forked from KolibriOS/kolibrios
684 lines
17 KiB
C++
Executable File
684 lines
17 KiB
C++
Executable File
//
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// ID Engine
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// ID_IN.c - Input Manager
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// v1.0d1
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// By Jason Blochowiak
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//
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//
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// This module handles dealing with the various input devices
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//
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// Depends on: Memory Mgr (for demo recording), Sound Mgr (for timing stuff),
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// User Mgr (for command line parms)
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//
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// Globals:
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// LastScan - The keyboard scan code of the last key pressed
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// LastASCII - The ASCII value of the last key pressed
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// DEBUG - there are more globals
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//
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#include "wl_def.h"
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/*
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=============================================================================
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GLOBAL VARIABLES
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=============================================================================
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*/
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//
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// configuration variables
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//
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boolean MousePresent;
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boolean forcegrabmouse;
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// Global variables
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volatile boolean Keyboard[SDLK_LAST];
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volatile boolean Paused;
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volatile char LastASCII;
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volatile ScanCode LastScan;
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//KeyboardDef KbdDefs = {0x1d,0x38,0x47,0x48,0x49,0x4b,0x4d,0x4f,0x50,0x51};
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static KeyboardDef KbdDefs = {
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sc_Control, // button0
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sc_Alt, // button1
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sc_Home, // upleft
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sc_UpArrow, // up
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sc_PgUp, // upright
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sc_LeftArrow, // left
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sc_RightArrow, // right
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sc_End, // downleft
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sc_DownArrow, // down
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sc_PgDn // downright
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};
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static SDL_Joystick *Joystick;
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int JoyNumButtons;
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static int JoyNumHats;
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static bool GrabInput = false;
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static bool NeedRestore = false;
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/*
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=============================================================================
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LOCAL VARIABLES
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=============================================================================
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*/
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byte ASCIINames[] = // Unshifted ASCII for scan codes // TODO: keypad
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{
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// 0 1 2 3 4 5 6 7 8 9 A B C D E F
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,8 ,9 ,0 ,0 ,0 ,13 ,0 ,0 , // 0
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,27 ,0 ,0 ,0 , // 1
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' ',0 ,0 ,0 ,0 ,0 ,0 ,39 ,0 ,0 ,'*','+',',','-','.','/', // 2
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'0','1','2','3','4','5','6','7','8','9',0 ,';',0 ,'=',0 ,0 , // 3
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'`','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o', // 4
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'p','q','r','s','t','u','v','w','x','y','z','[',92 ,']',0 ,0 , // 5
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 6
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 // 7
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};
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byte ShiftNames[] = // Shifted ASCII for scan codes
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{
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// 0 1 2 3 4 5 6 7 8 9 A B C D E F
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,8 ,9 ,0 ,0 ,0 ,13 ,0 ,0 , // 0
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,27 ,0 ,0 ,0 , // 1
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' ',0 ,0 ,0 ,0 ,0 ,0 ,34 ,0 ,0 ,'*','+','<','_','>','?', // 2
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')','!','@','#','$','%','^','&','*','(',0 ,':',0 ,'+',0 ,0 , // 3
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'~','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O', // 4
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'P','Q','R','S','T','U','V','W','X','Y','Z','{','|','}',0 ,0 , // 5
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 6
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 // 7
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};
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byte SpecialNames[] = // ASCII for 0xe0 prefixed codes
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{
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// 0 1 2 3 4 5 6 7 8 9 A B C D E F
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 0
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,13 ,0 ,0 ,0 , // 1
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 2
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0 ,0 ,0 ,0 ,0 ,'/',0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 3
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 4
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 5
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 , // 6
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0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 // 7
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};
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static boolean IN_Started;
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static Direction DirTable[] = // Quick lookup for total direction
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{
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dir_NorthWest, dir_North, dir_NorthEast,
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dir_West, dir_None, dir_East,
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dir_SouthWest, dir_South, dir_SouthEast
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};
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///////////////////////////////////////////////////////////////////////////
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//
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// INL_GetMouseButtons() - Gets the status of the mouse buttons from the
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// mouse driver
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//
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///////////////////////////////////////////////////////////////////////////
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static int
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INL_GetMouseButtons(void)
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{
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int buttons = SDL_GetMouseState(NULL, NULL);
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int middlePressed = buttons & SDL_BUTTON(SDL_BUTTON_MIDDLE);
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int rightPressed = buttons & SDL_BUTTON(SDL_BUTTON_RIGHT);
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buttons &= ~(SDL_BUTTON(SDL_BUTTON_MIDDLE) | SDL_BUTTON(SDL_BUTTON_RIGHT));
