158 lines
3.7 KiB
C
158 lines
3.7 KiB
C
/** @file frontend_sdl.c
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X11 frontend for Licar.
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*/
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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#include <X11/Xutil.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <sys/time.h>
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#include <unistd.h> // for usleep
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#define LCR_SETTING_LOG_LEVEL 2
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#define LCR_SETTING_RESOLUTION_X 320
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#define LCR_SETTING_RESOLUTION_Y 240
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#define LCR_SETTING_MUSIC 0
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#ifndef PRESET_QUALITY
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#define PRESET_QUALITY 3
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#endif
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#include "frontend_helper.h"
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#include "game.h"
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char framebuffer[LCR_SETTING_RESOLUTION_X * LCR_SETTING_RESOLUTION_Y * 4];
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uint8_t buttonStates[8];
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void LCR_drawPixel(unsigned long index, uint16_t color)
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{
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char *p = framebuffer + 4 * index;
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*p = (color << 3) & 0xff;
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p++;
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*p = (color >> 3) & 0xfc;
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p++;
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*p = (color >> 8) & 0xf8;
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}
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uint8_t LCR_keyPressed(uint8_t key)
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{
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return buttonStates[key % 8];
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}
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void LCR_sleep(uint16_t timeMs)
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{
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usleep(timeMs * 1000);
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}
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void printHelp(void)
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{
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printf(
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"Licar, 3D racing game, v. " LCR_VERSION ", X11 frontend, args:\n"
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" -h print help and quit\n"
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LCR_ARG_HELP_STR);
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}
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int main(int argc, char **argv)
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{
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int running = 1;
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struct timeval now;
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for (int i = 0; i < argc; ++i)
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if (argv[i][0] == '-')
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switch (argv[i][1])
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{
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case 'h': printHelp(); return 0; break;
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default: break;
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}
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puts("initializing game");
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LCR_gameInit(argc,(const char **) argv);
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Display *display = XOpenDisplay(0);
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int screen = DefaultScreen(display);
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openDataFile();
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Window window = XCreateSimpleWindow(display,RootWindow(display,screen),10,10,
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LCR_SETTING_RESOLUTION_X,LCR_SETTING_RESOLUTION_Y,1,
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BlackPixel(display,screen),WhitePixel(display,screen));
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XSizeHints *sizeHints = XAllocSizeHints();
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sizeHints->flags = PMaxSize | PMinSize;
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sizeHints->max_width = LCR_SETTING_RESOLUTION_X;
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sizeHints->min_width = LCR_SETTING_RESOLUTION_X;
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sizeHints->max_height = LCR_SETTING_RESOLUTION_Y;
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sizeHints->min_height = LCR_SETTING_RESOLUTION_Y;
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XSetWMNormalHints(display,window,sizeHints);
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XFree(sizeHints);
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XMapWindow(display,window);
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XSelectInput(display,window,KeyPressMask | KeyReleaseMask);
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GC context = DefaultGC(display,screen);
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XStoreName(display,window,"Licar");
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/*
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Hardcoded constants here may perhaps cause trouble on some platforms, but
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doing X11 "the right way" would mean 1 billion lines of code, so fuck it.
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*/
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XImage *image = XCreateImage(display,DefaultVisual(display,screen),
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/*DefaultDepth(display,screen)*/24,ZPixmap,0,framebuffer,
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LCR_SETTING_RESOLUTION_X,LCR_SETTING_RESOLUTION_Y,8,0);
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puts("starting");
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while (running) // main loop
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{
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XEvent event;
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gettimeofday(&now,NULL);
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running &= LCR_gameStep(now.tv_sec * 1000 + now.tv_usec / 1000);
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XPutImage(display,window,context,image,0,0,0,0,LCR_SETTING_RESOLUTION_X,
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LCR_SETTING_RESOLUTION_Y);
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while (XCheckWindowEvent(display,window,KeyPressMask |
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KeyReleaseMask,&event) != False)
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{
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uint8_t state = event.xkey.type == KeyPress;
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switch (XKeycodeToKeysym(display,event.xkey.keycode,0))
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{
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case XK_Up: case XK_w:
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buttonStates[LCR_KEY_UP % 8] = state; break;
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case XK_Left: case XK_a:
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buttonStates[LCR_KEY_LEFT % 8] = state; break;
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case XK_Right: case XK_d:
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buttonStates[LCR_KEY_RIGHT % 8] = state; break;
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case XK_Down: case XK_s:
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buttonStates[LCR_KEY_DOWN % 8] = state; break;
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case XK_j: case XK_Return:
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buttonStates[LCR_KEY_A % 8] = state; break;
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case XK_k: case XK_Escape:
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buttonStates[LCR_KEY_B % 8] = state; break;
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default: break;
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}
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}
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}
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puts("ending");
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XDestroyImage(image);
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XCloseDisplay(display);
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closeDataFile();
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LCR_gameEnd();
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return 0;
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}
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