74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
//---
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// render: Rendering utilities
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//---
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#pragma once
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#include "settings.h"
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#include "map.h"
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#include "pathfinding.h"
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#include <stdint.h>
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//---
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// Camera management
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//---
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typedef struct {
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/* Current zoom level */
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int zoom;
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/* Boundaries of the viewable space, in map coordinates */
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struct {
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map_coord_t x_min, x_max;
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map_coord_t y_min, y_max;
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} limits;
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/* Viewport on the screen (in pixels) */
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struct {
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int16_t x_min, x_max;
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int16_t y_min, y_max;
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} viewport;
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/* Width and height of the viewable area, in map coordinates */
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map_coord_t width, height;
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/* Current center point (position of center of screen in the map) */
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map_coord_t x, y;
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} camera_t;
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/* Initialize camera to look at the middle of the map, and set boundaries. */
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void camera_init(camera_t *c, map_t const *m);
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/* Translate map coordinates to pixel coordinates on screen. */
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ivec2 camera_map2screen(camera_t const *c, vec2 map_point);
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/* Translate screen coordinates to map coordinates. */
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vec2 camera_screen2map(camera_t const *c, ivec2 screen_point);
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/* Move camera by a distance in map coordinates. */
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void camera_move(camera_t *c, map_coord_t dx, map_coord_t dy);
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/* Set the zoom level of the camera. */
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void camera_zoom(camera_t *c, int zoom);
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/* Number of pixels per unit of map. Assumes isotropic space. */
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fixed_t camera_ppu(camera_t const *c);
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//---
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// Rendering
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//---
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/* Render a single layer of the map, with animated tiles.
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ss_x and ss_y are additional displacement for screenshake; default 0.
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layer is HORIZONTAL (floor), VERTICAL (wall), or CEILING.
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map_anim is the indivual tiles' animation time, can be NULL.
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flags is the flags for dsubimage() for the tiles. */
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void render_map_layer(map_t const *map, camera_t const *c, int ss_x, int ss_y,
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int layer, uint16_t *map_anim, int flags);
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/* Render game full-screen. */
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struct game;
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void render_game(struct game const *g, bool show_hitboxes);
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/* Render pathfinding results on the grid. */
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void render_pfg_all2one(pfg_all2one_t const *paths, camera_t const *c,
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uint8_t *occupation);
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