor is shit, btw
+		xfactor = 1.0f/(float)XRES;
+		yfactor = 1.0f/(float)YRES;
+
+		zcx0 = (zoom_x)*xfactor;
+		zcx1 = (zoom_x+ZSIZE)*xfactor;
+		zcy0 = (zoom_y)*yfactor;
+		zcy1 = ((zoom_y+ZSIZE))*yfactor;
+
+		glGetIntegerv(GL_BLEND_SRC, &origBlendSrc);
+		glGetIntegerv(GL_BLEND_DST, &origBlendDst);
+		glBlendFunc(GL_ONE, GL_ZERO);
+
+		glEnable( GL_TEXTURE_2D );
+		//glReadBuffer(GL_AUX0);
+		glBindTexture(GL_TEXTURE_2D, partsFboTex);
+
+		glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+		glBegin(GL_QUADS);
+		glTexCoord2d(zcx1, zcy1);
+		glVertex3f((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 1.0);
+		glTexCoord2d(zcx0, zcy1);
+		glVertex3f(zoom_wx*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 1.0);
+		glTexCoord2d(zcx0, zcy0);
+		glVertex3f(zoom_wx*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 1.0);
+		glTexCoord2d(zcx1, zcy0);
+		glVertex3f((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 1.0);
+		glEnd();
+		glBindTexture(GL_TEXTURE_2D, 0);
+		glDisable( GL_TEXTURE_2D );
+
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+		glLineWidth(sdl_scale);
+		glEnable(GL_LINE_SMOOTH);
+		glBegin(GL_LINES);
+		glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
+		for(i = 0; i < ZSIZE; i++)
+		{
+			glVertex2f((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR)+i*ZFACTOR)*sdl_scale);
+			glVertex2f(zoom_wx*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR)+i*ZFACTOR)*sdl_scale);
+			glVertex2f((zoom_wx+i*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale);
+			glVertex2f((zoom_wx+i*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale);
+		}
+		glEnd();
+
+		glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+		glBegin(GL_LINE_STRIP);
+		glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
+		glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 0);
+		glVertex3i((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 0);
+		glVertex3i((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
+		glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
+		glEnd();
