Fixes for Tagalongs for ER

Fixes various tagalong issues that affect Entrance Randomizer, most
involving frog/blacksmith

LTTP_RND_GeneralBugfixes.asm

@@ -329,6 +329,9 @@ DecompSwordGfx:
 org $00D348
 DecompShieldGfx:
 
+org $00D463
+Tagalong_LoadGfx:
+
 org $00D51B
 GetAnimatedSpriteTile:
 

bugfixes.asm

@@ -98,3 +98,20 @@ MakeBunny:
     PLY : PLX
 RTS
 ;--------------------------------------------------------------------------------
+
+;--------------------------------------------------------------------------------
+; fix issue where cross world caves (in Entrance randomizer) don't cause
+; frog to become smith or vice versa.
+FixFrogSmith:
+	LDA.l $7EF3CA : BNE .darkWorld
+		LDA.l $7EF3CC : CMP.b #$07 : BNE .done
+		LDA.b #$08 : STA.l $7EF3CC ; make frog into smith in light world
+		BRA .loadgfx
+	.darkWorld
+		LDA.l $7EF3CC : CMP.b #$08 : BNE .done
+		LDA.b #$07 : STA.l $7EF3CC ; make smith into frog in dark world
+	.loadgfx
+		JSL Tagalong_LoadGfx
+	.done
+RTS
+;--------------------------------------------------------------------------------

entrances.asm

@@ -24,3 +24,15 @@ RTS
 	LDA.w #$0000
 RTS
 ;--------------------------------------------------------------------------------
+SmithDoorCheck:
+	LDA.l SmithTravelsFreely : AND.w #$00FF : BEQ .orig
+		;If SmithTravelsFreely is set Frog/Smith can enter multi-entrance overworld doors
+		JMP.l Overworld_Entrance_BRANCH_RHO
+
+	.orig ; The rest is equivlent to what we overwrote
+	CPX.w #$0076 : !BGE +
+		JMP.l Overworld_Entrance_BRANCH_LAMBDA
+	+
+
+JMP.l Overworld_Entrance_BRANCH_RHO
+;--------------------------------------------------------------------------------

hooks.asm

@@ -2095,3 +2095,20 @@ JSL.l QuickSwap
 org $02A451 ; <- 12451 - Bank02.asm:6283 (LDA $F6 : AND.b #$40 : BEQ .xButtonNotDown)
 JSL.l QuickSwap
 ;================================================================================
+
+;================================================================================
+; Tagalong Fixes
+;--------------------------------------------------------------------------------
+org $0689A7 ; <- 309A7 - sprite_prep.asm: 647 (LDA $7EF3CC : CMP.b #$06 : BEQ .killSprite)
+; Note: In JP 1.0 we have: (CMP.b #$00 : BNE .killSprite) appling US bugfix
+; Prevent followers from causing blind/maiden to despawn:
+CMP.b #$06 : db #$F0 ; BEQ
+;--------------------------------------------------------------------------------
+;Control which doors frog/smith can enter
+org $1BBCF0 ; <- DBCF0 - Bank1B.asm: 248 (LDA $04B8 : BNE BRANCH_MU)
+Overworld_Entrance_BRANCH_LAMBDA: ; Branch here to show Cannot Enter with Follower message
+
+org $1BBD55 ; <- DBD55 - Bank1B.asm: 290 (CPX.w #$0076 : BCC BRANCH_LAMBDA)
+JML.l SmithDoorCheck : NOP
+Overworld_Entrance_BRANCH_RHO: ; branch here to continue into door
+;================================================================================

music.asm

@@ -3,6 +3,7 @@ PreOverworld_LoadProperties_ChooseMusic:
     ; A: scratch space (value never used)
     ; Y: set to overworld animated tileset
     ; X: set to music track/command id
+    JSR.w FixFrogSmith ; Just a convenient spot to install this hook 
 
     LDY.b #$58 ; death mountain animated tileset.
 

tables.asm

@@ -201,6 +201,10 @@ org $30804B ; PC 0x18004B
 QuickSwapFlag:
 db #$00 ; #$00 = Off (default) - #$01 = On
 ;--------------------------------------------------------------------------------
+org $30804C ; PC 0x18004C
+SmithTravelsFreely:
+db #$00 ; #$00 = Off (default) - #$01 = On (frog/smith can enter multi-entrance doors)
+;--------------------------------------------------------------------------------
 org $308080 ; PC 0x180080
 Upgrade5BombsRefill:
 db #$00

zelda.asm

@@ -3,6 +3,7 @@
 ;--------------------------------------------------------------------------------
 SpawnZelda:
 	LDA.l $7EF3CC : CMP #$08 : BEQ + ; don't spawn if dwarf is present
+	CMP #$07 : BEQ + ; don't spawn if frog is present
 	CMP #$0C : BEQ + ; don't spawn if purple chest is present
 		CLC : RTL
 	+