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ReC98/th01/main/boss/entity_a.inc

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[Reverse-engineering] [th01] Boss entity classes What else to call something a boss can have multiple of, that may or may not be part of a larger boss sprite, may or may not be animated, and that may or may not have a orb hitbox? Needed to be RE'd before the .BOS loading functions, because those are actually methods of this class. And because renaming all these variables in ASM land is tedious anyway, we might as well name each individual entity of every boss. Still, what's with the pointless local variable copies in the YuugenMagan and Kikuri functions? Part of P0106, funded by Yanga.
2020-08-04 17:36:33 +00:00
CBossEntity struc
BE_cur_left dw ?
BE_cur_top dw ?
BE_prev_left dw ?
BE_prev_top dw ?
BE_vram_w dw ?
BE_h dw ?
BE_move_clamp area_t <?>
BE_hitbox_orb area_t <?>
BE_prev_delta_y dw ?
BE_prev_delta_x dw ?
BE_bos_image_count dw ?
BE_zero_1 dw ?
BE_bos_image dw ?
BE_unknown dw ?
BE_hitbox_orb_inactive dw ?
BE_loading dw ?
BE_move_lock_frame dw ?
BE_zero_2 dw ?
BE_zero_3 db ?
BE_bos_slot db ?
CBossEntity ends
copy16 macro dst:req, src:req, member:req
mov ax, src.member
mov dst.member, ax
endm
copy8 macro dst:req, src:req, member:req
mov al, src.member
mov dst.member, al
endm
area_t__copy macro dst:req, src:req
copy16 dst, src, A_left
copy16 dst, src, A_right
copy16 dst, src, A_top
copy16 dst, src, A_bottom
endm
CBossEntity__ctor macro that:req
mov that.BE_loading, 0
mov that.BE_zero_3, 0
endm
CBossEntity__copy macro dst:req, src:req
copy16 dst, src, BE_cur_left
copy16 dst, src, BE_cur_top
copy16 dst, src, BE_prev_left
copy16 dst, src, BE_prev_top
copy16 dst, src, BE_vram_w
copy16 dst, src, BE_h
area_t__copy dst.BE_move_clamp, src.BE_move_clamp
area_t__copy dst.BE_hitbox_orb, src.BE_hitbox_orb
copy16 dst, src, BE_prev_delta_y
copy16 dst, src, BE_prev_delta_x
copy16 dst, src, BE_bos_image_count
copy16 dst, src, BE_zero_1
copy16 dst, src, BE_bos_image
copy16 dst, src, BE_unknown
copy16 dst, src, BE_hitbox_orb_inactive
copy16 dst, src, BE_loading
copy16 dst, src, BE_move_lock_frame
copy16 dst, src, BE_zero_2
copy8 dst, src, BE_zero_3
copy8 dst, src, BE_bos_slot
endm
[Maintenance] [th01] Clearly distinguish entity and animation .BOS slots … now that we have a better idea about the differences of both classes. Also, no transitive dependency on bos.hpp for either class. Part of P0120, funded by Yanga.
2020-09-23 21:28:50 +00:00
CBossEntity__load macro that:req, slot:req, fn:req
[Decompilation] [th01] Boss entities: .BOS load function "Hm, I have this format that specifies sprite width in multiples of 8, but *actually*, I'd like to blit 16 pixels at a time… well, time to pepper the code with divisions and casts, I guess :zunpet:" Which becomes even more hilarious once you realize that the `operator new` function does require bytes after all. Which leads new dots16_t[image_size / 2]; to compile to operator new((image_size / 2) * 2); :tannedcirno: Part of P0106, funded by Yanga.
2020-08-05 11:30:55 +00:00
mov that.BE_loading, 1
[Decompilation] [th01] Boss entities: Outer loading function ASM land had a macro for this, which suggested a corresponding inlined class method in C++ land. We couldn't use that macro for Konngara's third boss entity though. So I probably wanted to wait with that inline function until the decompilation of that Konngara load call, which could verify the existence of said inline function. And it did! Part of P0141, funded by [Anonymous] and rosenrose.
2021-05-16 18:02:24 +00:00
call @CBossEntity@load_inner$qxnxci stdcall, offset that, ds, offset fn, ds, slot
[Decompilation] [th01] Boss entities: .BOS load function "Hm, I have this format that specifies sprite width in multiples of 8, but *actually*, I'd like to blit 16 pixels at a time… well, time to pepper the code with divisions and casts, I guess :zunpet:" Which becomes even more hilarious once you realize that the `operator new` function does require bytes after all. Which leads new dots16_t[image_size / 2]; to compile to operator new((image_size / 2) * 2); :tannedcirno: Part of P0106, funded by Yanga.
2020-08-05 11:30:55 +00:00
mov that.BE_loading, 0
endm
[Reverse-engineering] [th01] Boss entity classes What else to call something a boss can have multiple of, that may or may not be part of a larger boss sprite, may or may not be animated, and that may or may not have a orb hitbox? Needed to be RE'd before the .BOS loading functions, because those are actually methods of this class. And because renaming all these variables in ASM land is tedious anyway, we might as well name each individual entity of every boss. Still, what's with the pointless local variable copies in the YuugenMagan and Kikuri functions? Part of P0106, funded by Yanga.
2020-08-04 17:36:33 +00:00
CBossEntity__hitbox_set macro that:req, left:req, top:req, right:req, bottom:req
mov that.BE_hitbox_orb.A_left, left
mov that.BE_hitbox_orb.A_right, right
mov that.BE_hitbox_orb.A_top, top
mov that.BE_hitbox_orb.A_bottom, bottom
endm