+		glDisable(GL_LINE_SMOOTH);
+
+		glDisable(GL_LINE_SMOOTH);
+
+		if(zoom_en)
+		{
+			glEnable(GL_COLOR_LOGIC_OP);
+			//glEnable(GL_LINE_SMOOTH);
+			glLogicOp(GL_XOR);
+			glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+			glBegin(GL_LINE_STRIP);
+			glVertex3i((zoom_x-1)*sdl_scale, (YRES+MENUSIZE-(zoom_y-1))*sdl_scale, 0);
+			glVertex3i((zoom_x-1)*sdl_scale, (YRES+MENUSIZE-(zoom_y+ZSIZE))*sdl_scale, 0);
+			glVertex3i((zoom_x+ZSIZE)*sdl_scale, (YRES+MENUSIZE-(zoom_y+ZSIZE))*sdl_scale, 0);
+			glVertex3i((zoom_x+ZSIZE)*sdl_scale, (YRES+MENUSIZE-(zoom_y-1))*sdl_scale, 0);
+			glVertex3i((zoom_x-1)*sdl_scale, (YRES+MENUSIZE-(zoom_y-1))*sdl_scale, 0);
+			glEnd();
+			glDisable(GL_COLOR_LOGIC_OP);
+		}
+		glLineWidth(1);
+		glBlendFunc(origBlendSrc, origBlendDst);
+	#else
+		int x, y, i, j;
+		pixel pix;
+		pixel * img = g->vid;
+		g->drawrect(zoomWindowPosition.X-2, zoomWindowPosition.Y-2, zoomScopeSize*ZFACTOR+2, zoomScopeSize*ZFACTOR+2, 192, 192, 192, 255);
+		g->drawrect(zoomWindowPosition.X-1, zoomWindowPosition.Y-1, zoomScopeSize*ZFACTOR, zoomScopeSize*ZFACTOR, 0, 0, 0, 255);
+		g->clearrect(zoomWindowPosition.X, zoomWindowPosition.Y, zoomScopeSize*ZFACTOR, zoomScopeSize*ZFACTOR);
+		for (j=0; j<zoomScopeSize; j++)
+			for (i=0; i<zoomScopeSize; i++)
+			{
+				pix = img[(j+zoomScopePosition.Y)*(XRES+BARSIZE)+(i+zoomScopePosition.X)];
+				for (y=0; y<ZFACTOR-1; y++)
+					for (x=0; x<ZFACTOR-1; x++)
+						img[(j*ZFACTOR+y+zoomWindowPosition.Y)*(XRES+BARSIZE)+(i*ZFACTOR+x+zoomWindowPosition.X)] = pix;
+			}
+		if (zoomEnabled)
+		{
+			for (j=-1; j<=zoomScopeSize; j++)
+			{
+				g->xor_pixel(zoomScopePosition.X+j, zoomScopePosition.Y-1);
+				g->xor_pixel(zoomScopePosition.X+j, zoomScopePosition.Y+zoomScopeSize);
+			}
+			for (j=0; j<zoomScopeSize; j++)
+			{
+				g->xor_pixel(zoomScopePosition.X-1, zoomScopePosition.Y+j);
+				g->xor_pixel(zoomScopePosition.X+zoomScopeSize, zoomScopePosition.Y+j);
+			}
+		}
+	#endif
+}
+
 void Renderer::DrawWalls()
 {
 	int x, y, i, j, cr, cg, cb;
@@ -1645,7 +1757,11 @@ void Renderer::draw_grav_zones()
 
