1 files changed, 162 insertions, 0 deletions
diff --git a/src/extras/frontendoption.h b/src/extras/frontendoption.h
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+++ b/src/extras/frontendoption.h
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+#pragma once
+#include "common.h"
+
+#ifdef CUSTOM_FRONTEND_OPTIONS
+#include "Frontend.h"
+
+// Warning:
+//		All of the code relies on that you won't use more then NUM_MENUROWS(18) options on one page.
+//		Also congrats if you can make 18 options visible at once.
+
+// About texts:
+//		All text parameters accept wchar(including hardcoded wchar* and TheText.Get)
+//		except FrontendScreenAdd(it's char[8] by the design of Frontend).
+//		All texts reload if custom options reloaded too, which includes language changes and via live reload feature in debug menu!
+
+// Execute direction:
+//		All of the calls below eventually manipulate the aScreens array, so keep in mind to add/replace options in order,
+//		i.e. don't set cursor to 8 first and then 3.
+
+// Live reload:
+//		You can add/change/undo the new options in-game if you use VS. Change what you want, build the changed bits via "Edit and Continue",
+//		and hit the "Reload custom frontend options" from debug menu. Or call CustomFrontendOptionsPopulate() from somewhere else.
+
+
+// -- Option types
+//
+// Static/select:	You allocate the variable, pass it to function and game sets it from user input among the strings given to function,
+//					then you can handle ChangeFunc(only called on enter if onlyApplyOnEnter set, or set immediately)
+//					and ReturnPrevPageFunc optionally. You can store the option in gta3.set if you pass true to corresponding parameter.
+//
+// Dynamic:			Passing variable to function is only needed if you want to store it, otherwise you should do
+//					all the operations with ButtonPressFunc, this includes allocating the variable.
+//					Left-side text is passed while creating and static, but ofc right-side text is dynamic -
+//					you should return it in DrawFunc, which is called on every draw. ReturnPrevPageFunc is also here if needed.
+//
+// Redirect:		Redirection to another screen. selectedOption parameter is the highlighted option user will see after the redirection.
+//
+// Built-in action:	As the name suggests, any action that game has built-in. But as an extra you can set the option text,
+//					and can be informed on button press/focus loss via buttonPressFunc. ReturnPrevPageFunc is also here.
+
+#define FEOPTION_SELECT 0
+#define FEOPTION_DYNAMIC 1
+#define FEOPTION_REDIRECT 2
+#define FEOPTION_GOBACK 3
+#define FEOPTION_BUILTIN_ACTION 4
+
+// -- Returned via ButtonPressFunc() action param.
+#define FEOPTION_ACTION_LEFT 0
+#define FEOPTION_ACTION_RIGHT 1
+#define FEOPTION_ACTION_SELECT 2
+#define FEOPTION_ACTION_FOCUSLOSS 3
+
+// -- Passed via FrontendScreenAdd()
+#define FESCREEN_CENTER 0
+#define FESCREEN_LEFT_ALIGN 1
+#define FESCREEN_RIGHT_ALIGN 2
+
+// -- Callbacks
+
+// pretty much in everything I guess, and optional in all of them
+typedef void (*ReturnPrevPageFunc)();
+
+// for static options
+typedef void (*ChangeFunc)(int8 displayedValue); // called before updating the value.
+												// only called on enter if onlyApplyOnEnter set, otherwise called on every value change
+
+// for dynamic options
+typedef wchar* (*DrawFunc)(bool* disabled, bool userHovering); // you must return a pointer for right text.
+															// you can also set *disabled if you want to gray it out.
