mirror of https://github.com/nmlgc/ReC98.git
[Decompilation] [th05] Line sets: Rendering
With all the memmove()-style shifting of individual lines, there's probably a point to reserving 20 lines per set, but only ever rendering 4 of them. We'll see once I get to decompile all of these functions. Part of P0110, funded by [Anonymous] and Blue Bolt.
This commit is contained in:
nmlgc
parent
8cf1e74565
commit
7c4d31c02b
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@ -135,7 +135,7 @@ bin\th05\op.exe: bin\th05\op.obj th05\op_01.cpp
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$**
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bin\th05\main.exe: bin\th05\main.obj th05\p_common.cpp th05\p_reimu.cpp th05\p_marisa.cpp th05\p_mima.cpp th05\p_yuuka.cpp bin\th05\player.obj bin\th05\hud_bar.obj bin\th05\scoreupd.obj th05\main011.cpp th05\main012.cpp bin\th05\bullet.obj th05\main031.cpp th05\main032.cpp th05\main033.cpp
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bin\th05\main.exe: bin\th05\main.obj th05\main010.cpp th05\p_common.cpp th05\p_reimu.cpp th05\p_marisa.cpp th05\p_mima.cpp th05\p_yuuka.cpp bin\th05\player.obj bin\th05\hud_bar.obj bin\th05\scoreupd.obj th05\main011.cpp th05\main012.cpp bin\th05\bullet.obj th05\main031.cpp th05\main032.cpp th05\main033.cpp
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$(CC) $(CFLAGS) -ml -3 -Z -DGAME=5 -DBINARY='M' -nbin\th05\ -eMAIN.EXE @&&|
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$**
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@ -42,6 +42,10 @@ public:
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return v >> 4;
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}
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operator T() const {
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return v;
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}
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static T None() {
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return to_sp(PIXEL_NONE);
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}
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@ -0,0 +1,2 @@
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// A random shared point variable used for drawing various things.
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extern SPPoint drawpoint;
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@ -1,3 +1,2 @@
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; A random shared point variable used for drawing various things.
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public _drawpoint
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_drawpoint Point <?>
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@ -8,5 +8,9 @@ int pascal near vector2_near(
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);
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int pascal vector2_at(
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Point near &ret, int origin_x, int origin_y, int length, int angle
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SPPoint near &ret,
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subpixel_t origin_x,
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subpixel_t origin_y,
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subpixel_t length,
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int angle
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);
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@ -3,6 +3,12 @@
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* Rendering code for all bosses
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*/
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#include <master.h>
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#include "th01/math/subpixel.hpp"
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#include "th04/math/vector.hpp"
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#include "th04/main/drawp.hpp"
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#include "th04/main/playfld.h"
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/// Structures
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/// ----------
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#define BOSS_PARTICLE_COUNT 64
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@ -36,3 +42,21 @@ struct lineset_t {
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extern boss_particle_t boss_particles[BOSS_PARTICLE_COUNT];
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extern lineset_t linesets[LINESET_COUNT];
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/// ----------
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// Draws the given line out of [set] with the current GRCG tile and color.
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void pascal near grcg_lineset_line_put(lineset_t near &set, int i)
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{
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vector2_at(drawpoint,
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set.center[i].x, set.center[i].y, set.radius[i], set.angle[i]
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);
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int x1 = (PLAYFIELD_X + drawpoint.x.to_screen());
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int y1 = (PLAYFIELD_Y + drawpoint.y.to_screen());
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vector2_at(drawpoint,
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set.center[i].x, set.center[i].y, set.radius[i], (set.angle[i] + 0x80)
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);
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int x2 = (PLAYFIELD_X + drawpoint.x.to_screen());
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int y2 = (PLAYFIELD_Y + drawpoint.y.to_screen());
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grcg_line(x1, y1, x2, y2);
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}
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@ -0,0 +1,10 @@
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/* ReC98
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* -----
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* 1st part of code segment #1 of TH05's MAIN.EXE
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*/
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#pragma codeseg main__TEXT main_01
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extern "C" {
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#include "th05/main/boss/render.cpp"
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}
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172
th05_main.asm
172
th05_main.asm
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@ -4026,83 +4026,13 @@ loc_D4F4:
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leave
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retn
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sub_D3C6 endp
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GRCG_LINESET_LINE_PUT procdesc pascal near \
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set:near ptr, i:word
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main__TEXT ends
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main_0_TEXT segment word 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_D4F8 proc near
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var_8 = word ptr -8
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var_6 = word ptr -6
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var_4 = word ptr -4
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var_2 = word ptr -2
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arg_0 = word ptr 4
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arg_2 = word ptr 6
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enter 8, 0
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push si
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push di
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mov si, [bp+arg_2]
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mov di, [bp+arg_0]
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push offset _drawpoint
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mov bx, di
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shl bx, 2
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push [bx+si+lineset_t.LS_center.x]
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mov bx, di
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shl bx, 2
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push [bx+si+lineset_t.LS_center.y]
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mov bx, di
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add bx, bx
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push [bx+si+lineset_t.LS_radius]
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mov bx, di
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mov al, [bx+si+lineset_t.LS_angle]
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mov ah, 0
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push ax
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call vector2_at
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mov ax, _drawpoint.x
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sar ax, 4
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add ax, 32
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mov [bp+var_2], ax
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mov ax, _drawpoint.y
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sar ax, 4
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add ax, 16
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mov [bp+var_4], ax
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push offset _drawpoint
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mov bx, di
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shl bx, 2
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push [bx+si+lineset_t.LS_center.x]
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mov bx, di
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shl bx, 2
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push [bx+si+lineset_t.LS_center.y]
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mov bx, di
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add bx, bx
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push [bx+si+lineset_t.LS_radius]
