From 7cc79d95c1670bf042cce221ecc66a2e761ccbb2 Mon Sep 17 00:00:00 2001
From: Jackson Davis <jackson@jcdav.is>
Date: Tue, 2 Sep 2014 17:56:30 +0200
Subject: [PATCH] First pass at 6CB70A

---
 src/window_footpath.c | 47 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 45 insertions(+), 2 deletions(-)

diff --git a/src/window_footpath.c b/src/window_footpath.c
index 01e4db3cb5..626049e2eb 100644
--- a/src/window_footpath.c
+++ b/src/window_footpath.c
@@ -120,6 +120,7 @@ static void window_footpath_tooldrag();
 static void window_footpath_toolup();
 static void window_footpath_invalidate();
 static void window_footpath_paint();
+static void sub_6CB70A(uint8 al);
 
 static void* window_footpath_events[] = {
 	window_footpath_close,
@@ -226,7 +227,7 @@ static void window_footpath_close()
 	window_get_register(w);
 
 	RCT2_CALLPROC_EBPSAFE(0x006A7831);
-	RCT2_CALLPROC_X(0x006CB70A, 0, 0, 0, 0, 0, 0, 0);
+	sub_6CB70A(0); //RCT2_CALLPROC_X(0x006CB70A, 0, 0, 0, 0, 0, 0, 0);
 	RCT2_CALLPROC_EBPSAFE(0x0068AB1B);
 	RCT2_GLOBAL(RCT2_ADDRESS_MAP_SELECTION_FLAGS, uint16) &= ~2;
 	window_invalidate_by_id(WC_TOP_TOOLBAR, 0);
@@ -677,7 +678,7 @@ static int window_footpath_set_provisional_path(int type, int x, int y, int z, i
 		eax = 3;
 		if (RCT2_GLOBAL(0x00F3EFA4, uint8) & 2)
 			eax = 1;
-		RCT2_CALLPROC_X(0x006CB70A, eax, 0, 0, 0, 0, 0, 0);
+		sub_6CB70A((uint8)eax); //RCT2_CALLPROC_X(0x006CB70A, eax, 0, 0, 0, 0, 0, 0);
 	}
 
 	return cost;
@@ -827,3 +828,45 @@ loc_6A79B0:
 	RCT2_CALLPROC_EBPSAFE(0x006A855C);
 }
 
+static void sub_6CB70A(uint8 al)
+{
+	rct_window* window = window_get_main();
+
+	if(window != NULL) {
+		rct_viewport* edi = window->viewport;
+		uint32 invalidate = 0;
+
+		switch(al) {
+			case 0: { //Set all these flags to 0, and invalidate if any were active
+				uint16 mask = VIEWPORT_FLAG_UNDERGROUND_INSIDE | VIEWPORT_FLAG_SEETHROUGH_RIDES |
+					VIEWPORT_FLAG_SEETHROUGH_SCENERY | VIEWPORT_FLAG_INVISIBLE_SUPPORTS |
+					VIEWPORT_FLAG_LAND_HEIGHTS | VIEWPORT_FLAG_TRACK_HEIGHTS |
+					VIEWPORT_FLAG_PATH_HEIGHTS | VIEWPORT_FLAG_INVISIBLE_PEEPS |
+					VIEWPORT_FLAG_HIDE_BASE | VIEWPORT_FLAG_HIDE_VERTICAL;
+
+				invalidate += edi->flags & mask;
+				edi->flags &= ~mask;
+				break;
+			}
+			case 1: //6CB79D
+			case 4: //6CB7C4
+				//Set underground on, invalidate if it was off
+				invalidate += !(edi->flags & VIEWPORT_FLAG_UNDERGROUND_INSIDE);
+				edi->flags |= VIEWPORT_FLAG_UNDERGROUND_INSIDE;
+				break;
+			case 2: //6CB7EB
+				//Set track heights on, invalidate if off
+				invalidate += !(edi->flags & VIEWPORT_FLAG_TRACK_HEIGHTS);
+				edi->flags |= VIEWPORT_FLAG_TRACK_HEIGHTS;
+				break;
+			case 3: //6CB7B1
+			case 5: //6CB7D8
+				//Set underground off, invalidate if it was on
+				invalidate += edi->flags & VIEWPORT_FLAG_UNDERGROUND_INSIDE;
+				edi->flags &= ~((uint16)VIEWPORT_FLAG_UNDERGROUND_INSIDE);
+				break;
+		}
+		if (invalidate != 0)
+			window_invalidate(window);
+	}
+}