X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Ftunnel.c;h=8dec9025dbd58278153963825a6ffd57dfda5619;hb=3a148d92224a9ab88a9c602b072d85d4b1b1eddd;hp=c6504ce24f99031ce1219cb5f30e400642168c10;hpb=21180fdf54f0c578af0959df088de308ce25ca61;p=fbgfx

diff --git a/src/tunnel.c b/src/tunnel.c
index c6504ce..8dec902 100644
--- a/src/tunnel.c
+++ b/src/tunnel.c
@@ -4,7 +4,8 @@
 #include <assert.h>
 #include <imago2.h>
 #include "tpool.h"
-#include "tunnel.h"
+#include "demo.h"
+#include "screen.h"
 
 #define TEX_FNAME	"data/grid.png"
 #define TEX_USCALE	4
@@ -13,15 +14,28 @@
 #define USCALE	2
 #define VSCALE	1
 
-extern unsigned long time_msec;
+static int init(void);
+static void destroy(void);
+static void start(long trans_time);
+static void stop(long trans_time);
+static void draw(void);
 
-static void (*draw_tunnel_range)(void*, int, int);
+static void (*draw_tunnel_range)(void*, int, int, long);
 
-static void draw_tunnel_range16(void *pixels, int starty, int num_lines);
-static void draw_tunnel_range32(void *pixels, int starty, int num_lines);
+static void draw_tunnel_range16(void *pixels, int starty, int num_lines, long tm);
+static void draw_tunnel_range32(void *pixels, int starty, int num_lines, long tm);
 static int count_bits(unsigned int x);
 static int count_zeros(unsigned int x);
 
+static struct screen scr = {
+	"tunnel",
+	init,
+	destroy,
+	start,
+	stop,
+	draw
+};
+
 static int xsz, ysz, vxsz, vysz;
 static unsigned int *tunnel_map;
 static unsigned char *tunnel_fog;
@@ -33,15 +47,24 @@ static unsigned int tex_xmask, tex_ymask;
 
 static struct thread_pool *tpool;
 
+static long trans_start, trans_dur;
+static int trans_dir;
+
+
+struct screen *tunnel_screen(void)
+{
+	return &scr;
+}
+
 
-int init_tunnel(int x, int y, int bpp)
+static int init(void)
 {
 	int i, j, n;
 	unsigned int *tmap;
 	unsigned char *fog;
-	float aspect = (float)x / (float)y;
+	float aspect = (float)fb_width / (float)fb_height;
 
-	switch(bpp) {
+	switch(fb_depth) {
 	case 16:
 		draw_tunnel_range = draw_tunnel_range16;
 		break;
@@ -49,12 +72,12 @@ int init_tunnel(int x, int y, int bpp)
 		draw_tunnel_range = draw_tunnel_range32;
 		break;
 	default:
-		fprintf(stderr, "unsupported color depth: %d\n", bpp);
+		fprintf(stderr, "unsupported color depth: %d\n", fb_depth);
 		return -1;
 	}
 
-	xsz = x;
-	ysz = y;
+	xsz = fb_width;
+	ysz = fb_height;
 	vxsz = xsz / USCALE;
 	vysz = ysz / VSCALE;
 
@@ -117,33 +140,64 @@ int init_tunnel(int x, int y, int bpp)
 	return 0;
 }
 
-void destroy_tunnel(void)
+static void destroy(void)
 {
 	tpool_destroy(tpool);
 	free(tunnel_map);
 	free(tunnel_fog);
 }
 
+static void start(long trans_time)
+{
+	trans_start = time_msec;
+	trans_dur = trans_time;
+	trans_dir = 1;
+}
+
+static void stop(long trans_time)
+{
+	trans_start = time_msec;
+	trans_dur = trans_time;
+	trans_dir = -1;
+}
+
 #define NUM_WORK_ITEMS	32
 
 static struct work {
 	void *pixels;
 	int starty, num_lines;
+	long tm;
 } work[NUM_WORK_ITEMS];
 
 static void work_func(void *cls)
 {
 	struct work *w = (struct work*)cls;
-	draw_tunnel_range(w->pixels, w->starty, w->num_lines);
+	draw_tunnel_range(w->pixels, w->starty, w->num_lines, w->tm);
 }
 
-void draw_tunnel(void *pixels)
+static void draw(void)
 {
 	int i, num_lines = vysz / NUM_WORK_ITEMS;
+	int draw_lines = num_lines;
+
+	if(trans_dir) {
+		long interval = time_msec - trans_start;
+		int progr = num_lines * interval / trans_dur;
+		if(trans_dir < 0) {
+			draw_lines = num_lines - progr - 1;
+		} else {
+			draw_lines = progr;
+		}
+		if(progr >= num_lines) {
+			trans_dir = 0;
+		}
+	}
+
 	for(i=0; i<NUM_WORK_ITEMS; i++) {
-		work[i].pixels = pixels;
+		work[i].pixels = fb_pixels;
 		work[i].starty = i * num_lines;
-		work[i].num_lines = num_lines;
+		work[i].num_lines = draw_lines;
+		work[i].tm = time_msec;
 
 		tpool_enqueue(tpool, work + i, work_func, 0);
 	}
@@ -177,13 +231,13 @@ static void tunnel_color(int *rp, int *gp, int *bp, long toffs, unsigned int tpa
 #define PACK_RGB32(r, g, b) \
 	((((r) & 0xff) << 16) | (((g) & 0xff) << 8) | ((b) & 0xff))
 
-static void draw_tunnel_range16(void *pix, int starty, int num_lines)
+static void draw_tunnel_range16(void *pix, int starty, int num_lines, long tm)
 {
 	int i, j;
 	unsigned int *tmap = tunnel_map + starty * vxsz;
 	unsigned char *fog = tunnel_fog + starty * vxsz;
 
-	long toffs = time_msec / 4;
+	long toffs = tm / 4;
 	unsigned int *pixels = (unsigned int*)pix + starty * (xsz >> 1);
 
 	for(i=0; i<num_lines; i++) {
@@ -198,13 +252,13 @@ static void draw_tunnel_range16(void *pix, int starty, int num_lines)
 	}
 }
 
-static void draw_tunnel_range32(void *pix, int starty, int num_lines)
+static void draw_tunnel_range32(void *pix, int starty, int num_lines, long tm)
 {
 	int i, j;
 	unsigned int *tmap = tunnel_map + starty * vxsz;
 	unsigned char *fog = tunnel_fog + starty * vxsz;
 
-	long toffs = time_msec / 4;
+	long toffs = tm / 4;
 	unsigned int *pixels = (unsigned int*)pix + starty * xsz * VSCALE;
 
 	for(i=0; i<num_lines; i++) {