started HouseTag for Link's house intro

Events/house_tag.asm

@@ -0,0 +1,79 @@
+; ==============================================================================
+; NEW: Custom Room Tag to initialize the game without the Uncle sprite.
+; 
+
+org $05E219
+  Sprite_ShowMessageUnconditional:
+
+org $01CC18 ; override routine 0x39 "Holes(7)"
+  JML HouseTag
+
+org $01CC5A 
+  HouseTag_Return:
+
+org $228000
+HouseTag:
+{
+  PHX 
+  ; -------------------------------
+  
+  JSR HouseTag_TelepathicPlea
+  JSR HouseTag_WakeUpPlayer
+
+  ; -------------------------------
+  PLX
+  JML HouseTag_Return
+}
+
+; ==============================================================================
+
+
+HouseTag_TelepathicPlea:
+{
+  ; -------------------------------
+  ; Set Link's coordinates to this specific position.
+  LDA.b #$40 : STA $0FC2
+  LDA.b #$09 : STA $0FC3
+  
+  LDA.b #$5A : STA $0FC4
+  LDA.b #$21 : STA $0FC5
+      
+  ; "Accept our quest, Link!"
+  LDA.b #$1F : LDY.b #$00
+  JSL Sprite_ShowMessageUnconditional
+  INC $0D80, X
+
+  RTS
+}
+
+; ==============================================================================
+
+HouseTag_WakeUpPlayer:
+{
+  ; Lighten the screen gradually and then wake Link up partially
+  
+  LDA $1A : AND.b #$03 : BNE .delay
+  
+  LDA $9C : CMP.b #$20 : BEQ .colorTargetReached
+  
+  DEC $9C
+  DEC $9D
+
+.delay
+
+  RTS
+
+.colorTargetReached
+
+  INC $0D80, X
+  
+  INC $037D
+  INC $037C
+  
+  LDA.b #$57 : STA $20
+  LDA.b #$21 : STA $21
+  
+  LDA.b #$01 : STA $02E4
+  
+  RTS
+}