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mov bx, di
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mov al, [bx+si+lineset_t.LS_angle]
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mov ah, 0
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add ax, 80h
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push ax
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call vector2_at
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mov ax, _drawpoint.x
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sar ax, 4
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add ax, 32
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mov [bp+var_6], ax
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mov ax, _drawpoint.y
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sar ax, 4
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add ax, 16
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mov [bp+var_8], ax
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call grcg_line pascal, [bp+var_2], [bp+var_4], [bp+var_6], ax
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pop di
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pop si
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leave
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retn 4
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sub_D4F8 endp
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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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@ -4201,34 +4131,18 @@ loc_D630:
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mov ah, GC_BRG
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call _grcg_setcolor_direct_seg1_raw
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call sub_D327
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push offset lineset0
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push 12h
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call sub_D4F8
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push offset lineset0
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push 0Ch
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call sub_D4F8
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push offset lineset1
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push 12h
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call sub_D4F8
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push offset lineset1
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push 0Ch
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 18
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call grcg_lineset_line_put pascal, offset lineset0, 12
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call grcg_lineset_line_put pascal, offset lineset1, 18
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call grcg_lineset_line_put pascal, offset lineset1, 12
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mov ah, GC_RG
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call _grcg_setcolor_direct_seg1_raw
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push offset lineset0
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push 6
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call sub_D4F8
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push offset lineset1
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push 6
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 6
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call grcg_lineset_line_put pascal, offset lineset1, 6
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mov ah, 0Fh
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call _grcg_setcolor_direct_seg1_raw
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push offset lineset0
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push 0
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call sub_D4F8
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push offset lineset1
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push 0
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 0
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call grcg_lineset_line_put pascal, offset lineset1, 0
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GRCG_OFF_CLOBBERING dx
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pop di
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pop si
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@ -4462,34 +4376,18 @@ loc_D82E:
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mov ah, GC_BRG
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call _grcg_setcolor_direct_seg1_raw
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call sub_D327
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push offset lineset0
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push 12h
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call sub_D4F8
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push offset lineset0
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push 0Ch
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call sub_D4F8
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push offset lineset1
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push 12h
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call sub_D4F8
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push offset lineset1
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push 0Ch
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 18
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call grcg_lineset_line_put pascal, offset lineset0, 12
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call grcg_lineset_line_put pascal, offset lineset1, 18
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call grcg_lineset_line_put pascal, offset lineset1, 12
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mov ah, GC_RG
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call _grcg_setcolor_direct_seg1_raw
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push offset lineset0
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push 6
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call sub_D4F8
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push offset lineset1
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push 6
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 6
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call grcg_lineset_line_put pascal, offset lineset1, 6
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mov ah, 0Fh
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call _grcg_setcolor_direct_seg1_raw
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push offset lineset0
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push 0
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call sub_D4F8
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push offset lineset1
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push 0
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 0
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call grcg_lineset_line_put pascal, offset lineset1, 0
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GRCG_OFF_CLOBBERING dx
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pop di
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pop si
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@ -4688,34 +4586,18 @@ loc_D9C6:
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mov ah, GC_BRG
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call _grcg_setcolor_direct_seg1_raw
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call sub_D327
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push offset lineset0
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push 12h
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call sub_D4F8
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push offset lineset0
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push 0Ch
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call sub_D4F8
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push offset lineset1
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push 12h
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call sub_D4F8
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push offset lineset1
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push 0Ch
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 18
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call grcg_lineset_line_put pascal, offset lineset0, 12
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call grcg_lineset_line_put pascal, offset lineset1, 18
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call grcg_lineset_line_put pascal, offset lineset1, 12
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mov ah, GC_RG
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call _grcg_setcolor_direct_seg1_raw
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push offset lineset0
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push 6
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call sub_D4F8
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push offset lineset1
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push 6
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 6
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call grcg_lineset_line_put pascal, offset lineset1, 6
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mov ah, 0Fh
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call _grcg_setcolor_direct_seg1_raw
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push offset lineset0
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push 0
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call sub_D4F8
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push offset lineset1
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push 0
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call sub_D4F8
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call grcg_lineset_line_put pascal, offset lineset0, 0
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call grcg_lineset_line_put pascal, offset lineset1, 0
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GRCG_OFF_CLOBBERING dx
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pop di
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pop si
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