diff --git a/src/game/bondgrab.c b/src/game/bondgrab.c
index 6059d6ab0..e143895e4 100644
--- a/src/game/bondgrab.c
+++ b/src/game/bondgrab.c
@@ -105,11 +105,11 @@ void bgrabInit(void)
 		obj->hidden |= OBJHFLAG_GRABBED;
 
 		if (obj->flags3 & OBJFLAG3_02000000) {
-			setthething = func000276c8(obj->geo,
+			setthething = func000276c8(obj->geo3,
 					g_Vars.currentplayer->prop->pos.x,
 					g_Vars.currentplayer->prop->pos.z, 45, 0, 0);
 		} else {
-			setthething = func000274e0(obj->geo,
+			setthething = func000274e0(obj->geo2,
 					g_Vars.currentplayer->prop->pos.x,
 					g_Vars.currentplayer->prop->pos.z, 45, 0, 0);
 		}
diff --git a/src/game/chr/chr.c b/src/game/chr/chr.c
index 89f6002c2..8c18e7c79 100644
--- a/src/game/chr/chr.c
+++ b/src/game/chr/chr.c
@@ -9798,7 +9798,7 @@ struct prop *chrGetTargetProp(struct chrdata *chr)
 	return ret;
 }
 
-bool chrUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2)
+bool chrUpdateGeometry(struct prop *prop, struct tiletype3 **arg1, struct tiletype3 **arg2)
 {
 	struct chrdata *chr = prop->chr;
 
@@ -9806,12 +9806,12 @@ bool chrUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2)
 			chr->actiontype != ACT_DRUGGEDKO &&
 			(chr->chrflags & (CHRCFLAG_00010000 | CHRCFLAG_HIDDEN)) == 0 &&
 			(chr->hidden & CHRHFLAG_00000100) == 0) {
-		chr->geo.type = PROPTYPE_CHR;
+		chr->geo.header.type = TILETYPE_03;
 
 		if (chr->actiontype == ACT_DIE || chr->actiontype == ACT_DRUGGEDDROP) {
-			chr->geo.unk02 = 16;
+			chr->geo.header.flags = TILEFLAG_0010;
 		} else {
-			chr->geo.unk02 = 20;
+			chr->geo.header.flags = TILEFLAG_0004 | TILEFLAG_0010;
 		}
 
 		chr->geo.ymin = chr->manground;
diff --git a/src/game/game_013cf0.c b/src/game/game_013cf0.c
index 83c461fb5..c60089d88 100644
--- a/src/game/game_013cf0.c
+++ b/src/game/game_013cf0.c
@@ -37,19 +37,20 @@ void stageParseTiles(void)
 	struct tile *end = (struct tile *)(g_TileFileData.u8 + g_TileRooms[g_TileNumRooms]);
 
 	while (tile < end) {
-		if (tile->unk00 == 0) {
-			tile->unk06 = mult6(tile->unk06) + 14;
-			tile->unk09 = mult6(tile->unk09) + 14;
-			tile->unk07 = mult6(tile->unk07) + 16;
-			tile->unk0a = mult6(tile->unk0a) + 16;
-			tile->unk08 = mult6(tile->unk08) + 18;
-			tile->unk0b = mult6(tile->unk0b) + 18;
+		if (tile->type == TILETYPE_00) {
+			struct tiletype0 *tile0 = (struct tiletype0 *) tile;
+			tile0->xmin = mult6(tile0->xmin) + 14;
+			tile0->xmax = mult6(tile0->xmax) + 14;
+			tile0->ymin = mult6(tile0->ymin) + 16;
+			tile0->ymax = mult6(tile0->ymax) + 16;
+			tile0->zmin = mult6(tile0->zmin) + 18;
+			tile0->zmax = mult6(tile0->zmax) + 18;
 			tile = (struct tile *)((u8 *)tile + (u32)(tile->numvertices - 0x40) * 6 + 0x18e);
-		} else if (tile->unk00 == 1) {
+		} else if (tile->type == TILETYPE_01) {
 			tile = (struct tile *)((u8 *)tile + (u32)(tile->numvertices - 0x40) * 12 + 0x310);
-		} else if (tile->unk00 == 2) {
+		} else if (tile->type == TILETYPE_02) {
 			tile = (struct tile *)((u8 *)tile + 0x4c);
-		} else if (tile->unk00 == 3) {
+		} else if (tile->type == TILETYPE_03) {
 			tile = (struct tile *)((u8 *)tile + 0x18);
 		}
 	}
diff --git a/src/game/game_0b69d0.c b/src/game/game_0b69d0.c
index 53951efb3..1d81a420d 100644
--- a/src/game/game_0b69d0.c
+++ b/src/game/game_0b69d0.c
@@ -1002,8 +1002,8 @@ void currentPlayerResetToDefault(void)
 	bmoveSetMode(MOVEMODE_WALK);
 
 	g_Vars.currentplayer->bondperimenabled = true;
-	g_Vars.currentplayer->periminfo.type = 3;
-	g_Vars.currentplayer->periminfo.unk02 = 20;
+	g_Vars.currentplayer->periminfo.header.type = TILETYPE_03;
+	g_Vars.currentplayer->periminfo.header.flags = TILEFLAG_0004 | TILEFLAG_0010;
 	g_Vars.currentplayer->periminfo.ymax = 0;
 	g_Vars.currentplayer->periminfo.ymin = 0;
 	g_Vars.currentplayer->periminfo.x = 0;
@@ -9878,7 +9878,7 @@ void func0f0c1e54(struct prop *prop, bool enable)
 	g_Vars.players[playernum]->bondperimenabled = enable;
 }
 
-bool playerUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2)
+bool playerUpdateGeometry(struct prop *prop, struct tiletype3 **arg1, struct tiletype3 **arg2)
 {
 	s32 playernum = propGetPlayerNum(prop);
 
@@ -9906,8 +9906,8 @@ bool playerUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg
 
 void currentPlayerUpdatePerimInfo(void)
 {
-	g_Vars.currentplayer->periminfo.type = 3;
-	g_Vars.currentplayer->periminfo.unk02 = 20;
+	g_Vars.currentplayer->periminfo.header.type = TILETYPE_03;
+	g_Vars.currentplayer->periminfo.header.flags = TILEFLAG_0004 | TILEFLAG_0010;
 
 	g_Vars.currentplayer->periminfo.ymin = g_Vars.currentplayer->vv_manground;
 	g_Vars.currentplayer->periminfo.ymax = g_Vars.currentplayer->vv_manground + g_Vars.currentplayer->vv_headheight;
diff --git a/src/game/prop.c b/src/game/prop.c
index d4373f3b0..22933e1c3 100644
--- a/src/game/prop.c
+++ b/src/game/prop.c
@@ -5444,7 +5444,7 @@ bool propIsOfCdType(struct prop *prop, u32 types)
 	} else if (prop->type == PROPTYPE_OBJ || prop->type == PROPTYPE_WEAPON) {
 		struct defaultobj *obj = prop->obj;
 
-		if (obj->geo == NULL) {
+		if (obj->unkgeo == NULL) {
 			result = false;
 		} else {
 			if ((types & CDTYPE_OBJSWITHOUTFLAG) && (obj->flags & OBJFLAG_04000000)) {
@@ -6197,7 +6197,7 @@ void propGetBbox(struct prop *prop, f32 *width, f32 *ymax, f32 *ymin)
 	}
 }
 
