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/* *******************************************************************
* Includes
* ******************************************************************/
#include "BaseUnit.h"
#include "Unit.h"
#include "Sprite.h"
#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>
/* *******************************************************************
* Defines
* ******************************************************************/
/* *******************************************************************
* Types definition
* ******************************************************************/
/* *******************************************************************
* Global variables definition
* ******************************************************************/
/* *******************************************************************
* Local variables definition
* ******************************************************************/
/*****************************************************************//**
*
* \brief Bitmap data for idle UNIT_ID_PEASANT.
*
*********************************************************************/
static const PROGMEM uint8_t au8PeasantSprData[] =
{
8,
8,
0x00,
0x3C,
0x42,
0x99,
0xA5,
0x66,
0x18,
0x00
};
/* *******************************************************************
* Local prototypes declaration
* ******************************************************************/
/* *******************************************************************
* Functions definition
* ******************************************************************/
/*****************************************************************//**
*
* \brief Constructor for Unit class.
*
*********************************************************************/
Unit::Unit(const enum Unit::tUnitID eUnitID) :
BaseUnit(),
_eUnitID(eUnitID),
_eState(UNIT_STATE_IDLE),
_target_x(0),
_target_y(0)
{
}
/*****************************************************************//**
*
* \brief Creates a Unit instance by setting default parameters
* and X/Y coordinates.
*
*********************************************************************/
void Unit::create(const enum Unit::tUnitID eUnitID, const uint16_t x, const uint16_t y)
{
/* Execute base class function first. */
BaseUnit::create(x, y);
/* Assign new ID to selected Unit. */
_eUnitID = eUnitID;
/* This table relates all available
* unit IDs against a bitmap data table. */
const uint8_t au8HpData[MAX_UNIT_ID] PROGMEM =
{
[UNIT_ID_NONE] = 0,
[UNIT_ID_PEASANT] = 25,
[UNIT_ID_SWORDMAN] = 35
};
/* Assign health according to unit ID. */
_hp = au8HpData[eUnitID];
}
/*****************************************************************//**
*
* \brief This function sets a position target for a \ref Unit
* object.
*
*********************************************************************/
void Unit::moveTo(const uint16_t x, const uint16_t y)
{
_target_x = x;
_target_y = y;
_eState = UNIT_STATE_MOVING;
}
/*****************************************************************//**
*
* \brief Periodical handler for Unit class.
*
*********************************************************************/
void Unit::handler(void)
{
/* Execute base class handler. */
BaseUnit::handler();
switch (_eState)
{
case UNIT_STATE_MOVING:
if (_x < _target_x)
{
_x += 1;
}
else if (_x > _target_x)
{
_x -= 1;
}
if (_y < _target_y)
{
_y += 1;
}
else if (_y > _target_y)
{
_y -= 1;
}
break;
case UNIT_STATE_IDLE:
default:
break;
}
}
/*****************************************************************//**
*
* \brief This function checks whether unit is inside screen
* boundaries and draws its associated bitmap.
*
*********************************************************************/
void Unit::drawHandler(void)
{
if (_eUnitID < MAX_UNIT_ID)
{
/* This table relates all available
* unit IDs against a bitmap data table. */
const uint8_t* const apu8UnitSpriteDataTable[MAX_UNIT_ID] PROGMEM =
{
[UNIT_ID_NONE] = NULL,
[UNIT_ID_PEASANT] = au8PeasantSprData,
[UNIT_ID_SWORDMAN] = NULL
};
/* Point to appropiate bitmap data given unit ID. */
const uint8_t* const pu8UnitSpriteData = apu8UnitSpriteDataTable[_eUnitID];
Sprite spr(pu8UnitSpriteData);
spr.setPos(_x - (Sprite::getWidth(pu8UnitSpriteData) >> 1), _y - (Sprite::getHeight(pu8UnitSpriteData) >> 1));
spr.draw();
BaseUnit::drawHandler(pu8UnitSpriteData);
}
else
{
/* Unit has an invalid ID. Exit. */
}
}
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