 Renderer::Renderer(Graphics * g, Simulation * sim):
 	sim(NULL),
-	g(NULL)
+	g(NULL),
+	zoomWindowPosition(0, 0),
+	zoomScopePosition(0, 0),
+	zoomScopeSize(10),
+	ZFACTOR(8)
 {
 	this->g = g;
 	this->sim = sim;

src/Renderer.h

@@ -5,6 +5,7 @@
 #include "Config.h"
 #include "simulation/Simulation.h"
 #include "Graphics.h"
+#include "interface/Point.h"
 
 class Simulation;
 
@@ -41,7 +42,15 @@ public:
 	Graphics * g;
 	gcache_item *graphicscache;
 
+	//Zoom window
+	ui::Point zoomWindowPosition;
+	ui::Point zoomScopePosition;
+	int zoomScopeSize;
+	bool zoomEnabled;
+	int ZFACTOR;
+
 	//Renderers
+	void RenderZoom();
 	void DrawWalls();
 	void DrawSigns();
 	void render_gravlensing();

src/game/GameController.cpp

@@ -107,6 +107,36 @@ void GameController::AdjustBrushSize(int direction)
 	gameModel->GetBrush()->SetRadius(newSize);
 }
 
+void GameController::AdjustZoomSize(int direction)
+{
+	int newSize = gameModel->GetZoomSize()+direction;
+	if(newSize<5)
+			newSize = 5;
+	if(newSize>64)
+			newSize = 64;
+	gameModel->SetZoomSize(newSize);
+
+	int newZoomFactor = 256/newSize;
+	if(newZoomFactor<3)
+		newZoomFactor = 3;
+	gameModel->SetZoomFactor(newZoomFactor);
+}
+
+ui::Point GameController::PointTranslate(ui::Point point)
+{
+	bool zoomEnabled = gameModel->GetZoomEnabled();
+	if(!zoomEnabled)
+		return point;
+	//If we try to draw inside the zoom window, normalise the coordinates
+	int zoomFactor = gameModel->GetZoomFactor();
+	ui::Point zoomWindowPosition = gameModel->GetZoomWindowPosition();
+	ui::Point zoomWindowSize = ui::Point(gameModel->GetZoomSize()*zoomFactor, gameModel->GetZoomSize()*zoomFactor);
+
+	if(point.X > zoomWindowPosition.X && point.X > zoomWindowPosition.Y && point.X < zoomWindowPosition.X+zoomWindowSize.X && point.Y < zoomWindowPosition.Y+zoomWindowSize.Y)
+		return ((point-zoomWindowPosition)/gameModel->GetZoomFactor())+gameModel->GetZoomPosition();
+	return point;
+}
+
 void GameController::DrawPoints(queue<ui::Point*> & pointQueue)
 {
 	Simulation * sim = gameModel->GetSimulation();
@@ -123,26 +153,27 @@ void GameController::DrawPoints(queue<ui::Point*> & pointQueue)
 			}
 		}
 	}
+
 	if(!pointQueue.empty())
 	{
-		ui::Point * sPoint = NULL;
+		ui::Point sPoint(0, 0);
+		bool first = true;
 		while(!pointQueue.empty())
 		{
-			ui::Point * fPoint = pointQueue.front();
+			ui::Point fPoint = PointTranslate(*pointQueue.front());
+			delete pointQueue.front();
 			pointQueue.pop();
-			if(sPoint)
+			if(!first)
 			{
-				activeTool->DrawLine(sim, cBrush, *fPoint, *sPoint);
+				activeTool->DrawLine(sim, cBrush, fPoint, sPoint);
-				delete sPoint;
 			}
 			else
 			{
-				activeTool->Draw(sim, cBrush, *fPoint);
+				first = false;
+				activeTool->Draw(sim, cBrush, fPoint);
 			}
 			sPoint = fPoint;
 		}
-		if(sPoint)
-			delete sPoint;
 	}
 }
 
@@ -168,6 +199,25 @@ void GameController::Update()
 	}
 }
 
+void GameController::SetZoomEnabled(bool zoomEnabled)
+{
+	gameModel->SetZoomEnabled(zoomEnabled);
+}
+
+void GameController::SetZoomPosition(ui::Point position)
+{
+	ui::Point zoomPosition = position-(gameModel->GetZoomSize()/2);
+	if(zoomPosition.X < 0)
+			zoomPosition.X = 0;
+	if(zoomPosition.Y < 0)
+			zoomPosition.Y = 0;
+	if(zoomPosition.X >= XRES-gameModel->GetZoomSize())
+			zoomPosition.X = XRES-gameModel->GetZoomSize();
+	if(zoomPosition.Y >= YRES-gameModel->GetZoomSize())
+			zoomPosition.Y = YRES-gameModel->GetZoomSize();
+	gameModel->SetZoomPosition(zoomPosition);
+}
+
 void GameController::SetPaused(bool pauseState)
 {
 	gameModel->SetPaused(pauseState);

src/game/GameController.h

@@ -31,7 +31,10 @@ public:
 	GameController();
 	~GameController();
 	GameView * GetView();
+	void SetZoomEnabled(bool zoomEnable);
+	void SetZoomPosition(ui::Point position);
 	void AdjustBrushSize(int direction);
+	void AdjustZoomSize(int direction);
 	void DrawPoints(queue<ui::Point*> & pointQueue);
 	void Update();
 	void SetPaused(bool pauseState);
@@ -48,6 +51,7 @@ public:
 	void ReloadSim();
 	void Vote(int direction);
 	void ChangeBrush();
+	ui::Point PointTranslate(ui::Point point);
 };
 
