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Lephisto/src/input.c

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C
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#include "lephisto.h"
#include "log.h"
#include "player.h"
#include "pause.h"
#include "toolkit.h"
#include "menu.h"
#include "board.h"
#include "input.h"
#define KEY_PRESS ( 1.)
#define KEY_RELEASE (-1.)
// Keybind structure.
typedef struct Keybind_ {
char* name; // Keybinding name, taken from keybindNames[]
KeybindType type; // type, defined in player.h.
unsigned int key; // Key/axis/button event number.
double reverse; // 1. if normal, -1 if reversed, only useful for joystick axis.
} Keybind;
static Keybind** input_keybinds; // Contains the players keybindings.
// Name of each keybinding.
const char* keybindNames[] = { "accel", "left", "right", "reverse", // Movement.
"primary", "target", "target_nearest", "face", "board", // Combat.
"secondary", "secondary_next", // Secondary weapons.
"target_planet", "land", "thyperspace", "jump", // Navigation.
"mapzoomin", "mapzoomout", "screenshot", "pause", "menu",
"info", // Misc.
"end" }; // Must terminate at the end.
// From player.c
extern double player_turn;
extern double player_acc;
extern unsigned int player_target;
// Grabbed from main.c
extern int show_fps;
// Set the default input keys.
void input_setDefault(void) {
// Movement.
input_setKeybind("accel", KEYBIND_KEYBOARD, SDLK_w, 0);
input_setKeybind("left", KEYBIND_KEYBOARD, SDLK_a, 0);
input_setKeybind("right", KEYBIND_KEYBOARD, SDLK_d, 0);
input_setKeybind("reverse", KEYBIND_KEYBOARD, SDLK_s, 0);
// Combat.
input_setKeybind("primary", KEYBIND_KEYBOARD, SDLK_SPACE, 0);
input_setKeybind("target", KEYBIND_KEYBOARD, SDLK_TAB, 0);
input_setKeybind("target_nearest", KEYBIND_KEYBOARD, SDLK_r, 0);
input_setKeybind("face", KEYBIND_KEYBOARD, SDLK_f, 0);
input_setKeybind("board", KEYBIND_KEYBOARD, SDLK_b, 0);
// Secondary weapon.
input_setKeybind("secondary", KEYBIND_KEYBOARD, SDLK_LSHIFT, 0);
input_setKeybind("secondary_next", KEYBIND_KEYBOARD, SDLK_q, 0);
// Space
input_setKeybind("target_planet", KEYBIND_KEYBOARD, SDLK_p, 0);
input_setKeybind("land", KEYBIND_KEYBOARD, SDLK_l, 0);
input_setKeybind("thyperspace", KEYBIND_KEYBOARD, SDLK_h, 0);
input_setKeybind("jump", KEYBIND_KEYBOARD, SDLK_j, 0);
// Misc.
input_setKeybind("mapzoomin", KEYBIND_KEYBOARD, SDLK_UP, 0);
input_setKeybind("mapzoomout", KEYBIND_KEYBOARD, SDLK_DOWN, 0);
input_setKeybind("screenshot", KEYBIND_KEYBOARD, SDLK_F12, 0);
input_setKeybind("pause", KEYBIND_KEYBOARD, SDLK_F1, 0);
input_setKeybind("menu", KEYBIND_KEYBOARD, SDLK_ESCAPE, 0);
input_setKeybind("info", KEYBIND_KEYBOARD, SDLK_i, 0);
}
// Initialization/exit functions (does not assign keys).
void input_init(void) {
Keybind* tmp;
int i;
for(i = 0; strcmp(keybindNames[i], "end"); i++); // Get number of bindings.
input_keybinds = malloc(i*sizeof(Keybind*));
// Create a null keybinding for each.
