164 lines
3.0 KiB
C
164 lines
3.0 KiB
C
/*
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* xrick/src/scroller.c
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*
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* Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net). All rights reserved.
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*
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* The use and distribution terms for this software are contained in the file
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* named README, which can be found in the root of this distribution. By
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* using this software in any fashion, you are agreeing to be bound by the
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* terms of this license.
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*
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* You must not remove this notice, or any other, from this software.
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*/
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#include <stdlib.h>
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#include "system.h"
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#include "game.h"
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#include "scroller.h"
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#include "debug.h"
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#include "draw.h"
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#include "maps.h"
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#include "ents.h"
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static U8 period;
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/*
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* Scroll up
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*
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*/
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U8
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scroll_up(void)
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{
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U8 i, j;
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static U8 n = 0;
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/* last call: restore */
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if (n == 8) {
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n = 0;
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game_period = period;
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return SCROLL_DONE;
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}
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/* first call: prepare */
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if (n == 0) {
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period = game_period;
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game_period = SCROLL_PERIOD;
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}
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/* translate map */
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for (i = MAP_ROW_SCRTOP; i < MAP_ROW_HBBOT; i++)
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for (j = 0x00; j < 0x20; j++)
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map_map[i][j] = map_map[i + 1][j];
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/* translate entities */
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for (i = 0; ent_ents[i].n != 0xFF; i++) {
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if (ent_ents[i].n) {
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ent_ents[i].ysave -= 8;
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ent_ents[i].trig_y -= 8;
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ent_ents[i].y -= 8;
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if (ent_ents[i].y & 0x8000) { /* map coord. from 0x0000 to 0x0140 */
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IFDEBUG_SCROLLER(
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sys_printf("xrick/scroller: entity %#04X is gone\n", i);
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);
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ent_ents[i].n = 0;
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}
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}
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}
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/* display */
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draw_map();
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ent_draw();
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draw_drawStatus();
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map_frow++;
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/* loop */
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if (n++ == 7) {
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/* activate visible entities */
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ent_actvis(map_frow + MAP_ROW_HBTOP, map_frow + MAP_ROW_HBBOT);
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/* prepare map */
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map_expand();
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/* display */
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draw_map();
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ent_draw();
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draw_drawStatus();
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}
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game_rects = &draw_SCREENRECT;
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return SCROLL_RUNNING;
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}
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/*
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* Scroll down
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*
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*/
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U8
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scroll_down(void)
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{
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U8 i, j;
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static U8 n = 0;
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/* last call: restore */
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if (n == 8) {
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n = 0;
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game_period = period;
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return SCROLL_DONE;
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}
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/* first call: prepare */
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if (n == 0) {
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period = game_period;
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game_period = SCROLL_PERIOD;
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}
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/* translate map */
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for (i = MAP_ROW_SCRBOT; i > MAP_ROW_HTTOP; i--)
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for (j = 0x00; j < 0x20; j++)
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map_map[i][j] = map_map[i - 1][j];
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/* translate entities */
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for (i = 0; ent_ents[i].n != 0xFF; i++) {
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if (ent_ents[i].n) {
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ent_ents[i].ysave += 8;
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ent_ents[i].trig_y += 8;
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ent_ents[i].y += 8;
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if (ent_ents[i].y > 0x0140) { /* map coord. from 0x0000 to 0x0140 */
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IFDEBUG_SCROLLER(
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sys_printf("xrick/scroller: entity %#04X is gone\n", i);
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);
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ent_ents[i].n = 0;
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}
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}
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}
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/* display */
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draw_map();
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ent_draw();
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draw_drawStatus();
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map_frow--;
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/* loop */
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if (n++ == 7) {
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/* activate visible entities */
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ent_actvis(map_frow + MAP_ROW_HTTOP, map_frow + MAP_ROW_HTBOT);
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/* prepare map */
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map_expand();
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/* display */
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draw_map();
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ent_draw();
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draw_drawStatus();
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}
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game_rects = &draw_SCREENRECT;
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return SCROLL_RUNNING;
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}
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/* eof */
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