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//******************************************************************************
// @file Pong.h
// @author Nicolai Shlapunov
//
// @details Application: Pong Application Class, implementation
//
// @copyright Copyright (c) 2017, Devtronic & Nicolai Shlapunov
// All rights reserved.
//
// @section SUPPORT
//
// Devtronic invests time and resources providing this open source code,
// please support Devtronic and open-source hardware/software by
// donations and/or purchasing products from Devtronic.
//
//******************************************************************************
// *****************************************************************************
// *** Includes ************************************************************
// *****************************************************************************
#include "Pong.h"
// *****************************************************************************
// *** Definitions *********************************************************
// *****************************************************************************
#define BOX_W 10
#define BOX_H 50
#define TICK_MS (50U)
#define SPEED_PIX_PER_S (50U)
#define SPEED ((SPEED_PIX_PER_S * 1000U) / (1000U / TICK_MS))
// *****************************************************************************
// *** Get Instance ********************************************************
// *****************************************************************************
Pong& Pong::GetInstance(void)
{
static Pong pong;
return pong;
}
// *****************************************************************************
// *** Application Loop ****************************************************
// *****************************************************************************
Result Pong::Loop()
{
if( (input_drv.GetDeviceType(InputDrv::EXT_LEFT) == InputDrv::EXT_DEV_BTN)
|| (input_drv.GetDeviceType(InputDrv::EXT_RIGHT) == InputDrv::EXT_DEV_BTN) )
{
UiMsgBox msg_box("Buttons module can't be used", "Error!");
msg_box.Run(3000U);
}
else
{
uint8_t left_score = 0U;
uint8_t right_score = 0U;
// Init last encoders & buttons values
(void) input_drv.GetEncoderState(InputDrv::EXT_LEFT, last_enc_left_val);
(void) input_drv.GetEncoderState(InputDrv::EXT_RIGHT, last_enc_right_val);
// Initialize random seed
srand(RtosTick::GetTickCount());
char scr_str[32] = {" 0 : 0 "};
String score_str(scr_str, (display_drv.GetScreenW() - strlen(scr_str)*String::GetFontW(String::FONT_12x16))/2,
16, COLOR_WHITE, String::FONT_12x16);
score_str.Show(32768);
// Init ticks variable
uint32_t last_wake_ticks = RtosTick::GetTickCount();
Circle ball(150-30, 120+30, 5, COLOR_MAGENTA, true);
ball.Show(32768+1);
Box box_left(0, 0, BOX_W, BOX_H, COLOR_WHITE, true);
Box box_right(display_drv.GetScreenW() - BOX_W, 0, BOX_W, BOX_H, COLOR_WHITE, true);
box_left.Show(32768+2);
box_right.Show(32768+2);
// Update Display
display_drv.UpdateDisplay();
// Pause until next tick
RtosTick::DelayUntilMs(last_wake_ticks, 200U);
// Clear Game Over flag before start game
game_over = false;
// Game cycle
while(game_over == false)
{
// Lock Display
display_drv.LockDisplay();
if(input_drv.GetDeviceType(InputDrv::EXT_LEFT) == InputDrv::EXT_DEV_ENC)
{
// Get encoder 1 count since last call
enc_left_cnt = input_drv.GetEncoderState(InputDrv::EXT_LEFT, last_enc_left_val);
// Process result
if(enc_left_cnt != 0)
{
box_left.Move(0, enc_left_cnt*abs(enc_left_cnt)*3, true);
if(box_left.GetStartY() < 0)
{
box_left.Move(box_left.GetStartX(), 0);
}
if(box_left.GetEndY() > (int32_t)display_drv.GetScreenH())
{
box_left.Move(box_left.GetStartX(), display_drv.GetScreenH() - BOX_H);
