From 54beb595dce72b82fb450f75c5b0b8e6100d24ef Mon Sep 17 00:00:00 2001
From: Allanis <allanis@saracraft.net>
Date: Sat, 2 Feb 2013 21:13:25 +0000
Subject: [PATCH] [Add] Dynamic key bindind loading from configuration file.
---
bin/conf.example | 15 +++
src/log.h | 1 +
src/main.c | 103 +++++++++++++++++----
src/opengl.c | 29 ++++--
src/opengl.h | 1 +
src/player.c | 231 ++++++++++++++++++++++++++++-------------------
src/player.h | 11 +--
src/space.c | 8 +-
8 files changed, 269 insertions(+), 130 deletions(-)
create mode 100644 bin/conf.example
diff --git a/bin/conf.example b/bin/conf.example
new file mode 100644
index 0000000..b89c21b
--- /dev/null
+++ b/bin/conf.example
@@ -0,0 +1,15 @@
+--WINDOW.
+width = 800
+height = 640
+fullscreen = 0
+
+-- JOYSTICK.
+-- Can be number or substring of joystick name.
+joystick = "Precision"
+
+-- KEYBINDINGS.
+-- Type can be keyboard, jaxis or jbutton.
+accel = { type = "jbutton", key = 0 }
+left = { type = "jaxis", key = 0 }
+right = { type = "jaxis", key = 0 }
+
diff --git a/src/log.h b/src/log.h
index 0e3acf7..a727791 100644
--- a/src/log.h
+++ b/src/log.h
@@ -4,6 +4,7 @@
#define LOG(str, args...)(fprintf(stdout, str"\n", ## args))
#define WARN(str, args...)(fprintf(stderr, "[%d] "str"\n", SDL_GetTicks(), ## args))
+#define ERR(str, args...) (fprintf(stderr, "%s:%d: "str"\n", __FILE__, __LINE__, ## args))
#ifdef DEBUG
# undef DEBUG
diff --git a/src/main.c b/src/main.c
index e75fec0..e8c3d32 100644
--- a/src/main.c
+++ b/src/main.c
@@ -18,14 +18,14 @@
#include "ai.h"
#include "pilot.h"
-#define WINDOW_CAPTION "Lephisto"
-#define CONF_FILE "conf"
+#define WINDOW_CAPTION "Lephisto"
+#define CONF_FILE "conf"
+#define MINIMUM_FPS 0.5
-static gl_font fdefault;
+extern const char* keybindNames[]; // Keybindings.
-static int quit = 0;
-
-static unsigned int time = 0;
+static int quit = 0; // Primary loop.
+static unsigned int time = 0; // Calculate FPS and movement.
// Prototypes.
@@ -49,6 +49,9 @@ static void print_usage(char** argv) {
}
int main(int argc, char** argv) {
+ int i;
+ // Initialize SDL for possible warnings.
+ SDL_Init(0);
// Default values..
gl_screen.w = 800;
gl_screen.h = 640;
@@ -57,10 +60,19 @@ int main(int argc, char** argv) {
int indjoystick = -1;
char* namjoystick = NULL;
+ // input.
+ input_init();
+ input_setKeybind("accel", KEYBIND_KEYBOARD, SDLK_UP, 0);
+ input_setKeybind("accel", KEYBIND_KEYBOARD, SDLK_w, 0);
+ input_setKeybind("left", KEYBIND_KEYBOARD, SDLK_LEFT, 0);
+ input_setKeybind("left", KEYBIND_KEYBOARD, SDLK_a, 0);
+ input_setKeybind("right", KEYBIND_KEYBOARD, SDLK_RIGHT, 0);
+ input_setKeybind("right", KEYBIND_KEYBOARD, SDLK_d, 0);
+
// Use Lua to parse configuration file.
lua_State* L = luaL_newstate();
- if(luaL_dofile(L, CONF_FILE) == 0) {
- // OpenGL.
+ if(luaL_dofile(L, CONF_FILE) == 0) { // Conf file exists.