+typedef void (*ButtonPressFunc)(int8 action); // see FEOPTION_ACTIONs above
+
+struct FrontendScreen
+{
+	int id;
+	char name[8];
+	eMenuSprites sprite;
+	int prevPage;
+	int columnWidth;
+	int headerHeight;
+	int lineHeight;
+	int8 font;
+	float fontScaleX;
+	float fontScaleY;
+	int8 alignment;
+	bool showLeftRightHelper;
+	ReturnPrevPageFunc returnPrevPageFunc;
+};
+
+struct FrontendOption
+{
+	int8 type;
+	int8 screenOptionOrder;
+	int32 screen;
+	wchar leftText[64];
+	ReturnPrevPageFunc returnPrevPageFunc;
+	int8* value;
+	int8 displayedValue; // only if onlyApplyOnEnter enabled for now
+	bool save;
+	int32 ogOptionId; // for replacements, see overwrite parameter of SetCursor
+	
+	union {
+		// Only for dynamic / built-in action
+		struct {
+			DrawFunc drawFunc;
+			ButtonPressFunc buttonPressFunc;
+		};
+
+		// Only for static/select
+		struct {
+			const wchar** rightTexts;
+			int8 numRightTexts;
+			bool onlyApplyOnEnter;
+			ChangeFunc changeFunc;
+			int8 lastSavedValue; // only if onlyApplyOnEnter enabled
+		};
+
+		// Only for redirect
+		struct {
+			int to;
+			int8 option;
+			bool fadeIn;
+		};
+	};
+};
+
+// -- Internal things
+void RemoveCustomFrontendOptions();
+void CustomFrontendOptionsPopulate();
+
+extern int lastOgScreen; // for reloading
+
+extern int numCustomFrontendOptions;
+extern FrontendOption* customFrontendOptions;
+
+extern int numCustomFrontendScreens;
+extern FrontendScreen* customFrontendScreens;
+
+// -- To be used in ButtonPressFunc / ChangeFunc(this one would be weird):
+void ChangeScreen(int screen, int option = 0, bool fadeIn = true);
+void GoBack(bool fadeIn = true);
+
+uint8 GetNumberOfMenuOptions(int screen);
+
+// -- Placing the cursor to append/overwrite option
+//
+// Done via FrontendOptionSetCursor(screen, position, overwrite = false), parameters explained below:
+// Screen:			as the name suggests. Also accepts the screen IDs returned from FrontendScreenAdd.
+// Option:			if positive, next AddOption call will put the option to there and progress the cursor.
+//					if negative, cursor will be placed on bottom-(pos+1), so -1 means the very bottom, -2 means before the back button etc.
+// Overwrite:		Use to overwrite the options, not appending a new one. AddOption calls will still progress the cursor.
+
+void FrontendOptionSetCursor(int screen, int8 option, bool overwrite = false);
+
+// var is optional in AddDynamic, you can enable save parameter if you pass one, otherwise pass nil/0
+void FrontendOptionAddBuiltinAction(const wchar* leftText, int action, ButtonPressFunc buttonPressFunc, ReturnPrevPageFunc returnPrevPageFunc);
+void FrontendOptionAddSelect(const wchar* leftText, const wchar** rightTexts, int8 numRightTexts, int8 *var, bool onlyApplyOnEnter, ChangeFunc changeFunc, ReturnPrevPageFunc returnPrevPageFunc, bool save = false);
+void FrontendOptionAddDynamic(const wchar* leftText, DrawFunc rightTextDrawFunc, int8 *var, ButtonPressFunc buttonPressFunc, ReturnPrevPageFunc returnPrevPageFunc, bool save = false);
+void FrontendOptionAddRedirect(const wchar* text, int to, int8 selectedOption = 0, bool fadeIn = true);
+void FrontendOptionAddBackButton(const wchar* text, bool fadeIn = true);
+
+uint8 FrontendScreenAdd(char* gxtKey, eMenuSprites sprite, int prevPage, int columnWidth, int headerHeight, int lineHeight, int8 font, float fontScaleX, float fontScaleY, int8 alignment, bool showLeftRightHelper, ReturnPrevPageFunc returnPrevPageFunc = nil);
+#endif
+\ No newline at end of file