| /* |
| * Copyright (c) 2002-2004, Adam Dunkels. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * 3. The name of the author may not be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * This file is part of the Contiki desktop environment |
| * |
| * $Id: ssfire.c,v 1.1 2005/05/12 21:12:43 oliverschmidt Exp $ |
| * |
| */ |
| |
| #include <stdlib.h> |
| |
| #include "ctk.h" |
| #include "ctk-draw.h" |
| #include "ctk-mouse.h" |
| #include "ek.h" |
| #include "loader.h" |
| |
| |
| /*static DISPATCHER_SIGHANDLER(ssfire_sighandler, s, data); |
| static void ssfire_idle(void); |
| static struct dispatcher_proc p = |
| {DISPATCHER_PROC("Fire screensaver", ssfire_idle, |
| ssfire_sighandler, |
| NULL)}; |
| static ek_id_t id;*/ |
| |
| EK_EVENTHANDLER(ssfire_eventhandler, ev, data); |
| EK_POLLHANDLER(ssfire_pollhandler); |
| EK_PROCESS(p, "Fire screensaver", EK_PRIO_LOWEST, |
| ssfire_eventhandler, ssfire_pollhandler, NULL); |
| static ek_id_t id = EK_ID_NONE; |
| |
| static unsigned char flames[8*17]; |
| |
| static const unsigned char flamecolors[16] = |
| {0x00, 0x00, 0x00, 0x11, 0x99, 0xDD, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
| |
| static unsigned char *flameptr; |
| static unsigned char x, y; |
| |
| |
| /*-----------------------------------------------------------------------------------*/ |
| LOADER_INIT_FUNC(ssfire_init, arg) |
| { |
| arg_free(arg); |
| |
| if(id == EK_ID_NONE) { |
| id = ek_start(&p); |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| static void |
| fire_quit(void) |
| { |
| *(char *)0xC051 = 0; |
| |
| ek_exit(); |
| id = EK_ID_NONE; |
| LOADER_UNLOAD(); |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| static void |
| fire_init(void) |
| { |
| *(char *)0xC056 = 0; |
| *(char *)0xC054 = 0; |
| *(char *)0xC052 = 0; |
| *(char *)0xC050 = 0; |
| |
| for(y = 0; y < 24; ++y) { |
| gotoy(y); |
| for(x = 0; x < 40; ++x) { |
| (*(unsigned char **)0x28)[x] = 0x00; |
| } |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| EK_EVENTHANDLER(ssfire_eventhandler, ev, data) |
| { |
| EK_EVENTHANDLER_ARGS(ev, data); |
| |
| if(ev == EK_EVENT_INIT) { |
| ctk_mode_set(CTK_MODE_SCREENSAVER); |
| ctk_mouse_hide(); |
| fire_init(); |
| } else if(ev == ctk_signal_screensaver_stop || |
| ev == EK_EVENT_REQUEST_EXIT) { |
| fire_quit(); |
| ctk_draw_init(); |
| ctk_desktop_redraw(NULL); |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| #pragma optimize(push, off) |
| static void |
| fire_burn(void) |
| { |
| /* Calculate new flames. */ |
| asm("ldy #$00"); |
| loop1: |
| asm("lda %v+7,y", flames); |
| asm("clc"); |
| asm("adc %v+8,y", flames); |
| asm("adc %v+9,y", flames); |
| asm("adc %v+16,y", flames); |
| asm("lsr"); |
| asm("lsr"); |
| asm("sta %v,y", flames); |
| asm("iny"); |
| asm("cpy #(8*15)"); |
| asm("bne %g", loop1); |
| |
| /* Fill last line with pseudo-random data. */ |
| asm("ldy #$05"); |
| loop2: |
| asm("jsr %v", rand); |
| asm("and #$0F"); |
| asm("sta %v+8*15+1,y", flames); |
| asm("dey"); |
| asm("bpl %g", loop2); |
| } |
| #pragma optimize(pop) |
| /*-----------------------------------------------------------------------------------*/ |
| EK_POLLHANDLER(ssfire_pollhandler) |
| { |
| if(ctk_mode_get() == CTK_MODE_SCREENSAVER) { |
| |
| fire_burn(); |
| |
| /* Display flames on screen. */ |
| flameptr = flames; |
| for(y = 9; y < 24; ++y) { |
| gotoy(y); |
| for(x = 0; x < 8; ++x) { |
| (*(unsigned char **)0x28)[x ] = |
| (*(unsigned char **)0x28)[x+32] = flamecolors[flameptr[x]]; |
| } |
| flameptr += 8; |
| } |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| |