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Xworld - Another World interpreter for Rockbox

Browse source 
Co-conspirators: Franklin Wei, Benjamin Brown

--------------------------------------------------------------------
This work is based on:
- Fabien Sanglard's "Fabother World" based on
- Piotr Padkowski's newRaw interpreter which was based on
- Gregory Montoir's reverse engineering of
- Eric Chahi's assembly code

--------------------------------------------------------------------
Progress:

* The plugin runs pretty nicely (with sound!) on most color targets
* Keymaps for color LCD targets are complete
* The manual entry is finished
* Grayscale/monochrome support is NOT PLANNED
  - the game looks horrible in grayscale! :p

--------------------------------------------------------------------
Notes:

* The original game strings were built-in to the executable, and
  were copyrighted and could not be used.
* This port ships with an alternate set of strings by default, but
  can load the "official" strings from a file at runtime.

--------------------------------------------------------------------
To be done (in descending order of importance):

* vertical stride compatibility                          <30% done>
* optimization                                           <10% done>

Change-Id: I3155b0d97c2ac470cb8a2040f40d4139ddcebfa5
Reviewed-on: http://gerrit.rockbox.org/1077
Reviewed-by: Michael Giacomelli <giac2000@hotmail.com>
This commit is contained in:
Franklin Wei 2014-10-13 21:00:47 -04:00 • committed by Michael Giacomelli
parent b681e932a9
commit 33cb13dee5
41 changed files with 6964 additions and 0 deletions
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127
apps/plugins/xworld/video.h Normal file
View file

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2014 Franklin Wei, Benjamin Brown
* Copyright (C) 2004 Gregory Montoir
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#ifndef __VIDEO_H__
#define __VIDEO_H__
#include "intern.h"
struct StrEntry {
uint16_t id;
char *str;
};
#define MAX_POINTS 50
struct Polygon {
uint16_t bbw, bbh;
uint8_t numPoints;
struct Point points[MAX_POINTS];
};
void polygon_readVertices(struct Polygon*, const uint8_t *p, uint16_t zoom);
struct Resource;
struct Serializer;
struct System;
// This is used to detect the end of _stringsTableEng and _stringsTableDemo
#define END_OF_STRING_DICTIONARY 0xFFFF
// Special value when no palette change is necessary
#define NO_PALETTE_CHANGE_REQUESTED 0xFF
/* 320x200 pixels, with 2 pixels/byte */
#define VID_PAGE_SIZE ( 320 * 200 / 2 )
struct Video {
/* FW: static const uint8_t _font[];*/
/* FW: moved to video_data.c */
struct Resource *res;
struct System *sys;
uint8_t paletteIdRequested, currentPaletteId;
uint8_t *_pagePtrs[4];
uint8_t *page_data;
// I am almost sure that:
// _curPagePtr1 is the backbuffer
// _curPagePtr2 is the frontbuffer
// _curPagePtr3 is the background builder.
uint8_t *_curPagePtr1, *_curPagePtr2, *_curPagePtr3;
struct Polygon polygon;
int16_t _hliney;
//Precomputer division lookup table
uint16_t _interpTable[0x400];
struct Ptr _pData;
uint8_t *_dataBuf;
};
typedef void (*drawLine)(struct Video*, int16_t x1, int16_t x2, uint8_t col);
//Video(Resource *res, System *stub);
void video_create(struct Video*, struct Resource*, struct System*);
void video_init(struct Video* v);
void video_setDataBuffer(struct Video* v, uint8_t *dataBuf, uint16_t offset);
void video_readAndDrawPolygon(struct Video* v, uint8_t color, uint16_t zoom, const struct Point *pt);
void video_fillPolygon(struct Video* v, uint16_t color, uint16_t zoom, const struct Point *pt);
void video_readAndDrawPolygonHierarchy(struct Video* v, uint16_t zoom, const struct Point *pt);
int32_t video_calcStep(struct Video* v, const struct Point *p1, const struct Point *p2, uint16_t *dy);
void video_drawString(struct Video* v, uint8_t color, uint16_t x, uint16_t y, uint16_t strId);
void video_drawChar(struct Video* v, uint8_t c, uint16_t x, uint16_t y, uint8_t color, uint8_t *buf);
void video_drawPoint(struct Video* v, uint8_t color, int16_t x, int16_t y);
void video_drawLineBlend(struct Video* v, int16_t x1, int16_t x2, uint8_t color);
void video_drawLineN(struct Video* v, int16_t x1, int16_t x2, uint8_t color);
void video_drawLineP(struct Video* v, int16_t x1, int16_t x2, uint8_t color);
uint8_t *video_getPagePtr(struct Video* v, uint8_t page);
void video_changePagePtr1(struct Video* v, uint8_t page);
void video_fillPage(struct Video* v, uint8_t page, uint8_t color);
void video_copyPage(struct Video* v, uint8_t src, uint8_t dst, int16_t vscroll);
void video_copyPagePtr(struct Video* v, const uint8_t *src);
uint8_t *video_allocPage(struct Video* v);
void video_changePal(struct Video* v, uint8_t pal);
void video_updateDisplay(struct Video* v, uint8_t page);
void video_saveOrLoad(struct Video* v, struct Serializer *ser);
#define TRACE_PALETTE 0
#define TRACE_FRAMEBUFFER 0
#if TRACE_FRAMEBUFFER
void video_dumpFrameBuffer(struct Video* v, uint8_t *src, uint8_t *dst, int x, int y);
void video_dumpFrameBuffers(struct Video* v, char* comment);
#endif
#define TRACE_BG_BUFFER 0
#if TRACE_BG_BUFFER
void video_dumpBackGroundBuffer(struct Video* v);
#endif
#endif