Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | pmbaty | 1 | /* |
| 2 | * src/scroller.c |
||
| 3 | * |
||
| 4 | * Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net). All rights reserved. |
||
| 5 | * |
||
| 6 | * The use and distribution terms for this software are contained in the file |
||
| 7 | * named README, which can be found in the root of this distribution. By |
||
| 8 | * using this software in any fashion, you are agreeing to be bound by the |
||
| 9 | * terms of this license. |
||
| 10 | * |
||
| 11 | * You must not remove this notice, or any other, from this software. |
||
| 12 | */ |
||
| 13 | |||
| 14 | #include <stdlib.h> |
||
| 15 | |||
| 16 | #include "system.h" |
||
| 17 | #include "game.h" |
||
| 18 | #include "scroller.h" |
||
| 19 | |||
| 20 | #include "draw.h" |
||
| 21 | #include "maps.h" |
||
| 22 | #include "ents.h" |
||
| 23 | |||
| 24 | static U8 period; |
||
| 25 | |||
| 26 | /* |
||
| 27 | * Scroll up |
||
| 28 | * |
||
| 29 | */ |
||
| 30 | U8 scroll_up (void) |
||
| 31 | { |
||
| 32 | U8 i, j; |
||
| 33 | static U8 n = 0; |
||
| 34 | |||
| 35 | /* last call: restore */ |
||
| 36 | if (n == 8) |
||
| 37 | { |
||
| 38 | n = 0; |
||
| 39 | game_period = period; |
||
| 40 | return SCROLL_DONE; |
||
| 41 | } |
||
| 42 | |||
| 43 | /* first call: prepare */ |
||
| 44 | if (n == 0) |
||
| 45 | { |
||
| 46 | period = game_period; |
||
| 47 | game_period = SCROLL_PERIOD; |
||
| 48 | } |
||
| 49 | |||
| 50 | /* translate map */ |
||
| 51 | for (i = MAP_ROW_SCRTOP; i < MAP_ROW_HBBOT; i++) |
||
| 52 | for (j = 0x00; j < 0x20; j++) |
||
| 53 | map_map[i][j] = map_map[i + 1][j]; |
||
| 54 | |||
| 55 | /* translate entities */ |
||
| 56 | for (i = 0; ent_ents[i].n != 0xFF; i++) |
||
| 57 | { |
||
| 58 | if (ent_ents[i].n) |
||
| 59 | { |
||
| 60 | ent_ents[i].ysave -= 8; |
||
| 61 | ent_ents[i].trig_y -= 8; |
||
| 62 | ent_ents[i].y -= 8; |
||
| 63 | |||
| 64 | if (ent_ents[i].y & 0x8000) |
||
| 65 | ent_ents[i].n = 0; // map coord. from 0x0000 to 0x0140 |
||
| 66 | } |
||
| 67 | } |
||
| 68 | |||
| 69 | /* display */ |
||
| 70 | draw_map (); |
||
| 71 | ent_draw (); |
||
| 72 | draw_drawStatus (); |
||
| 73 | map_frow++; |
||
| 74 | |||
| 75 | /* loop */ |
||
| 76 | if (n++ == 7) |
||
| 77 | { |
||
| 78 | /* activate visible entities */ |
||
| 79 | ent_actvis ((U8) (map_frow + MAP_ROW_HBTOP), (U8) (map_frow + MAP_ROW_HBBOT)); |
||
| 80 | |||
| 81 | /* prepare map */ |
||
| 82 | map_expand (); |
||
| 83 | |||
| 84 | /* display */ |
||
| 85 | draw_map (); |
||
| 86 | ent_draw (); |
||
| 87 | draw_drawStatus (); |
||
| 88 | } |
||
| 89 | |||
| 90 | game_rects = &draw_SCREENRECT; |
||
| 91 | |||
| 92 | return SCROLL_RUNNING; |
||
| 93 | } |
||
| 94 | |||
| 95 | |||
| 96 | /* |
||
| 97 | * Scroll down |
||
| 98 | * |
||
| 99 | */ |
||
| 100 | U8 scroll_down (void) |
||
| 101 | { |
||
| 102 | U8 i, j; |
||
| 103 | static U8 n = 0; |
||
| 104 | |||
| 105 | /* last call: restore */ |
||
| 106 | if (n == 8) |
||
| 107 | { |
||
| 108 | n = 0; |
||
| 109 | game_period = period; |
||
| 110 | return SCROLL_DONE; |
||
| 111 | } |
||
| 112 | |||
| 113 | /* first call: prepare */ |
||
| 114 | if (n == 0) |
||
| 115 | { |
||
| 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 | { |
||
| 128 | if (ent_ents[i].n) |
||
| 129 | { |
||
| 130 | ent_ents[i].ysave += 8; |
||
| 131 | ent_ents[i].trig_y += 8; |
||
| 132 | ent_ents[i].y += 8; |
||
| 133 | |||
| 134 | if (ent_ents[i].y > 0x0140) |
||
| 135 | ent_ents[i].n = 0; // map coord. from 0x0000 to 0x0140 |
||
| 136 | } |
||
| 137 | } |
||
| 138 | |||
| 139 | /* display */ |
||
| 140 | draw_map (); |
||
| 141 | ent_draw (); |
||
| 142 | draw_drawStatus (); |
||
| 143 | map_frow--; |
||
| 144 | |||
| 145 | /* loop */ |
||
| 146 | if (n++ == 7) |
||
| 147 | { |
||
| 148 | /* activate visible entities */ |
||
| 149 | ent_actvis ((U8) (map_frow + MAP_ROW_HTTOP), (U8) (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 | } |