1 /* Copyright (C) 1996-1997 Aleksey Volynskov
2 * Copyright (C) 2011 Rambo
3 * Copyright (C) 2020 SovietPony
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 3 of the License ONLY.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "common/endianness.h"
34 char fullscreen
= OFF
;
37 byte mixmap
[256][256];
41 int buf_w
, buf_h
, pitch
;
42 static int offx
, offy
;
43 static int cx1
, cx2
, cy1
, cy2
;
44 static byte flametab
[16] = {
45 0xBC,0xBA,0xB8,0xB6,0xB4,0xB2,0xB0,0xD5,0xD6,0xD7,0xA1,0xA0,0xE3,0xE2,0xE1,0xE0
48 vgaimg
*V_getvgaimg (int id
) {
49 int loaded
= M_was_locked(id
);
50 vgaimg
*v
= M_lock(id
);
51 if (v
!= NULL
&& !loaded
) {
52 v
->w
= short2host(v
->w
);
53 v
->h
= short2host(v
->h
);
54 v
->sx
= short2host(v
->sx
);
55 v
->sy
= short2host(v
->sy
);
60 vgaimg
*V_loadvgaimg (char *name
) {
61 return V_getvgaimg(F_getresid(name
));
64 void V_update_buffer (void) {
65 Y_get_buffer(&buffer
, &buf_w
, &buf_h
, &pitch
);
66 V_setrect(0, 0, buf_w
, buf_h
);
69 static void draw_rect (int x
, int y
, int w
, int h
, int c
) {
73 int x1
= min(x
+ w
- 1, cx2
);
74 int y1
= min(y
+ h
- 1, cy2
);
76 for (i
= y0
; i
<= y1
; i
++) {
77 memset(&buffer
[i
* pitch
+ x0
], c
, len
);
81 void V_setrect (short x
, short w
, short y
, short h
) {
85 cx2
= min(x
+ w
- 1, buf_w
- 1);
87 cy2
= min(y
+ h
- 1, buf_h
- 1);
90 static void putpixel (int x
, int y
, byte color
) {
91 if (x
>= cx1
&& x
<= cx2
&& y
>= cy1
&& y
<= cy2
) {
92 buffer
[y
* pitch
+ x
] = color
;
96 static byte
getpixel (int x
, int y
) {
97 return x
>= cx1
&& x
<= cx2
&& y
>= cy1
&& y
<= cy2
? buffer
[y
* pitch
+ x
] : 0;
100 static void mappixel (int x
, int y
, byte
*cmap
) {
101 byte c
= getpixel(x
, y
);
102 putpixel(x
, y
, cmap
[c
]);
105 void V_center (int f
) {
107 V_offset(buf_w
/ 2 - 320 / 2, buf_h
/ 2 - 200 / 2);
113 void V_offset (int ox
, int oy
) {
118 static void draw_spr (short x
, short y
, vgaimg
*i
, int d
, int c
) {
122 if (d
& 1) x
=x
-i
->w
+i
->sx
; else x
-=i
->sx
;
123 if (d
& 2) y
=y
-i
->h
+i
->sy
; else y
-=i
->sy
;
124 if(x
+i
->w
>=cx1
&& x
<=cx2
&& y
+i
->h
>=cy1
&& y
<=cy2
) {
126 byte
*p
= (byte
*)i
+ sizeof(vgaimg
);
127 for (ly
=0; ly
<i
->h
; ly
++) {
128 for(lx
=0; lx
<i
->w
; lx
++) {
130 rx
= (d
& 1) ? (i
->w
-lx
-1) : (lx
);
131 ry
= (d
& 2) ? (i
->h
-ly
-1) : (ly
);
134 if (c
) if (t
>=0x70 && t
<=0x7F) t
=t
-0x70+c
;
135 putpixel(x
+rx
,y
+ry
,t
);
143 void V_rotspr (int x
, int y
, vgaimg
* i
, int d
) {
149 void V_pic (short x
, short y
, vgaimg
*i
) {
150 draw_spr(x
, y
, i
, 0, 0);
153 void V_manspr (int x
, int y
, void *p
, unsigned char c
) {
154 draw_spr(x
, y
, p
, 0, c
);
157 void V_manspr2(int x
,int y
,void *p
, unsigned char c
) {
158 draw_spr(x
, y
, p
, 1, c
);
161 void V_dot (short x
, short y
, unsigned char c
) {
165 void smoke_sprf (int x
, int y
, byte c
) {
166 byte t
= getpixel(x
,y
);
170 putpixel(x
,y
,mixmap
[c
][t
]);
173 void flame_sprf (int x
, int y
, byte c
) {
174 byte t
= getpixel(x
,y
);
176 putpixel(x
,y
,flametab
[c
]);
179 void V_sprf (short x
,short y
,vgaimg
*i
,spr_f
*f
) {
186 for (cy
=y
; cy
<y
+i
->h
; cy
++) {
187 for(cx
=x
; cx
<x
+i
->w
; cx
++) {
196 void V_spr (short x
, short y
, vgaimg
*i
) {
197 draw_spr(x
, y
, i
, 0, 0);
200 void V_spr2 (short x
, short y
, vgaimg
*i
) {
204 void V_clr (short x
, short w
, short y
, short h
, unsigned char c
) {
205 draw_rect(x
, y
, w
, h
, c
);
208 void V_setscr (void *p
) {
212 void V_copytoscr (short x
, short w
, short y
, short h
) {
213 Y_repaint_rect(x
, y
, w
, h
);
216 void V_maptoscr (int x
, int w
, int y
, int h
, void *cmap
) {
218 for (cx
=x
; cx
<x
+w
; cx
++)
219 for (cy
=y
; cy
<y
+h
; cy
++)
220 mappixel(cx
,cy
,(byte
*)cmap
);
221 V_copytoscr(x
,w
,y
,h
);
224 void V_remap_rect (int x
, int y
, int w
, int h
, byte
*cmap
) {
226 for (cx
=x
; cx
<x
+w
; cx
++)
227 for (cy
=y
; cy
<y
+h
; cy
++)
228 mappixel(cx
,cy
,cmap
);