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/>.
32 char fullscreen
= OFF
;
35 byte mixmap
[256][256];
39 int buf_w
, buf_h
, pitch
;
40 static int offx
, offy
;
41 static int cx1
, cx2
, cy1
, cy2
;
42 static byte flametab
[16] = {
43 0xBC,0xBA,0xB8,0xB6,0xB4,0xB2,0xB0,0xD5,0xD6,0xD7,0xA1,0xA0,0xE3,0xE2,0xE1,0xE0
46 vgaimg
*V_getvgaimg (int id
) {
47 int loaded
= M_was_locked(id
);
48 vgaimg
*v
= M_lock(id
);
49 if (v
!= NULL
&& !loaded
) {
50 v
->w
= short2host(v
->w
);
51 v
->h
= short2host(v
->h
);
52 v
->sx
= short2host(v
->sx
);
53 v
->sy
= short2host(v
->sy
);
58 vgaimg
*V_loadvgaimg (char *name
) {
59 return V_getvgaimg(F_getresid(name
));
62 void V_update_buffer (void) {
63 Y_get_buffer(&buffer
, &buf_w
, &buf_h
, &pitch
);
64 V_setrect(0, 0, buf_w
, buf_h
);
67 static void draw_rect (int x
, int y
, int w
, int h
, int c
) {
71 int x1
= min(x
+ w
- 1, cx2
);
72 int y1
= min(y
+ h
- 1, cy2
);
74 for (i
= y0
; i
<= y1
; i
++) {
75 memset(&buffer
[i
* pitch
+ x0
], c
, len
);
79 void V_setrect (short x
, short w
, short y
, short h
) {
83 cx2
= min(x
+ w
- 1, buf_w
- 1);
85 cy2
= min(y
+ h
- 1, buf_h
- 1);
88 static void putpixel (int x
, int y
, byte color
) {
89 if (x
>= cx1
&& x
<= cx2
&& y
>= cy1
&& y
<= cy2
) {
90 buffer
[y
* pitch
+ x
] = color
;
94 static byte
getpixel (int x
, int y
) {
95 return x
>= cx1
&& x
<= cx2
&& y
>= cy1
&& y
<= cy2
? buffer
[y
* pitch
+ x
] : 0;
98 static void mappixel (int x
, int y
, byte
*cmap
) {
99 byte c
= getpixel(x
, y
);
100 putpixel(x
, y
, cmap
[c
]);
103 void V_center (int f
) {
105 V_offset(buf_w
/ 2 - 320 / 2, buf_h
/ 2 - 200 / 2);
111 void V_offset (int ox
, int oy
) {
116 static void draw_spr (short x
, short y
, vgaimg
*i
, int d
, int c
) {
120 if (d
& 1) x
=x
-i
->w
+i
->sx
; else x
-=i
->sx
;
121 if (d
& 2) y
=y
-i
->h
+i
->sy
; else y
-=i
->sy
;
122 if(x
+i
->w
>=cx1
&& x
<=cx2
&& y
+i
->h
>=cy1
&& y
<=cy2
) {
124 byte
*p
= (byte
*)i
+ sizeof(vgaimg
);
125 for (ly
=0; ly
<i
->h
; ly
++) {
126 for(lx
=0; lx
<i
->w
; lx
++) {
128 rx
= (d
& 1) ? (i
->w
-lx
-1) : (lx
);
129 ry
= (d
& 2) ? (i
->h
-ly
-1) : (ly
);
132 if (c
) if (t
>=0x70 && t
<=0x7F) t
=t
-0x70+c
;
133 putpixel(x
+rx
,y
+ry
,t
);
141 void V_rotspr (int x
, int y
, vgaimg
* i
, int d
) {
147 void V_pic (short x
, short y
, vgaimg
*i
) {
148 draw_spr(x
, y
, i
, 0, 0);
151 void V_manspr (int x
, int y
, void *p
, unsigned char c
) {
152 draw_spr(x
, y
, p
, 0, c
);
155 void V_manspr2(int x
,int y
,void *p
, unsigned char c
) {
156 draw_spr(x
, y
, p
, 1, c
);
159 void V_dot (short x
, short y
, unsigned char c
) {
163 void smoke_sprf (int x
, int y
, byte c
) {
164 byte t
= getpixel(x
,y
);
168 putpixel(x
,y
,mixmap
[c
][t
]);
171 void flame_sprf (int x
, int y
, byte c
) {
172 byte t
= getpixel(x
,y
);
174 putpixel(x
,y
,flametab
[c
]);
177 void V_sprf (short x
,short y
,vgaimg
*i
,spr_f
*f
) {
184 for (cy
=y
; cy
<y
+i
->h
; cy
++) {
185 for(cx
=x
; cx
<x
+i
->w
; cx
++) {
194 void V_spr (short x
, short y
, vgaimg
*i
) {
195 draw_spr(x
, y
, i
, 0, 0);
198 void V_spr2 (short x
, short y
, vgaimg
*i
) {
202 void V_clr (short x
, short w
, short y
, short h
, unsigned char c
) {
203 draw_rect(x
, y
, w
, h
, c
);
206 void V_setscr (void *p
) {
210 void V_copytoscr (short x
, short w
, short y
, short h
) {
211 Y_repaint_rect(x
, y
, w
, h
);
214 void V_maptoscr (int x
, int w
, int y
, int h
, void *cmap
) {
216 for (cx
=x
; cx
<x
+w
; cx
++)
217 for (cy
=y
; cy
<y
+h
; cy
++)
218 mappixel(cx
,cy
,(byte
*)cmap
);
219 V_copytoscr(x
,w
,y
,h
);
222 void V_remap_rect (int x
, int y
, int w
, int h
, byte
*cmap
) {
224 for (cx
=x
; cx
<x
+w
; cx
++)
225 for (cy
=y
; cy
<y
+h
; cy
++)
226 mappixel(cx
,cy
,cmap
);