define M_PI in tpt-math.h

src/Config.h

@@ -97,9 +97,6 @@
 //Number of unique thumbnails to have in cache at one time
 #define THUMB_CACHE_SIZE 256
 
-#ifndef M_PI
-#define M_PI 3.14159265f
-#endif
 #ifndef M_GRAV
 #define M_GRAV 6.67300e-1
 #endif

src/common/tpt-math.h

@@ -1,6 +1,13 @@
 #ifndef TPT_MATH_
 #define TPT_MATH_
 
+#ifndef M_PI
+#define M_PI 3.14159265f
+#endif
+#ifndef M_PI_2
+#define M_PI_2 1.57079633f
+#endif
+
 namespace tpt
 {
 	float sin(float angle);

src/graphics/Renderer.cpp

@@ -7,6 +7,7 @@
 #include "Misc.h"
 #include "Renderer.h"
 #include "Graphics.h"
+#include "common/tpt-math.h"
 #include "common/tpt-minmax.h"
 #include "gui/game/RenderPreset.h"
 #include "simulation/Elements.h"

src/simulation/Element.h

@@ -3,11 +3,12 @@
 // This header should be included by all files in src/elements/
 
 #include <cmath>
-#include "Simulation.h"
+#include "ElementGraphics.h"
-#include "graphics/Renderer.h"
 #include "Gravity.h"
 #include "Misc.h"
-#include "ElementGraphics.h"
+#include "Simulation.h"
+#include "common/tpt-math.h"
+#include "graphics/Renderer.h"
 
 #define IPL -257.0f
 #define IPH 257.0f

src/simulation/Simulation.cpp

@@ -19,6 +19,7 @@
 #include "ToolClasses.h"
 #include "client/GameSave.h"
 #include "common/tpt-compat.h"
+#include "common/tpt-math.h"
 #include "common/tpt-minmax.h"
 #include "gui/game/Brush.h"