tsiry-sandratraina.com
A modern Music Player Daemon based on Rockbox open source high quality audio player
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/*
2 * xrick/scroller.c
3 *
4 * Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net).
5 * Copyright (C) 2008-2014 Pierluigi Vicinanza.
6 * All rights reserved.
7 *
8 * The use and distribution terms for this software are contained in the file
9 * named README, which can be found in the root of this distribution. By
10 * using this software in any fashion, you are agreeing to be bound by the
11 * terms of this license.
12 *
13 * You must not remove this notice, or any other, from this software.
14 */
15
16#include "xrick/scroller.h"
17
18#include "xrick/game.h"
19#include "xrick/debug.h"
20#include "xrick/draw.h"
21#include "xrick/maps.h"
22#include "xrick/ents.h"
23
24/*
25 * Local variables
26 */
27static U8 period;
28
29/*
30 * Scroll up
31 *
32 */
33U8
34scroll_up(void)
35{
36 U8 i, j;
37 static U8 n = 0;
38
39 /* last call: restore */
40 if (n == 8) {
41 n = 0;
42 game_period = period;
43 return SCROLL_DONE;
44 }
45
46 /* first call: prepare */
47 if (n == 0) {
48 period = game_period;
49 game_period = SCROLL_PERIOD;
50 }
51
52 /* translate map */
53 for (i = MAP_ROW_SCRTOP; i < MAP_ROW_HBBOT; i++)
54 for (j = 0x00; j < 0x20; j++)
55 map_map[i][j] = map_map[i + 1][j];
56
57 /* translate entities */
58 for (i = 0; ent_ents[i].n != 0xFF; i++) {
59 if (ent_ents[i].n) {
60 ent_ents[i].ysave -= 8;
61 ent_ents[i].trig_y -= 8;
62 ent_ents[i].y -= 8;
63 if (ent_ents[i].y & 0x8000) { /* map coord. from 0x0000 to 0x0140 */
64 IFDEBUG_SCROLLER(
65 sys_printf("xrick/scroller: entity %#04X is gone\n", i);
66 );
67 ent_ents[i].n = 0;
68 }
69 }
70 }
71
72 /* display */
73 draw_map();
74 ent_draw();
75 draw_drawStatus();
76 map_frow++;
77
78 /* loop */
79 if (n++ == 7) {
80 /* activate visible entities */
81 ent_actvis(map_frow + MAP_ROW_HBTOP, map_frow + MAP_ROW_HBBOT);
82
83 /* prepare map */
84 map_expand();
85
86 /* display */
87 draw_map();
88 ent_draw();
89 draw_drawStatus();
90 }
91
92 game_rects = &draw_SCREENRECT;
93
94 return SCROLL_RUNNING;
95}
96
97/*
98 * Scroll down
99 *
100 */
101U8
102scroll_down(void)
103{
104 U8 i, j;
105 static U8 n = 0;
106
107 /* last call: restore */
108 if (n == 8) {
109 n = 0;
110 game_period = period;
111 return SCROLL_DONE;
112 }
113
114 /* first call: prepare */
115 if (n == 0) {
116 period = game_period;
117 game_period = SCROLL_PERIOD;
118 }
119
120 /* translate map */
121 for (i = MAP_ROW_SCRBOT; i > MAP_ROW_HTTOP; i--)
122 for (j = 0x00; j < 0x20; j++)
123 map_map[i][j] = map_map[i - 1][j];
124
125 /* translate entities */
126 for (i = 0; ent_ents[i].n != 0xFF; i++) {
127 if (ent_ents[i].n) {
128 ent_ents[i].ysave += 8;
129 ent_ents[i].trig_y += 8;
130 ent_ents[i].y += 8;
131 if (ent_ents[i].y > 0x0140) { /* map coord. from 0x0000 to 0x0140 */
132 IFDEBUG_SCROLLER(
133 sys_printf("xrick/scroller: entity %#04X is gone\n", i);
134 );
135 ent_ents[i].n = 0;
136 }
137 }
138 }
139
140 /* display */
141 draw_map();
142 ent_draw();
143 draw_drawStatus();
144 map_frow--;
145
146 /* loop */
147 if (n++ == 7) {
148 /* activate visible entities */
149 ent_actvis(map_frow + MAP_ROW_HTTOP, map_frow + MAP_ROW_HTBOT);
150
151 /* prepare map */
152 map_expand();
153
154 /* display */
155 draw_map();
156 ent_draw();
157 draw_drawStatus();
158 }
159
160 game_rects = &draw_SCREENRECT;
161
162 return SCROLL_RUNNING;
163}
164
165/* eof */