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https://github.com/zeldaret/tmc
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document tile asm functions
This commit is contained in:
theo3
+55
-47
@@ -4,32 +4,33 @@
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.syntax unified
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.text
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.thumb
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.macro transition_tile tile:req, src_layer:req dest_layer:req
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.short \tile
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.byte \src_layer, \dest_layer
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.endm
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gUnk_08016984:: @ 08016984
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.incbin "code_08016984/gUnk_08016984.bin"
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.text
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non_word_aligned_thumb_func_start GetNextScriptCommandHalfword
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GetNextScriptCommandHalfword: @ 0x08016986
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GetNextScriptCommandHalfword::
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ldrh r0, [r0]
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bx lr
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non_word_aligned_thumb_func_start GetNextScriptCommandHalfwordAfterCommandMetadata
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GetNextScriptCommandHalfwordAfterCommandMetadata: @ 0x0801698A
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GetNextScriptCommandHalfwordAfterCommandMetadata::
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ldrh r0, [r0, #2]
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bx lr
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non_word_aligned_thumb_func_start GetNextScriptCommandWord
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GetNextScriptCommandWord: @ 0x0801698E
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GetNextScriptCommandWord::
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ldrh r1, [r0]
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ldrh r0, [r0, #2]
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lsls r0, r0, #0x10
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orrs r0, r1
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bx lr
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thumb_func_start GetNextScriptCommandWordAfterCommandMetadata
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GetNextScriptCommandWordAfterCommandMetadata: @ 0x08016998
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GetNextScriptCommandWordAfterCommandMetadata::
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ldrh r1, [r0, #2]
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ldrh r0, [r0, #4]
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lsls r0, r0, #0x10
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@@ -37,17 +38,15 @@ GetNextScriptCommandWordAfterCommandMetadata: @ 0x08016998
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bx lr
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.align 2, 0
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gUnk_080169A4::
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.byte 0x01, 0xFF, 0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0x01, 0x00
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.byte 0xFF, 0x01, 0x00, 0x00, 0x02, 0xFF, 0x01, 0xFE, 0x00, 0xFF, 0xFF, 0x00, 0xFF, 0x01, 0xFF, 0x02
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.byte 0x00, 0x00, 0x01, 0x01, 0x02, 0xFF, 0x02, 0xFE, 0xFE, 0x02, 0xFF, 0x03, 0xFD, 0xFF, 0xFE, 0x01
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.byte 0x01, 0xFD, 0xFF, 0xFF, 0x03, 0xFE, 0x02, 0x00, 0x00, 0xFF, 0xFE, 0x03, 0xFD, 0x02, 0xFF, 0x00
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.byte 0x00, 0xFD, 0x02, 0x00, 0x00, 0xFF, 0x00, 0xFE, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02
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.byte 0x00, 0x00, 0x00, 0x01, 0x02, 0x00, 0x01, 0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00
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.byte 0x00, 0x00, 0x01, 0x00
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gShakeOffsets::
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.byte 1, -1, 0, 1, 1, 0, 0, 1, -1, -1, 1, 0, -1, 1, 0, 0
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.byte 2, -1, 1, -2, 0, -1, -1, 0, -1, 1, -1, 2, 0, 0, 1, 1
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.byte 2, -1, 2, -2, -2, 2, -1, 3, -3, -1, -2, 1, 1, -3, -1, -1
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.byte 3, -2, 2, 0, 0, -1, -2, 3, -3, 2, -1, 0, 0, -3, 2, 0
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.byte 0, -1, 0, -2, 0, -1, 0, 0, 0, 1, 0, 2, 0, 0, 0, 1
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.byte 2, 0, 1, 0, 0, 0, -1, 0, -1, 0, -1, 0, 0, 0, 1, 0
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thumb_func_start UpdateSpriteForCollisionLayer
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UpdateSpriteForCollisionLayer: @ 0x08016A04
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UpdateSpriteForCollisionLayer::
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movs r1, #0x38
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ldrb r1, [r0, r1]
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lsls r1, r1, #1
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@@ -69,8 +68,7 @@ UpdateSpriteForCollisionLayer: @ 0x08016A04
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_08016A28:
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.byte 0x80, 0x80, 0x80, 0x80, 0x40, 0x40, 0x40, 0x40
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thumb_func_start ResolveCollisionLayer
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ResolveCollisionLayer: @ 0x08016A30
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ResolveCollisionLayer::
