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/tarin.py

@@ -0,0 +1,51 @@
+from ..assembler import ASM
+from ..utils import formatText
+
+
+def updateTarin(rom):
+    # Do not give the shield.
+    rom.patch(0x05, 0x0CD0, ASM("""
+        ld   d, $04
+        call $5321
+        ld   a, $01
+        ld   [$DB44], a
+    """), "", fill_nop=True)
+
+    # Instead of showing the usual "your shield back" message, give the proper message and give the item.
+    rom.patch(0x05, 0x0CDE, ASM("""
+        ld   a, $91
+        call $2385
+    """), ASM("""
+        ld   a, $0B ; GiveItemAndMessageForRoom
+        rst  8
+    """), fill_nop=True)
+
+    rom.patch(0x05, 0x0CF0, ASM("""
+        xor  a
+        ldh  [$F1], a
+        ld   de, $4CC6
+        call $3C77
+    """), ASM("""
+        ld   a, $0C ; RenderItemForRoom
+        rst  8
+        xor  a
+        ldh  [$F1], a
+    """), fill_nop=True)
+
+    # Set the room status to finished. (replaces a GBC check)
+    rom.patch(0x05, 0x0CAB, 0x0CB0, ASM("""
+        ld a, $20
+        call $36C4
+    """), fill_nop=True)
+
+    # Instead of checking for the shield level to put you in the bed, check the room flag.
+    rom.patch(0x05, 0x1202, ASM("ld a, [$DB44]\nand a"), ASM("ldh a, [$F8]\nand $20"))
+    rom.patch(0x05, 0x0C6D, ASM("ld a, [$DB44]\nand a"), ASM("ldh a, [$F8]\nand $20"))
+
+    # If the starting item is picked up, load the right palette when entering the room
+    rom.patch(0x21, 0x0176, ASM("ld a, [$DB48]\ncp $01"), ASM("ld a, [$DAA3]\ncp $A1"), fill_nop=True)
+    rom.patch(0x05, 0x0C94, "FF473152C5280000", "FD2ED911CE100000")
+    rom.patch(0x05, 0x0CB0, ASM("ld hl, $DC88"), ASM("ld hl, $DC80"))
+
+    # Patch the text that Tarin uses to give your shield back.
+    rom.texts[0x54] = formatText("#####, it is dangerous to go alone!\nTake this!")