mirror of
https://github.com/nunuhara/xsystem4.git
synced 2026-10-12 17:28:14 +03:00
kichikuou
adb558c67c
In addition to DrawDungeon.c, this adds the following files in
{src,include}/dungeon/:
- dgn.{h,c}: Parser for .dgn (map data)
- dtx.{h,c}: Parser for .dtx (textures)
- tes.{h,c}: Parser for .tes (sound IDs associated with textures)
- dungeon.{h,c}: Renderer main routines
- mesh.{h,c}: Renderer for walls and stairs
- skybox.{h,c}: Renderer for background cubemap
- event_markers.{h,c}: Renderer for event markers
And the following changes are made to the existing graphics code:
- sact_Update() calls dungeon_update(), so that event markers animate
- gfx_render_texture() renders vertically flipped image when
texture.flip_y == true (see the comment in dungeon_context_create())
Some features are not implemented yet, including 2D maps and door
animation.
This makes cglm a dependency.
80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
/* Copyright (C) 2021 kichikuou <KichikuouChrome@gmail.com>
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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 2 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://gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "system4.h"
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#include "system4/buffer.h"
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#include "system4/cg.h"
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#include "dungeon/dtx.h"
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struct dtx *dtx_parse(uint8_t *data, size_t size)
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{
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struct buffer r;
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buffer_init(&r, data, size);
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if (strncmp(buffer_strdata(&r), "DTEX", 4)) {
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WARNING("dtx_parse: not a DTX file");
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return NULL;
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}
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buffer_skip(&r, 4);
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struct dtx *dtx = xcalloc(1, sizeof(struct dtx));
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dtx->version = buffer_read_int32(&r);
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dtx->nr_rows = buffer_read_int32(&r);
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dtx->nr_columns = buffer_read_int32(&r);
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dtx->entries = xcalloc(dtx->nr_rows * dtx->nr_columns, sizeof(struct dtx_entry));
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for (int i = 0; i < dtx->nr_rows; i++) {
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int nr_items = buffer_read_int32(&r);
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if (nr_items != dtx->nr_columns) {
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WARNING("dtx_parse: unexpected number of items");
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dtx_free(dtx);
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return NULL;
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}
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for (int j = 0; j < nr_items; j++) {
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uint32_t size = buffer_read_int32(&r);
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if (!size)
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continue;
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uint8_t *data = xmalloc(size);
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buffer_read_bytes(&r, data, size);
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dtx->entries[i * nr_items + j].size = size;
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dtx->entries[i * nr_items + j].data = data;
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}
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}
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return dtx;
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}
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void dtx_free(struct dtx *dtx)
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{
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int nr_entries = dtx->nr_rows * dtx->nr_columns;
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for (int i = 0; i < nr_entries; i++) {
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if (dtx->entries[i].data)
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free(dtx->entries[i].data);
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}
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free(dtx->entries);
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free(dtx);
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}
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struct cg *dtx_create_cg(struct dtx *dtx, int type, int index)
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{
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if (type < 0 || type >= dtx->nr_rows || index < 0 || index >= dtx->nr_columns)
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return NULL;
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struct dtx_entry *entry = &dtx->entries[type * dtx->nr_columns + index];
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if (!entry->data)
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return NULL;
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return cg_load_buffer(entry->data, entry->size);
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}
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