- added cybersun screen

[dosdemo] / src / scr / cybersun.c

diff --git a/src/scr/cybersun.c b/src/scr/cybersun.c
new file mode 100644 (file)
index 0000000..bb6055a
--- /dev/null
+++ b/src/scr/cybersun.c
@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include "demo.h"
+#include "3dgfx.h"
+#include "screen.h"
+#include "gfxutil.h"
+#include "mesh.h"
+#include "image.h"
+
+static int init(void);
+static void destroy(void);
+static void start(long trans_time);
+static void draw(void);
+
+static struct screen scr = {
+       "cybersun",
+       init,
+       destroy,
+       start,
+       0,
+       draw
+};
+
+static float cam_theta = 0, cam_phi = 10;
+static float cam_dist = 6;
+
+static struct g3d_mesh gmesh;
+#define GMESH_GRIDSZ   20
+#define GMESH_SIZE             50
+static struct image gtex;
+
+struct screen *cybersun_screen(void)
+{
+       return &scr;
+}
+
+static int init(void)
+{
+       int i, j;
+
+       if(gen_plane_mesh(&gmesh, GMESH_SIZE, GMESH_SIZE, GMESH_GRIDSZ, GMESH_GRIDSZ) == -1) {
+               return -1;
+       }
+       for(i=0; i<gmesh.vcount; i++) {
+               gmesh.varr[i].u *= GMESH_GRIDSZ;
+               gmesh.varr[i].v *= GMESH_GRIDSZ;
+       }
+       if(load_image(&gtex, "data/pgrid.png") == -1) {
+               return -1;
+       }
+
+       return 0;
+}
+
+static void destroy(void)
+{
+       destroy_mesh(&gmesh);
+       destroy_image(&gtex);
+}
+
+static void start(long trans_time)
+{
+       g3d_matrix_mode(G3D_PROJECTION);
+       g3d_load_identity();
+       g3d_perspective(50.0, 1.3333333, 0.5, 500.0);
+
+       g3d_enable(G3D_CULL_FACE);
+
+       g3d_clear_color(0, 0, 0);
+}
+
+static void draw(void)
+{
+       int i;
+
+       mouse_orbit_update(&cam_theta, &cam_phi, &cam_dist);
+
+       g3d_matrix_mode(G3D_MODELVIEW);
+       g3d_load_identity();
+       g3d_translate(0, 0, -cam_dist);
+       g3d_rotate(cam_phi, 1, 0, 0);
+       g3d_rotate(cam_theta, 0, 1, 0);
+       if(opt.sball) {
+               g3d_mult_matrix(sball_matrix);
+       }
+
+       g3d_clear(G3D_COLOR_BUFFER_BIT | G3D_DEPTH_BUFFER_BIT);
+
+       g3d_set_texture(gtex.width, gtex.height, gtex.pixels);
+       g3d_enable(G3D_TEXTURE_2D);
+
+       g3d_push_matrix();
+       g3d_rotate(-90, 1, 0, 0);
+       draw_mesh(&gmesh);
+       g3d_pop_matrix();
+
+       g3d_disable(G3D_TEXTURE_2D);
+
+       swap_buffers(fb_pixels);
+}