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push {r4, r5, lr}
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adds r4, r0, #0
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movs r5, #0x38
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@@ -102,41 +100,51 @@ _08016A64:
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bl UpdateSpriteForCollisionLayer
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pop {r4, r5, pc}
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thumb_func_start sub_08016A6C
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sub_08016A6C: @ 0x08016A6C
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CheckOnLayerTransition::
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push {r4, r5, lr}
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adds r4, r0, #0
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bl GetActTile
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add r1, pc, #0x38
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_08016A76:
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adds r1, #4
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ldrh r2, [r1]
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bl GetActTile // tile under me
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adr r1, gTransitionTiles-4
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loop:
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adds r1, #4 // p += 4
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ldrh r2, [r1] // *(u16*)(p)
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cmp r2, #0
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beq _08016A90
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beq not_found
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cmp r2, r0
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bne _08016A76
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bne loop // found the tile under me?
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movs r2, #0x38
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ldrb r3, [r4, r2]
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ldrb r5, [r1, #2]
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cmp r3, r5
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beq _08016A90
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ldrb r5, [r1, #3]
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strb r5, [r4, r2]
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_08016A90:
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ldrb r3, [r4, r2] // collision layer
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ldrb r5, [r1, #2] // *(u8*)(p + 2)
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cmp r3, r5 // am i on the right later?
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beq not_found
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ldrb r5, [r1, #3] // *(u8*)(p + 3)
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strb r5, [r4, r2] // move to a new layer
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not_found:
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pop {r4, r5, pc}
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.align 2, 0
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_08016A94:
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.byte 0x2A, 0x00, 0x03, 0x03, 0x2D, 0x00, 0x03, 0x03, 0x2B, 0x00, 0x03, 0x03
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.byte 0x2C, 0x00, 0x03, 0x03, 0x4C, 0x00, 0x03, 0x03, 0x4E, 0x00, 0x03, 0x03, 0x4D, 0x00, 0x03, 0x03
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.byte 0x4F, 0x00, 0x03, 0x03, 0x0A, 0x00, 0x02, 0x01, 0x09, 0x00, 0x02, 0x01, 0x0C, 0x00, 0x01, 0x02
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.byte 0x0B, 0x00, 0x01, 0x02, 0x52, 0x00, 0x03, 0x03, 0x27, 0x00, 0x03, 0x03, 0x26, 0x00, 0x03, 0x03
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.byte 0x00, 0x00
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non_word_aligned_thumb_func_start sub_08016AD2
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sub_08016AD2: @ 0x08016AD2
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transition_tile 0x2A, 3, 3
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transition_tile 0x2D, 3, 3
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transition_tile 0x2B, 3, 3
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transition_tile 0x2C, 3, 3
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transition_tile 0x4C, 3, 3
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transition_tile 0x4E, 3, 3
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transition_tile 0x4D, 3, 3
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transition_tile 0x4F, 3, 3
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gTransitionTiles:
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transition_tile 0x0A, 2, 1
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transition_tile 0x09, 2, 1
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transition_tile 0x0C, 1, 2
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transition_tile 0x0B, 1, 2
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transition_tile 0x52, 3, 3
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transition_tile 0x27, 3, 3
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transition_tile 0x26, 3, 3
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.short 0x0000
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UpdateCollisionLayer::
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push {r4, lr}
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adds r4, r0, #0
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bl sub_08016A6C
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bl CheckOnLayerTransition
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push {r0}
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adds r0, r4, #0
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bl UpdateSpriteForCollisionLayer
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