lingo-archipelago - Randomizer client for LINGO using Archipelago Multiworld

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			Archipelago/gamedata.gd

/* * Copyright (C) 2006-2007, Greg McIntyre. All rights reserved. See the file * named COPYING in the distribution for more details. */ /** * \mainpage Field of View Library * * \section about About * * This is a C library which implements a course-grained lighting * algorithm suitable for tile-based games such as roguelikes. * * \section copyright Copyright * * \verbinclude COPYING * * \section thanks Thanks * * Thanks to Björn Bergström * <bjorn.bergstrom@hyperisland.se> for the algorithm. * */ /** * \file fov.h * Field-of-view algorithm for dynamically casting light/shadow on a * low resolution 2D raster. */ #ifndef LIBFOV_HEADER #define LIBFOV_HEADER #include <stdbool.h> #include <stddef.h> #ifdef __cplusplus extern "C" { #endif /** Eight-way directions. */ typedef enum { FOV_EAST = 0, FOV_NORTHEAST, FOV_NORTH, FOV_NORTHWEST, FOV_WEST, FOV_SOUTHWEST, FOV_SOUTH, FOV_SOUTHEAST } fov_direction_type; /** Values for the shape setting. */ typedef enum { FOV_SHAPE_CIRCLE_PRECALCULATE, FOV_SHAPE_SQUARE, FOV_SHAPE_CIRCLE, FOV_SHAPE_OCTAGON } fov_shape_type; /** Values for the corner peek setting. */ typedef enum { FOV_CORNER_NOPEEK, FOV_CORNER_PEEK } fov_corner_peek_type; /** Values for the opaque apply setting. */ typedef enum { FOV_OPAQUE_APPLY, FOV_OPAQUE_NOAPPLY } fov_opaque_apply_type; /** @cond INTERNAL */ typedef /*@null@*/ unsigned *height_array_t; /** @endcond */ typedef struct { /** Opacity test callback. */ /*@null@*/ bool (*opaque)(void *map, int x, int y); /** Lighting callback to set lighting on a map tile. */ /*@null@*/ void (*apply)(void *map, int x, int y, int dx, int dy, void *src); /** Shape setting. */ fov_shape_type shape; /** Whether to peek around corners. */ fov_corner_peek_type corner_peek; /** Whether to call apply on opaque tiles. */ fov_opaque_apply_type opaque_apply; /** \cond INTERNAL */ /** Pre-calculated data. \internal */ /*@null@*/ height_array_t *heights; /** Size of pre-calculated data. \internal */ unsigned numheights; /** \endcond */ } fov_settings_type; /** The opposite direction to that given. */ #define fov_direction_opposite(direction) ((fov_direction_type)(((direction)+4)&0x7)) /** * Set all the default options. You must call this option when you * create a new settings data structure. * * These settings are the defaults used: * * - shape: FOV_SHAPE_CIRCLE_PRECALCULATE * - corner_peek: FOV_CORNER_NOPEEK * - opaque_apply: FOV_OPAQUE_APPLY * * Callbacks still need to be set up after calling this function. * * \param settings Pointer to data structure containing settings. */ void fov_settings_init(fov_settings_type *settings); /** * Set the shape of the field of view. * * \param settings Pointer to data structure containing settings. * \param value One of the following values, where R is the radius: * * - FOV_SHAPE_CIRCLE_PRECALCULATE \b (default): Limit the FOV to a * circle with radius R by precalculating, which consumes more memory * at the rate of 4*(R+2) bytes per R used in calls to fov_circle. * Each radius is only calculated once so that it can be used again. * Use fov_free() to free this precalculated data's memory. * * - FOV_SHAPE_CIRCLE: Limit the FOV to a circle with radius R by * calculating on-the-fly. * * - FOV_SHAPE_OCTOGON: Limit the FOV to an octogon with maximum radius R. * * - FOV_SHAPE_SQUARE: Limit the FOV to an R*R square. */ void fov_settings_set_shape(fov_settings_type *settings, fov_shape_type value); /** * <em>NOT YET IMPLEMENTED</em>. * * Set whether sources will peek around corners. * * \param settings Pointer to data structure containing settings. * \param value One of the following values: * * - FOV_CORNER_PEEK \b (default): Renders: \verbatim ........ ........ ........ ..@# ...# \endverbatim * - FOV_CORNER_NOPEEK: Renders: \verbatim ...... ..... .... ..@# ...# \endverbatim */ void fov_settings_set_corner_peek(fov_settings_type *settings, fov_corner_peek_type value); /** * Whether to call the apply callback on opaque tiles. * * \param settings Pointer to data structure containing settings. * \param value One of the following values: * * - FOV_OPAQUE_APPLY \b (default): Call apply callback on opaque tiles. * - FOV_OPAQUE_NOAPPLY: Do not call the apply callback on opaque tiles. */ void fov_settings_set_opaque_apply(fov_settings_type *settings, fov_opaque_apply_type value); /** * Set the function used to test whether a map tile is opaque. * * \param settings Pointer to data structure containing settings. * \param f The function called to test whether a map tile is opaque. */ void fov_settings_set_opacity_test_function(fov_settings_type *settings, bool (*f)(void *map, int x, int y)); /** * Set the function used to apply lighting to a map tile. * * \param settings Pointer to data structure containing settings. * \param f The function called to apply lighting to a map tile. */ void fov_settings_set_apply_lighting_function(fov_settings_type *settings, void (*f)(void *map, int x, int y, int dx, int dy, void *src)); /** * Free any memory that may have been cached in the settings * structure. * * \param settings Pointer to data structure containing settings. */ void fov_settings_free(fov_settings_type *settings); /** * Calculate a full circle field of view from a source at (x,y). * * \param settings Pointer to data structure containing settings. * \param map Pointer to map data structure to be passed to callbacks. * \param source Pointer to data structure holding source of light. * \param source_x x-axis coordinate from which to start. * \param source_y y-axis coordinate from which to start. * \param radius Euclidean distance from (x,y) after which to stop. */ void fov_circle(fov_settings_type *settings, void *map, void *source, int source_x, int source_y, unsigned radius ); /** * Calculate a field of view from source at (x,y), pointing * in the given direction and with the given angle. The larger * the angle, the wider, "less focused" the beam. Each side of the * line pointing in the direction from the source will be half the * angle given such that the angle specified will be represented on * the raster. * * \param settings Pointer to data structure containing settings. * \param map Pointer to map data structure to be passed to callbacks. * \param source Pointer to data structure holding source of light. * \param source_x x-axis coordinate from which to start. * \param source_y y-axis coordinate from which to start. * \param radius Euclidean distance from (x,y) after which to stop. * \param direction One of eight directions the beam of light can point. * \param angle The angle at the base of the beam of light, in degrees. */ void fov_beam(fov_settings_type *settings, void *map, void *source, int source_x, int source_y, unsigned radius, fov_direction_type direction, float angle ); #ifdef __cplusplus } /* extern "C" */ #endif #endif


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