for(i = 0; strcmp(keybindNames[i], "end"); i++) {
tmp = MALLOC_L(Keybind);
tmp->name = (char*)keybindNames[i];
tmp->type = KEYBIND_NULL;
tmp->key = 0;
tmp->reverse = 1.;
input_keybinds[i] = tmp;
}
}
void input_exit(void) {
int i;
for(i = 0; strcmp(keybindNames[i], "end"); i++)
free(input_keybinds[i]);
free(input_keybinds);
}
// Binds key of type [type] to action keybind.
void input_setKeybind(char* keybind, KeybindType type, int key, int reverse) {
int i;
for(i = 0; strcmp(keybindNames[i], "end"); i++)
if(strcmp(keybind, input_keybinds[i]->name)==0) {
input_keybinds[i]->type = type;
input_keybinds[i]->key = key;
input_keybinds[i]->reverse = reverse ? -1. : 1.;
return;
}
WARN("Unable to set keybind '%s', That command does not exist.", keybind);
}
// == Run input method. ================================================
// keynum : Index of the input_keybinds keybind.
// value : Value of keypress (defined above).
// abs : Whether or not it's an abs value (For those pesky joysticks.
// =====================================================================
#define KEY(s) (strcmp(input_keybinds[keynum]->name, s)==0)
static void input_key(int keynum, double value, int abs) {
// Accelerating.
if(KEY("accel")) {
if(abs)player_acc = value;
else player_acc += value;
player_acc = ABS(player_acc); // Make sure value is sane.
}
// Turning left.
else if(KEY("left")) {
// Set flags for facing correction.
if(value == KEY_PRESS) player_setFlag(PLAYER_TURN_LEFT);
else if(value == KEY_RELEASE) player_rmFlag(PLAYER_TURN_LEFT);
if(abs)player_turn = -value;
else player_turn -= value;
if(player_turn < -1.) player_turn = -1.; // Make sure value is sane.
}
// Turning right.
else if(KEY("right")) {
// Set flags for facing correction.
if(value == KEY_PRESS) player_setFlag(PLAYER_TURN_RIGHT);
else if(value == KEY_RELEASE) player_rmFlag(PLAYER_TURN_RIGHT);
if(abs) player_turn = value;
else player_turn += value;
if(player_turn < -1.) player_turn = -1.; // Make sure value is sane.
}
// Turn around to face vel.
else if(KEY("reverse")) {
if(value == KEY_PRESS) player_setFlag(PLAYER_REVERSE);
else if(value == KEY_RELEASE) {
player_rmFlag(PLAYER_REVERSE);
player_turn = 0; // Turning corrections.
if(player_isFlag(PLAYER_TURN_LEFT)) player_turn -= 1;
if(player_isFlag(PLAYER_TURN_RIGHT)) player_turn += 1;
}
}
// Shoot primary weapon. BOOM BOOM.
else if(KEY("primary") && !paused) {
if(value == KEY_PRESS) player_setFlag(PLAYER_PRIMARY);
else if(value == KEY_RELEASE) player_rmFlag(PLAYER_PRIMARY);
}
// Targetting.
else if(KEY("target") && !paused) {
if(value == KEY_PRESS) player_target = pilot_getNext(player_target);
}
else if(KEY("target_nearest")) {
if(value == KEY_PRESS) player_target = pilot_getHostile();
}
// Face the target.
else if(KEY("face")) {
if(value == KEY_PRESS) player_setFlag(PLAYER_FACE);
else if(value == KEY_RELEASE) {
player_rmFlag(PLAYER_FACE);
// Turning corrections.
player_turn = 0;
if(player_isFlag(PLAYER_TURN_LEFT)) player_turn -= 1;
if(player_isFlag(PLAYER_TURN_RIGHT)) player_turn += 1;
}
}
// Board those ships.
else if(KEY("board") && !paused) {
if(value == KEY_PRESS) player_board();
}
// Shooting secondary weapon.
else if(KEY("secondary") && !paused) {
if(value == KEY_PRESS) player_setFlag(PLAYER_SECONDARY);
else if(value == KEY_RELEASE) player_rmFlag(PLAYER_SECONDARY);
}
// Selecting secondary weapon.
else if(KEY("secondary_next") && !paused) {
if(value == KEY_PRESS) player_secondaryNext();
}
// Space.
