293 lines
8.3 KiB
C++
293 lines
8.3 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: pile.cpp
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// Purpose: Forty Thieves patience game
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// Author: Chris Breeze
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// Modified by:
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// Created: 21/07/97
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// Copyright: (c) 1993-1998 Chris Breeze
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// Licence: wxWindows licence
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//---------------------------------------------------------------------------
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// Last modified: 22nd July 1998 - ported to wxWidgets 2.0
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/////////////////////////////////////////////////////////////////////////////
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//+-------------------------------------------------------------+
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//| Description: |
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//| The base class for holding piles of playing cards. |
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//+-------------------------------------------------------------+
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#include "card.h"
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#include "pile.h"
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#include "forty.h"
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#include "canvas.h"
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#include "wx/app.h"
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//+-------------------------------------------------------------+
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//| Pile::Pile() |
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//+-------------------------------------------------------------+
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//| Description: |
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//| Initialise the pile to be empty of cards. |
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//+-------------------------------------------------------------+
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Pile::Pile(int x, int y, int dx, int dy)
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{
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m_x = x;
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m_y = y;
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m_dx = dx;
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m_dy = dy;
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for (m_topCard = 0; m_topCard < NumCards; m_topCard++)
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{
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m_cards[m_topCard] = 0;
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}
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m_topCard = -1; // i.e. empty
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}
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//+-------------------------------------------------------------+
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//| Pile::Redraw() |
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//+-------------------------------------------------------------+
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//| Description: |
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//| Redraw the pile on the screen. If the pile is empty |
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//| just draw a NULL card as a place holder for the pile. |
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//| Otherwise draw the pile from the bottom up, starting |
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//| at the origin of the pile, shifting each subsequent |
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//| card by the pile's x and y offsets. |
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//+-------------------------------------------------------------+
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void Pile::Redraw(wxDC& dc )
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{
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FortyFrame *frame = (FortyFrame*) wxTheApp->GetTopWindow();
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wxWindow *canvas = (wxWindow *) NULL;
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if (frame)
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{
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canvas = frame->GetCanvas();
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}
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if (m_topCard >= 0)
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{
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if (m_dx == 0 && m_dy == 0)
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{
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if ((canvas) && (canvas->IsExposed(m_x,m_y,(int)(Card::GetScale()*60),(int)(Card::GetScale()*200))))
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m_cards[m_topCard]->Draw(dc, m_x, m_y);
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}
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else
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{
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int x = m_x;
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int y = m_y;
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for (int i = 0; i <= m_topCard; i++)
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{
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if ((canvas) && (canvas->IsExposed(x,y,(int)(Card::GetScale()*60),(int)(Card::GetScale()*200))))
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m_cards[i]->Draw(dc, x, y);
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x += (int)Card::GetScale()*m_dx;
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y += (int)Card::GetScale()*m_dy;
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}
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}
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}
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else
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{
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if ((canvas) && (canvas->IsExposed(m_x,m_y,(int)(Card::GetScale()*60),(int)(Card::GetScale()*200))))
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Card::DrawNullCard(dc, m_x, m_y);
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}
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}
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//+-------------------------------------------------------------+
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//| Pile::GetTopCard() |
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//+-------------------------------------------------------------+
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//| Description: |
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//| Return a pointer to the top card in the pile or NULL |
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//| if the pile is empty. |
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//| NB: Gets a copy of the card without removing it from the |
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//| pile. |
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//+-------------------------------------------------------------+
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Card* Pile::GetTopCard()
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{
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Card* card = 0;
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if (m_topCard >= 0)
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{
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card = m_cards[m_topCard];
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}
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return card;
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}
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//+-------------------------------------------------------------+
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//| Pile::RemoveTopCard() |
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//+-------------------------------------------------------------+
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//| Description: |
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//| If the pile is not empty, remove the top card from the |
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//| pile and return the pointer to the removed card. |
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//| If the pile is empty return a NULL pointer. |
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//+-------------------------------------------------------------+
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Card* Pile::RemoveTopCard()
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{
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Card* card = 0;
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if (m_topCard >= 0)
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{
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card = m_cards[m_topCard--];
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}
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return card;
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}
