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https://github.com/libretro/scummvm.git
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126 lines
2.9 KiB
C++
126 lines
2.9 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/system.h"
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#include "chamber/chamber.h"
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#include "chamber/common.h"
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#include "chamber/cursor.h"
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#include "chamber/resdata.h"
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#include "chamber/cga.h"
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namespace Chamber {
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byte cursor_color = 0;
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byte *cursor_shape = NULL;
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byte cursor_anim_ticks;
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byte cursor_anim_phase;
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/*cursors hotspot offsets*/
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uint16 cursor_shifts[CURSOR_MAX][2] = {
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{ 0, 0 },
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{ 7, 7 },
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{ 7, 7 },
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{ 0, 0 },
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{ 7, 7 },
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{ 0, 15 },
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{ 7, 7 },
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{ 7, 7 },
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{ 7, 7 }
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};
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uint16 cursor_x_shift;
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byte cursor_y_shift;
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uint16 cursor_x;
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byte cursor_y;
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byte cursor_backup[CURSOR_WIDTH_SPR * CURSOR_HEIGHT / CGA_BITS_PER_PIXEL];
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uint16 last_cursor_draw_ofs = 0;
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uint16 cursor_draw_ofs;
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byte cursorImage[CURSOR_WIDTH * CURSOR_HEIGHT];
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/*
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Select cursor shape and its hotspot
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*/
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void selectCursor(uint16 num) {
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cursor_x_shift = cursor_shifts[num][0];
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cursor_y_shift = cursor_shifts[num][1];
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cursor_shape = souri_data + num * CURSOR_WIDTH * CURSOR_HEIGHT * 2 / CGA_PIXELS_PER_BYTE;
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byte *src = cursor_shape;
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byte *dst = cursorImage;
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for (int16 y = 0; y < CURSOR_HEIGHT; y++) {
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for (int16 x = 0; x < CURSOR_HEIGHT / 4; x++) {
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byte colors = *src;
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byte masks = *(src++ + CURSOR_HEIGHT * CURSOR_WIDTH / 4);
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for (int16 c = 0; c < 4; c++) {
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byte color = (colors & 0xC0) >> 6;
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byte mask = (masks & 0xC0) >> 6;
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colors <<= 2;
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masks <<= 2;
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if (!mask)
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*dst++ = color;
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else {
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*dst++ = 255;
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}
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}
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}
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}
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g_system->setMouseCursor(cursorImage, CURSOR_WIDTH, CURSOR_HEIGHT, cursor_x_shift, cursor_y_shift, 255);
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g_system->showMouse(true);
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}
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/*
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Build cursor sprite for its current pixel-grained position
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*/
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void updateCursor(void) {
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}
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/*
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Draw cursor sprite and backup background pixels
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*/
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void drawCursor(byte *target) {
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g_system->updateScreen();
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}
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/*
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Restore background pixels under cursor
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*/
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void undrawCursor(byte *target) {
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}
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/*
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Restore pixels under cursor and update cursor sprite
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*/
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void updateUndrawCursor(byte *target) {
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/*TODO: does this call order makes any sense?*/
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updateCursor();
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undrawCursor(target);
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}
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} // End of namespace Chamber
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