// Target planet (cycles just like target).
else if(KEY("target_planet") && !paused) {
if(value == KEY_PRESS) player_targetPlanet();
}
// Target nearest planet or attempt to land.
else if(KEY("land") && !paused) {
if(value == KEY_PRESS) player_land();
}
else if(KEY("thyperspace") && !paused) {
if(value == KEY_PRESS) player_targetHyperspace();
}
else if(KEY("jump") && !paused) {
if(value == KEY_PRESS) player_jump();
}
// Zoom in.
else if(KEY("mapzoomin")) {
if(value == KEY_PRESS) player_setRadarRel(1);
}
// Zoom out.
else if(KEY("mapzoomout")) {
if(value == KEY_PRESS) player_setRadarRel(-1);
}
// Take a screenshot.
else if(KEY("screenshot")) {
if(value == KEY_PRESS) player_screenshot();
}
// Pause the game.
else if(KEY("pause")) {
if(value == KEY_PRESS) {
if(!toolkit) {
if(paused) unpause();
} else pause();
}
}
// Opens a menu.
else if(KEY("menu")) {
if(value == KEY_PRESS) menu_small();
}
// Show pilot information.
else if(KEY("info")) {
if(value == KEY_PRESS) info_menu();
}
}
// --Events--
static void input_joyaxis(const unsigned int axis, const int value);
static void input_joydown(const unsigned int button);
static void input_joyup(const unsigned int button);
static void input_keydown(SDLKey key);
static void input_keyup(SDLKey key);
// Joystick.
// Axis.
static void input_joyaxis(const unsigned int axis, const int value) {
int i;
for(i = 0; strcmp(keybindNames[i], "end"); i++)
if(input_keybinds[i]->type == KEYBIND_JAXIS && input_keybinds[i]->key == axis) {
input_key(i, -(input_keybinds[i]->reverse) * (double)value / 32767., 1);
return;
}
}
// Joystick button down.
static void input_joydown(const unsigned int button) {
int i;
for(i = 0; strcmp(keybindNames[i], "end");i++)
if(input_keybinds[i]->type == KEYBIND_JBUTTON && input_keybinds[i]->key == button) {
input_key(i, KEY_RELEASE, 0);
return;
}
}
// Joystick button up.
static void input_joyup(const unsigned int button) {
int i;
for(i = 0; strcmp(keybindNames[i], "end"); i++)
if(input_keybinds[i]->type == KEYBIND_JBUTTON && input_keybinds[i]->key == button) {
input_key(i, KEY_RELEASE, 0);
return;
}
}
// Keyboard.
// Key down.
static void input_keydown(SDLKey key) {
int i;
for(i = 0; strcmp(keybindNames[i], "end"); i++)
if(input_keybinds[i]->type == KEYBIND_KEYBOARD && input_keybinds[i]->key == key) {
input_key(i, KEY_PRESS, 0);
return;
}
}
// Key up.
static void input_keyup(SDLKey key) {
int i;
for(i = 0; strcmp(keybindNames[i], "end"); i++)
if(input_keybinds[i]->type == KEYBIND_KEYBOARD && input_keybinds[i]->key == key) {
input_key(i, KEY_RELEASE, 0);
return;
}
}
// Global input.
// Just seperates the event types.
void input_handle(SDL_Event* event) {
if(toolkit) {
// Toolkit is handled seperately.
toolkit_input(event);
return;
}
switch(event->type) {
case SDL_JOYAXISMOTION:
input_joyaxis(event->jaxis.axis, event->jaxis.value);
break;
case SDL_JOYBUTTONDOWN:
input_joydown(event->jbutton.button);
break;
case SDL_JOYBUTTONUP:
input_joyup(event->jbutton.button);
break;
case SDL_KEYDOWN:
input_keydown(event->key.keysym.sym);
break;
case SDL_KEYUP:
input_keyup(event->key.keysym.sym);
break;
}
}
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