X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=eradicate;a=blobdiff_plain;f=src%2Fsdl%2Fmain.c;fp=src%2Fsdl%2Fmain.c;h=9b109c8af02ad2173d28309266ffa490568ef396;hp=0000000000000000000000000000000000000000;hb=a77883f4cefd1af3d71588871ef27e81a49194d8;hpb=1ee7845621c04020321fa8dfb6dcbf3d8c6c9b51

diff --git a/src/sdl/main.c b/src/sdl/main.c
new file mode 100644
index 0000000..9b109c8
--- /dev/null
+++ b/src/sdl/main.c
@@ -0,0 +1,227 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <limits.h>
+#include <SDL/SDL.h>
+#include "game.h"
+#include "timer.h"
+
+#define FB_WIDTH	640
+#define FB_HEIGHT	480
+
+static void handle_event(SDL_Event *ev);
+static void toggle_fullscreen(void);
+
+static int sdlkey_to_gamekey(int sdlkey, unsigned int mod);
+
+
+static int quit;
+static SDL_Surface *fbsurf;
+
+static int fbscale = 2;
+static int xsz, ysz;
+static unsigned int sdl_flags = SDL_SWSURFACE;
+
+
+int main(int argc, char **argv)
+{
+	int s;
+	char *env;
+
+	if((env = getenv("FBSCALE")) && (s = atoi(env))) {
+		fbscale = s;
+		printf("Framebuffer scaling x%d\n", fbscale);
+	}
+
+	xsz = FB_WIDTH * fbscale;
+	ysz = FB_HEIGHT * fbscale;
+
+	/* allocate 1 extra row as a guard band, until we fucking fix the rasterizer */
+	if(!(fb_pixels = malloc(FB_WIDTH * (FB_HEIGHT + 1) * FB_BPP / CHAR_BIT))) {
+		fprintf(stderr, "failed to allocate virtual framebuffer\n");
+		return 1;
+	}
+
+	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_NOPARACHUTE);
+	if(!(fbsurf = SDL_SetVideoMode(xsz, ysz, FB_BPP, sdl_flags))) {
+		fprintf(stderr, "failed to set video mode %dx%d %dbpp\n", FB_WIDTH, FB_HEIGHT, FB_BPP);
+		free(fb_pixels);
+		SDL_Quit();
+		return 1;
+	}
+	SDL_WM_SetCaption("eradicate/SDL", 0);
+	SDL_ShowCursor(0);
+
+	time_msec = 0;
+	if(init(argc, argv) == -1) {
+		free(fb_pixels);
+		SDL_Quit();
+		return 1;
+	}
+
+	reset_timer();
+
+	while(!quit) {
+		SDL_Event ev;
+		while(SDL_PollEvent(&ev)) {
+			handle_event(&ev);
+			if(quit) goto break_evloop;
+		}
+
+		time_msec = get_msec();
+		draw();
+	}
+
+break_evloop:
+	cleanup();
+	SDL_Quit();
+	return 0;
+}
+
+void game_quit(void)
+{
+	quit = 1;
+}
+
+void wait_vsync(void)
+{
+	unsigned long start = SDL_GetTicks();
+	unsigned long until = (start | 0xf) + 1;
+	while(SDL_GetTicks() <= until);
+}
+
+void blit_frame(void *pixels, int vsync)
+{
+	int i, j;
+	unsigned short *sptr, *dptr;
+
+	if(vsync) {
+		wait_vsync();
+	}
+
+	if(SDL_MUSTLOCK(fbsurf)) {
+		SDL_LockSurface(fbsurf);
+	}
+
+	sptr = fb_pixels;
+	dptr = (unsigned short*)fbsurf->pixels + (fbsurf->w - xsz) / 2;
+	for(i=0; i<FB_HEIGHT; i++) {
+		for(j=0; j<FB_WIDTH; j++) {
+			int x, y;
+			unsigned short pixel = *sptr++;
+
+			for(y=0; y<fbscale; y++) {
+				for(x=0; x<fbscale; x++) {
+					dptr[y * fbsurf->w + x] = pixel;
+				}
+			}
+			dptr += fbscale;
+		}
+		dptr += (fbsurf->w - FB_WIDTH) * fbscale;
+	}
+
+	if(SDL_MUSTLOCK(fbsurf)) {
+		SDL_UnlockSurface(fbsurf);
+	}
+	SDL_Flip(fbsurf);
+}
+
+/*
+static int bnmask(int sdlbn)
+{
+	switch(sdlbn) {
+	case SDL_BUTTON_LEFT:
+		return MOUSE_BN_LEFT;
+	case SDL_BUTTON_RIGHT:
+		return MOUSE_BN_RIGHT;
+	case SDL_BUTTON_MIDDLE:
+		return MOUSE_BN_MIDDLE;
+	default:
+		break;
+	}
+	return 0;
+}
+*/
+
+static void handle_event(SDL_Event *ev)
+{
+	int key;
+
+	switch(ev->type) {
+	case SDL_QUIT:
+		quit = 1;
+		break;
+
+	case SDL_KEYDOWN:
+	case SDL_KEYUP:
+		if(ev->key.keysym.sym == SDLK_RETURN && (SDL_GetModState() & KMOD_ALT) &&
+				ev->key.state == SDL_PRESSED) {
+			toggle_fullscreen();
+			break;
+		}
+		key = sdlkey_to_gamekey(ev->key.keysym.sym, ev->key.keysym.mod);
+		key_event(key, ev->key.state == SDL_PRESSED ? 1 : 0);
+		break;
+
+		/*
+	case SDL_MOUSEMOTION:
+		mouse_x = ev->motion.x / fbscale;
+		mouse_y = ev->motion.y / fbscale;
+		break;
+
+	case SDL_MOUSEBUTTONDOWN:
+		mouse_bmask |= bnmask(ev->button.button);
+		if(0) {
+	case SDL_MOUSEBUTTONUP:
+			mouse_bmask &= ~bnmask(ev->button.button);
+		}
+		mouse_x = ev->button.x / fbscale;
+		mouse_y = ev->button.y / fbscale;
+		break;
+		*/
+
+	default:
+		break;
+	}
+}
+
+static void toggle_fullscreen(void)
+{
+	SDL_Surface *newsurf;
+	unsigned int newflags = sdl_flags ^ SDL_FULLSCREEN;
+
+	if(!(newsurf = SDL_SetVideoMode(xsz, ysz, FB_BPP, newflags))) {
+		fprintf(stderr, "failed to go %s\n", newflags & SDL_FULLSCREEN ? "fullscreen" : "windowed");
+		return;
+	}
+
+	fbsurf = newsurf;
+	sdl_flags = newflags;
+}
+
+#define SSORG	'\''
+#define SSEND	'`'
+static char symshift[] = {
+	'"', 0, 0, 0, 0, '<', '_', '>', '?',
+	')', '!', '@', '#', '$', '%', '^', '&', '*', '(',
+	0, ':', 0, '+', 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	'{', '|', '}', 0, 0, '~'
+};
+
+
+static int sdlkey_to_gamekey(int sdlkey, unsigned int mod)
+{
+	if(sdlkey < 128) {
+		if(mod & (KMOD_SHIFT)) {
+			if(sdlkey >= 'a' && sdlkey <= 'z') {
+				sdlkey = toupper(sdlkey);
+			} else if(sdlkey >= SSORG && sdlkey <= SSEND) {
+				sdlkey = symshift[sdlkey - SSORG];
+			}
+		}
+		return sdlkey;
+	}
+	if(sdlkey < 256) return 0;
+	return sdlkey - 128;
+}