#if 0
gcc ${CFLAGS:--s -O2} -c -Wno-multichar bindings.c `sdl-config --cflags`
exit
#endif
/*
This program is part of Free Hero Mesh and is public domain.
*/
#define HEROMESH_BINDINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"
#include "sqlite3.h"
#include "smallxrm.h"
#include "quarks.h"
#include "heromesh.h"
#define MOD_SHIFT 1
#define MOD_CTRL 2
#define MOD_ALT 4
#define MOD_META 8
#define MOD_NUMLOCK 14
typedef struct {
UserCommand m[16];
} KeyBinding;
static KeyBinding*editor_bindings[SDLK_LAST];
static KeyBinding*game_bindings[SDLK_LAST];
static KeyBinding*editor_mouse_bindings[4];
static KeyBinding*game_mouse_bindings[4];
static int cur_modifiers,loose_modifiers;
static void set_binding(KeyBinding**pkb,int mod,const char*txt) {
int i;
KeyBinding*kb=*pkb;
UserCommand*uc;
if(!*txt) return;
if(!kb) kb=*pkb=calloc(1,sizeof(KeyBinding));
if(!kb) fatal("Allocation failed\n");
uc=kb->m+mod;
if(uc->cmd) return;
switch(*txt) {
case '^': // Miscellaneous
uc->cmd='^';
uc->n=txt[1];
break;
case '=': case '-': case '+': // Restart, rewind, advance
uc->cmd=*txt;
uc->n=strtol(txt+1,0,0);
break;
case '\'': // Input move
uc->cmd='\'';
for(i=1;i<256;i++) if(heromesh_key_names[i] && !strcmp(txt+1,heromesh_key_names[i])) {
uc->n=i;
return;
}
fatal("Error in key binding: %s\nInvalid Hero Mesh key name\n",txt);
break;
case '!': // System command
uc->cmd='!';
uc->txt=txt+1;
break;
case 'A' ... 'Z': case 'a' ... 'z': // Execute SQL statement
uc->cmd='s';
if(i=sqlite3_prepare_v3(userdb,txt,-1,SQLITE_PREPARE_PERSISTENT,&uc->stmt,0)) fatal("Error in key binding: %s\n%s\n",txt,sqlite3_errmsg(userdb));
break;
default:
fatal("Error in key binding: %s\nUnrecognized character\n",txt);
}
}
#define BINDING_MODIFIER(a,b) \
if(q==a && !(cur_modifiers&b)) { \
cur_modifiers|=b; \
xrm_enumerate(sub,cb_2,usr); \
cur_modifiers&=~b; \
if(loose) --loose_modifiers; \
return 0; \
}
static void*cb_2(xrm_db*db,void*usr,int loose,xrm_quark q) {
KeyBinding**kb=usr;
const char*txt;
xrm_db*sub=xrm_sub(db,loose,q);
if(loose) ++loose_modifiers;
BINDING_MODIFIER(Q_shift,MOD_SHIFT);
BINDING_MODIFIER(Q_ctrl,MOD_CTRL);
BINDING_MODIFIER(Q_alt,MOD_ALT);
BINDING_MODIFIER(Q_meta,MOD_META);
BINDING_MODIFIER(Q_numLock,MOD_NUMLOCK);
if(txt=xrm_get(sub)) {
if(usr==editor_mouse_bindings || usr==game_mouse_bindings) {
switch(q) {
case Q_left: kb+=SDL_BUTTON_LEFT; break;
case Q_middle: kb+=SDL_BUTTON_MIDDLE; break;
case Q_right: kb+=SDL_BUTTON_RIGHT; break;
default: goto stop;
}
} else {
if(q>=FirstKeyQuark && q<=LastKeyQuark) kb+=quark_to_key[q-FirstKeyQuark]; else goto stop;
}
set_binding(kb,cur_modifiers,txt);
if(loose_modifiers) {
int i;
for(i=0;i<16;i++) if((i&cur_modifiers)==cur_modifiers && !kb[0]->m[i].cmd) kb[0]->m[i]=kb[0]->m[cur_modifiers];
}
}
stop:
if(loose) --loose_modifiers;
return 0;
}
static void*cb_1(xrm_db*db,void*usr) {
xrm_enumerate(db,cb_2,usr);
return 0;
}
void load_key_bindings(void) {
fprintf(stderr,"Loading key bindings...\n");
cur_modifiers=loose_modifiers=0;
optionquery[1]=Q_editKey;
xrm_search(resourcedb,optionquery,optionquery,2,cb_1,editor_bindings);
optionquery[1]=Q_gameKey;
xrm_search(resourcedb,optionquery,optionquery,2,cb_1,game_bindings);
optionquery[1]=Q_editClick;
xrm_search(resourcedb,optionquery,optionquery,2,cb_1,editor_mouse_bindings);
optionquery[1]=Q_gameClick;
xrm_search(resourcedb,optionquery,optionquery,2,cb_1,game_mouse_bindings);
fprintf(stderr,"Done\n");
}
const UserCommand*find_key_binding(SDL_Event*ev,int editing) {
KeyBinding*kb;
static const UserCommand nul={cmd:0};
SDLMod m;
int i;
if(ev->type==SDL_KEYDOWN) {
m=ev->key.keysym.mod;
if(ev->key.keysym.sym>=SDLK_LAST) return &nul;
kb=(editing?editor_bindings:game_bindings)[ev->key.keysym.sym];
} else if(ev->type==SDL_MOUSEBUTTONDOWN) {
m=SDL_GetModState();
if(ev->button.button>3) return &nul;
kb=(editing?editor_mouse_bindings:game_mouse_bindings)[ev->button.button];
} else {
return &nul;
}
if(!kb) return &nul;
i=0;
if(m&KMOD_CTRL) i|=MOD_CTRL;
if(m&KMOD_SHIFT) i|=MOD_SHIFT;
if(m&KMOD_ALT) i|=MOD_ALT;
if(m&KMOD_META) i|=MOD_META;
if((m&KMOD_NUM) && kb->m[i|MOD_NUMLOCK].cmd) i|=MOD_NUMLOCK;
return kb->m+i;
}
int exec_key_binding(SDL_Event*ev,int editing,int x,int y,int(*cb)(int prev,int cmd,int number,int argc,sqlite3_stmt*args,void*aux),void*aux) {
const UserCommand*cmd=find_key_binding(ev,editing);
int prev=0;
int i;
switch(cmd->cmd) {
case 0:
return 0;
case '^':
return cb(0,cmd->n*'\0\1'+'^\0',0,0,0,aux);
case '=': case '-': case '+':
return cb(0,cmd->cmd*'\1\0'+'\0 ',cmd->n,0,0,aux);
case '\'':
return cb(0,'\' ',cmd->n,0,0,aux);
case '!':
system(cmd->txt);
return 0;
case 's':
sqlite3_reset(cmd->stmt);
sqlite3_clear_bindings(cmd->stmt);
break;
default:
fprintf(stderr,"Confusion in exec_key_binding()\n");
return 0;
}
}