From f19c7f62c77f6a3e8f5728e015166b0c625f5f67 Mon Sep 17 00:00:00 2001
From: Simon Robertshaw <simon@hardwired.org.uk>
Date: Thu, 16 Aug 2012 12:15:29 +0100
Subject: [PATCH] Air invert and grid mode switching

---
 src/game/GameController.cpp | 14 ++++++++++++++
 src/game/GameController.h   |  2 ++
 src/game/GameView.cpp       |  8 ++++++++
 src/graphics/Renderer.cpp   | 11 ++++++-----
 src/graphics/Renderer.h     |  4 ++++
 src/simulation/Air.cpp      | 14 ++++++++++++++
 src/simulation/Air.h        |  1 +
 7 files changed, 49 insertions(+), 5 deletions(-)

diff --git a/src/game/GameController.cpp b/src/game/GameController.cpp
index 9831c7816..5237af71e 100644
--- a/src/game/GameController.cpp
+++ b/src/game/GameController.cpp
@@ -231,6 +231,20 @@ void GameController::Install()
 #endif
 }
 
+void GameController::AdjustGridSize(int direction)
+{
+	if(direction > 0)
+		gameModel->GetRenderer()->SetGridSize((gameModel->GetRenderer()->GetGridSize()+1)%10);
+	else
+		gameModel->GetRenderer()->SetGridSize((gameModel->GetRenderer()->GetGridSize()+9)%10);
+}
+
+void GameController::InvertAirSim()
+{
+	gameModel->GetSimulation()->air->Invert();
+}
+
+
 void GameController::AdjustBrushSize(int direction, bool logarithmic, bool xAxis, bool yAxis)
 {
 	if(xAxis && yAxis)
diff --git a/src/game/GameController.h b/src/game/GameController.h
index 72ebd375c..c6d41b515 100644
--- a/src/game/GameController.h
+++ b/src/game/GameController.h
@@ -69,6 +69,8 @@ public:
 
 	void Install();
 
+	void AdjustGridSize(int direction);
+	void InvertAirSim();
 	void LoadRenderPreset(RenderPreset preset);
 	void SetZoomEnabled(bool zoomEnable);
 	void SetZoomPosition(ui::Point position);
diff --git a/src/game/GameView.cpp b/src/game/GameView.cpp
index 45addebf1..af13797c8 100644
--- a/src/game/GameView.cpp
+++ b/src/game/GameView.cpp
@@ -1243,6 +1243,12 @@ void GameView::OnKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool
 	case 'f':
 		c->FrameStep();
 		break;
+	case 'g':
+		if(shift)
+			c->AdjustGridSize(-1);
+		else
+			c->AdjustGridSize(1);
+		break;
 	case 'd':
 		showDebug = !showDebug;
 		break;
@@ -1345,6 +1351,8 @@ void GameView::OnKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool
 	case 'i':
 		if(ctrl)
 			c->Install();
+		else
+			c->InvertAirSim();
 		break;
 	}
 
diff --git a/src/graphics/Renderer.cpp b/src/graphics/Renderer.cpp
index 746749354..292450320 100644
--- a/src/graphics/Renderer.cpp
+++ b/src/graphics/Renderer.cpp
@@ -1086,17 +1086,17 @@ void Renderer::render_parts()
 	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, partsFbo);
 	glTranslated(0, MENUSIZE, 0);
 #else
-	/*if (GRID_MODE)//draws the grid
+	if (gridSize)//draws the grid
 	{
 		for (ny=0; ny<YRES; ny++)
 			for (nx=0; nx<XRES; nx++)
 			{
-				if (ny%(4*GRID_MODE)==0)
+				if (ny%(4*gridSize)==0)
 					blendpixel(nx, ny, 100, 100, 100, 80);
-				if (nx%(4*GRID_MODE)==0)
+				if (nx%(4*gridSize)==0)
 					blendpixel(nx, ny, 100, 100, 100, 80);
 			}
-	}*/
+	}
 #endif
 	for(i = 0; i<=sim->parts_lastActiveIndex; i++) {
 		if (sim->parts[i].type) {
@@ -2284,7 +2284,8 @@ Renderer::Renderer(Graphics * g, Simulation * sim):
 	mousePosY(-1),
 	display_mode(0),
 	render_mode(0),
-	colour_mode(0)
+	colour_mode(0),
+	gridSize(0)
 {
 	this->g = g;
 	this->sim = sim;
diff --git a/src/graphics/Renderer.h b/src/graphics/Renderer.h
index 2f9f4044d..dc5d63351 100644
--- a/src/graphics/Renderer.h
+++ b/src/graphics/Renderer.h
@@ -131,12 +131,16 @@ public:
 	void SetColourMode(unsigned int mode);
 	unsigned int GetColourMode();
 
+	int GetGridSize() { return gridSize; }
+	void SetGridSize(int value) { gridSize = value; }
+
 	static VideoBuffer * WallIcon(int wallID, int width, int height);
 
 	Renderer(Graphics * g, Simulation * sim);
 	~Renderer();
 
 private:
+	int gridSize;
 #ifdef OGLR
 	GLuint zoomTex, airBuf, fireAlpha, glowAlpha, blurAlpha, partsFboTex, partsFbo, partsTFX, partsTFY, airPV, airVY, airVX;
 	GLuint fireProg, airProg_Pressure, airProg_Velocity, airProg_Cracker, lensProg;
diff --git a/src/simulation/Air.cpp b/src/simulation/Air.cpp
index 6d7b5dd29..2dfcae090 100644
--- a/src/simulation/Air.cpp
+++ b/src/simulation/Air.cpp
@@ -1,4 +1,5 @@
 #include <cmath>
+#include <algorithm>
 #include "Config.h"
 #include "Air.h"
 //#include <powder.h>
@@ -295,6 +296,19 @@ void Air::update_air(void)
 		memcpy(pv, opv, sizeof(pv));
 	}
 }
+
+void Air::Invert()
+{
+	int nx, ny;
+	for (nx = 0; nx<XRES/CELL; nx++)
+		for (ny = 0; ny<YRES/CELL; ny++)
+		{
+			pv[ny][nx] = -pv[ny][nx];
+			vx[ny][nx] = -vx[ny][nx];
+			vy[ny][nx] = -vy[ny][nx];
+		}
+}
+
 Air::Air():
 	airMode(0)
 {
diff --git a/src/simulation/Air.h b/src/simulation/Air.h
index 0232b8635..8fa6f6edb 100644
--- a/src/simulation/Air.h
+++ b/src/simulation/Air.h
@@ -29,6 +29,7 @@ public:
 	void update_airh(void);
 	void update_air(void);
 	void Clear();
+	void Invert();
 	Air();
 };