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if(middlePressed) buttons |= 1 << 2;
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if(rightPressed) buttons |= 1 << 1;
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return buttons;
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_GetJoyDelta() - Returns the relative movement of the specified
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// joystick (from +/-127)
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//
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///////////////////////////////////////////////////////////////////////////
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void IN_GetJoyDelta(int *dx,int *dy)
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{
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if(!Joystick)
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{
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*dx = *dy = 0;
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return;
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}
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SDL_JoystickUpdate();
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#ifdef _arch_dreamcast
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int x = 0;
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int y = 0;
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#else
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int x = SDL_JoystickGetAxis(Joystick, 0) >> 8;
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int y = SDL_JoystickGetAxis(Joystick, 1) >> 8;
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#endif
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if(param_joystickhat != -1)
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{
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uint8_t hatState = SDL_JoystickGetHat(Joystick, param_joystickhat);
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if(hatState & SDL_HAT_RIGHT)
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x += 127;
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else if(hatState & SDL_HAT_LEFT)
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x -= 127;
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if(hatState & SDL_HAT_DOWN)
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y += 127;
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else if(hatState & SDL_HAT_UP)
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y -= 127;
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if(x < -128) x = -128;
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else if(x > 127) x = 127;
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if(y < -128) y = -128;
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else if(y > 127) y = 127;
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}
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*dx = x;
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*dy = y;
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_GetJoyFineDelta() - Returns the relative movement of the specified
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// joystick without dividing the results by 256 (from +/-127)
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//
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///////////////////////////////////////////////////////////////////////////
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void IN_GetJoyFineDelta(int *dx, int *dy)
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{
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if(!Joystick)
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{
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*dx = 0;
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*dy = 0;
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return;
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}
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SDL_JoystickUpdate();
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int x = SDL_JoystickGetAxis(Joystick, 0);
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int y = SDL_JoystickGetAxis(Joystick, 1);
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if(x < -128) x = -128;
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else if(x > 127) x = 127;
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if(y < -128) y = -128;
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else if(y > 127) y = 127;
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*dx = x;
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*dy = y;
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}
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/*
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===================
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=
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= IN_JoyButtons
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=
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===================
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*/
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int IN_JoyButtons()
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{
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if(!Joystick) return 0;
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SDL_JoystickUpdate();
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int res = 0;
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for(int i = 0; i < JoyNumButtons && i < 32; i++)
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res |= SDL_JoystickGetButton(Joystick, i) << i;
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return res;
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}
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boolean IN_JoyPresent()
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{
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return Joystick != NULL;
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}
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static void processEvent(SDL_Event *event)
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{
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switch (event->type)
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{
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// exit if the window is closed
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case SDL_QUIT:
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Quit(NULL);
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// check for keypresses
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case SDL_KEYDOWN:
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{
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if(event->key.keysym.sym==SDLK_SCROLLOCK || event->key.keysym.sym==SDLK_F12)
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{
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GrabInput = !GrabInput;
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SDL_WM_GrabInput(GrabInput ? SDL_GRAB_ON : SDL_GRAB_OFF);
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return;
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}
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LastScan = event->key.keysym.sym;
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SDLMod mod = SDL_GetModState();
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if(Keyboard[sc_Alt])
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{
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if(LastScan==SDLK_F4)
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Quit(NULL);
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}
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if(LastScan == SDLK_KP_ENTER) LastScan = SDLK_RETURN;
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else if(LastScan == SDLK_RSHIFT) LastScan = SDLK_LSHIFT;
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else if(LastScan == SDLK_RALT) LastScan = SDLK_LALT;
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else if(LastScan == SDLK_RCTRL) LastScan = SDLK_LCTRL;
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else
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{
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if((mod & KMOD_NUM) == 0)
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{
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switch(LastScan)
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{
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case SDLK_KP2: LastScan = SDLK_DOWN; break;
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case SDLK_KP4: LastScan = SDLK_LEFT; break;
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case SDLK_KP6: LastScan = SDLK_RIGHT; break;
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case SDLK_KP8: LastScan = SDLK_UP; break;
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}
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}
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}
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int sym = LastScan;
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if(sym >= 'a' && sym <= 'z')
