mirror of https://github.com/nmlgc/ReC98.git
[Decompilation] [th04] EMS / Dialog: Exit function
That's where TH04 crashes in Stage 5 without an EMS driver, but the code is fine?! (Well, apart from its silly behavior in the Extra Stage.) Part of P0169, funded by Blue Bolt.
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nmlgc
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7673456ab3
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@ -7,7 +7,9 @@ extern "C" {
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#include "planar.h"
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#include "master.hpp"
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#include "th03/formats/cdg.h"
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#include "th04/common.h"
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#include "th04/main/playfld.hpp"
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#include "th04/main/stage/stage.hpp"
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#include "th04/sprites/main_cdg.h"
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}
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#include "th04/shiftjis/fns.hpp"
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@ -47,3 +49,46 @@ void near dialog_init(void)
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main_cdg_load_faceset_playchar();
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}
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}
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void near dialog_exit(void)
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{
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#undef BOMB_BG_REIMU_FN
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#undef BOMB_BG_MARISA_FN
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#undef FACESET_MUGETSU_DEFEAT_FN
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#undef FACESET_GENGETSU_DEFEAT_FN
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extern const char BOMB_BG_REIMU_FN[];
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extern const char BOMB_BG_MARISA_FN[];
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extern const char FACESET_MUGETSU_DEFEAT_FN[];
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extern const char FACESET_GENGETSU_DEFEAT_FN[];
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int i;
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for(i = CDG_FACESET_PLAYCHAR; i < (CDG_FACESET_PLAYCHAR_last + 1); i++) {
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cdg_free(i);
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}
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if(stage_id == STAGE_EXTRA) {
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// MODDERS: This assumes that BSS6.CD2, BSS7.CD2, and BSS8.CD2 each
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// have at most 3 slots, rather than up to FACESET_BOSS_COUNT.
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for(i = CDG_FACESET_BOSS; i < (CDG_FACESET_BOSS + 3); i++) {
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cdg_free(i);
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}
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// What's a function parameter? :zunpet:
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extern uint8_t number_of_calls_to_this_function_during_extra;
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if((number_of_calls_to_this_function_during_extra++) == 0) {
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cdg_load_all(CDG_FACESET_BOSS, FACESET_MUGETSU_DEFEAT_FN);
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} else {
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cdg_load_all(CDG_FACESET_BOSS, FACESET_GENGETSU_DEFEAT_FN);
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}
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}
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if(Ems) {
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playchar_bomb_bg_load_from_ems();
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} else {
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if(playchar == PLAYCHAR_REIMU) {
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cdg_load_single_noalpha(CDG_BG_PLAYCHAR_BOMB, BOMB_BG_REIMU_FN, 0);
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} else {
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cdg_load_single_noalpha(CDG_BG_PLAYCHAR_BOMB, BOMB_BG_MARISA_FN, 0);
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}
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}
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}
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@ -39,5 +39,14 @@ void pascal near dialog_face_unput_8(uscreen_x_t left, uvram_y_t top);
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// faceset), freeing any images that aren't used during a dialog (i.e.,
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// the bomb background) in exchange for the necessary conventional memory.
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void near dialog_init(void);
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// Restores the bomb background image, after freeing any dialog-only images
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// (i.e., the player character faceset) in exchange for the necessary
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// conventional memory.
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// Apparently, this was also the most convenient place to load the boss
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// faceset used for both the Mugetsu defeat / Gengetsu entrance dialog and
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// the Gengetsu defeat dialogue? To differentiate between those two, the
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// function tracks how often it has been called during the Extra Stage.
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void near dialog_exit(void);
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// --------------------------------------------------------
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#endif
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@ -78,5 +78,15 @@ void near eyecatch_animate(void);
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reinterpret_cast<void __seg *>(dst_seg) = hmem_allocbyte(size); \
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ems_read(Ems, src_off, dst_seg, size); \
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}
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// Assumes [Ems] to be non-NULL.
