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GameStar Special 2004 August
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pad.d
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2004-05-15
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/*
* $Id: pad.d,v 1.2 2004/05/14 14:35:39 kenta Exp $
*
* Copyright 2003 Kenta Cho. All rights reserved.
*/
module abagames.util.sdl.pad;
private import std.string;
private import SDL;
private import abagames.util.sdl.input;
private import abagames.util.sdl.sdlexception;
/**
* Joystick and keyboard input.
*/
public class Pad: Input {
public:
static const int PAD_UP = 1;
static const int PAD_DOWN = 2;
static const int PAD_LEFT = 4;
static const int PAD_RIGHT = 8;
static const int PAD_BUTTON1 = 16;
static const int PAD_BUTTON2 = 32;
Uint8 *keys;
bool buttonReversed = false;
private:
SDL_Joystick *stick = null;
const int JOYSTICK_AXIS = 16384;
public void openJoystick() {
if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0) {
throw new SDLInitFailedException(
"Unable to init SDL joystick: " ~ std.string.toString(SDL_GetError()));
}
stick = SDL_JoystickOpen(0);
}
public void handleEvent(SDL_Event *event) {
keys = SDL_GetKeyState(null);
}
// Joystick and keyboard handler.
public int getPadState() {
int x = 0, y = 0;
int pad = 0;
if (stick) {
x = SDL_JoystickGetAxis(stick, 0);
y = SDL_JoystickGetAxis(stick, 1);
}
if (keys[SDLK_RIGHT] == SDL_PRESSED || keys[SDLK_KP6] == SDL_PRESSED ||
keys[SDLK_d] == SDL_PRESSED || x > JOYSTICK_AXIS) {
pad |= PAD_RIGHT;
}
if (keys[SDLK_LEFT] == SDL_PRESSED || keys[SDLK_KP4] == SDL_PRESSED ||
keys[SDLK_a] == SDL_PRESSED || x < -JOYSTICK_AXIS) {
pad |= PAD_LEFT;
}
if (keys[SDLK_DOWN] == SDL_PRESSED || keys[SDLK_KP2] == SDL_PRESSED ||
keys[SDLK_s] == SDL_PRESSED || y > JOYSTICK_AXIS) {
pad |= PAD_DOWN;
}
if (keys[SDLK_UP] == SDL_PRESSED || keys[SDLK_KP8] == SDL_PRESSED ||
keys[SDLK_w] == SDL_PRESSED || y < -JOYSTICK_AXIS) {
pad |= PAD_UP;
}
return pad;
}
public int getButtonState() {
int btn = 0;
int btn1 = 0, btn2 = 0, btn3 = 0, btn4 = 0, btn5 = 0, btn6 = 0, btn7 = 0, btn8 = 0;
if (stick) {
btn1 = SDL_JoystickGetButton(stick, 0);
btn2 = SDL_JoystickGetButton(stick, 1);
btn3 = SDL_JoystickGetButton(stick, 2);
btn4 = SDL_JoystickGetButton(stick, 3);
btn5 = SDL_JoystickGetButton(stick, 4);
btn6 = SDL_JoystickGetButton(stick, 5);
btn7 = SDL_JoystickGetButton(stick, 6);
btn8 = SDL_JoystickGetButton(stick, 7);
}
if (keys[SDLK_z] == SDL_PRESSED || keys[SDLK_PERIOD] == SDL_PRESSED ||
keys[SDLK_LCTRL] == SDL_PRESSED ||
btn1 || btn4 || btn5 || btn8) {
if (!buttonReversed)
btn |= PAD_BUTTON1;
else
btn |= PAD_BUTTON2;
}
if (keys[SDLK_x] == SDL_PRESSED || keys[SDLK_SLASH] == SDL_PRESSED ||
keys[SDLK_LALT] == SDL_PRESSED || keys[SDLK_LSHIFT] == SDL_PRESSED ||
btn2 || btn3 || btn6 || btn7) {
if (!buttonReversed)
btn |= PAD_BUTTON2;
else
btn |= PAD_BUTTON1;
}
return btn;
}
}