diff options
Diffstat (limited to 'nebu/input/input_system.c')
| -rw-r--r-- | nebu/input/input_system.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/nebu/input/input_system.c b/nebu/input/input_system.c new file mode 100644 index 0000000..5b934e2 --- /dev/null +++ b/nebu/input/input_system.c @@ -0,0 +1,167 @@ +#include "input/nebu_input_system.h" +#include "input/nebu_system_keynames.h" +#include "base/nebu_system.h" +#include "scripting/nebu_scripting.h" + +#include "SDL.h" +#include <stdlib.h> + +static float joystick_threshold = 0; + +void SystemGrabInput() { + SDL_WM_GrabInput(SDL_GRAB_ON); +} + +void SystemUngrabInput() { + SDL_WM_GrabInput(SDL_GRAB_OFF); +} + +void SystemWarpPointer(int x, int y) { + SDL_WarpMouse(x, y); +} + +void SystemHidePointer() { + SDL_ShowCursor(SDL_DISABLE); +} + +void SystemUnhidePointer() { + SDL_ShowCursor(SDL_ENABLE); +} + +void SystemMouse(int buttons, int state, int x, int y) { + if(current) + if(current->mouse != NULL) + current->mouse(buttons, state, x, y); +} + +void SystemMouseMotion(int x, int y) { + if(current) + if(current->mouseMotion != NULL) + current->mouseMotion(x, y); +} + +extern char* SystemGetKeyName(int key) { + if(key < SYSTEM_CUSTOM_KEYS) + return SDL_GetKeyName(key); + else { + int i; + + for(i = 0; i < CUSTOM_KEY_COUNT; i++) { + if(custom_keys.key[i].key == key) + return custom_keys.key[i].name; + } + return "unknown custom key"; + } +} + +void SystemHandleInput(SDL_Event *event) { + char *keyname; + int key, state; + // int skip_axis_event = 0; + static int joy_axis_state[2] = { 0, 0 }; + static int joy_lastaxis[2] = { 0, 0 }; + + switch(event->type) { + case SDL_KEYDOWN: + case SDL_KEYUP: + if(event->type == SDL_KEYDOWN) { + state = SYSTEM_KEYSTATE_DOWN; + } else { + state = SYSTEM_KEYSTATE_UP; + } + + keyname = SDL_GetKeyName(event->key.keysym.sym); + key = 0; + switch(event->key.keysym.sym) { + case SDLK_SPACE: key = ' '; break; + case SDLK_ESCAPE: key = 27; break; + case SDLK_RETURN: key = 13; break; + default: + if(keyname[1] == 0) key = keyname[0]; + break; + } + /* check: is that translation necessary? */ + if(key) + current->keyboard(state, key, 0, 0); + else + current->keyboard(state, event->key.keysym.sym, 0, 0); + break; + case SDL_JOYAXISMOTION: + if( abs(event->jaxis.value) <= joystick_threshold * SYSTEM_JOY_AXIS_MAX) { + // axis returned to origin, only generate event if it was set before + if(joy_axis_state[event->jaxis.which] & (1 << event->jaxis.axis)) { + joy_axis_state[event->jaxis.which] &= ~ + (1 << event->jaxis.axis); // clear axis + key = SYSTEM_JOY_LEFT + event->jaxis.which * SYSTEM_JOY_OFFSET; + if(event->jaxis.axis == 1) { + key += 2; + } + if(joy_lastaxis[event->jaxis.which] & (1 << event->jaxis.axis)) { + key++; + } + current->keyboard(SYSTEM_KEYSTATE_UP, key, 0, 0); + } else { + // do nothing + } + } else { + // axis set, only generate event if it wasn't set before + if(! (joy_axis_state[event->jaxis.which] & (1 << event->jaxis.axis)) ) { + joy_axis_state[event->jaxis.which] |= (1 << event->jaxis.axis); + key = SYSTEM_JOY_LEFT + event->jaxis.which * SYSTEM_JOY_OFFSET; + if(event->jaxis.axis == 1) { + key += 2; + } + if(event->jaxis.value > 0) { + key++; + joy_lastaxis[event->jaxis.which] |= (1 << event->jaxis.axis); + } else { + joy_lastaxis[event->jaxis.which] &= ~(1 << event->jaxis.axis); + } + current->keyboard(SYSTEM_KEYSTATE_DOWN, key, 0, 0); + } else { + // do nothing + } + } + break; + +#if 0 + if (abs(event->jaxis.value) <= joystick_threshold * SYSTEM_JOY_AXIS_MAX) { + skip_axis_event &= ~(1 << event->jaxis.axis); + break; + } + if(skip_axis_event & (1 << event->jaxis.axis)) + break; + skip_axis_event |= 1 << event->jaxis.axis; + key = SYSTEM_JOY_LEFT + event->jaxis.which * SYSTEM_JOY_OFFSET; + if(event->jaxis.axis == 1) + key += 2; + if(event->jaxis.value > 0) + key++; + current->keyboard(SYSTEM_KEYSTATE_DOWN, key, 0, 0); + break; +#endif + case SDL_JOYBUTTONDOWN: + case SDL_JOYBUTTONUP: + if(event->type == SDL_JOYBUTTONDOWN) + state = SYSTEM_KEYSTATE_DOWN; + else + state = SYSTEM_KEYSTATE_UP; + + key = SYSTEM_JOY_BUTTON_0 + event->jbutton.button + + SYSTEM_JOY_OFFSET * event->jbutton.which; + current->keyboard(state, key, 0, 0); + break; + case SDL_MOUSEBUTTONDOWN: + case SDL_MOUSEBUTTONUP: + SystemMouse(event->button.button, event->button.state, + event->button.x, event->button.y); + break; + case SDL_MOUSEMOTION: + SystemMouseMotion(event->motion.x, event->motion.y); + break; + } +} + +void SystemSetJoyThreshold(float f) { + joystick_threshold = f; +} |