mirror of https://github.com/nmlgc/ReC98.git
[Decompilation] [th01] Player shots: Reset function
Why the sloppyness of unblitting a whole 16×16 rectangle *if you have a dedicated function to precisely unblit a .PTN sprite using its alpha mask*??? Oh well, it's not the regular function called in the main loop, so who cares…? Part of P0098, funded by Yanga.
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nmlgc
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@ -1,7 +1,15 @@
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#include "th01/snd/mdrv2.h"
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#include "th01/formats/ptn.hpp"
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#include "th01/hardware/egc.h"
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#include "th01/main/playfld.hpp"
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#include "th01/main/player/shots.hpp"
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static const int SHOT_W = PTN_QUARTER_W;
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static const int SHOT_H = PTN_QUARTER_H;
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#define sloppy_unput(i) \
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egc_copy_rect_1_to_0(left[i], top[i], SHOT_W, SHOT_H);
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void CShots::add(int new_left, int new_top)
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{
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if(new_left < PLAYFIELD_LEFT || new_left > (PLAYFIELD_RIGHT - 1)) {
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@ -22,3 +30,18 @@ void CShots::add(int new_left, int new_top)
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return;
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}
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}
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void CShots::unput_and_reset_all(void)
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{
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for(int i = 0; i < SHOT_COUNT; i++) {
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if(moving[i]) {
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sloppy_unput(i);
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moving[i] = false;
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} else if(decay_frame[i]) {
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sloppy_unput(i);
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decay_frame[i] = false;
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}
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}
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}
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#undef sloppy_unput
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@ -10,6 +10,7 @@ struct CShots {
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unsigned char decay_frame[SHOT_COUNT];
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void add(int new_left, int new_top);
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void unput_and_reset_all(void);
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};
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extern CShots Shots;
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@ -8,6 +8,7 @@
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extern "C" {
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#include "platform.h"
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#include "pc98.h"
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#include "planar.h"
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#include "th01/main/player/shots.cpp"
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}
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@ -3501,7 +3501,7 @@ loc_D7E4:
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push offset unk_37635
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call sub_30DEE
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add sp, 4
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call CShots_2FCAD c, offset _Shots, ds
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call @CShots@unput_and_reset_all$qv c, offset _Shots, ds
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mov word ptr [bp+s1+2], ds
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mov word ptr [bp+s1], 1250h
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mov byte_34ADF, 0
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@ -4408,7 +4408,7 @@ loc_E224:
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loc_E244:
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inc si
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call sub_CE5C
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call CShots_2FCAD c, offset _Shots, ds
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call @CShots@unput_and_reset_all$qv c, offset _Shots, ds
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push ds
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push offset unk_37635
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call sub_30DEE
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@ -7567,7 +7567,7 @@ arg_0 = word ptr 6
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enter 6, 0
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push si
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push di
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call CShots_2FCAD c, offset _Shots, ds
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call @CShots@unput_and_reset_all$qv c, offset _Shots, ds
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push ds
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push offset unk_37635
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call sub_30DEE
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@ -18563,7 +18563,7 @@ loc_1AE85:
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push ax
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call _egc_copy_rect_1_to_0
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add sp, 8
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call CShots_2FCAD c, offset _Shots, ds
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call @CShots@unput_and_reset_all$qv c, offset _Shots, ds
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push ds
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push offset unk_37635
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call sub_30E54
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@ -49271,7 +49271,7 @@ loc_2C835:
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jnz loc_2CAA8
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mov word_3A6CA, 0
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mov word_3B433, 18Fh
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call CShots_2FCAD c, offset _Shots, ds
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call @CShots@unput_and_reset_all$qv c, offset _Shots, ds
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push ds
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push offset unk_37635
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call sub_30DEE
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@ -54631,71 +54631,7 @@ main_38__TEXT segment byte public 'CODE' use16
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assume es:nothing, ss:nothing, ds:_DATA, fs:nothing, gs:nothing
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extern @CShots@add$qii:proc
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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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CShots_2FCAD proc far
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@@CShots = dword ptr 6
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push bp
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mov bp, sp
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push si
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xor si, si
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jmp short loc_2FD20
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; ---------------------------------------------------------------------------
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loc_2FCB5:
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les bx, [bp+@@CShots]
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add bx, si
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cmp es:[bx+CShots.SHOT_moving], 0
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jz short loc_2FCEB
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push (16 shl 16) or 16
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mov ax, si
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add ax, ax
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mov bx, word ptr [bp+@@CShots]
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add bx, ax
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push es:[bx+CShots.SHOT_top]
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push es:[bx+CShots.SHOT_left]
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call _egc_copy_rect_1_to_0
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add sp, 8
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les bx, [bp+@@CShots]
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add bx, si
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mov es:[bx+CShots.SHOT_moving], 0
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jmp short loc_2FD1F
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; ---------------------------------------------------------------------------
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loc_2FCEB:
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les bx, [bp+@@CShots]
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add bx, si
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cmp es:[bx+CShots.SHOT_decay_frame], 0
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jz short loc_2FD1F
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push (16 shl 16) or 16
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mov ax, si
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add ax, ax
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mov bx, word ptr [bp+@@CShots]
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add bx, ax
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push es:[bx+CShots.SHOT_top]
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push es:[bx+CShots.SHOT_left]
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call _egc_copy_rect_1_to_0
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add sp, 8
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les bx, [bp+@@CShots]
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add bx, si
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mov es:[bx+CShots.SHOT_decay_frame], 0
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loc_2FD1F:
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inc si
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loc_2FD20:
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cmp si, SHOT_COUNT
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jl short loc_2FCB5
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pop si
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pop bp
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retf
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CShots_2FCAD endp
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extern @CShots@unput_and_reset_all$qv:proc
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; =============== S U B R O U T I N E =======================================
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