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