139 lines
3.9 KiB
C++
139 lines
3.9 KiB
C++
/* *******************************************************************
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* Includes
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* ******************************************************************/
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#include "Sprite.h"
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#include "System.h"
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/* *******************************************************************
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* Defines
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* ******************************************************************/
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/* *******************************************************************
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* Types definition
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* ******************************************************************/
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/* *******************************************************************
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* Global variables definition
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* ******************************************************************/
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const Camera* _cam;
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/* *******************************************************************
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* Local variables definition
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* ******************************************************************/
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/* *******************************************************************
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* Local prototypes declaration
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* ******************************************************************/
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/* *******************************************************************
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* Functions definition
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* ******************************************************************/
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/*****************************************************************//**
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*
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* \brief Constructor for Sprite class.
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*
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* \param pu8SprData
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* Pointer to raw sprite data.
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*
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* \param _followCam
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* Sprite is moved by camera. Default value is true.
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*
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* \param u8Colour
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* Sprite colour. Default value is BLACK.
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*
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* \param rotation
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* Sprite rotation. Default value is NOROT.
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*
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*********************************************************************/
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Sprite::Sprite(const uint8_t* const pu8SprData, const bool followCam, const uint8_t u8Colour, const uint8_t rotation) :
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_pu8SprData(pu8SprData),
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_followCam(followCam),
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_colour(u8Colour),
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_rotation(rotation),
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_x(0),
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_y(0)
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{
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}
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/*****************************************************************//**
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*
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* \brief This function draws a \ref Sprite object on the screen.
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*
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* \remarks If \ref Sprite object must be followed by a \ref Camera
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* object, X and Y coordinates are automatically adjusted.
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*
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*********************************************************************/
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void Sprite::draw(void)
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{
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gb.display.setColor(_colour, WHITE);
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if (_cam != NULL)
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{
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const int16_t x = _followCam ? _cam->getX(_x) : (int16_t)_x;
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const int16_t y = _followCam ? _cam->getY(_y) : (int16_t)_y;
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if (_pu8SprData != NULL)
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{
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gb.display.drawBitmap((int8_t)x, (int8_t)y, _pu8SprData);
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}
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else
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{
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/* Undefined sprite data. */
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}
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}
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else
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{
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/* Error: uninitialized camera. */
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}
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}
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uint8_t Sprite::getWidth(const uint8_t* const pu8SprData)
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{
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enum
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{
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WIDTH_DATA_INDEX = 0
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};
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/* Retrieve unit width from sprite data. */
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const uint8_t w = pgm_read_byte(&pu8SprData[WIDTH_DATA_INDEX]);
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/* Return retrieved width. */
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return w;
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}
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uint8_t Sprite::getHeight(const uint8_t* const pu8SprData)
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{
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enum
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{
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HEIGHT_DATA_INDEX = 1
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};
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/* Retrieve unit height from sprite data. */
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const uint8_t h = pgm_read_byte(&pu8SprData[HEIGHT_DATA_INDEX]);
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/* Return retrieved height. */
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return h;
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}
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/*****************************************************************//**
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*
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* \brief Reportedly, this function updates X/Y coordinates for
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* a Sprite object.
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*
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* \param x
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* X position, relative to screen coordinates origin.
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*
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* \param y
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* Y position, relative to screen coordinates origin.
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*
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*********************************************************************/
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void Sprite::setPos(const uint8_t x, const uint8_t y)
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{
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/* Update coords according to input parameters. */
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_x = x;
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_y = y;
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}
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