99 lines
4.6 KiB
C
99 lines
4.6 KiB
C
// MIT License
|
|
|
|
// Copyright (c) 2017 Vadim Grigoruk @nesbox // grigoruk@gmail.com
|
|
// Damien de Lemeny @ddelemeny // hello@ddelemeny.me
|
|
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
#include "tilesheet.h"
|
|
|
|
#include <stdlib.h>
|
|
|
|
static const tic_blit_segment segments[] = {
|
|
// +page +nb_pages
|
|
// | +bank +bank_size
|
|
// | | | | +sheet_width
|
|
// | | | | | +tile_width
|
|
{0, 0, 1, 256, 16, 8, TIC_SPRITESIZE, tic_tool_peek1, tic_tool_poke1}, // system gfx
|
|
{0, 0, 1, 256, 16, 8, TIC_SPRITESIZE, tic_tool_peek1, tic_tool_poke1}, // system font
|
|
{0, 0, 1, 256, 16, 8, sizeof(tic_tile), tic_tool_peek4, tic_tool_poke4}, // 4bpp p0 bg
|
|
{0, 1, 1, 256, 16, 8, sizeof(tic_tile), tic_tool_peek4, tic_tool_poke4}, // 4bpp p0 fg
|
|
|
|
{0, 0, 2, 512, 32, 16, sizeof(tic_tile), tic_tool_peek2, tic_tool_poke2}, // 2bpp p0 bg
|
|
{1, 0, 2, 512, 32, 16, sizeof(tic_tile), tic_tool_peek2, tic_tool_poke2}, // 2bpp p1 bg
|
|
{0, 1, 2, 512, 32, 16, sizeof(tic_tile), tic_tool_peek2, tic_tool_poke2}, // 2bpp p0 fg
|
|
{1, 1, 2, 512, 32, 16, sizeof(tic_tile), tic_tool_peek2, tic_tool_poke2}, // 2bpp p1 fg
|
|
|
|
{0, 0, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p0 bg
|
|
{1, 0, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p1 bg
|
|
{2, 0, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p2 bg
|
|
{3, 0, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p3 bg
|
|
{0, 1, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p0 fg
|
|
{1, 1, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p1 fg
|
|
{2, 1, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p2 fg
|
|
{3, 1, 4, 1024, 64, 32, sizeof(tic_tile), tic_tool_peek1, tic_tool_poke1}, // 1bpp p3 fg
|
|
};
|
|
|
|
extern u8 tic_tilesheet_getpix(const tic_tilesheet* sheet, s32 x, s32 y);
|
|
extern void tic_tilesheet_setpix(const tic_tilesheet* sheet, s32 x, s32 y, u8 value);
|
|
extern u8 tic_tilesheet_gettilepix(const tic_tileptr* tile, s32 x, s32 y);
|
|
extern void tic_tilesheet_settilepix(const tic_tileptr* tile, s32 x, s32 y, u8 value);
|
|
|
|
tic_tilesheet tic_tilesheet_get(u8 segment, u8* ptr)
|
|
{
|
|
return (tic_tilesheet) { &segments[segment], ptr };
|
|
}
|
|
|
|
tic_tileptr tic_tilesheet_gettile(const tic_tilesheet* sheet, s32 index, bool local)
|
|
{
|
|
enum { Cols = 16, Size = 8 };
|
|
const tic_blit_segment* segment = sheet->segment;
|
|
|
|
s32 bank, page, iy, ix;
|
|
if (local) {
|
|
index = index & 255;
|
|
bank = segment->bank_orig;
|
|
page = segment->page_orig;
|
|
div_t ixy = div(index, Cols);
|
|
iy = ixy.quot;
|
|
ix = ixy.rem;
|
|
}
|
|
else {
|
|
// reindex
|
|
div_t ia = div(index, segment->bank_size); // bank, bank_index
|
|
div_t ib = div(ia.rem, segment->sheet_width); // yi, bank_xi
|
|
div_t ic = div(ib.rem, Cols); // page, xi
|
|
bank = (ia.quot + segment->bank_orig) % 2;
|
|
page = (ic.quot + segment->page_orig) % segment->nb_pages;
|
|
iy = ib.quot % Cols;
|
|
ix = ic.rem;
|
|
}
|
|
|
|
div_t xdiv = div(ix, segment->nb_pages); // xbuffer, xoffset
|
|
u32 ptr_offset = (bank * Cols + iy) * Cols + page * Cols / segment->nb_pages + xdiv.quot;
|
|
u8* ptr = sheet->ptr + segment->ptr_size * ptr_offset;
|
|
u32 offset = (xdiv.rem * Size);
|
|
|
|
return (tic_tileptr) { segment, offset, ptr };
|
|
}
|
|
|
|
extern s32 tic_blit_calc_segment(const tic_blit* blit);
|
|
extern void tic_blit_update_bpp(tic_blit* blit, tic_bpp bpp);
|
|
extern s32 tic_blit_calc_index(const tic_blit* blit);
|