mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-13 21:31:53 +00:00
ea42bad781
svn-id: r20088
211 lines
5.2 KiB
C++
211 lines
5.2 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001-2006 The ScummVM project
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* Copyright (C) 2002 Ph0x - GP32 Backend
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* Copyright (C) 2003/2004 DJWillis - GP32 Backend
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* Copyright (C) 2005 Won Star - GP32 Backend
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "common/scummsys.h"
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#include "backends/gp32/gp32std.h"
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#include "backends/gp32/gp32std_input.h"
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static uint32 buttonState = 0;
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static uint16 buttonPressState = 0;
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#define GET_BUTTON_PRESSED(a) (buttonPressState & (a))
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#define ON_BUTTON_PRESSED(a) (buttonPressState |= (a))
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#define OFF_BUTTON_PRESSED(a) (buttonPressState &= ~(a))
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#define GET_BUTTON_DOWN(a) (buttonState & (a) << 12)
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#define ON_BUTTON_DOWN(a) buttonState |= ((a) << 12)
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#define OFF_BUTTON_DOWN(a) buttonState &= ~((a) << 12)
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#define GET_BUTTON_UP(a) (buttonState & (a))
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#define ON_BUTTON_UP(a) buttonState |= (a)
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#define OFF_BUTTON_UP(a) buttonState &= ~(a)
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#define rKEY_A 0x4000
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#define rKEY_B 0x2000
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#define rKEY_L 0x1000
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#define rKEY_R 0x8000
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#define rKEY_UP 0x0800
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#define rKEY_DOWN 0x0200
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#define rKEY_LEFT 0x0100
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#define rKEY_RIGHT 0x0400
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#define rKEY_START 0x0040
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#define rKEY_SELECT 0x0080
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#define rPBDAT (*(volatile unsigned *)0x1560000c)
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#define rPEDAT (*(volatile unsigned *)0x15600030)
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/****************************************************************
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GP32 Input mappings - Returns Button Pressed.
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****************************************************************/
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int gp_trapKey() {
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int value = 0;
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unsigned long gpb = rPBDAT; // 0x156
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unsigned long gpe = rPEDAT;
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if ((gpb & rKEY_LEFT) == 0)
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value |= GPC_VK_LEFT;
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if ((gpb & rKEY_RIGHT) == 0)
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value |= GPC_VK_RIGHT;
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if ((gpb & rKEY_UP) == 0)
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value |= GPC_VK_UP;
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if ((gpb & rKEY_DOWN) == 0)
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value |= GPC_VK_DOWN;
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if ((gpb & rKEY_A) == 0)
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value |= GPC_VK_FA;
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if ((gpb & rKEY_B) == 0)
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value |= GPC_VK_FB;
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if ((gpb & rKEY_L) == 0)
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value |= GPC_VK_FL;
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if ((gpb & rKEY_R) == 0)
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value |= GPC_VK_FR;
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if ((gpe & rKEY_SELECT) == 0)
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value |= GPC_VK_SELECT;
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if ((gpe & rKEY_START) == 0)
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value |= GPC_VK_START;
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return value;
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}
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bool gp_getButtonEvent(uint32 *nKeyUD, uint16 *nKeyP) {
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// int nKey = GpKeyGet();
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int nKey = gp_trapKey();
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const int keyBitMask[10] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x100, 0x200};
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for (int i = 0; i < 10; i++) {
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OFF_BUTTON_DOWN(keyBitMask[i]);
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OFF_BUTTON_UP(keyBitMask[i]);
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if (nKey & keyBitMask[i]) {
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if (!GET_BUTTON_PRESSED(keyBitMask[i])) {
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// GPDEBUG("DOWN %d", i);
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ON_BUTTON_PRESSED(keyBitMask[i]);
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ON_BUTTON_DOWN(keyBitMask[i]);
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}
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} else {
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if (GET_BUTTON_PRESSED(keyBitMask[i])) {
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// GPDEBUG("UP %d", i);
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OFF_BUTTON_PRESSED(keyBitMask[i]);
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ON_BUTTON_UP(keyBitMask[i]);
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}
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}
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}
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// GPDEBUG("%08x %04x", buttonState, buttonPressState);
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*nKeyUD = buttonState;
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*nKeyP = buttonPressState;
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return true;
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}
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#define MAX_EVENTS 32
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struct EventQueue {
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protected:
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int front, rear;
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int numElement;
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GP32BtnEvent event[MAX_EVENTS];
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public:
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void push(GP32BtnEvent *ev) {
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if ((rear + 1) % MAX_EVENTS == front) {
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GPDEBUG("Queue Overflow!");
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return;
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}
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numElement++;
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event[rear].type = ev->type;
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event[rear].button = ev->button;
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rear = (rear + 1) % MAX_EVENTS;
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}
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bool isEmpty() {
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return (numElement == 0);
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}
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bool isFull() {
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return (numElement == MAX_EVENTS);
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}
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bool get(GP32BtnEvent *ev) {
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if (front == rear) {
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return false;
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}
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numElement--;
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ev->type = event[front].type;
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ev->button = event[front].button;
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front = (front + 1) % MAX_EVENTS;
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return true;
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}
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};
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EventQueue eventQueue;
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bool gp_pumpButtonEvent() {
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int nKey = gp_trapKey();
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GP32BtnEvent ev;
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const int keyBitMask[10] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x100, 0x200};
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for (int i = 0; i < 10; i++) {
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if (nKey & keyBitMask[i]) {
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if (!GET_BUTTON_PRESSED(keyBitMask[i])) {
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ON_BUTTON_PRESSED(keyBitMask[i]);
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ev.type = BUTTON_DOWN;
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ev.button = keyBitMask[i];
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eventQueue.push(&ev);
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//ON_BUTTON_DOWN(keyBitMask[i]);
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}
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} else {
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if (GET_BUTTON_PRESSED(keyBitMask[i])) {
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OFF_BUTTON_PRESSED(keyBitMask[i]);
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ev.type = BUTTON_UP;
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ev.button = keyBitMask[i];
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eventQueue.push(&ev);
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//ON_BUTTON_UP(keyBitMask[i]);
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}
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}
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}
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return true;
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}
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bool gp_pollButtonEvent(GP32BtnEvent *ev) {
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gp_pumpButtonEvent();
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if(eventQueue.isEmpty()) {
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return false;
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}
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eventQueue.get(ev);
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// GPDEBUG("Event poll %d %d", ev->type, ev->button);
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return true;
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}
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bool gp_getButtonPressed(uint16 button)
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{
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return buttonPressState & button;
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}
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