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inline void playchar_bomb_bg_load_from_ems(void) {
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size_t size = (cdg_slots[CDG_BG_PLAYCHAR_BOMB].bitplane_size * PLANE_COUNT);
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allocate_and_load_from_ems(
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cdg_slots[CDG_BG_PLAYCHAR_BOMB].seg_colors(),
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EMS_PLAYCHAR_BOMB_BG_OFFSET,
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size
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);
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}
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// ----------------
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/// --------------
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116
th04_main.asm
116
th04_main.asm
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@ -3251,7 +3251,7 @@ sub_D6EB proc far
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call main_01:sub_D56C
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push 2
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nopcall main_01:sub_CBA4
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call main_01:sub_D7EE
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call @dialog_exit$qv
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graph_accesspage _page_back
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push 1
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call frame_delay
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@ -3262,107 +3262,10 @@ main_TEXT ends
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DIALOG_TEXT segment byte public 'CODE' use16
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@dialog_init$qv procdesc near
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@dialog_exit$qv procdesc near
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DIALOG_TEXT ends
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main__TEXT segment byte public 'CODE' use16
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; =============== S U B R O U T I N E =======================================
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; Attributes: bp-based frame
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sub_D7EE proc near
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push bp
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mov bp, sp
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push si
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push di
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mov si, CDG_FACESET_PLAYCHAR
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jmp short loc_D7FF
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; ---------------------------------------------------------------------------
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loc_D7F8:
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call cdg_free pascal, si
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inc si
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loc_D7FF:
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cmp si, (CDG_FACESET_PLAYCHAR_last + 1)
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jl short loc_D7F8
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cmp _stage_id, 6
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jnz short loc_D83A
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mov si, CDG_FACESET_BOSS
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jmp short loc_D817
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; ---------------------------------------------------------------------------
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loc_D810:
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call cdg_free pascal, si
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inc si
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loc_D817:
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; MODDERS: This assumes that BSS6.CD2, BSS7.CD2, and BSS8.CD2 each have
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; at most 3 slots.
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cmp si, (CDG_FACESET_BOSS + 3)
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jl short loc_D810
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mov al, byte_22BCA
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inc byte_22BCA
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or al, al
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jnz short loc_D82F
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push CDG_FACESET_BOSS
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push ds
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push offset aBss7_cd2 ; "bss7.cd2"
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jmp short loc_D835
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; ---------------------------------------------------------------------------
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loc_D82F:
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push CDG_FACESET_BOSS
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push ds
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push offset aBss8_cd2 ; "bss8.cd2"
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loc_D835:
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call cdg_load_all
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loc_D83A:
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cmp _Ems, 0
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jz short loc_D86C
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mov ax, _cdg_slots.CDG_plane_size + (size cdg_t * 0)
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shl ax, 2
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mov di, ax
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push ax
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call hmem_allocbyte
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mov _cdg_slots.seg_colors + (size cdg_t * 0), ax
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push _Ems
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pushd 34000
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push ax
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push 0
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movzx eax, di
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push eax
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call ems_read
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jmp short loc_D888
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; ---------------------------------------------------------------------------
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loc_D86C:
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cmp _playchar, PLAYCHAR_REIMU
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jnz short loc_D87B
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push CDG_BG_PLAYCHAR_BOMB
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push ds
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push offset aBb0_cdg ; "bb0.cdg"
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jmp short loc_D881
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; ---------------------------------------------------------------------------
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loc_D87B:
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push CDG_BG_PLAYCHAR_BOMB
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push ds
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push offset aBb1_cdg ; "bb1.cdg"
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loc_D881:
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push 0
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call cdg_load_single_noalpha
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loc_D888:
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pop di
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pop si
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pop bp
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retn
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sub_D7EE endp
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include th04/main/boss/explosions_small.asm
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include th04/main/boss/explosions_big.asm
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@ -32844,18 +32747,21 @@ off_22BAA dd a_dm00_txt
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off_22BAE dd a_dm04b_txt
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; "_DM04B.txt"
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include th04/main/dialog/dialog[data].asm
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byte_22BCA db 0
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public _number_of_calls_to_this_function
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_number_of_calls_to_this_function db 0
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a_dm00_txt db '_DM00.TXT',0
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a_dm04b_txt db '_DM04B.txt',0
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public _dialog_kanji_buf, _FACESET_REIMU_FN_1, _FACESET_MARISA_FN_1
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_dialog_kanji_buf db ' ',0
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_FACESET_REIMU_FN_1 db 'KAO0.cd2',0
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_FACESET_MARISA_FN_1 db 'KAO1.cd2',0
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aBss7_cd2 db 'bss7.cd2',0
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aBss8_cd2 db 'bss8.cd2',0
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aBb0_cdg db 'bb0.cdg',0
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aBb1_cdg db 'bb1.cdg',0
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db 0
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public _FACESET_MUGETSU_DEFEAT_FN, _FACESET_GENGETSU_DEFEAT_FN
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public _BOMB_BG_REIMU_FN, _BOMB_BG_MARISA_FN
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_FACESET_MUGETSU_DEFEAT_FN db 'bss7.cd2',0
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_FACESET_GENGETSU_DEFEAT_FN db 'bss8.cd2',0
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_BOMB_BG_REIMU_FN db 'bb0.cdg',0
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_BOMB_BG_MARISA_FN db 'bb1.cdg',0
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evendata
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include th04/main/boss/explosions_big[data].asm
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byte_22C1A db 0
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db 0
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