-bool propUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2)
+bool propUpdateGeometry(struct prop *prop, struct tiletype3 **arg1, struct tiletype3 **arg2)
 {
 	bool result = false;
 
diff --git a/src/game/propobj.c b/src/game/propobj.c
index be3755916..f5915b183 100644
--- a/src/game/propobj.c
+++ b/src/game/propobj.c
@@ -4348,9 +4348,9 @@ glabel func0f069b4c
 
 void func0f069c1c(struct defaultobj *obj)
 {
-	if (obj->geo) {
+	if (obj->geo3) {
 		if (obj->hidden2 & OBJH2FLAG_08) {
-			func0f069850(obj, &obj->prop->pos, obj->realrot, obj->geo);
+			func0f069850(obj, &obj->prop->pos, obj->realrot, obj->geo3);
 		}
 
 		func0f069b4c(obj);
@@ -27275,8 +27275,8 @@ s32 objTick(struct prop *prop)
 			struct coord sp116 = {0, 0, 0};
 			f32 sp112;
 			s32 tagnum;
-			struct geo *geos[2];
-			struct geo *sp96;
+			struct tiletype3 *geos[2];
+			struct tiletype3 *sp96;
 			f32 damage;
 
 			if (sp572) {
@@ -27349,7 +27349,7 @@ s32 objTick(struct prop *prop)
 				sp592 = true;
 
 				if (objUpdateGeometry(prop, geos, &sp96)
-						&& geos[0]->type == GEOTYPE_2
+						&& geos[0]->header.type == TILETYPE_02
 						&& func0002e4c4(geos[0], prop->rooms, 4) == 0) {
 					damage = ((obj->maxdamage - obj->damage) + 1) / 250.0f;
 					obj->flags &= ~OBJFLAG_INVINCIBLE;
@@ -37428,15 +37428,15 @@ void propObjGetBbox(struct prop *prop, f32 *width, f32 *ymax, f32 *ymin)
 {
 	struct defaultobj *obj = prop->obj;
 
-	if (obj->geo && obj->hidden2 & OBJH2FLAG_08) {
+	if (obj->unkgeo && obj->hidden2 & OBJH2FLAG_08) {
 		if (obj->flags3 & OBJFLAG3_02000000) {
-			*width = obj->geo->width;
-			*ymin = obj->geo->ymin;
-			*ymax = obj->geo->ymax;
+			*width = obj->unkgeo->width;
+			*ymin = obj->unkgeo->ymin;
+			*ymax = obj->unkgeo->ymax;
 		} else {
 			*width = func0001af80(obj->model);
-			*ymin = obj->geo->ymin;
-			*ymax = obj->geo->ymax;
+			*ymin = obj->unkgeo->ymin;
+			*ymax = obj->unkgeo->ymax;
 		}
 	} else {
 		*width = 1;
@@ -44594,12 +44594,12 @@ void func0f08e0c4(struct doorobj *door)
 	doorActivatePortal(door);
 
 	if (door->doortype == DOORTYPE_8) {
-		struct geo *geo = door->base.geo;
+		struct tiletype3 *geo = door->base.geo3;
 		door->base.flags |= OBJFLAG_CANNOT_ACTIVATE;
 		door->perimfrac = 0;
 
 		if (geo && (door->base.flags & OBJFLAG_00000100)) {
-			geo->unk01 = 0;
+			geo->header.numvertices = 0;
 			door->base.flags &= ~OBJFLAG_00000100;
 		}
 	}
diff --git a/src/include/constants.h b/src/include/constants.h
index 9a49980cd..a044b31c7 100644
--- a/src/include/constants.h
+++ b/src/include/constants.h
@@ -854,8 +854,6 @@
 #define GAILIST_INIT_SEARCH            0x002c // unused
 #define GAILIST_INVINCIBLE_AND_IDLE    0x002d
 
-#define GEOTYPE_2 2
-
 #define GOPOSFLAG_SPEED        0x03 // bits 0x01 and 0x02 combined
 #define GOPOSFLAG_INIT         0x04
 #define GOPOSFLAG_ONPRESETPATH 0x08
@@ -3182,9 +3180,18 @@
 #define TICKMODE_CUTSCENE 6
 #define TICKMODE_AUTOWALK 7
 
+#define TILEFLAG_0004 0x0004
+#define TILEFLAG_0008 0x0008
+#define TILEFLAG_0010 0x0010
 #define TILEFLAG_0020 0x0020
+#define TILEFLAG_0080 0x0080
 #define TILEFLAG_0200 0x0200
 
+#define TILETYPE_00 0x00 // Standard BG tiles
+#define TILETYPE_01 0x01 //
+#define TILETYPE_02 0x02 //
+#define TILETYPE_03 0x03 // Chr geometry
+
 #define TITLEMODE_LEGAL            0
 #define TITLEMODE_CHECKCONTROLLERS 1
 #define TITLEMODE_PDLOGO           2
diff --git a/src/include/game/chr/chr.h b/src/include/game/chr/chr.h
index 441459e8b..ae877effb 100644
--- a/src/include/game/chr/chr.h
+++ b/src/include/game/chr/chr.h
@@ -88,7 +88,7 @@ struct chrdata *chrFindByLiteralId(s32 chrnum);
 struct prop *chrGetEquippedWeaponProp(struct chrdata *chr, s32 hand);
 struct prop *chrGetEquippedWeaponPropWithCheck(struct chrdata *chr, s32 hand);
 struct prop *chrGetTargetProp(struct chrdata *chr);
-bool chrUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2);
+bool chrUpdateGeometry(struct prop *prop, struct tiletype3 **arg1, struct tiletype3 **arg2);
 void propChrGetBbox(struct prop *prop, f32 *width, f32 *ymax, f32 *ymin);
 
 #endif
diff --git a/src/include/game/game_0b69d0.h b/src/include/game/game_0b69d0.h
index 6dc4034b7..28f943ab2 100644
--- a/src/include/game/game_0b69d0.h
+++ b/src/include/game/game_0b69d0.h
@@ -67,7 +67,7 @@ void func0f0c1ba4(struct coord *pos, struct coord *up, struct coord *look, struc
 void func0f0c1bd8(struct coord *pos, struct coord *up, struct coord *look);
 void allPlayersClearMemCamRoom(void);
 void func0f0c1e54(struct prop *prop, bool enable);
-bool playerUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2);
+bool playerUpdateGeometry(struct prop *prop, struct tiletype3 **arg1, struct tiletype3 **arg2);
 void currentPlayerUpdatePerimInfo(void);
 void propPlayerGetBbox(struct prop *prop, f32 *width, f32 *ymax, f32 *ymin);
 f32 currentPlayerGetHealthFrac(void);
diff --git a/src/include/game/prop.h b/src/include/game/prop.h
index 455356b85..8bc6559ab 100644
--- a/src/include/game/prop.h
+++ b/src/include/game/prop.h
@@ -58,6 +58,6 @@ void func0f065e98(struct coord *pos, s16 *rooms, struct coord *pos2, s16 *rooms2
 void roomGetProps(s16 *room, s16 *propnums, u32 size);
 u32 func0f066054(void);
 void propGetBbox(struct prop *prop, f32 *width, f32 *ymax, f32 *ymin);
-bool propUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2);
+bool propUpdateGeometry(struct prop *prop, struct tiletype3 **arg1, struct tiletype3 **arg2);
 