+ // OpenGL properties.
lua_getglobal(L, "width");
if(lua_isnumber(L, -1))
gl_screen.w = (int)lua_tonumber(L, -1);
@@ -78,6 +90,45 @@ int main(int argc, char** argv) {
indjoystick = (int)lua_tonumber(L, -1);
else if(lua_isstring(L, -1))
namjoystick = strdup((char*)lua_tostring(L, -1));
+
+ // Grab the keybindings if there are any.
+ char* str;
+ int type, key, reverse;
+ for(i = 0; keybindNames[i]; i++) {
+ lua_getglobal(L, keybindNames[i]);
+ str = NULL;
+ key = -1;
+ reverse = 0;
+ if(lua_istable(L, -1)) { // It's a table alright.
+ // Get the event type.
+ lua_pushstring(L, "type");
+ lua_gettable(L, -2);
+ if(lua_isstring(L, -1))
+ str = (char*)lua_tostring(L, -1);
+
+ // Get the key.
+ lua_pushstring(L, "key");
+ lua_gettable(L, -3);
+ if(lua_isnumber(L, -1))
+ str = (int)lua_tonumber(L, -1);
+
+ // Is it reversed? Only useful for axis.
+ lua_pushstring(L, "reverse");
+ lua_gettable(L, -4);
+ if(lua_isnumber(L, -1))
+ reverse = 1;
+
+ if(key != -1 && str != NULL) { // Keybind is valid!
+ // Get the type.
+ if(strcmp(str, "null")==0) type = KEYBIND_NULL;
+ else if(strcmp(str, "keyboard")==0) type = KEYBIND_KEYBOARD;
+ else if(strcmp(str, "jaxis")==0) type = KEYBIND_JAXIS;
+ else if(strcmp(str, "jbutton")==0) type = KEYBIND_JBUTTON;
+ // Set the keybind.
+ input_setKeybind((char*)keybindNames[i], type, key, reverse);
+ } else WARN("Malformed keybind in %s", CONF_FILE);
+ }
+ }
}
lua_close(L);
@@ -105,8 +156,6 @@ int main(int argc, char** argv) {
// Random numbers.
rng_init();
- // SDL_Init is first called here, so it's important to be
- // initialized first.
if(gl_init()) {
// Initializes video output.
WARN("Error initializing video output, exiting...");
@@ -132,7 +181,7 @@ int main(int argc, char** argv) {
if(ai_init())
WARN("Error initializing AI");
- gl_fontInit(&fdefault, "../gfx/fonts/FreeSans.ttf", 16);
+ gl_fontInit(NULL, "../gfx/fonts/FreeSans.ttf", 16);
// Data loading.
ships_load();
@@ -149,35 +198,51 @@ int main(int argc, char** argv) {
// Main looops.
SDL_Event event;
+ // flushes the event loop, since I notices that when the joystick is loaded, it
+ // creates button events that results in the player starting out accelerating.
+ while(SDL_PollEvent(&event));
while(!quit) {
// Event loop.
while(SDL_PollEvent(&event)) {
if(event.type == SDL_QUIT) quit = 1; // Handle quit.
- handle_input(&event);
+ input_handle(&event); // handles all the events the player keybinds.
}
update_all();
}
- space_exit();
// Unload data.
- pilots_free();
+ space_exit(); // Clean up the universe!!!
+ pilots_free(); // Free the pilots, they where locked up D:
ships_free();
- gl_freeFont(&fdefault);
+ gl_freeFont(NULL);
// Exit subsystems.
- joystick_exit();
- gl_exit(); // Kills video output.
+ ai_exit(); // Stop the Lua AI magicness.
+ joystick_exit(); // Release joystick.
+ input_exit(); // Clean up keybindings.
+ gl_exit(); // Kills video output.
exit(EXIT_SUCCESS);
}
// Update all the things.
+// Space:
+// -- Stars.
+// -- Movement.
+// -- Render.
// Pilots:
// -- Think (ai).