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sym -= 32; // convert to uppercase
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if(mod & (KMOD_SHIFT | KMOD_CAPS))
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{
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if(sym < lengthof(ShiftNames) && ShiftNames[sym])
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LastASCII = ShiftNames[sym];
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}
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else
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{
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if(sym < lengthof(ASCIINames) && ASCIINames[sym])
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LastASCII = ASCIINames[sym];
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}
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if(LastScan<SDLK_LAST)
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Keyboard[LastScan] = 1;
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if(LastScan == SDLK_PAUSE)
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Paused = true;
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break;
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}
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case SDL_KEYUP:
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{
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int key = event->key.keysym.sym;
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if(key == SDLK_KP_ENTER) key = SDLK_RETURN;
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else if(key == SDLK_RSHIFT) key = SDLK_LSHIFT;
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else if(key == SDLK_RALT) key = SDLK_LALT;
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else if(key == SDLK_RCTRL) key = SDLK_LCTRL;
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else
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{
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if((SDL_GetModState() & KMOD_NUM) == 0)
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{
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switch(key)
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{
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case SDLK_KP2: key = SDLK_DOWN; break;
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case SDLK_KP4: key = SDLK_LEFT; break;
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case SDLK_KP6: key = SDLK_RIGHT; break;
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case SDLK_KP8: key = SDLK_UP; break;
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}
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}
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}
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if(key<SDLK_LAST)
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Keyboard[key] = 0;
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break;
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}
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case SDL_ACTIVEEVENT:
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{
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if(fullscreen && (event->active.state & SDL_APPACTIVE) != 0)
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{
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if(event->active.gain)
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{
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if(NeedRestore)
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{
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FreeLatchMem();
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LoadLatchMem();
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}
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NeedRestore = false;
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}
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else NeedRestore = true;
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}
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}
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#if defined(GP2X)
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case SDL_JOYBUTTONDOWN:
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GP2X_ButtonDown(event->jbutton.button);
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break;
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case SDL_JOYBUTTONUP:
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GP2X_ButtonUp(event->jbutton.button);
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break;
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#endif
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}
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}
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void IN_WaitAndProcessEvents()
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{
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SDL_Event event;
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if(!SDL_WaitEvent(&event)) return;
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do
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{
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processEvent(&event);
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}
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while(SDL_PollEvent(&event));
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}
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void IN_ProcessEvents()
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{
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SDL_Event event;
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while (SDL_PollEvent(&event))
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{
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processEvent(&event);
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}
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_Startup() - Starts up the Input Mgr
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//
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///////////////////////////////////////////////////////////////////////////
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void
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IN_Startup(void)
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{
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if (IN_Started)
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return;
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IN_ClearKeysDown();
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if(param_joystickindex >= 0 && param_joystickindex < SDL_NumJoysticks())
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{
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Joystick = SDL_JoystickOpen(param_joystickindex);
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if(Joystick)
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{
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JoyNumButtons = SDL_JoystickNumButtons(Joystick);
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if(JoyNumButtons > 32) JoyNumButtons = 32; // only up to 32 buttons are supported
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JoyNumHats = SDL_JoystickNumHats(Joystick);
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if(param_joystickhat < -1 || param_joystickhat >= JoyNumHats)
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Quit("The joystickhat param must be between 0 and %i!", JoyNumHats - 1);
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}
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}
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SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
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if(fullscreen || forcegrabmouse)
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{
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GrabInput = true;
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SDL_WM_GrabInput(SDL_GRAB_ON);
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}
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// I didn't find a way to ask libSDL whether a mouse is present, yet...
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#if defined(GP2X)
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MousePresent = false;
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#elif defined(_arch_dreamcast)
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MousePresent = DC_MousePresent();
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#else
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MousePresent = true;
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#endif
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IN_Started = true;
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_Shutdown() - Shuts down the Input Mgr
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//
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///////////////////////////////////////////////////////////////////////////
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void
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IN_Shutdown(void)
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{