 #endif
diff --git a/src/include/game/propobj.h b/src/include/game/propobj.h
index 57a62e029..2e80f1eb5 100644
--- a/src/include/game/propobj.h
+++ b/src/include/game/propobj.h
@@ -89,7 +89,7 @@ void func0f069144(struct prop *prop, u8 *nextcol, u16 floorcol);
 void func0f069630(struct prop *prop, u8 *nextcol, u16 floorcol);
 void func0f069710(u8 *shadecol, u8 *nextcol);
 void func0f069750(s32 *arg0, s32 arg1, f32 *arg2);
-void func0f069850(struct defaultobj *obj, struct coord *pos, f32 *realrot, struct geo *geo);
+void func0f069850(struct defaultobj *obj, struct coord *pos, f32 *realrot, struct tiletype3 *geo);
 void func0f069b4c(struct defaultobj *obj);
 void func0f069c1c(struct defaultobj *obj);
 void func0f069c70(struct defaultobj *obj, bool arg1, bool arg2);
@@ -243,7 +243,7 @@ bool func0f0869cc(struct prop *prop);
 bool currentPlayerTryMountHoverbike(struct prop *prop);
 bool propobjInteract(struct prop *prop);
 void propObjSetOrUnsetHiddenFlag00400000(struct prop *prop, bool enable);
-bool objUpdateGeometry(struct prop *prop, struct geo **arg1, struct geo **arg2);
+bool objUpdateGeometry(struct prop *prop, struct tiletype3 **arg1, struct tiletype3 **arg2);
 void propObjGetBbox(struct prop *prop, f32 *width, f32 *ymax, f32 *ymin);
 void ammotypeGetPickedUpText(char *dst);
 void ammotypeGetDeterminer(char *dst, s32 ammotype, s32 qty);
diff --git a/src/include/lib/lib_233c0.h b/src/include/lib/lib_233c0.h
index c307587ce..1646459fa 100644
--- a/src/include/lib/lib_233c0.h
+++ b/src/include/lib/lib_233c0.h
@@ -60,14 +60,14 @@ u32 func000266a4(void);
 void platformGetRidingProps(struct prop *platform, s16 *propnums, u32 len);
 u32 func00026a04(void);
 u32 func00026e7c(void);
-u32 func0002709c(void);
-u32 func000272f8(void);
-s32 func000274e0(struct geo *geo, f32 x, f32 z, f32 angle, s32 arg4, s32 arg5);
-s32 func000276c8(struct geo *geo, f32 x, f32 z, f32 angle, s32 arg4, s32 arg5);
-void func00027738(struct coord *pos, f32 width, void *arg2, void *arg3, u32 arg4, u32 arg5, f32 arg6, f32 arg7, struct prop *prop, struct collisionthing *arg9, u32 arg10, s32 *arg11, s16 roomnum);
+s32 func0002709c(struct tiletype0 *tile, f32 x, f32 z, f32 width, struct prop *prop, struct collisionthing *thing);
+s32 func000272f8(struct tiletype1 *tile, f32 x, f32 z, f32 width, struct prop *prop, struct collisionthing *thing);
+s32 func000274e0(struct tiletype2 *tile, f32 x, f32 z, f32 width, struct prop *prop, struct collisionthing *thing);
+s32 func000276c8(struct tiletype3 *tile, f32 x, f32 z, f32 width, struct prop *prop, struct collisionthing *thing);
+void func00027738(struct coord *pos, f32 width, struct tile *start, struct tile *end, u16 flags, bool checkvertical, f32 arg6, f32 arg7, struct prop *prop, struct collisionthing *things, s32 maxthings, s32 *thingnum, s32 roomnum);
 void func00027d1c(struct coord *pos, f32 width, s16 *rooms, u32 types, u16 arg4, u32 arg5, f32 arg6, f32 arg7, struct collisionthing *arg8, s32 arg9);
 u32 func00027f78(void);
-u32 func00028200(void);
+s32 func00028200(struct tiletype0 *tile, struct coord *pos, f32 width, f32 y1, f32 y2);
 u32 func0002840c(void);
 u32 func00028638(void);
 u32 func0002885c(void);
@@ -120,7 +120,7 @@ u32 func0002deac(void);
 u32 func0002ded8(void);
 u32 func0002dffc(void);
 u32 func0002e278(void);
-bool func0002e4c4(struct geo *geo, s16 *rooms, u32 arg2);
+bool func0002e4c4(struct tiletype3 *geo, s16 *rooms, u32 arg2);
 u32 func0002e680(void);
 u32 func0002e82c(void);
 u32 func0002e9d8(void);
diff --git a/src/include/types.h b/src/include/types.h
index fb25db513..85048bdc0 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -547,6 +547,60 @@ struct aibot {
 	/*0x2d4*/ f32 unk2d4;
 };
 
+struct tile {
+	/*0x00*/ u8 type;
+	/*0x01*/ u8 numvertices;
+	/*0x02*/ u16 flags;
+};
+
+struct tiletype0 {
+	struct tile header;
+	/*0x04*/ u16 floortype;
+	/*0x06*/ u8 xmin; // These are byte offsets relative to the start of tile
+	/*0x07*/ u8 ymin;
+	/*0x08*/ u8 zmin;
+	/*0x09*/ u8 xmax;
+	/*0x0a*/ u8 ymax;
+	/*0x0b*/ u8 zmax;
+	/*0x0c*/ u16 floorcol;
+	u16 unk0e;
+};
+
+struct tiletype1 {
+	struct tile header;
+	/*0x04*/ u16 floortype;
+	/*0x06*/ u8 xmin; // These are byte offsets relative to the start of tile
+	/*0x07*/ u8 ymin;
+	/*0x08*/ u8 zmin;
+	/*0x09*/ u8 xmax;
+	/*0x0a*/ u8 ymax;
+	/*0x0b*/ u8 zmax;
+	/*0x0c*/ u16 floorcol;
+};
+
+struct tiletype2 {
+	struct tile header;
+	/*0x04*/ f32 ymax;
+	/*0x04*/ f32 ymin;
+};
+
+struct tiletype3 {
+	struct tile header;
+	/*0x04*/ f32 ymax;
+	/*0x08*/ f32 ymin;
+	/*0x0c*/ f32 x;
+	/*0x10*/ f32 z;
+	/*0x14*/ f32 width;
+};
+
+struct tilething {
+	struct tile *tile;
+	u32 unk04;
+	u32 unk08;
+	struct prop *lift;
+	u32 floorroom;
+};
+
 struct act_stand {
 	/*0x2c*/ s32 unk02c;
 	/*0x30*/ u32 face_entitytype;
@@ -819,17 +873,6 @@ struct act_skjump {
 	/*0x50*/ f32 y;
 };
 
-struct geo {
-	/*0x00*/ u8 type;
-	/*0x01*/ u8 unk01;
-	/*0x02*/ u16 unk02;
-	/*0x04*/ f32 ymax;
-	/*0x08*/ f32 ymin;
-	/*0x0c*/ f32 x;
-	/*0x10*/ f32 z;
-	/*0x14*/ f32 width;
-};
-
 struct chrdata {
 	/*0x000*/ s16 chrnum;
 	/*0x002*/ s8 accuracyrating;
@@ -918,7 +961,7 @@ struct chrdata {
 	/*0x12e*/ s16 chrseeshot;
 	/*0x130*/ s16 chrseedie;
 	/*0x132*/ s16 chrdup;
-	struct geo geo;
+	struct tiletype3 geo;
 	/*0x14c*/ f32 shotbondsum;
 	/*0x150*/ f32 aimuplshoulder;
 	/*0x154*/ f32 aimuprshoulder;
@@ -1180,7 +1223,11 @@ struct defaultobj {
 	/*0x18*/ struct model *model;
 	/*0x1c*/ f32 realrot[9];
 	/*0x40*/ u32 hidden;
-	/*0x44*/ struct geo *geo;
+	union {
+		/*0x44*/ struct tiletype2 *geo2;
+		/*0x44*/ struct tiletype3 *geo3;
+		/*0x44*/ struct tiletype3 *unkgeo; // temporary, to indicate that I don't know which geo pointer is being used
+	};
 	union {
 		/*0x48*/ struct projectile *projectile;
 		/*0x48*/ struct monitorthing *monitorthing;
@@ -2688,8 +2735,8 @@ struct player {
 	/*0x19c0*/ f32 vv_headheight; // 172 when Jo, regardless of crouch state
 	/*0x19c4*/ f32 vv_eyeheight;  // 159 when Jo, regardless of crouch state
 	/*0x19c8*/ bool haschrbody;
-	/*0x19cc*/ struct geo periminfo;
-	/*0x19e4*/ struct geo perimshoot;
+	/*0x19cc*/ struct tiletype3 periminfo;
+	/*0x19e4*/ struct tiletype3 perimshoot;
 	/*0x19fc*/ f32 bondprevtheta;
 	/*0x1a00*/ struct coord grabbedprevpos;
 	/*0x1a0c*/ f32 grabbedrotoffset;
@@ -5806,28 +5853,6 @@ struct mpconfigfull {
 	struct mpstrings strings;
 };
 
