Links Awakening: Implement New Game (#1334)

Adds Link's Awakening: DX. Fully imports and forks LADXR, with permission - https://github.com/daid/LADXR

worlds/ladx/LADXR/patches/madBatter.py

@@ -0,0 +1,42 @@
+from ..assembler import ASM
+from ..utils import formatText
+
+
+def upgradeMadBatter(rom):
+    # Normally the madbatter won't do anything if you have full capacity. Remove that check.
+    rom.patch(0x18, 0x0F05, 0x0F1D, "", fill_nop=True)
+    # Remove the code that finds which upgrade to apply,
+    rom.patch(0x18, 0x0F9E, 0x0FC4, "", fill_nop=True)
+    rom.patch(0x18, 0x0FD2, 0x0FD8, "", fill_nop=True)
+
+    # Finally, at the last step, give the item and the item message.
+    rom.patch(0x18, 0x1016, 0x101B, "", fill_nop=True)
+    rom.patch(0x18, 0x101E, 0x1051, ASM("""
+        ; Mad batter rooms are E0,E1 and E2, load the item type from a table in the rom
+        ; which only has 3 entries, and store it where bank 3E wants it.
+        ldh a, [$F6] ; current room
+        and $0F
+        ld  d, $00
+        ld  e, a
+        ld  hl, $4F90
+        add hl, de
+        ld  a, [hl]
+        ldh [$F1], a
+    
+        ; Give item
+        ld  a, $06 ; giveItemMultiworld
+        rst 8
+        ; Message
+        ld  a, $0A ; showMessageMultiworld
+        rst 8
+        ; Force the dialog at the bottom
+        ld  a, [$C19F]
+        or  $80
+        ld  [$C19F], a
+    """), fill_nop=True)
+    # Setup the default items
+    rom.patch(0x18, 0x0F90, "406060", "848586")
+
+    rom.texts[0xE2] = formatText("You can now carry more Magic Powder!")
+    rom.texts[0xE3] = formatText("You can now carry more Bombs!")
+    rom.texts[0xE4] = formatText("You can now carry more Arrows!")