// -- Solid.
static void update_all(void) {
double dt = (double)(SDL_GetTicks() - time) / 1000.0;
time = SDL_GetTicks();
+
+ if(dt > MINIMUM_FPS) {
+ Vec2 pos = { .x = 10., .y = gl_screen.h-40 };
+ gl_print(NULL, &pos, "FPS is really low! Skipping frames.");
+ SDL_GL_SwapBuffers();
+ }
+
glClear(GL_COLOR_BUFFER_BIT);
space_render(dt);
@@ -188,6 +253,8 @@ static void update_all(void) {
SDL_GL_SwapBuffers();
}
+
+// Spit this out on display.
static double fps = 0.;
static double fps_cur = 0.;
static double fps_dt = 1.;
@@ -199,6 +266,6 @@ static void display_fps(const double dt) {
fps_dt = fps_cur = 0.;
}
Vec2 pos = { .x = 10., .y = (double)(gl_screen.h-20) };
- gl_print(&fdefault, &pos, "%3.2f", fps);
+ gl_print(NULL, &pos, "%3.2f", fps);
}
diff --git a/src/opengl.c b/src/opengl.c
index 10c1cd7..899e7d6 100644
--- a/src/opengl.c
+++ b/src/opengl.c
@@ -20,9 +20,12 @@ gl_info gl_screen;
// Our precious camera.
Vec2* gl_camera;
+// Default font.
+gl_font gl_defFont;
+
// Misc.
-static int flip_surface(SDL_Surface* surface);
-static int pot(int n);
+static int _flip_surface(SDL_Surface* surface);
+static int _pot(int n);
// gl_texture.
static GLuint gl_loadSurface(SDL_Surface* surface, int* rw, int* rh);
// Gl font.
@@ -33,7 +36,7 @@ static void gl_fontMakeDList(FT_Face face, char ch, GLuint list_base, GLuint* te
// ================
// Get me the closest power of two plox.
-static int pot(int n) {
+static int _pot(int n) {
int i = 1;
while(i < n)
i<<=1;
@@ -41,7 +44,7 @@ static int pot(int n) {
}
// Flips the surface vertically. Return 0 on success.
-static int flip_surface(SDL_Surface* surface) {
+static int _flip_surface(SDL_Surface* surface) {
// Flip the image.
Uint8* rowhi, *rowlo, *tmpbuf;
int y;
@@ -80,8 +83,8 @@ static GLuint gl_loadSurface(SDL_Surface* surface, int* rw, int* rh) {
int potw, poth;
// Make size power of two.
- potw = pot(surface->w);
- poth = pot(surface->h);
+ potw = _pot(surface->w);
+ poth = _pot(surface->h);
if(rw)*rw = potw;
if(rh)*rh = poth;
@@ -198,7 +201,7 @@ gl_texture* gl_newImage(const char* path) {
SDL_FreeSurface(tmp); // Free the temp surface.
- if(flip_surface(surface)) {
+ if(_flip_surface(surface)) {
WARN("Error flipping surface");
return NULL;
}
@@ -301,11 +304,14 @@ void gl_bindCamera(const Vec2* pos) {
}
// Print text on screen! YES!!!! Just like printf! But different!
+// Defaults ft_font to gl_defFont if NULL.
void gl_print(const gl_font* ft_font, const Vec2* pos, const char* fmt, ...) {
//float h = ft_font->h / .63; // Slightly increases font size.
char text[256];
va_list ap;
+ if(ft_font == NULL) ft_font = &gl_defFont;
+
if(fmt == NULL) return;
else {
// convert the symbols to text.
@@ -353,8 +359,8 @@ static void gl_fontMakeDList(FT_Face face, char ch, GLuint list_base, GLuint* te
bitmap = bitmap_glyph->bitmap; // To simplify.
// Need the POT wrapping for GL.
- w = pot(bitmap.width);
- h = pot(bitmap.rows);
+ w = _pot(bitmap.width);
+ h = _pot(bitmap.rows);
// Memory for textured data.
// Bitmap is useing two channels, one for luminosity and one for alpha.