-struct tile {
-	/*0x00*/ u8 unk00; // 0 or 1 to enable floorcol, 2 or 3 to disable
-	/*0x01*/ u8 numvertices;
-	/*0x02*/ u16 flags;
-	/*0x04*/ u16 floortype;
-	/*0x06*/ u8 unk06;
-	/*0x07*/ u8 unk07;
-	/*0x08*/ u8 unk08;
-	/*0x09*/ u8 unk09;
-	/*0x0a*/ u8 unk0a;
-	/*0x0b*/ u8 unk0b;
-	/*0x0c*/ u16 floorcol;
-};
-
-struct tilething {
-	struct tile *tile;
-	u32 unk04;
-	u32 unk08;
-	struct prop *lift;
-	u32 floorroom;
-};
-
 struct movedata {
 	/*0x00*/ s32 canswivelgun;
 	/*0x04*/ s32 canmanualaim;
@@ -6888,7 +6913,7 @@ struct collisionthing {
 	u32 unk04;
 	u32 unk08;
 	u32 unk0c;
-	u32 unk10;
+	u32 roomnum;
 };
 
 struct escastepkeyframe {
diff --git a/src/lib/lib_233c0.c b/src/lib/lib_233c0.c
index a719939b5..13ad801c3 100644
--- a/src/lib/lib_233c0.c
+++ b/src/lib/lib_233c0.c
@@ -2843,22 +2843,24 @@ void tileGetFloorCol(struct tile *tile, u16 *floorcol)
 		return;
 	}
 
-	if (tile->unk00 == 0) {
-		*floorcol = tile->floorcol;
+	if (tile->type == TILETYPE_00) {
+		struct tiletype0 *tile0 = (struct tiletype0 *) tile;
+		*floorcol = tile0->floorcol;
 		return;
 	}
 
-	if (tile->unk00 == 1) {
-		*floorcol = tile->floorcol;
+	if (tile->type == TILETYPE_01) {
+		struct tiletype1 *tile1 = (struct tiletype1 *) tile;
+		*floorcol = tile1->floorcol;
 		return;
 	}
 
-	if (tile->unk00 == 2) {
+	if (tile->type == TILETYPE_02) {
 		*floorcol = 0xfff;
 		return;
 	}
 
-	if (tile->unk00 == 3) {
+	if (tile->type == TILETYPE_03) {
 		*floorcol = 0xfff;
 	}
 }
@@ -2881,22 +2883,24 @@ void tileGetFloorType(struct tile *tile, u8 *floortype)
 		return;
 	}
 
-	if (tile->unk00 == 0) {
-		*floortype = tile->floortype;
+	if (tile->type == TILETYPE_00) {
+		struct tiletype0 *tile0 = (struct tiletype0 *) tile;
+		*floortype = tile0->floortype;
 		return;
 	}
 
-	if (tile->unk00 == 1) {
-		*floortype = tile->floortype;
+	if (tile->type == TILETYPE_01) {
+		struct tiletype1 *tile1 = (struct tiletype1 *) tile;
+		*floortype = tile1->floortype;
 		return;
 	}
 
-	if (tile->unk00 == 2) {
+	if (tile->type == TILETYPE_02) {
 		*floortype = 0xff;
 		return;
 	}
 
-	if (tile->unk00 == 3) {
+	if (tile->type == TILETYPE_03) {
 		*floortype = 0xff;
 	}
 }
@@ -4795,404 +4799,108 @@ glabel func000276c8
 /*    27734:	00601025 */ 	or	$v0,$v1,$zero
 );
 
