1 files changed, 167 insertions, 0 deletions

diff --git a/src/extras/frontendoption.cpp b/src/extras/frontendoption.cpp
new file mode 100644
index 00000000..1f154250
--- /dev/null
+++ b/src/extras/frontendoption.cpp
@@ -0,0 +1,167 @@
+#include "common.h"
+
+#ifdef CUSTOM_FRONTEND_OPTIONS
+#include "Frontend.h"
+#include "Text.h"
+
+int lastOgScreen = MENUPAGES; // means no new pages
+
+int numCustomFrontendOptions = 0;
+int numCustomFrontendScreens = 0;
+
+int optionCursor = -2;
+int currentMenu;
+bool optionOverwrite = false;
+
+void GoBack()
+{
+	FrontEndMenuManager.SwitchToNewScreen(-1);
+}
+
+uint8
+GetNumberOfMenuOptions(int screen)
+{
+	uint8 Rows = 0;
+	for (int i = 0; i < NUM_MENUROWS; i++) {
+		if (aScreens[screen].m_aEntries[i].m_Action == MENUACTION_NOTHING)
+			break;
+
+		++Rows;
+	}
+	return Rows;
+}
+
+uint8
+GetLastMenuScreen()
+{
+	int8 page = -1;
+	for (int i = 0; i < MENUPAGES; i++) {
+		if (strcmp(aScreens[i].m_ScreenName, "") == 0 && aScreens[i].m_PreviousPage == MENUPAGE_NONE)
+			break;
+
+		++page;
+	}
+	return page;
+}
+
+int8 RegisterNewScreen(const char *name, int prevPage, ReturnPrevPageFunc returnPrevPageFunc)
+{
+	if (lastOgScreen == MENUPAGES)
+		lastOgScreen = GetLastMenuScreen();
+
+	numCustomFrontendScreens++;
+	int id = lastOgScreen + numCustomFrontendScreens;
+	assert(id < MENUPAGES && "No room for new custom frontend screens! Increase MENUPAGES");
+	strncpy(aScreens[id].m_ScreenName, name, 8);
+	aScreens[id].m_PreviousPage = prevPage;
+	aScreens[id].returnPrevPageFunc = returnPrevPageFunc;
+	return id;
+}
+
+int8 RegisterNewOption()
+{
+	numCustomFrontendOptions++;
+	uint8 numOptions = GetNumberOfMenuOptions(currentMenu);
+	uint8 curIdx;
+	if (optionCursor < 0) {
+		optionCursor = curIdx = numOptions + optionCursor + 1;
+	} else 
+		curIdx = optionCursor;
+
+	if (!optionOverwrite) {
+		if (aScreens[currentMenu].m_aEntries[curIdx].m_Action != MENUACTION_NOTHING) {
+			for (int i = numOptions - 1; i >= curIdx; i--) {
+				memcpy(&aScreens[currentMenu].m_aEntries[i + 1], &aScreens[currentMenu].m_aEntries[i], sizeof(CMenuScreenCustom::CMenuEntry));
+			}
+		}
+	}
+	optionCursor++;
+	return curIdx;
+}
+
+void FrontendOptionSetCursor(int screen, int8 option, bool overwrite)
+{
+	currentMenu = screen;
+	optionCursor = option;
+	optionOverwrite = overwrite;
+}
+
+void FrontendOptionAddBuiltinAction(const char* gxtKey, uint16 x, uint16 y, uint8 align, int action, int targetMenu, int saveSlot) {
+	int8 screenOptionOrder = RegisterNewOption();
+
+	CMenuScreenCustom::CMenuEntry &option = aScreens[currentMenu].m_aEntries[screenOptionOrder];
+
+	// We can't use custom text on those :shrug:
+	switch (action) {
+		case MENUACTION_SCREENRES:
+			strcpy(option.m_EntryName, "FED_RES");
+			break;
+		case MENUACTION_AUDIOHW:
+			strcpy(option.m_EntryName, "FEA_3DH");
+			break;
+		default:
+			strncpy(option.m_EntryName, gxtKey, 8);
+			break;
+	}
+	option.m_X = x;
+	option.m_Y = y;
+	option.m_Align = align;
+	option.m_Action = action;
+	option.m_SaveSlot = saveSlot;
+	option.m_TargetMenu = targetMenu;
+}
+
+void FrontendOptionAddSelect(const char* gxtKey, uint16 x, uint16 y, uint8 align, const char** rightTexts, int8 numRightTexts, int8 *var, bool onlyApplyOnEnter, ChangeFunc changeFunc, const char* saveName)
+{	
+	int8 screenOptionOrder = RegisterNewOption();
+
+	CMenuScreenCustom::CMenuEntry &option = aScreens[currentMenu].m_aEntries[screenOptionOrder];
+	option.m_Action = MENUACTION_CFO_SELECT;
+	option.m_X = x;
+	option.m_Y = y;
+	option.m_Align = align;
+	strncpy(option.m_EntryName, gxtKey, 8);
+	option.m_CFOSelect = new CCFOSelect();
+	option.m_CFOSelect->rightTexts = (char**)malloc(numRightTexts * sizeof(char*));
+	memcpy(option.m_CFOSelect->rightTexts, rightTexts, numRightTexts * sizeof(char*));
+	option.m_CFOSelect->numRightTexts = numRightTexts;
+	option.m_CFOSelect->value = var;
+	if (var) {
+		option.m_CFOSelect->displayedValue = *var;
+		option.m_CFOSelect->lastSavedValue = *var;
+	}
+	option.m_CFOSelect->save = saveName;
+	option.m_CFOSelect->onlyApplyOnEnter = onlyApplyOnEnter;
+	option.m_CFOSelect->changeFunc = changeFunc;
+}
+
+void FrontendOptionAddDynamic(const char* gxtKey, uint16 x, uint16 y, uint8 align, DrawFunc drawFunc, int8 *var, ButtonPressFunc buttonPressFunc, const char* saveName)
+{
+	int8 screenOptionOrder = RegisterNewOption();
+
+	CMenuScreenCustom::CMenuEntry &option = aScreens[currentMenu].m_aEntries[screenOptionOrder];
+	option.m_Action = MENUACTION_CFO_DYNAMIC;
+	option.m_X = x;
+	option.m_Y = y;
+	option.m_Align = align;
+	strncpy(option.m_EntryName, gxtKey, 8);
+	option.m_CFODynamic = new CCFODynamic();
+	option.m_CFODynamic->drawFunc = drawFunc;
+	option.m_CFODynamic->buttonPressFunc = buttonPressFunc;
+	option.m_CFODynamic->value = var;
+	option.m_CFODynamic->save = saveName;
+}
+
+// lineHeight = 0 means game will use MENU_DEFAULT_LINE_HEIGHT
+uint8 FrontendScreenAdd(const char* gxtKey, int prevPage, int lineHeight, bool showLeftRightHelper, ReturnPrevPageFunc returnPrevPageFunc) {
+
+	uint8 screenOrder = RegisterNewScreen(gxtKey, prevPage, returnPrevPageFunc);
+
+	CCustomScreenLayout *screen = new CCustomScreenLayout();
+	aScreens[screenOrder].layout = screen;
+	screen->lineHeight = lineHeight;
+	screen->showLeftRightHelper = showLeftRightHelper;
+
+	return screenOrder;
+}
+#endif