@@ -406,6 +412,8 @@ static void gl_fontMakeDList(FT_Face face, char ch, GLuint list_base, GLuint* te
}
void gl_fontInit(gl_font* font, const char* fname, unsigned int h) {
+ if(font == NULL) font = &gl_defFont;
+
font->textures = malloc(sizeof(GLuint)*128);
font->h = h;
@@ -438,6 +446,7 @@ void gl_fontInit(gl_font* font, const char* fname, unsigned int h) {
}
void gl_freeFont(gl_font* font) {
+ if(font == NULL) font = &gl_defFont;
glDeleteLists(font->list_base, 128);
glDeleteTextures(128, font->textures);
free(font->textures);
@@ -455,7 +464,7 @@ int gl_init(void) {
flags |= SDL_FULLSCREEN * gl_screen.fullscreen;
// Initializes video.
- if(SDL_Init(SDL_INIT_VIDEO) < 0) {
+ if(SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
WARN("Unable to initialize SDL: %s", SDL_GetError());
return -1;
}
diff --git a/src/opengl.h b/src/opengl.h
index f9613f5..fb0866f 100644
--- a/src/opengl.h
+++ b/src/opengl.h
@@ -45,6 +45,7 @@ typedef struct {
} gl_font;
// gl_font loading/freeing.
+// If font is NULL it uses the internal default font, same with gl_print
void gl_fontInit(gl_font* font, const char* fname, unsigned int h);
void gl_freeFont(gl_font* font);
diff --git a/src/player.c b/src/player.c
index 550b758..161a641 100644
--- a/src/player.c
+++ b/src/player.c
@@ -1,139 +1,188 @@
+#include <malloc.h>
#include "def.h"
#include "pilot.h"
#include "log.h"
#include "player.h"
-Pilot* player = NULL;
-static unsigned int player_flags = PLAYER_FLAG_NULL;
+#define KEY_PRESS 1.
+#define KEY_RELEASE -1.
-static double player_turn = 0.;
-static double player_acc = 0.;
+// Keybind structure.
+typedef struct {
+ char* name; // Keybinding name, taken from keybindNames[]
+ KeybindType type; // type, defined in player.h.
+ int key; // Key/axis/button event number.
+ double reverse; // 1. if normal, -1 if reversed, only useful for joystick axis.
+} Keybind;
+static Keybind** player_input; // Contains the players keybindings.
+// Name of each keybinding.
+const char* keybindNames[] = { "accel", "left", "right" };
-// To be used in pilot.c
+Pilot* player = NULL; // extern in pilot.h
+static double player_turn = 0.; // Turn velocity from input.
+static double player_acc = 0.; // Accel velocity from input.
+
+// Used in pilot.c
+// Basically uses keyboard input instead of AI input.
void player_think(Pilot* player, const double dt) {
player->solid->dir_vel = 0.;
if(player_turn)
- player->solid->dir_vel -= player->ship->turn*player_turn/(double)(1<<15);
-#if 0
- if(player_isFlag(PLAYER_FLAG_MOV_LEFT))
- player->solid->dir_vel += player->ship->turn;
- if(player_isFlag(PLAYER_FLAG_MOV_RIGHT))
- player->solid->dir_vel -= player->ship->turn;
-#endif
+ player->solid->dir_vel -= player->ship->turn * player_turn;
- player->solid->force = player->ship->thrust*player_acc/(double)(1<<15);
+ player->solid->force = player->ship->thrust * player_acc;
}
-// Flag manipulationz.
-int player_isFlag(unsigned int flag) {
- return player_flags & flag;
+// Initialization/exit functions (does not assign keys).
+void input_init(void) {
+ Keybind* tmp;
+ int i;
+ for(i = 0; keybindNames[i]; i++); // Get number of bindings.
+ player_input = (Keybind**)malloc(i*sizeof(Keybind*));
+
+ // Create a null keybinding for each.
+ for(i = 0; keybindNames[i]; i++) {
+ tmp = MALLOC_L(Keybind);
+ tmp->name = (char*)keybindNames[i];
+ tmp->type = KEYBIND_NULL;
+ tmp->key = 0;
+ tmp->reverse = 1.;
+ player_input[i] = tmp;
+ }
}
-void player_setFlag(unsigned int flag) {
- if(!player_isFlag(flag))
- player_flags |= flag;
+void input_exit(void) {
+ int i;
+ for(i = 0; keybindNames[i]; i++)
+ free(player_input[i]);
+ free(player_input);
}
-void player_rmFlag(unsigned int flag) {
- if(player_isFlag(flag))
- player_flags ^= flag;
+// Binds key of type [type] to action keybind.
