Added various missing functions.

src/core.c

@@ -1220,19 +1220,6 @@ int lcoreSetTargetFPS( lua_State* L ) {
 	return 0;
 }
 
-/*
-> FPS = RL.GetFPS()
-
-Get current FPS
-
-- Success return int
-*/
-int lcoreGetFPS( lua_State* L ) {
-	lua_pushinteger( L, GetFPS() );
-
-	return 1;
-}
-
 /*
 > delta = RL.GetFrameTime()
 
@@ -1259,6 +1246,58 @@ int lcoreGetTime( lua_State* L ) {
 	return 1;
 }
 
+/*
+> FPS = RL.GetFPS()
+
+Get current FPS
+
+- Success return int
+*/
+int lcoreGetFPS( lua_State* L ) {
+	lua_pushinteger( L, GetFPS() );
+
+	return 1;
+}
+
+/*
+## Core - Custom frame control functions
+*/
+
+/*
+> RL.SwapScreenBuffer()
+
+Swap back buffer with front buffer (screen drawing)
+*/
+int lcoreSwapScreenBuffer( lua_State* L ) {
+	SwapScreenBuffer();
+
+	return 0;
+}
+
+/*
+> RL.PollInputEvents()
+
+Register all input events
+*/
+int lcorePollInputEvents( lua_State* L ) {
+	PollInputEvents();
+
+	return 0;
+}
+
+/*
+> RL.WaitTime( number seconds )
+
+Wait for some time (halt program execution)
+*/
+int lcoreWaitTime( lua_State* L ) {
+	double seconds = luaL_checknumber( L, 1 );
+
+	WaitTime( seconds );
+
+	return 0;
+}
+
 /*
 ## Core - Random values generation functions
 */
@@ -1907,6 +1946,21 @@ int lcoreIsKeyPressed( lua_State* L ) {
 	return 1;
 }
 
+/*
+> pressed = RL.IsKeyPressedRepeat( int key )
+
+Check if a key has been pressed again (Only PLATFORM_DESKTOP)
+
+- Success return bool
+*/
+int lcoreIsKeyPressedRepeat( lua_State* L ) {
+	int key = luaL_checkinteger( L, 1 );
+
+	lua_pushboolean( L, IsKeyPressedRepeat( key ) );
+
+	return 1;
+}
+
 /*
 > pressed = RL.IsKeyDown( int key )
 
@@ -2073,6 +2127,35 @@ int lcoreIsGamepadButtonReleased( lua_State* L ) {
 	return 1;
 }
 
+/*
+> notPressed = RL.IsGamepadButtonUp( int gamepad, int button )
+
+Check if a gamepad button is NOT being pressed
+
+- Success return bool
+*/
+int lcoreIsGamepadButtonUp( lua_State* L ) {
+	int gamepad = luaL_checkinteger( L, 1 );
+	int button = luaL_checkinteger( L, 2 );
+
+	lua_pushboolean( L, IsGamepadButtonUp( gamepad, button ) );
+
+	return 1;
+}
+
+/*
+> button = RL.GetGamepadButtonPressed()
+
+Get the last gamepad button pressed
+
+- Success return int
+*/
+int lcoreGetGamepadButtonPressed( lua_State* L ) {
+	lua_pushinteger( L, GetGamepadButtonPressed() );
+
+	return 1;
+}
+
 /*
 > count = RL.GetGamepadAxisCount( int gamepad )
 
@@ -2251,7 +2334,7 @@ int lcoreSetMouseScale( lua_State* L ) {
 /*
 > movement = RL.GetMouseWheelMove()
 
-Returns mouse wheel movement Y
+Get mouse wheel movement for X or Y, whichever is larger
 
 - Success return float
 */
@@ -2261,6 +2344,19 @@ int lcoreGetMouseWheelMove( lua_State* L ) {
 	return 1;
 }
 
+/*
+> movement = RL.GetMouseWheelMoveV()
+
+Get mouse wheel movement for both X and Y
+
+- Success return Vector2
+*/
+int lcoreGetMouseWheelMoveV( lua_State* L ) {
+	uluaPushVector2( L, GetMouseWheelMoveV() );
+
+	return 1;
+}
+
 /*
 > RL.SetMouseCursor( int cursor )