Fix some uninitialized variables, add back sandcolor changing

src/simulation/Simulation.cpp

@@ -3020,9 +3020,9 @@ int Simulation::create_part(int p, int x, int y, int tv)
 	{
 		int colr, colg, colb, randa;
 		randa = (rand()%30)-15;
-		colr = (PIXR(elements[t].Colour)+sandcolour_r+(rand()%20)-10+randa);
+		colr = (PIXR(elements[t].Colour)+sandcolour+(rand()%20)-10+randa);
-		colg = (PIXG(elements[t].Colour)+sandcolour_g+(rand()%20)-10+randa);
+		colg = (PIXG(elements[t].Colour)+sandcolour+(rand()%20)-10+randa);
-		colb = (PIXB(elements[t].Colour)+sandcolour_b+(rand()%20)-10+randa);
+		colb = (PIXB(elements[t].Colour)+sandcolour+(rand()%20)-10+randa);
 		colr = colr>255 ? 255 : (colr<0 ? 0 : colr);
 		colg = colg>255 ? 255 : (colg<0 ? 0 : colg);
 		colb = colb>255 ? 255 : (colb<0 ? 0 : colb);
@@ -4483,6 +4483,8 @@ void Simulation::update_particles()//doesn't update the particles themselves, bu
 		if(emp_decor < 0)
 			emp_decor = 0;
 	}
+	sandcolour = (int)(20.0f*sin((float)sandcolour_frame*(M_PI/180.0f)));
+	sandcolour_frame = (sandcolour_frame++)%360;
 
 	memset(pmap, 0, sizeof(pmap));
 	memset(pmap_count, 0, sizeof(pmap_count));
@@ -4586,7 +4588,10 @@ Simulation::~Simulation()
 }
 
 Simulation::Simulation():
-	sys_pause(0)
+	sys_pause(0),
+	framerender(false),
+	pretty_powder(0),
+	sandcolour_frame(0)
 {
     
     int tportal_rx[] = {-1, 0, 1, 1, 1, 0,-1,-1};

src/simulation/Simulation.h

@@ -115,10 +115,8 @@ public:
 	int sys_pause;
 	int framerender;
 	int pretty_powder;
-	//
+	int sandcolour;
-	int sandcolour_r;
+	int sandcolour_frame;
-	int sandcolour_g;
-	int sandcolour_b; //TODO: Make a single variable
 
 	int Load(GameSave * save);
 	int Load(int x, int y, GameSave * save);

src/virtualmachine/Syscalls.cpp

@@ -14,31 +14,37 @@ namespace vm
 	TRAPDEF(sin)
 	{
 		Push<float4_t>(sin(ARG(0).float4));
+		return 0;
 	}
 
 	TRAPDEF(cos)
 	{
 		Push<float4_t>(cos(ARG(0).float4));
+		return 0;
 	}
 
 	TRAPDEF(atan2)
 	{
 		Push<float4_t>(atan2(ARG(0).float4, ARG(1).float4));
+		return 0;
 	}
 
 	TRAPDEF(sqrt)
 	{
 		Push<float4_t>(sqrt(ARG(0).float4));
+		return 0;
 	}
 
 	TRAPDEF(floor)
 	{
 		Push<float4_t>(floor(ARG(0).float4));
+		return 0;
 	}
 
 	TRAPDEF(ceil)
 	{
 		Push<float4_t>(ceil(ARG(0).float4));
+		return 0;
 	}
 
 
@@ -47,6 +53,7 @@ namespace vm
 		char *text;
 		text = (char*)(ram) + ARG(0).int4;
 		printf("%s", text);
+		return 0;
 	}
 
 
@@ -56,31 +63,37 @@ namespace vm
 		msg = (char*)(ram) + ARG(0).int4;
 		printf("%s", msg);
 		End();
+		return 0;
 	}
 
 
 	TRAPDEF(partCreate)
 	{
 		Push<int4_t>(sim->create_part(ARG(0).int4, ARG(1).int4, ARG(2).int4, ARG(3).int4));
+		return 0;
 	}
 
 	TRAPDEF(partChangeType)
 	{
 		sim->part_change_type(ARG(0).int4, ARG(1).int4, ARG(2).int4, ARG(3).int4);
+		return 0;
 	}
 
 	TRAPDEF(pmapData)
 	{
 		Push<int4_t>(sim->pmap[ARG(1).int4][ARG(0).int4]);
+		return 0;
 	}
 
 	TRAPDEF(deletePart)
 	{
 		sim->delete_part(ARG(0).int4, ARG(1).int4, ARG(2).int4);
+		return 0;
 	}
 
 	TRAPDEF(killPart)
 	{
 		sim->kill_part(ARG(0).int4);
+		return 0;
 	}
 }