+void input_setKeybind(char* keybind, KeybindType type, int key, int reverse) {
+ int i;
+ for(i = 0; keybindNames[i]; i++) {
+ if(strcmp(keybind, player_input[i]->name)==0) {
+ player_input[i]->type = type;
+ player_input[i]->key = key;
+ player_input[i]->reverse = reverse ? -1. : 1.;
+ return;
+ }
+ }
+}
+
+// == Run input method. ================================================
+// keynum : Index of the player_input keybind.
+// value : Value of keypress (defined above).
+// abs : Whether or not it's an abs value (For those pesky joysticks.
+// =====================================================================
+static void input_key(int keynum, double value, int abs) {
+ if(strcmp(player_input[keynum]->name, "accel")==0) {
+ if(abs)player_acc = value;
+ else player_acc += value;
+ }
+ else if(strcmp(player_input[keynum]->name, "left")==0) {
+ if(abs)player_turn = -value;
+ else player_turn -= value;
+ }
+ else if(strcmp(player_input[keynum]->name, "right")==0) {
+ if(abs) player_turn = value;
+ else player_turn += value;
+ }
+
+ //Make sure values are sane.
+ player_acc = ABS(player_acc);
+ if(player_acc > 1.) player_acc = 1.;
+ if(player_turn > 1.) player_turn = 1.;
+ else if(player_turn < -1.) player_turn = -1.;
}
// --Events--
+static void input_joyaxis(int axis, int value);
+static void input_joydown(int button);
+static void input_joyup(int button);
+static void input_keydown(SDLKey key);
+static void input_keyup(SDLKey key);
+
// Joystick.
-static void handle_joyaxis(int axis, int value) {
- switch(axis) {
- case 0:
- player_turn = (double)value;
- break;
- case 1:
- if(value <= 0)
- player_acc = (double)-value;
- break;
- }
+
+// Axis.
+static void input_joyaxis(int axis, int value) {
+ int i;
+ for(i = 0; keybindNames[i]; i++)
+ if(player_input[i]->type == KEYBIND_JAXIS && player_input[i]->key == axis) {
+ input_key(i, -(player_input[i]->reverse) * (double)value / 32767., 1);
+ return;
+ }
}
-static void handle_joydown(int button) {
- switch(button) {
- case 0:
- player_acc += (double)(1<<15);
- break;
- case 1:
- break;
- }
+// Joystick button down.
+static void input_joydown(int button) {
+ int i;
+ for(i = 0; keybindNames[i]; i++)
+ if(player_input[i]->type == KEYBIND_JBUTTON && player_input[i]->key == button) {
+ input_key(i, KEY_RELEASE, 0);
+ return;
+ }
}
-static void handle_joyup(int button) {
- switch(button) {
- case 0:
- player_acc -=(double)(1<<15);
- break;
- case 1:
- break;
- }
+// Joystick button up.
+static void input_joyup(int button) {
+ int i;
+ for(i = 0; keybindNames[i]; i++)
+ if(player_input[i]->type == KEYBIND_JBUTTON && player_input[i]->key == button) {
+ input_key(i, KEY_RELEASE, 0);
+ return;
+ }
}
// Keyboard.
-static void handle_keydown(SDLKey key) {
+
+// Key down.
+static void input_keydown(SDLKey key) {
+ int i;
+ for(i = 0; keybindNames[i]; i++)
+ if(player_input[i]->type == KEYBIND_KEYBOARD && player_input[i]->key == key) {
+ input_key(i, KEY_PRESS, 0);
+ return;
+ }
+
+ // Fire Escape.
