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0bc140b4e8
* Rename Sprite to SpriteInfo --------- Co-authored-by: MeirGavish <meir.gavish@gmail.com>
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
/**
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* @file affine_background.h
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*
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* @brief Utilities for affine background on GBA
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*/
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#ifndef AFFINE_BACKGROUND_H
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#define AFFINE_BACKGROUND_H
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#include "graphic_utils.h"
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#include <tonc.h>
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/**
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* @def AFFINE_BG_IDX
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* @brief The index of the affine background BGCNT register etc.
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*/
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#define AFFINE_BG_IDX 2
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/**
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* @def AFFINE_BG_PAL_LEN
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* @brief Number of u16 colors available in the palette.
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*/
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#define AFFINE_BG_PAL_LEN 16
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/**
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* @def AFFINE_BG_PB
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* @brief The starting index of the background palette.
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*/
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#define AFFINE_BG_PB (PAL_ROW_LEN * 10)
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/**
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* @brief An ID to specify background rendering types.
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*/
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enum AffineBackgroundID
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{
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/**
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* @brief Display background for main menu.
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*
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* Signifies which background to use and provides a higher quality affine
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* mode to display when there is no game logic.
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*/
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AFFINE_BG_MAIN_MENU,
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/**
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* @brief Display background for game play.
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*
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* Signifies which background to use and provides a lower quality affine
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* mode to keep resources down during play.
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*/
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AFFINE_BG_GAME,
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};
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/**
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* @brief Initialize resources for affine background rendering
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*/
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void affine_background_init();
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/**
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* @brief Interrupt routine to update display on HBLANK
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*/
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IWRAM_CODE void affine_background_hblank();
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/**
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* @brief Per-frame update of the affine background
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*/
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IWRAM_CODE void affine_background_update();
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/**
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* @brief Update the affine background color
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*
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* @param color @ref COLOR to set
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*/
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void affine_background_set_color(COLOR color);
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/**
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* @brief Set the background palette
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*
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* Must be called with an array of size at least @ref AFFINE_BG_PAL_LEN
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*
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* @param src pointer to palette to set
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*/
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void affine_background_load_palette(const u16* src);
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/**
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* @brief Update the background id
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*
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* Update the background id by configuring display registers and loading
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* the image and palette used for the specified id.
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*
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* @param new_bg @ref AffineBackgrounID to set
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*/
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void affine_background_change_background(enum AffineBackgroundID new_bg);
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#endif // AFFINE_BACKGROUND_H
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