-GLOBAL_ASM(
-glabel func00027738
-/*    27738:	27bdff90 */ 	addiu	$sp,$sp,-112
-/*    2773c:	f7b40020 */ 	sdc1	$f20,0x20($sp)
-/*    27740:	4485a000 */ 	mtc1	$a1,$f20
-/*    27744:	afb20040 */ 	sw	$s2,0x40($sp)
-/*    27748:	afb00038 */ 	sw	$s0,0x38($sp)
-/*    2774c:	00c7082b */ 	sltu	$at,$a2,$a3
-/*    27750:	00809025 */ 	or	$s2,$a0,$zero
-/*    27754:	afbf005c */ 	sw	$ra,0x5c($sp)
-/*    27758:	afbe0058 */ 	sw	$s8,0x58($sp)
-/*    2775c:	afb70054 */ 	sw	$s7,0x54($sp)
-/*    27760:	afb60050 */ 	sw	$s6,0x50($sp)
-/*    27764:	afb5004c */ 	sw	$s5,0x4c($sp)
-/*    27768:	afb40048 */ 	sw	$s4,0x48($sp)
-/*    2776c:	afb30044 */ 	sw	$s3,0x44($sp)
-/*    27770:	afb1003c */ 	sw	$s1,0x3c($sp)
-/*    27774:	f7b80030 */ 	sdc1	$f24,0x30($sp)
-/*    27778:	f7b60028 */ 	sdc1	$f22,0x28($sp)
-/*    2777c:	afa7007c */ 	sw	$a3,0x7c($sp)
-/*    27780:	10200157 */ 	beqz	$at,.L00027ce0
-/*    27784:	00c08025 */ 	or	$s0,$a2,$zero
-/*    27788:	c7b8008c */ 	lwc1	$f24,0x8c($sp)
-/*    2778c:	c7b60088 */ 	lwc1	$f22,0x88($sp)
-/*    27790:	8fbe0084 */ 	lw	$s8,0x84($sp)
-/*    27794:	97b70082 */ 	lhu	$s7,0x82($sp)
-/*    27798:	2415000c */ 	addiu	$s5,$zero,0xc
-/*    2779c:	24140014 */ 	addiu	$s4,$zero,0x14
-/*    277a0:	8fb30094 */ 	lw	$s3,0x94($sp)
-/*    277a4:	8fb1009c */ 	lw	$s1,0x9c($sp)
-/*    277a8:	92020000 */ 	lbu	$v0,0x0($s0)
-.L000277ac:
-/*    277ac:	24010001 */ 	addiu	$at,$zero,0x1
-/*    277b0:	1440007d */ 	bnez	$v0,.L000279a8
-/*    277b4:	00000000 */ 	nop
-/*    277b8:	96020002 */ 	lhu	$v0,0x2($s0)
-/*    277bc:	0200b025 */ 	or	$s6,$s0,$zero
-/*    277c0:	00577824 */ 	and	$t7,$v0,$s7
-/*    277c4:	51e00072 */ 	beqzl	$t7,.L00027990
-/*    277c8:	92d90001 */ 	lbu	$t9,0x1($s6)
-/*    277cc:	92180006 */ 	lbu	$t8,0x6($s0)
-/*    277d0:	c64c0000 */ 	lwc1	$f12,0x0($s2)
-/*    277d4:	0310c821 */ 	addu	$t9,$t8,$s0
-/*    277d8:	87280000 */ 	lh	$t0,0x0($t9)
-/*    277dc:	44882000 */ 	mtc1	$t0,$f4
-/*    277e0:	00000000 */ 	nop
-/*    277e4:	468021a0 */ 	cvt.s.w	$f6,$f4
-/*    277e8:	46143201 */ 	sub.s	$f8,$f6,$f20
-/*    277ec:	460c403e */ 	c.le.s	$f8,$f12
-/*    277f0:	00000000 */ 	nop
-/*    277f4:	45020066 */ 	bc1fl	.L00027990
-/*    277f8:	92d90001 */ 	lbu	$t9,0x1($s6)
-/*    277fc:	92090009 */ 	lbu	$t1,0x9($s0)
-/*    27800:	01305021 */ 	addu	$t2,$t1,$s0
-/*    27804:	854b0000 */ 	lh	$t3,0x0($t2)
-/*    27808:	448b5000 */ 	mtc1	$t3,$f10
-/*    2780c:	00000000 */ 	nop
-/*    27810:	46805420 */ 	cvt.s.w	$f16,$f10
-/*    27814:	46148480 */ 	add.s	$f18,$f16,$f20
-/*    27818:	4612603e */ 	c.le.s	$f12,$f18
-/*    2781c:	00000000 */ 	nop
-/*    27820:	4502005b */ 	bc1fl	.L00027990
-/*    27824:	92d90001 */ 	lbu	$t9,0x1($s6)
-/*    27828:	920c0008 */ 	lbu	$t4,0x8($s0)
-/*    2782c:	c6420008 */ 	lwc1	$f2,0x8($s2)
-/*    27830:	01906821 */ 	addu	$t5,$t4,$s0
-/*    27834:	85ae0000 */ 	lh	$t6,0x0($t5)
-/*    27838:	448e2000 */ 	mtc1	$t6,$f4
-/*    2783c:	00000000 */ 	nop
-/*    27840:	468021a0 */ 	cvt.s.w	$f6,$f4
-/*    27844:	46143201 */ 	sub.s	$f8,$f6,$f20
-/*    27848:	4602403e */ 	c.le.s	$f8,$f2
-/*    2784c:	00000000 */ 	nop
-/*    27850:	4502004f */ 	bc1fl	.L00027990
-/*    27854:	92d90001 */ 	lbu	$t9,0x1($s6)
-/*    27858:	920f000b */ 	lbu	$t7,0xb($s0)
-/*    2785c:	01f0c021 */ 	addu	$t8,$t7,$s0
-/*    27860:	87190000 */ 	lh	$t9,0x0($t8)
-/*    27864:	44995000 */ 	mtc1	$t9,$f10
-/*    27868:	00000000 */ 	nop
-/*    2786c:	46805420 */ 	cvt.s.w	$f16,$f10
-/*    27870:	46148480 */ 	add.s	$f18,$f16,$f20
-/*    27874:	4612103e */ 	c.le.s	$f2,$f18
-/*    27878:	00000000 */ 	nop
-/*    2787c:	45020044 */ 	bc1fl	.L00027990
-/*    27880:	92d90001 */ 	lbu	$t9,0x1($s6)
-/*    27884:	13c00018 */ 	beqz	$s8,.L000278e8
-/*    27888:	304e0080 */ 	andi	$t6,$v0,0x80
-/*    2788c:	92080007 */ 	lbu	$t0,0x7($s0)
-/*    27890:	c6400004 */ 	lwc1	$f0,0x4($s2)
-/*    27894:	01104821 */ 	addu	$t1,$t0,$s0
-/*    27898:	852a0000 */ 	lh	$t2,0x0($t1)
-/*    2789c:	46160100 */ 	add.s	$f4,$f0,$f22
-/*    278a0:	448a3000 */ 	mtc1	$t2,$f6
-/*    278a4:	00000000 */ 	nop
-/*    278a8:	46803220 */ 	cvt.s.w	$f8,$f6
-/*    278ac:	4604403e */ 	c.le.s	$f8,$f4
-/*    278b0:	00000000 */ 	nop
-/*    278b4:	45020036 */ 	bc1fl	.L00027990
-/*    278b8:	92d90001 */ 	lbu	$t9,0x1($s6)
-/*    278bc:	920b000a */ 	lbu	$t3,0xa($s0)
-/*    278c0:	46180480 */ 	add.s	$f18,$f0,$f24
-/*    278c4:	01706021 */ 	addu	$t4,$t3,$s0
-/*    278c8:	858d0000 */ 	lh	$t5,0x0($t4)
-/*    278cc:	448d5000 */ 	mtc1	$t5,$f10
-/*    278d0:	00000000 */ 	nop
-/*    278d4:	46805420 */ 	cvt.s.w	$f16,$f10
-/*    278d8:	4610903e */ 	c.le.s	$f18,$f16
-/*    278dc:	00000000 */ 	nop
-/*    278e0:	4502002b */ 	bc1fl	.L00027990
-/*    278e4:	92d90001 */ 	lbu	$t9,0x1($s6)
-.L000278e8:
-/*    278e8:	11c0000c */ 	beqz	$t6,.L0002791c
-/*    278ec:	24030001 */ 	addiu	$v1,$zero,0x1
-/*    278f0:	c6400004 */ 	lwc1	$f0,0x4($s2)
-/*    278f4:	4406a000 */ 	mfc1	$a2,$f20
-/*    278f8:	02002025 */ 	or	$a0,$s0,$zero
-/*    278fc:	46180180 */ 	add.s	$f6,$f0,$f24
-/*    27900:	02402825 */ 	or	$a1,$s2,$zero
-/*    27904:	46160100 */ 	add.s	$f4,$f0,$f22
-/*    27908:	44073000 */ 	mfc1	$a3,$f6
-/*    2790c:	0c00a080 */ 	jal	func00028200
-/*    27910:	e7a40010 */ 	swc1	$f4,0x10($sp)
-/*    27914:	10000001 */ 	b	.L0002791c
-/*    27918:	00401825 */ 	or	$v1,$v0,$zero
-.L0002791c:
-/*    2791c:	1060001b */ 	beqz	$v1,.L0002798c
-/*    27920:	8faf0090 */ 	lw	$t7,0x90($sp)
-/*    27924:	8e450000 */ 	lw	$a1,0x0($s2)
-/*    27928:	8e460008 */ 	lw	$a2,0x8($s2)
-/*    2792c:	afaf0010 */ 	sw	$t7,0x10($sp)
-/*    27930:	8e380000 */ 	lw	$t8,0x0($s1)
-/*    27934:	4407a000 */ 	mfc1	$a3,$f20
-/*    27938:	02002025 */ 	or	$a0,$s0,$zero
-/*    2793c:	03140019 */ 	multu	$t8,$s4
-/*    27940:	0000c812 */ 	mflo	$t9
-/*    27944:	03334021 */ 	addu	$t0,$t9,$s3
-/*    27948:	0c009c27 */ 	jal	func0002709c
-/*    2794c:	afa80014 */ 	sw	$t0,0x14($sp)
-/*    27950:	5040000f */ 	beqzl	$v0,.L00027990
-/*    27954:	92d90001 */ 	lbu	$t9,0x1($s6)
-/*    27958:	8e2a0000 */ 	lw	$t2,0x0($s1)
-/*    2795c:	8fa900a0 */ 	lw	$t1,0xa0($sp)
-/*    27960:	01540019 */ 	multu	$t2,$s4
-/*    27964:	00005812 */ 	mflo	$t3
-/*    27968:	026b6021 */ 	addu	$t4,$s3,$t3
-/*    2796c:	ad890010 */ 	sw	$t1,0x10($t4)
-/*    27970:	8e2d0000 */ 	lw	$t5,0x0($s1)
-/*    27974:	25ae0001 */ 	addiu	$t6,$t5,0x1
-/*    27978:	ae2e0000 */ 	sw	$t6,0x0($s1)
-/*    2797c:	8fb80098 */ 	lw	$t8,0x98($sp)
-/*    27980:	01d8082a */ 	slt	$at,$t6,$t8
-/*    27984:	502000d7 */ 	beqzl	$at,.L00027ce4
-/*    27988:	8fbf005c */ 	lw	$ra,0x5c($sp)
-.L0002798c:
-/*    2798c:	92d90001 */ 	lbu	$t9,0x1($s6)
-.L00027990:
-/*    27990:	00194080 */ 	sll	$t0,$t9,0x2
-/*    27994:	01194023 */ 	subu	$t0,$t0,$t9