SDL_Event quit;
- switch(key) {
- case SDLK_ESCAPE:
- quit.type = SDL_QUIT;
- SDL_PushEvent(&quit);
- break;
- case SDLK_LEFT:
- case SDLK_a:
- player_turn -= (double)(1<<15);
- break;
- case SDLK_RIGHT:
- case SDLK_d:
- player_turn += (double)(1<<15);
- break;
- case SDLK_UP:
- case SDLK_w:
- player_acc += (double)(1<<15);
- break;
- default:
- break;
+ if(key == SDLK_ESCAPE) {
+ quit.type = SDL_QUIT;
+ SDL_PushEvent(&quit);
}
}
-static void handle_keyup(SDLKey key) {
- switch(key) {
- case SDLK_LEFT:
- case SDLK_a:
- player_turn += (double)(1<<15);
- break;
- case SDLK_RIGHT:
- case SDLK_d:
- player_turn -= (double)(1<<15);
- break;
- case SDLK_UP:
- case SDLK_w:
- player_acc -= (double)(1<<15);
- //break;
- default:
- break;
- }
+// Key up.
+static void input_keyup(SDLKey key) {
+ int i;
+ for(i = 0; keybindNames[i]; i++)
+ if(player_input[i]->type == KEYBIND_KEYBOARD && player_input[i]->key == key) {
+ input_key(i, KEY_RELEASE, 0);
+ return;
+ }
}
// Global input.
-void handle_input(SDL_Event* event) {
+
+// Just seperates the event types.
+void input_handle(SDL_Event* event) {
switch(event->type) {
case SDL_JOYAXISMOTION:
- handle_joyaxis(event->jaxis.axis, event->jaxis.value);
+ input_joyaxis(event->jaxis.axis, event->jaxis.value);
break;
case SDL_JOYBUTTONDOWN:
- handle_joydown(event->jbutton.button);
+ input_joydown(event->jbutton.button);
break;
case SDL_JOYBUTTONUP:
- handle_joyup(event->jbutton.button);
+ input_joyup(event->jbutton.button);
case SDL_KEYDOWN:
- handle_keydown(event->key.keysym.sym);
+ input_keydown(event->key.keysym.sym);
break;
case SDL_KEYUP:
- handle_keyup(event->key.keysym.sym);
+ input_keyup(event->key.keysym.sym);
break;
}
}
diff --git a/src/player.h b/src/player.h
index 4ed69d7..8db8010 100644
--- a/src/player.h
+++ b/src/player.h
@@ -1,16 +1,15 @@
#pragma once
#include <SDL.h>
-// Flags.
-#define PLAYER_FLAG_NULL (1<<0)
-#define PLAYER_FLAG_MOV_LEFT (1<<1)
-#define PLAYER_FLAG_MOV_RIGHT (1<<2)
-#define PLAYER_FLAG_MOV_ACC (1<<3)
+typedef enum { KEYBIND_NULL, KEYBIND_KEYBOARD, KEYBIND_JAXIS, KEYBIND_JBUTTON } KeybindType;
int player_isFlag(unsigned int flag);
void player_setFlag(unsigned int flag);
void player_rmFlag(unsigned int flag);
// Input.
-void handle_input(SDL_Event* event);
+void input_init(void);
+void input_exit(void);
+void input_set_Keybind(char* keybind, KeybindType type, int key, int reverse);
+void input_handle(SDL_Event* event);
diff --git a/src/space.c b/src/space.c
index 3258767..0a372b5 100644
--- a/src/space.c
+++ b/src/space.c
@@ -1,5 +1,3 @@
-#include <SDL.h>
-#include <SDL_opengl.h>
#include "log.h"
#include "physics.h"
#include "opengl.h"
@@ -21,9 +19,9 @@ void space_init(void) {
nstars = (500*gl_screen.w*gl_screen.h + STAR_BUF*STAR_BUF)/(800*640);;
stars = malloc(sizeof(Star)*nstars);
for(i = 0; i < nstars; i++) {
- stars[i].brightness = (float)RNG(50, 200)/256.;
- stars[i].pos.x = (float)RNG(-STAR_BUF, gl_screen.w + STAR_BUF);
- stars[i].pos.y = (float)RNG(-STAR_BUF, gl_screen.h + STAR_BUF);
+ stars[i].brightness = (double)RNG(50, 200)/256.;
+ stars[i].pos.x = (double)RNG(-STAR_BUF, gl_screen.w + STAR_BUF);
+ stars[i].pos.y = (double)RNG(-STAR_BUF, gl_screen.h + STAR_BUF);
}
}