 #endif // GAMECONTROLLER_H

src/game/GameModel.cpp

@@ -160,6 +160,61 @@ User GameModel::GetUser()
 	return currentUser;
 }
 
+void GameModel::SetZoomEnabled(bool enabled)
+{
+	ren->zoomEnabled = enabled;
+	notifyZoomChanged();
+}
+
+bool GameModel::GetZoomEnabled()
+{
+	return ren->zoomEnabled;
+}
+
+void GameModel::SetZoomPosition(ui::Point position)
+{
+	ren->zoomScopePosition = position;
+	notifyZoomChanged();
+}
+
+ui::Point GameModel::GetZoomPosition()
+{
+	return ren->zoomScopePosition;
+}
+
+void GameModel::SetZoomWindowPosition(ui::Point position)
+{
+	ren->zoomWindowPosition = position;
+	notifyZoomChanged();
+}
+
+ui::Point GameModel::GetZoomWindowPosition()
+{
+	return ren->zoomWindowPosition;
+}
+
+void GameModel::SetZoomSize(int size)
+{
+	ren->zoomScopeSize = size;
+	notifyZoomChanged();
+}
+
+int GameModel::GetZoomSize()
+{
+	return ren->zoomScopeSize;
+}
+
+void GameModel::SetZoomFactor(int factor)
+{
+	ren->ZFACTOR = factor;
+	notifyZoomChanged();
+}
+
+int GameModel::GetZoomFactor()
+{
+	return ren->ZFACTOR;
+}
+
 void GameModel::SetUser(User user)
 {
 	currentUser = user;
@@ -253,3 +308,11 @@ void GameModel::notifyUserChanged()
 		observers[i]->NotifyUserChanged(this);
 	}
 }
+
+void GameModel::notifyZoomChanged()
+{
+	for(int i = 0; i < observers.size(); i++)
+	{
+		observers[i]->NotifyZoomChanged(this);
+	}
+}

src/game/GameModel.h

@@ -32,6 +32,7 @@ private:
 	Renderer * ren;
 	Tool * activeTool;
 	User currentUser;
+	//bool zoomEnabled;
 	void notifyRendererChanged();
 	void notifySimulationChanged();
 	void notifyPausedChanged();
@@ -41,6 +42,7 @@ private:
 	void notifyToolListChanged();
 	void notifyActiveToolChanged();
 	void notifyUserChanged();
+	void notifyZoomChanged();
 public:
 	GameModel();
 	~GameModel();
@@ -64,6 +66,16 @@ public:
 	int GetBrushID();
 	Simulation * GetSimulation();
 	Renderer * GetRenderer();
+	void SetZoomEnabled(bool enabled);
+	bool GetZoomEnabled();
+	void SetZoomSize(int size);
+	int GetZoomSize();
+	void SetZoomFactor(int factor);
+	int GetZoomFactor();
+	void SetZoomPosition(ui::Point position);
+	ui::Point GetZoomPosition();
+	void SetZoomWindowPosition(ui::Point position);
+	ui::Point GetZoomWindowPosition();
 };
 
 #endif // GAMEMODEL_H

src/game/GameView.cpp

@@ -380,7 +380,7 @@ void GameView::OnMouseMove(int x, int y, int dx, int dy)
 
 void GameView::OnMouseDown(int x, int y, unsigned button)
 {
-	if(currentMouse.X > 0 && currentMouse.X < XRES && currentMouse.Y > 0 && currentMouse.Y < YRES)
+	if(currentMouse.X > 0 && currentMouse.X < XRES && currentMouse.Y > 0 && currentMouse.Y < YRES && !(zoomEnabled && !zoomCursorFixed))
 	{
 		isMouseDown = true;
 		pointQueue.push(new ui::Point(x, y));
@@ -389,22 +389,34 @@ void GameView::OnMouseDown(int x, int y, unsigned button)
 
 void GameView::OnMouseUp(int x, int y, unsigned button)
 {
+	if(zoomEnabled && !zoomCursorFixed)
+		zoomCursorFixed = true;
+	else
+	{
 		if(isMouseDown)
 		{
 			isMouseDown = false;
 			pointQueue.push(new ui::Point(x, y));
 		}
+	}
 }
 
 void GameView::OnMouseWheel(int x, int y, int d)
 {
 	if(!d)
 		return;
+	if(zoomEnabled && !zoomCursorFixed)
+	{
+		c->AdjustZoomSize(d);
+	}
+	else
+	{
 		c->AdjustBrushSize(d);
 		if(isMouseDown)
 		{
 			pointQueue.push(new ui::Point(x, y));
 		}
+	}
 }
 
