X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fmain.c;h=a519dc0f2af0361c7934ed3dd30b30ce3ad6c995;hb=c702b53199b0daae33e67b0d398b460995cd374e;hp=d5dc09686bb19893cb85def5bd0df0aecb28913a;hpb=9123da2ff9583baa8a221deceb23436fcbfea7d9;p=gba_blender

diff --git a/src/main.c b/src/main.c
index d5dc096..a519dc0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -38,6 +38,31 @@ extern unsigned char bgimg_pixels[];
 
 static int32_t cam_theta = 0x10000, cam_phi = -0x8000;
 
+static int show_obj = 1, show_del;
+
+#define AXIS0	0x10000
+#define AXIS1	0x80000
+
+static struct xvertex gridaxes[] = {
+	{AXIS0, 0, 0,	0, 0, 0, 92},
+	{AXIS1, 0, 0,	0, 0, 0, 92},
+	{-AXIS0, 0, 0,	0, 0, 0, 92},
+	{-AXIS1, 0, 0,	0, 0, 0, 92},
+	{0, 0, AXIS0,	0, 0, 0, 93},
+	{0, 0, AXIS1,	0, 0, 0, 93},
+	{0, 0, -AXIS0,	0, 0, 0, 93},
+	{0, 0, -AXIS1,	0, 0, 0, 93},
+
+	{0, 0, 0,		0, 0, 0, 92},
+	{AXIS1, 0, 0,	0, 0, 0, 92},
+	{0, 0, 0,		0, 0, 0, 92},
+	{-AXIS1, 0, 0,	0, 0, 0, 92},
+	{0, 0, 0,		0, 0, 0, 93},
+	{0, 0, AXIS1,	0, 0, 0, 93},
+	{0, 0, -0,		0, 0, 0, 93},
+	{0, 0, -AXIS1,	0, 0, 0, 93},
+};
+
 int main(void)
 {
 	int i;
@@ -91,8 +116,38 @@ int main(void)
 		xgl_translate(0, 0, 8 << 16);
 		xgl_rotate_x(cam_phi);
 		xgl_rotate_y(cam_theta);
-//		xgl_draw(XGL_QUADS, cube, sizeof cube / sizeof *cube);
-		xgl_draw(XGL_TRIANGLES, suzanne, sizeof suzanne / sizeof *suzanne);
+
+		if(show_obj) {
+			if(cam_theta < X_PI) {
+				xgl_draw(XGL_LINES, gridaxes + 2, 2);	/* -X */
+			} else {
+				xgl_draw(XGL_LINES, gridaxes, 2);		/* +X */
+			}
+			if(cam_theta < X_HPI || cam_theta > (3 * X_HPI)) {
+				xgl_draw(XGL_LINES, gridaxes + 4, 2);	/* +Z */
+			} else {
+				xgl_draw(XGL_LINES, gridaxes + 6, 2);	/* -Z */
+			}
+
+			if(show_obj == 1) {
+				xgl_draw(XGL_QUADS, cube, sizeof cube / sizeof *cube);
+			} else {
+				xgl_draw(XGL_TRIANGLES, suzanne, sizeof suzanne / sizeof *suzanne);
+			}
+
+			if(cam_theta < X_PI) {
+				xgl_draw(XGL_LINES, gridaxes, 2);		/* +X */
+			} else {
+				xgl_draw(XGL_LINES, gridaxes + 2, 2);	/* -X */
+			}
+			if(cam_theta < X_HPI || cam_theta > (3 * X_HPI)) {
+				xgl_draw(XGL_LINES, gridaxes + 6, 2);	/* -Z */
+			} else {
+				xgl_draw(XGL_LINES, gridaxes + 4, 2);	/* +Z */
+			}
+		} else {
+			xgl_draw(XGL_LINES, gridaxes + 8, 8);
+		}
 
 		wait_vblank();
 		present(backbuf);
@@ -115,8 +170,26 @@ static void handle_keys(void)
 	}
 	if(KEYPRESS(KEY_LEFT)) {
 		cam_theta += 0x2000;
+		if(cam_theta > X_2PI) cam_theta -= X_2PI;
 	}
 	if(KEYPRESS(KEY_RIGHT)) {
 		cam_theta -= 0x2000;
+		if(cam_theta < 0) cam_theta += X_2PI;
+	}
+	if(KEYPRESS(KEY_RT)) {
+		if(++show_obj > 2) show_obj = 0;
+	}
+	if(KEYPRESS(KEY_LT)) {
+		if(--show_obj < 0) show_obj = 2;
+	}
+
+	if(KEYPRESS(KEY_A)) {
+		show_del ^= 1;
+	}
+	if(KEYPRESS(KEY_B)) {
+		if(show_del) {
+			show_obj = 0;
+			show_del = 0;
+		}
 	}
 }