-/*    27998:	00084040 */ 	sll	$t0,$t0,0x1
-/*    2799c:	02088021 */ 	addu	$s0,$s0,$t0
-/*    279a0:	100000cb */ 	b	.L00027cd0
-/*    279a4:	2610000e */ 	addiu	$s0,$s0,0xe
-.L000279a8:
-/*    279a8:	5441006a */ 	bnel	$v0,$at,.L00027b54
-/*    279ac:	24010002 */ 	addiu	$at,$zero,0x2
-/*    279b0:	960a0002 */ 	lhu	$t2,0x2($s0)
-/*    279b4:	02001825 */ 	or	$v1,$s0,$zero
-/*    279b8:	01575824 */ 	and	$t3,$t2,$s7
-/*    279bc:	5160005e */ 	beqzl	$t3,.L00027b38
-/*    279c0:	90690001 */ 	lbu	$t1,0x1($v1)
-/*    279c4:	92090006 */ 	lbu	$t1,0x6($s0)
-/*    279c8:	c64c0000 */ 	lwc1	$f12,0x0($s2)
-/*    279cc:	01350019 */ 	multu	$t1,$s5
-/*    279d0:	00006012 */ 	mflo	$t4
-/*    279d4:	020c6821 */ 	addu	$t5,$s0,$t4
-/*    279d8:	c5a80010 */ 	lwc1	$f8,0x10($t5)
-/*    279dc:	46144281 */ 	sub.s	$f10,$f8,$f20
-/*    279e0:	460c503e */ 	c.le.s	$f10,$f12
-/*    279e4:	00000000 */ 	nop
-/*    279e8:	45020053 */ 	bc1fl	.L00027b38
-/*    279ec:	90690001 */ 	lbu	$t1,0x1($v1)
-/*    279f0:	920e0009 */ 	lbu	$t6,0x9($s0)
-/*    279f4:	01d50019 */ 	multu	$t6,$s5
-/*    279f8:	00007812 */ 	mflo	$t7
-/*    279fc:	020fc021 */ 	addu	$t8,$s0,$t7
-/*    27a00:	c7100010 */ 	lwc1	$f16,0x10($t8)
-/*    27a04:	46148480 */ 	add.s	$f18,$f16,$f20
-/*    27a08:	4612603e */ 	c.le.s	$f12,$f18
-/*    27a0c:	00000000 */ 	nop
-/*    27a10:	45020049 */ 	bc1fl	.L00027b38
-/*    27a14:	90690001 */ 	lbu	$t1,0x1($v1)
-/*    27a18:	92190008 */ 	lbu	$t9,0x8($s0)
-/*    27a1c:	c6420008 */ 	lwc1	$f2,0x8($s2)
-/*    27a20:	03350019 */ 	multu	$t9,$s5
-/*    27a24:	00004012 */ 	mflo	$t0
-/*    27a28:	02085021 */ 	addu	$t2,$s0,$t0
-/*    27a2c:	c5460018 */ 	lwc1	$f6,0x18($t2)
-/*    27a30:	46143101 */ 	sub.s	$f4,$f6,$f20
-/*    27a34:	4602203e */ 	c.le.s	$f4,$f2
-/*    27a38:	00000000 */ 	nop
-/*    27a3c:	4502003e */ 	bc1fl	.L00027b38
-/*    27a40:	90690001 */ 	lbu	$t1,0x1($v1)
-/*    27a44:	920b000b */ 	lbu	$t3,0xb($s0)
-/*    27a48:	01750019 */ 	multu	$t3,$s5
-/*    27a4c:	00004812 */ 	mflo	$t1
-/*    27a50:	02096021 */ 	addu	$t4,$s0,$t1
-/*    27a54:	c5880018 */ 	lwc1	$f8,0x18($t4)
-/*    27a58:	46144280 */ 	add.s	$f10,$f8,$f20
-/*    27a5c:	460a103e */ 	c.le.s	$f2,$f10
-/*    27a60:	00000000 */ 	nop
-/*    27a64:	45020034 */ 	bc1fl	.L00027b38
-/*    27a68:	90690001 */ 	lbu	$t1,0x1($v1)
-/*    27a6c:	13c00016 */ 	beqz	$s8,.L00027ac8
-/*    27a70:	8faa0090 */ 	lw	$t2,0x90($sp)
-/*    27a74:	920d0007 */ 	lbu	$t5,0x7($s0)
-/*    27a78:	c6400004 */ 	lwc1	$f0,0x4($s2)
-/*    27a7c:	01b50019 */ 	multu	$t5,$s5
-/*    27a80:	46160400 */ 	add.s	$f16,$f0,$f22
-/*    27a84:	00007012 */ 	mflo	$t6
-/*    27a88:	020e7821 */ 	addu	$t7,$s0,$t6
-/*    27a8c:	c5f20014 */ 	lwc1	$f18,0x14($t7)
-/*    27a90:	4610903e */ 	c.le.s	$f18,$f16
-/*    27a94:	00000000 */ 	nop
-/*    27a98:	45020027 */ 	bc1fl	.L00027b38
-/*    27a9c:	90690001 */ 	lbu	$t1,0x1($v1)
-/*    27aa0:	9218000a */ 	lbu	$t8,0xa($s0)
-/*    27aa4:	46180100 */ 	add.s	$f4,$f0,$f24
-/*    27aa8:	03150019 */ 	multu	$t8,$s5
-/*    27aac:	0000c812 */ 	mflo	$t9
-/*    27ab0:	02194021 */ 	addu	$t0,$s0,$t9
-/*    27ab4:	c5060014 */ 	lwc1	$f6,0x14($t0)
-/*    27ab8:	4606203e */ 	c.le.s	$f4,$f6
-/*    27abc:	00000000 */ 	nop
-/*    27ac0:	4502001d */ 	bc1fl	.L00027b38
-/*    27ac4:	90690001 */ 	lbu	$t1,0x1($v1)
-.L00027ac8:
-/*    27ac8:	afaa0010 */ 	sw	$t2,0x10($sp)
-/*    27acc:	8e2b0000 */ 	lw	$t3,0x0($s1)
-/*    27ad0:	44056000 */ 	mfc1	$a1,$f12
-/*    27ad4:	44061000 */ 	mfc1	$a2,$f2
-/*    27ad8:	01740019 */ 	multu	$t3,$s4
-/*    27adc:	4407a000 */ 	mfc1	$a3,$f20
-/*    27ae0:	afa30060 */ 	sw	$v1,0x60($sp)
-/*    27ae4:	02002025 */ 	or	$a0,$s0,$zero
-/*    27ae8:	00004812 */ 	mflo	$t1
-/*    27aec:	01336021 */ 	addu	$t4,$t1,$s3
-/*    27af0:	0c009cbe */ 	jal	func000272f8
-/*    27af4:	afac0014 */ 	sw	$t4,0x14($sp)
-/*    27af8:	1040000e */ 	beqz	$v0,.L00027b34
-/*    27afc:	8fa30060 */ 	lw	$v1,0x60($sp)
-/*    27b00:	8e2e0000 */ 	lw	$t6,0x0($s1)
-/*    27b04:	8fad00a0 */ 	lw	$t5,0xa0($sp)
-/*    27b08:	01d40019 */ 	multu	$t6,$s4
-/*    27b0c:	00007812 */ 	mflo	$t7
-/*    27b10:	026fc021 */ 	addu	$t8,$s3,$t7
-/*    27b14:	af0d0010 */ 	sw	$t5,0x10($t8)
-/*    27b18:	8e390000 */ 	lw	$t9,0x0($s1)
-/*    27b1c:	27280001 */ 	addiu	$t0,$t9,0x1
-/*    27b20:	ae280000 */ 	sw	$t0,0x0($s1)
-/*    27b24:	8fab0098 */ 	lw	$t3,0x98($sp)
-/*    27b28:	010b082a */ 	slt	$at,$t0,$t3
-/*    27b2c:	5020006d */ 	beqzl	$at,.L00027ce4
-/*    27b30:	8fbf005c */ 	lw	$ra,0x5c($sp)
-.L00027b34:
-/*    27b34:	90690001 */ 	lbu	$t1,0x1($v1)
-.L00027b38:
-/*    27b38:	252cffc0 */ 	addiu	$t4,$t1,-64
-/*    27b3c:	01950019 */ 	multu	$t4,$s5
-/*    27b40:	00007012 */ 	mflo	$t6
-/*    27b44:	020e8021 */ 	addu	$s0,$s0,$t6
-/*    27b48:	10000061 */ 	b	.L00027cd0
-/*    27b4c:	26100310 */ 	addiu	$s0,$s0,0x310
-/*    27b50:	24010002 */ 	addiu	$at,$zero,0x2
-.L00027b54:
-/*    27b54:	1441002e */ 	bne	$v0,$at,.L00027c10
-/*    27b58:	32ef001c */ 	andi	$t7,$s7,0x1c
-/*    27b5c:	11e0002a */ 	beqz	$t7,.L00027c08
-/*    27b60:	00000000 */ 	nop
-/*    27b64:	13c0000e */ 	beqz	$s8,.L00027ba0
-/*    27b68:	8fad0090 */ 	lw	$t5,0x90($sp)
-/*    27b6c:	c6400004 */ 	lwc1	$f0,0x4($s2)
-/*    27b70:	c60a0008 */ 	lwc1	$f10,0x8($s0)
-/*    27b74:	46160200 */ 	add.s	$f8,$f0,$f22
-/*    27b78:	4608503e */ 	c.le.s	$f10,$f8
-/*    27b7c:	00000000 */ 	nop
-/*    27b80:	45000021 */ 	bc1f	.L00027c08
-/*    27b84:	00000000 */ 	nop
-/*    27b88:	46180480 */ 	add.s	$f18,$f0,$f24
-/*    27b8c:	c6100004 */ 	lwc1	$f16,0x4($s0)
-/*    27b90:	4610903e */ 	c.le.s	$f18,$f16
-/*    27b94:	00000000 */ 	nop
-/*    27b98:	4500001b */ 	bc1f	.L00027c08
-/*    27b9c:	00000000 */ 	nop
-.L00027ba0:
-/*    27ba0:	8e450000 */ 	lw	$a1,0x0($s2)
-/*    27ba4:	8e460008 */ 	lw	$a2,0x8($s2)
-/*    27ba8:	afad0010 */ 	sw	$t5,0x10($sp)
-/*    27bac:	8e380000 */ 	lw	$t8,0x0($s1)
-/*    27bb0:	4407a000 */ 	mfc1	$a3,$f20
-/*    27bb4:	02002025 */ 	or	$a0,$s0,$zero
-/*    27bb8:	03140019 */ 	multu	$t8,$s4
-/*    27bbc:	0000c812 */ 	mflo	$t9
-/*    27bc0:	03334021 */ 	addu	$t0,$t9,$s3
-/*    27bc4:	0c009d38 */ 	jal	func000274e0
-/*    27bc8:	afa80014 */ 	sw	$t0,0x14($sp)
-/*    27bcc:	1040000e */ 	beqz	$v0,.L00027c08
-/*    27bd0:	00000000 */ 	nop
-/*    27bd4:	8e2b0000 */ 	lw	$t3,0x0($s1)
-/*    27bd8:	8faa00a0 */ 	lw	$t2,0xa0($sp)
-/*    27bdc:	01740019 */ 	multu	$t3,$s4
-/*    27be0:	00004812 */ 	mflo	$t1
-/*    27be4:	02696021 */ 	addu	$t4,$s3,$t1
-/*    27be8:	ad8a0010 */ 	sw	$t2,0x10($t4)
-/*    27bec:	8e2e0000 */ 	lw	$t6,0x0($s1)
-/*    27bf0:	25cf0001 */ 	addiu	$t7,$t6,0x1
-/*    27bf4:	ae2f0000 */ 	sw	$t7,0x0($s1)
-/*    27bf8:	8fb80098 */ 	lw	$t8,0x98($sp)
-/*    27bfc:	01f8082a */ 	slt	$at,$t7,$t8