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if (!IN_Started)
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return;
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if(Joystick)
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SDL_JoystickClose(Joystick);
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IN_Started = false;
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_ClearKeysDown() - Clears the keyboard array
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//
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///////////////////////////////////////////////////////////////////////////
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void
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IN_ClearKeysDown(void)
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{
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LastScan = sc_None;
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LastASCII = key_None;
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memset ((void *) Keyboard,0,sizeof(Keyboard));
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_ReadControl() - Reads the device associated with the specified
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// player and fills in the control info struct
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//
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///////////////////////////////////////////////////////////////////////////
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void
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IN_ReadControl(int player,ControlInfo *info)
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{
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word buttons;
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int dx,dy;
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Motion mx,my;
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dx = dy = 0;
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mx = my = motion_None;
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buttons = 0;
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IN_ProcessEvents();
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if (Keyboard[KbdDefs.upleft])
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mx = motion_Left,my = motion_Up;
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else if (Keyboard[KbdDefs.upright])
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mx = motion_Right,my = motion_Up;
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else if (Keyboard[KbdDefs.downleft])
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mx = motion_Left,my = motion_Down;
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else if (Keyboard[KbdDefs.downright])
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mx = motion_Right,my = motion_Down;
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if (Keyboard[KbdDefs.up])
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my = motion_Up;
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else if (Keyboard[KbdDefs.down])
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my = motion_Down;
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if (Keyboard[KbdDefs.left])
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mx = motion_Left;
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else if (Keyboard[KbdDefs.right])
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mx = motion_Right;
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if (Keyboard[KbdDefs.button0])
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buttons += 1 << 0;
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if (Keyboard[KbdDefs.button1])
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buttons += 1 << 1;
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dx = mx * 127;
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dy = my * 127;
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info->x = dx;
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info->xaxis = mx;
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info->y = dy;
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info->yaxis = my;
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info->button0 = (buttons & (1 << 0)) != 0;
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info->button1 = (buttons & (1 << 1)) != 0;
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info->button2 = (buttons & (1 << 2)) != 0;
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info->button3 = (buttons & (1 << 3)) != 0;
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info->dir = DirTable[((my + 1) * 3) + (mx + 1)];
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_WaitForKey() - Waits for a scan code, then clears LastScan and
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// returns the scan code
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//
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///////////////////////////////////////////////////////////////////////////
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ScanCode
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IN_WaitForKey(void)
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{
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ScanCode result;
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while ((result = LastScan)==0)
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IN_WaitAndProcessEvents();
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LastScan = 0;
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return(result);
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}
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///////////////////////////////////////////////////////////////////////////
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//
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// IN_WaitForASCII() - Waits for an ASCII char, then clears LastASCII and
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// returns the ASCII value
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//
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///////////////////////////////////////////////////////////////////////////
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char
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IN_WaitForASCII(void)
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{
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char result;
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|
|
|
while ((result = LastASCII)==0)
|
|
IN_WaitAndProcessEvents();
|
|
LastASCII = '\0';
|
|
return(result);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// IN_Ack() - waits for a button or key press. If a button is down, upon
|
|
// calling, it must be released for it to be recognized
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
boolean btnstate[NUMBUTTONS];
|
|
|
|
void IN_StartAck(void)
|
|
{
|
|
IN_ProcessEvents();
|
|
//
|
|
// get initial state of everything
|
|
//
|
|
IN_ClearKeysDown();
|
|
memset(btnstate, 0, sizeof(btnstate));
|
|
|
|
int buttons = IN_JoyButtons() << 4;
|
|
|
|
if(MousePresent)
|
|
buttons |= IN_MouseButtons();
|
|
|
|
for(int i = 0; i < NUMBUTTONS; i++, buttons >>= 1)
|
|
if(buttons & 1)
|
|
btnstate[i] = true;
|
|
}
|
|
|
|
|
|
boolean IN_CheckAck (void)
|
|
{
|
|
IN_ProcessEvents();
|
|
//
|
|
// see if something has been pressed
|
|
//
|
|
if(LastScan)
|
|
return true;
|
|
|
|
int buttons = IN_JoyButtons() << 4;
|
|
|
|
if(MousePresent)
|
|
buttons |= IN_MouseButtons();
|
|
|
|
for(int i = 0; i < NUMBUTTONS; i++, buttons >>= 1)
|
|
{
|
|
if(buttons & 1)
|
|
{
|
|
if(!btnstate[i])
|
|
{
|
|
// Wait until button has been released
|
|
do
|
|
{
|
|
IN_WaitAndProcessEvents();
|
|
buttons = IN_JoyButtons() << 4;
|
|
|
|
if(MousePresent)
|
|
buttons |= IN_MouseButtons();
|
|
}
|
|
while(buttons & (1 << i));
|
|
|
|
return true;
|
|
}
|
|
}
|
|
else
|
|
btnstate[i] = false;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
void IN_Ack (void)
|
|
{
|
|
IN_StartAck ();
|
|
|
|
do
|
|
{
|
|
IN_WaitAndProcessEvents();
|
|
}
|
|
while(!IN_CheckAck ());
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// IN_UserInput() - Waits for the specified delay time (in ticks) or the
|
|
// user pressing a key or a mouse button. If the clear flag is set, it
|
|
// then either clears the key or waits for the user to let the mouse
|
|
// button up.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
boolean IN_UserInput(longword delay)
|
|
{
|
|
longword lasttime;
|
|
|
|
lasttime = GetTimeCount();
|
|
IN_StartAck ();
|
|
do
|
|
{
|
|
IN_ProcessEvents();
|
|
if (IN_CheckAck())
|
|
return true;
|
|
SDL_Delay(5);
|
|
} while (GetTimeCount() - lasttime < delay);
|
|
return(false);
|
|
}
|
|
|
|
//===========================================================================
|
|
|
|
/*
|
|
===================
|
|
=
|
|
= IN_MouseButtons
|
|
=
|
|
===================
|
|
*/
|
|
int IN_MouseButtons (void)
|
|
{
|
|
if (MousePresent)
|
|
return INL_GetMouseButtons();
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
bool IN_IsInputGrabbed()
|
|
{
|
|
return GrabInput;
|
|
}
|
|
|
|
void IN_CenterMouse()
|
|
{
|
|
SDL_WarpMouse(screenWidth / 2, screenHeight / 2);
|
|
}
|