Adding a GetDrawLayer function

Author: Wires77

engine/render.h

@@ -69,6 +69,7 @@ class r_IRenderer {
 	virtual void	SetClearColor(const col4_t col) = 0;
 	virtual void	SetDrawLayer(int layer, int subLayer = 0) = 0;
 	virtual void	SetDrawSubLayer(int subLayer) = 0;
+	virtual int		GetDrawLayer() = 0;
 	virtual void	SetViewport(int x = 0, int y = 0, int width = 0, int height = 0) = 0;
 	virtual void	DrawColor(const col4_t col = NULL) = 0;
 	virtual void	DrawColor(dword col) = 0;

engine/render/r_main.cpp

@@ -600,6 +600,11 @@ void r_renderer_c::SetDrawSubLayer(int subLayer)
 	SetDrawLayer(curLayer->layer, subLayer);
 }
 
+int r_renderer_c::GetDrawLayer()
+{
+	return curLayer->subLayer;
+}
+
 void r_renderer_c::SetViewport(int x, int y, int width, int height)
 {
 	if (height == 0) {

engine/render/r_main.h

@@ -67,6 +67,7 @@ class r_renderer_c: public r_IRenderer, public conCmdHandler_c {
 	void	SetClearColor(const col4_t col);
 	void	SetDrawLayer(int layer, int subLayer = 0);
 	void	SetDrawSubLayer(int subLayer);
+	int		GetDrawLayer();
 	void	SetViewport(int x = 0, int y = 0, int width = 0, int height = 0);
 	void	DrawColor(const col4_t col = NULL);
 	void	DrawColor(dword col);

engine/tiff.lib

@@ -33,6 +33,7 @@
 ** width, height = GetScreenSize()
 ** SetClearColor(red, green, blue[, alpha])
 ** SetDrawLayer({layer|nil}[, subLayer)
+** GetDrawLayer()
 ** SetViewport([x, y, width, height])
 ** SetDrawColor(red, green, blue[, alpha]) / SetDrawColor("<escapeStr>")
 ** DrawImage({imgHandle|nil}, left, top, width, height[, tcLeft, tcTop, tcRight, tcBottom])
@@ -308,6 +309,13 @@ static int l_SetDrawLayer(lua_State* L)
 	return 0;
 }
 
+static int l_GetDrawLayer(lua_State* L)
+{
+	ui_main_c* ui = GetUIPtr(L);
+	lua_pushinteger(L, ui->renderer->GetDrawLayer());
+	return 1;
+}
+
 static int l_SetViewport(lua_State* L)
 {
 	ui_main_c* ui = GetUIPtr(L);
@@ -1175,6 +1183,7 @@ int ui_main_c::InitAPI(lua_State* L)
 	ADDFUNC(GetScreenSize);
 	ADDFUNC(SetClearColor);
 	ADDFUNC(SetDrawLayer);
+	ADDFUNC(GetDrawLayer);
 	ADDFUNC(SetViewport);
 	ADDFUNC(SetDrawColor);
 	ADDFUNC(DrawImage);