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72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "chamber/chamber.h"
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#include "chamber/common.h"
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#include "chamber/cga.h"
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#include "chamber/script.h"
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#include "chamber/resdata.h"
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namespace Chamber {
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void AnimateGauss(unsigned char *target) {
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unsigned char *sprite;
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unsigned char phase = Rand() % 4;
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if (phase == script_byte_vars.gauss_phase)
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phase = (phase + 1) % 4;
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script_byte_vars.gauss_phase = phase;
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sprite = gauss_data + 8 + phase * (8 * 30);
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CGA_Blit(sprite, 8, 8, 30, target, 80); /*draw to 0:4*/
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}
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void interrupt(*old_timer_isr)();
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void interrupt TimerIsr() {
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disable();
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script_byte_vars.timer_ticks++;
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if (!script_byte_vars.game_paused) {
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if (script_byte_vars.timer_ticks % 16 == 0) {
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script_word_vars.timer_ticks2 = Swap16(Swap16(script_word_vars.timer_ticks2) + 1);
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#if 1
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AnimateGauss(frontbuffer);
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#endif
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}
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}
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enable();
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}
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void InitTimer(void) {
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disable();
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old_timer_isr = getvect(0x1C);
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setvect(0x1C, TimerIsr);
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enable();
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}
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void UninitTimer(void) {
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disable();
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setvect(0x1C, old_timer_isr);
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enable();
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}
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} // End of namespace Chamber
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