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//+-------------------------------------------------------------+
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//| Pile::RemoveTopCard() |
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//+-------------------------------------------------------------+
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//| Description: |
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//| As RemoveTopCard() but also redraw the top of the pile |
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//| after the card has been removed. |
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//| NB: the offset allows for the redrawn area to be in a |
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//| bitmap ready for 'dragging' cards acrosss the screen. |
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//+-------------------------------------------------------------+
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Card* Pile::RemoveTopCard(wxDC& dc, int xOffset, int yOffset)
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{
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int topX, topY;
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GetTopCardPos(topX, topY);
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Card* card = RemoveTopCard();
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if (card)
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{
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int x, y;
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card->Erase(dc, topX - xOffset, topY - yOffset);
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GetTopCardPos(x, y);
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if (m_topCard < 0)
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{
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Card::DrawNullCard(dc, x - xOffset, y - yOffset);
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}
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else
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{
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m_cards[m_topCard]->Draw(dc, x - xOffset, y - yOffset);
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}
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}
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return card;
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}
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void Pile::GetTopCardPos(int& x, int& y)
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{
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if (m_topCard < 0)
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{
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x = m_x;
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y = m_y;
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}
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else
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{
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x = m_x + (int)Card::GetScale()*m_dx * m_topCard;
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y = m_y + (int)Card::GetScale()*m_dy * m_topCard;
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}
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}
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void Pile::AddCard(Card* card)
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{
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if (m_topCard < -1) m_topCard = -1;
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m_cards[++m_topCard] = card;
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}
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void Pile::AddCard(wxDC& dc, Card* card)
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{
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AddCard(card);
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int x, y;
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GetTopCardPos(x, y);
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card->Draw(dc, x, y);
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}
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// Can the card leave this pile.
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// If it is a member of the pile then the answer is yes.
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// Derived classes may override this behaviour to incorporate
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// the rules of the game
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bool Pile::CanCardLeave(Card* card)
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{
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for (int i = 0; i <= m_topCard; i++)
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{
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if (card == m_cards[i]) return true;
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}
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return false;
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}
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// Calculate how far x, y is from top card in the pile
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// Returns the square of the distance
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int Pile::CalcDistance(int x, int y)
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{
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int cx, cy;
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GetTopCardPos(cx, cy);
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return ((cx - x) * (cx - x) + (cy - y) * (cy - y));
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}
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// Return the card at x, y. Check the top card first, then
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// work down the pile. If a card is found then return a pointer
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// to the card, otherwise return NULL
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Card* Pile::GetCard(int x, int y)
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{
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int cardX;
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int cardY;
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GetTopCardPos(cardX, cardY);
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for (int i = m_topCard; i >= 0; i--)
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{
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if (x >= cardX && x <= cardX + Card::GetWidth() &&
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y >= cardY && y <= cardY + Card::GetHeight())
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{
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return m_cards[i];
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}
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cardX -= (int)Card::GetScale()*m_dx;
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cardY -= (int)Card::GetScale()*m_dy;
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}
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return 0;
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}
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// Return the position of the given card. If it is not a member of this pile
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// return the origin of the pile.
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void Pile::GetCardPos(Card* card, int& x, int& y)
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{
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x = m_x;
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y = m_y;
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for (int i = 0; i <= m_topCard; i++)
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{
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if (card == m_cards[i])
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{
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return;
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}
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x += (int)Card::GetScale()*m_dx;
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y += (int)Card::GetScale()*m_dy;
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}
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// card not found in pile, return origin of pile
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x = m_x;
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y = m_y;
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}
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bool Pile::Overlap(int x, int y)
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{
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int cardX;
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int cardY;
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GetTopCardPos(cardX, cardY);
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if (x >= cardX - Card::GetWidth() && x <= cardX + Card::GetWidth() &&
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y >= cardY - Card::GetHeight() && y <= cardY + Card::GetHeight())
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{
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return true;
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}
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return false;
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}
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