-/*    27c00:	50200038 */ 	beqzl	$at,.L00027ce4
-/*    27c04:	8fbf005c */ 	lw	$ra,0x5c($sp)
-.L00027c08:
-/*    27c08:	10000031 */ 	b	.L00027cd0
-/*    27c0c:	2610004c */ 	addiu	$s0,$s0,0x4c
-.L00027c10:
-/*    27c10:	24010003 */ 	addiu	$at,$zero,0x3
-/*    27c14:	5441002f */ 	bnel	$v0,$at,.L00027cd4
-/*    27c18:	8faa007c */ 	lw	$t2,0x7c($sp)
-/*    27c1c:	96190002 */ 	lhu	$t9,0x2($s0)
-/*    27c20:	02f94024 */ 	and	$t0,$s7,$t9
-/*    27c24:	5100002a */ 	beqzl	$t0,.L00027cd0
-/*    27c28:	26100018 */ 	addiu	$s0,$s0,0x18
-/*    27c2c:	13c0000e */ 	beqz	$s8,.L00027c68
-/*    27c30:	8fab0090 */ 	lw	$t3,0x90($sp)
-/*    27c34:	c6400004 */ 	lwc1	$f0,0x4($s2)
-/*    27c38:	c6040008 */ 	lwc1	$f4,0x8($s0)
-/*    27c3c:	46160180 */ 	add.s	$f6,$f0,$f22
-/*    27c40:	4606203e */ 	c.le.s	$f4,$f6
-/*    27c44:	00000000 */ 	nop
-/*    27c48:	45020021 */ 	bc1fl	.L00027cd0
-/*    27c4c:	26100018 */ 	addiu	$s0,$s0,0x18
-/*    27c50:	46180280 */ 	add.s	$f10,$f0,$f24
-/*    27c54:	c6080004 */ 	lwc1	$f8,0x4($s0)
-/*    27c58:	4608503e */ 	c.le.s	$f10,$f8
-/*    27c5c:	00000000 */ 	nop
-/*    27c60:	4502001b */ 	bc1fl	.L00027cd0
-/*    27c64:	26100018 */ 	addiu	$s0,$s0,0x18
-.L00027c68:
-/*    27c68:	8e450000 */ 	lw	$a1,0x0($s2)
-/*    27c6c:	8e460008 */ 	lw	$a2,0x8($s2)
-/*    27c70:	afab0010 */ 	sw	$t3,0x10($sp)
-/*    27c74:	8e290000 */ 	lw	$t1,0x0($s1)
-/*    27c78:	4407a000 */ 	mfc1	$a3,$f20
-/*    27c7c:	02002025 */ 	or	$a0,$s0,$zero
-/*    27c80:	01340019 */ 	multu	$t1,$s4
-/*    27c84:	00005012 */ 	mflo	$t2
-/*    27c88:	01536021 */ 	addu	$t4,$t2,$s3
-/*    27c8c:	0c009db2 */ 	jal	func000276c8
-/*    27c90:	afac0014 */ 	sw	$t4,0x14($sp)
-/*    27c94:	5040000e */ 	beqzl	$v0,.L00027cd0
-/*    27c98:	26100018 */ 	addiu	$s0,$s0,0x18
-/*    27c9c:	8e2f0000 */ 	lw	$t7,0x0($s1)
-/*    27ca0:	8fae00a0 */ 	lw	$t6,0xa0($sp)
-/*    27ca4:	01f40019 */ 	multu	$t7,$s4
-/*    27ca8:	00006812 */ 	mflo	$t5
-/*    27cac:	026dc021 */ 	addu	$t8,$s3,$t5
-/*    27cb0:	af0e0010 */ 	sw	$t6,0x10($t8)
-/*    27cb4:	8e390000 */ 	lw	$t9,0x0($s1)
-/*    27cb8:	27280001 */ 	addiu	$t0,$t9,0x1
-/*    27cbc:	ae280000 */ 	sw	$t0,0x0($s1)
-/*    27cc0:	8fa90098 */ 	lw	$t1,0x98($sp)
-/*    27cc4:	0109082a */ 	slt	$at,$t0,$t1
-/*    27cc8:	10200005 */ 	beqz	$at,.L00027ce0
-/*    27ccc:	26100018 */ 	addiu	$s0,$s0,0x18
-.L00027cd0:
-/*    27cd0:	8faa007c */ 	lw	$t2,0x7c($sp)
-.L00027cd4:
-/*    27cd4:	020a082b */ 	sltu	$at,$s0,$t2
-/*    27cd8:	5420feb4 */ 	bnezl	$at,.L000277ac
-/*    27cdc:	92020000 */ 	lbu	$v0,0x0($s0)
-.L00027ce0:
-/*    27ce0:	8fbf005c */ 	lw	$ra,0x5c($sp)
-.L00027ce4:
-/*    27ce4:	d7b40020 */ 	ldc1	$f20,0x20($sp)
-/*    27ce8:	d7b60028 */ 	ldc1	$f22,0x28($sp)
-/*    27cec:	d7b80030 */ 	ldc1	$f24,0x30($sp)
-/*    27cf0:	8fb00038 */ 	lw	$s0,0x38($sp)
-/*    27cf4:	8fb1003c */ 	lw	$s1,0x3c($sp)
-/*    27cf8:	8fb20040 */ 	lw	$s2,0x40($sp)
-/*    27cfc:	8fb30044 */ 	lw	$s3,0x44($sp)
-/*    27d00:	8fb40048 */ 	lw	$s4,0x48($sp)
-/*    27d04:	8fb5004c */ 	lw	$s5,0x4c($sp)
-/*    27d08:	8fb60050 */ 	lw	$s6,0x50($sp)
-/*    27d0c:	8fb70054 */ 	lw	$s7,0x54($sp)
-/*    27d10:	8fbe0058 */ 	lw	$s8,0x58($sp)
-/*    27d14:	03e00008 */ 	jr	$ra
-/*    27d18:	27bd0070 */ 	addiu	$sp,$sp,0x70
-);
+void func00027738(struct coord *pos, f32 width, struct tile *start, struct tile *end, u16 flags,
+		bool checkvertical, f32 arg6, f32 arg7, struct prop *prop,
+		struct collisionthing *things, s32 maxthings, s32 *thingnum, s32 roomnum)
+{
+	struct tile *tile = start;
+	s32 result;
+
+	while (tile < end) {
+		if (tile->type == TILETYPE_00) {
+			struct tiletype0 *type0 = (struct tiletype0 *) tile;
+
+			if ((tile->flags & flags)
+					&& pos->x >= *(s16 *)(type0->xmin + (u32)type0) - width
+					&& pos->x <= *(s16 *)(type0->xmax + (u32)type0) + width
+					&& pos->z >= *(s16 *)(type0->zmin + (u32)type0) - width
+					&& pos->z <= *(s16 *)(type0->zmax + (u32)type0) + width
+					&& (!checkvertical || (pos->y + arg6 >= *(s16 *)(type0->ymin + (u32)type0)
+							&& pos->y + arg7 <= *(s16 *)(type0->ymax + (u32)type0)))) {
+				if (tile->flags & TILEFLAG_0080) {
+					result = func00028200(type0, pos, width, pos->y + arg7, pos->y + arg6);
+				} else {
+					result = 1;
+				}
+
+				if (result != 0) {
+					if (func0002709c(type0, pos->x, pos->z, width, prop, &things[*thingnum])) {
+						things[*thingnum].roomnum = roomnum;
+						*thingnum = *thingnum + 1;
+
+						if (*thingnum >= maxthings) {
+							break;
+						}
+					}
+				}
+			}
+
+			tile = (struct tile *)((u32)tile + type0->header.numvertices * 6 + 0xe);
+		} else if (tile->type == TILETYPE_01) {
+			struct tiletype1 *type1 = (struct tiletype1 *) tile;
+			s32 tmp = 0x40;
+
+			if ((tile->flags & flags)
+					&& pos->x >= *(f32 *)((u32)type1 + type1->xmin * 0xc + 0x10) - width
+					&& pos->x <= *(f32 *)((u32)type1 + type1->xmax * 0xc + 0x10) + width
+					&& pos->z >= *(f32 *)((u32)type1 + type1->zmin * 0xc + 0x18) - width
+					&& pos->z <= *(f32 *)((u32)type1 + type1->zmax * 0xc + 0x18) + width
+					&& (!checkvertical || (pos->y + arg6 >= *(f32*)((u32)type1 + type1->ymin * 0xc + 0x14)
+							&& pos->y + arg7 <= *(f32 *)((u32)type1 + type1->ymax * 0xc + 0x14)))) {
+				result = func000272f8(type1, pos->x, pos->z, width, prop, &things[*thingnum]);
+
+				if (result != 0) {
+					things[*thingnum].roomnum = roomnum;
+					*thingnum = *thingnum + 1;
+
+					if (*thingnum >= maxthings) {
+						break;
+					}
+				}
+			}
+
+			tile = (struct tile *)((u32)tile + (type1->header.numvertices - tmp) * 0xc + 0x310);
+		} else if (tile->type == TILETYPE_02) {
+			struct tiletype2 *tile2 = (struct tiletype2 *) tile;
+
+			if ((flags & (TILEFLAG_0004 | TILEFLAG_0008 | TILEFLAG_0010))
+					&& (!checkvertical || (pos->y + arg6 >= tile2->ymin
+							&& pos->y + arg7 <= tile2->ymax))) {
+				result = func000274e0(tile2, pos->x, pos->z, width, prop, &things[*thingnum]);
+
+				if (result) {
+					things[*thingnum].roomnum = roomnum;
+					*thingnum = *thingnum + 1;
+
+					if (*thingnum >= maxthings) {
+						break;
+					}
+				}
+			}
+
+			tile = (struct tile *)((u32)tile + 0x4c);
+		} else if (tile->type == TILETYPE_03) {
+			struct tiletype3 *tile3 = (struct tiletype3 *) tile;
+
+			if ((flags & tile->flags)
+					&& (!checkvertical || (pos->y + arg6 >= tile3->ymin
+							&& pos->y + arg7 <= tile3->ymax))) {
+				result = func000276c8(tile3, pos->x, pos->z, width, prop, &things[*thingnum]);
+
+				if (result) {
+					things[*thingnum].roomnum = roomnum;
+					*thingnum = *thingnum + 1;
+
+					if (*thingnum >= maxthings) {
+						break;
+					}
+				}
+			}
+
+			tile = (struct tile *)((u32)tile + 0x18);
+		}
+	}
+}
 