 void GameView::OnKeyPress(int key, bool shift, bool ctrl, bool alt)
@@ -417,11 +429,29 @@ void GameView::OnKeyPress(int key, bool shift, bool ctrl, bool alt)
 	case KEY_TAB: //Tab
 		c->ChangeBrush();
 		break;
+	case 'z':
+		isMouseDown = false;
+		zoomCursorFixed = false;
+		c->SetZoomEnabled(true);
+		break;
 	}
 }
 
+void GameView::OnKeyRelease(int key, bool shift, bool ctrl, bool alt)
+{
+	//switch(key)
+	//{
+	//case 'z':
+		if(!zoomCursorFixed)
+			c->SetZoomEnabled(false);
+	//	break;
+	//}
+}
+
 void GameView::OnTick(float dt)
 {
+	if(zoomEnabled && !zoomCursorFixed)
+		c->SetZoomPosition(currentMouse);
 	if(isMouseDown)
 	{
 		pointQueue.push(new ui::Point(currentMouse));
@@ -433,17 +463,23 @@ void GameView::OnTick(float dt)
 	c->Update();
 }
 
+void GameView::NotifyZoomChanged(GameModel * sender)
+{
+	zoomEnabled = sender->GetZoomEnabled();
+}
+
 void GameView::OnDraw()
 {
 	if(ren)
 	{
 		ren->render_parts();
 		ren->render_fire();
-		ren->DrawSigns();
 		ren->DrawWalls();
-	}
 		if(activeBrush && currentMouse.X > 0 && currentMouse.X < XRES && currentMouse.Y > 0 && currentMouse.Y < YRES)
 		{
-		activeBrush->Render(ui::Engine::Ref().g, currentMouse);
+			activeBrush->Render(ui::Engine::Ref().g, c->PointTranslate(currentMouse));
+		}
+		ren->RenderZoom();
+		ren->DrawSigns();
 	}
 }

src/game/GameView.h

@@ -18,6 +18,8 @@ class GameView: public ui::Window
 {
 private:
 	bool isMouseDown;
+	bool zoomEnabled;
+	bool zoomCursorFixed;
 	queue<ui::Point*> pointQueue;
 	GameController * c;
 	Renderer * ren;
@@ -49,11 +51,13 @@ public:
 	void NotifyToolListChanged(GameModel * sender);
 	void NotifyActiveToolChanged(GameModel * sender);
 	void NotifyUserChanged(GameModel * sender);
+	void NotifyZoomChanged(GameModel * sender);
 	virtual void OnMouseMove(int x, int y, int dx, int dy);
 	virtual void OnMouseDown(int x, int y, unsigned button);
 	virtual void OnMouseUp(int x, int y, unsigned button);
 	virtual void OnMouseWheel(int x, int y, int d);
 	virtual void OnKeyPress(int key, bool shift, bool ctrl, bool alt);
+	virtual void OnKeyRelease(int key, bool shift, bool ctrl, bool alt);
 	//virtual void OnKeyPress(int key, bool shift, bool ctrl, bool alt) {}
 	//virtual void OnKeyRelease(int key, bool shift, bool ctrl, bool alt) {}
 	virtual void OnTick(float dt);

src/interface/Point.h

@@ -32,11 +32,21 @@ struct Point
 		return Point(X + v.X, Y + v.Y);
 	}
 
+	inline Point operator + (const int v) const
+	{
+		return Point(X + v, Y + v);
+	}
+
 	inline Point operator - (const Point& v) const
 	{
 		return Point(X - v.X, Y - v.Y);
 	}
 
+	inline Point operator - (const int v) const
+	{
+		return Point(X - v, Y - v);
+	}
+
 	inline Point operator * (const Point& v) const
 	{
 		return Point(X * v.X, Y * v.Y);