}
}
}
if(input_drv.GetDeviceType(InputDrv::EXT_RIGHT) == InputDrv::EXT_DEV_ENC)
{
// Get encoder 2 count since last call
enc_right_cnt = input_drv.GetEncoderState(InputDrv::EXT_RIGHT, last_enc_right_val);
// Process result
if(enc_right_cnt != 0)
{
box_right.Move(0, -enc_right_cnt*abs(enc_right_cnt)*3, true);
if(box_right.GetStartY() < 0)
{
box_right.Move(box_right.GetStartX(), 0);
}
if(box_right.GetEndY() > (int32_t)display_drv.GetScreenH())
{
box_right.Move(box_right.GetStartX(), display_drv.GetScreenH() - BOX_H);
}
}
}
if(input_drv.GetDeviceType(InputDrv::EXT_LEFT) == InputDrv::EXT_DEV_JOY)
{
int32_t x = 0;
int32_t y = 0;
// Get encoder 1 count since last call
input_drv.GetJoystickState(InputDrv::EXT_LEFT, x, y);
// Calculate position
int32_t pos = ((display_drv.GetScreenH() - BOX_H) * y) / 0xFFF;
// Move box
box_left.Move(box_left.GetStartX(), pos);
}
if(input_drv.GetDeviceType(InputDrv::EXT_RIGHT) == InputDrv::EXT_DEV_JOY)
{
int32_t x = 0;
int32_t y = 0;
// Get encoder 1 count since last call
input_drv.GetJoystickState(InputDrv::EXT_RIGHT, x, y);
// Calculate position
int32_t pos = ((display_drv.GetScreenH() - BOX_H) * y) / 0xFFF;
// Move box
box_right.Move(box_right.GetStartX(), pos);
}
if(speed == 0)
{
// Variable for port - Find port for start game
InputDrv::PortType port = (x_dir > 0) ? InputDrv::EXT_LEFT : InputDrv::EXT_RIGHT;
// If any encoder button pressed
if( (input_drv.GetDeviceType(port) == InputDrv::EXT_DEV_ENC)
&& (input_drv.GetEncoderButtonState(port, InputDrv::ENC_BTN_ENT) == true) )
{
speed = 5;
}
if( (input_drv.GetDeviceType(port) == InputDrv::EXT_DEV_JOY)
&& (input_drv.GetJoystickButtonState(port) == true) )
{
speed = 5;
}
}
// Move ball and check miss
if(MoveBall(ball, box_left, box_right) == true)
{
// Check player missed
if(x_dir > 0) left_score++;
else right_score++;
// Restore ball in the center
ball.Move(display_drv.GetScreenW()/2, display_drv.GetScreenH()/2);
// Change direction
x_dir = -x_dir;
// Clear speed
speed = 0;
}
// Check Game Over
if((right_score > MAX_SCORE) || (left_score > MAX_SCORE))
{
game_over = true;
}
// Create score string
sprintf(scr_str, "%2u : %-2u", left_score, right_score);
// Unlock Display
display_drv.UnlockDisplay();
// Update Display
display_drv.UpdateDisplay();
// Pause until next tick
RtosTick::DelayUntilMs(last_wake_ticks, TICK_MS);
}
box_left.Hide();
box_right.Hide();
ball.Hide();
}
// Always run
return Result::RESULT_OK;
}
// *****************************************************************************
// *** MoveBall ************************************************************
// *****************************************************************************
bool Pong::MoveBall(Circle &ball, Box &box_left, Box &box_right)
{
bool ret = false;
int32_t dx=0, dy=0;
uint8_t move = speed;
while(move--)
{
// Check collision with right box
if( (ball.GetStartX()+dx+x_dir == box_left.GetEndX())
&& (ball.GetStartY()+dy < box_left.GetEndY())
&& (ball.GetEndY()+dy > box_left.GetStartY()) )
{
x_dir = -x_dir;
speed++;
}
// Check collision with left box
else if( (ball.GetEndX()+dx+x_dir == box_right.GetStartX())
&& (ball.GetStartY()+dy < box_right.GetEndY())
&& (ball.GetEndY()+dy > box_right.GetStartY()) )
{
x_dir = -x_dir;
speed++;
}
else if((ball.GetStartX()+x_dir >= 0) && (ball.GetEndX()+x_dir < display_drv.GetScreenW()))
{
dx += x_dir;
}
else
{
// Round over
ret = true;
break;
}
// Y move
if((ball.GetStartY()+dy+y_dir >= 0) && (ball.GetEndY()+dy+y_dir < display_drv.GetScreenH()))
{
dy += y_dir;
}
else
{
y_dir = -y_dir;
}
}
// Move object
ball.Move(dx, dy, true);
return ret;
}
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