 void func00027d1c(struct coord *pos, f32 width, s16 *rooms, u32 types, u16 arg4, u32 arg5, f32 arg6, f32 arg7, struct collisionthing *arg8, s32 arg9)
 {
@@ -5211,10 +4919,10 @@ void func00027d1c(struct coord *pos, f32 width, s16 *rooms, u32 types, u16 arg4,
 
 		while (roomnum != -1) {
 			if (roomnum < g_TileNumRooms) {
-				roomdatastart = g_TileFileData.u8 + g_TileRooms[roomnum];
+				roomdatastart = (g_TileFileData.u8 + g_TileRooms[roomnum]);
 				roomdataend = g_TileFileData.u8 + g_TileRooms[roomnum + 1];
 
-				func00027738(pos, width, roomdatastart, roomdataend,
+				func00027738(pos, width, (struct tile *) roomdatastart, (struct tile *) roomdataend,
 						arg4, arg5, arg6, arg7, NULL, arg8, arg9, &sp294, roomnum);
 
 				if (sp294 >= arg9) {
@@ -5234,8 +4942,8 @@ void func00027d1c(struct coord *pos, f32 width, s16 *rooms, u32 types, u16 arg4,
 	while (*propnumptr >= 0) {
 		struct prop *prop = &g_Vars.props[*propnumptr];
 
-		if (propIsOfCdType(prop, types) && propUpdateGeometry(prop, (struct geo **)&roomdatastart, (struct geo **)&roomdataend)) {
-			func00027738(pos, width, roomdatastart, roomdataend,
+		if (propIsOfCdType(prop, types) && propUpdateGeometry(prop, (struct tiletype3 **) &roomdatastart, (struct tiletype3 **) &roomdataend)) {
+			func00027738(pos, width, (struct tile *) roomdatastart, (struct tile *) roomdataend,
 					arg4, arg5, arg6, arg7, prop, arg8, arg9, &sp294, prop->rooms[0]);
 
 			if (sp294 >= arg9) {
@@ -7660,7 +7368,7 @@ f32 cdFindGroundY(struct coord *pos, f32 width, s16 *rooms, u16 *floorcol,
 	}
 
 	if (inlift) {
-		if (tile && tile->unk00 == 1 && (tile->flags & TILEFLAG_0020)) {
+		if (tile && tile->type == TILETYPE_01 && (tile->flags & TILEFLAG_0020)) {
 			*inlift = true;
 			*lift = sp72->lift;