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Diffstat (limited to 'backends/gp32/gp32std_input.cpp')
| -rw-r--r-- | backends/gp32/gp32std_input.cpp | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/backends/gp32/gp32std_input.cpp b/backends/gp32/gp32std_input.cpp new file mode 100644 index 0000000000..5a1ffcc0f9 --- /dev/null +++ b/backends/gp32/gp32std_input.cpp @@ -0,0 +1,210 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001-2005 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. + * + * $Header$ + * + */ + +#include "stdafx.h" +#include "common/scummsys.h" + +#include "backends/gp32/gp32std.h" +#include "backends/gp32/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; +} |