panning

[gba_blender] / src / main.c

diff --git a/src/main.c b/src/main.c
index 9f42c02..b5648d0 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -38,7 +38,7 @@ enum {
        SIDX_ICON_X,
        SIDX_ICON_Y,
        SIDX_ICON_Z,
-       SIDX_DIRTY,
+       SIDX_DIRTY
 };
 
 #define SIDX_ICONS_BASE                SIDX_ICON_ZOOM
@@ -54,7 +54,9 @@ enum {
        SNAM_ICON_X             = SNAM_START + 32 * 8 + 26,
        SNAM_ICON_Y             = SNAM_ICON_X + 2,
        SNAM_ICON_Z             = SNAM_ICON_Y + 2,
-       SNAM_DIRTY              = SNAM_ICON_ORBIT + 4
+       SNAM_DIRTY              = SNAM_ICON_ORBIT + 4,
+       SNAM_TIME0              = SNAM_START + 32 * 8,
+       SNAM_TIME1              = SNAM_TIME0 + 32 * 2
 };
 
 #define MENU_HEIGHT            17
@@ -69,9 +71,14 @@ extern struct { unsigned char r, g, b; } bgimg_cmap[];
 extern unsigned char bgimg_pixels[];
 
 static int32_t cam_theta = 0x10000, cam_phi = -0x8000;
+static int32_t cam_pan_x, cam_pan_y;
 
 static int show_obj = 1, show_del;
 static int32_t rot_matrix[16];
+static int pan_mode;
+
+static int snam_time[26];
+static int spos_time[104];
 
 #define AXIS0  0x10000
 #define AXIS1  0x80000
@@ -113,7 +120,7 @@ static uint16_t oam[4 * MAX_SIDX];
 int main(void)
 {
        int i;
-       int x, y;
+       int x, y, anm;
        unsigned int nframes = 0, backbuf;
        uint16_t *cptr;
        unsigned char r, g, b;
@@ -149,6 +156,15 @@ int main(void)
        REG_BLDCNT = BLDCNT_ALPHA | BLDCNT_B_BG2;
        REG_BLDALPHA = 0x040c;
 
+       for(i=0; i<13; i++) {
+               snam_time[i] = SNAM_TIME0 + (i << 1);
+               snam_time[i + 13] = SNAM_TIME1 + (i << 1);
+       }
+       for(i=0; i<104; i++) {
+               int t = (i << 16) / 103;
+               spos_time[i] = (t * 223) >> 16;
+       }
+
        set_sprite(oam, SIDX_ICONS_BASE, SNAM_ICON_ZOOM, 213, 57, 4, SPR_SZ32 | SPR_BLEND);
        set_sprite(oam, SIDX_ICONS_BASE + 1, SNAM_ICON_PAN, 213, 81, 4, SPR_SZ32 | SPR_BLEND);
        set_sprite(oam, SIDX_ICONS_BASE + 2, SNAM_ICON_ORBIT, 213, 103, 4, SPR_SZ32 | SPR_BLEND);
@@ -159,7 +175,7 @@ int main(void)
 
        upd_rotation();
 
-       key_repeat(75, 75, KEY_LEFT | KEY_RIGHT | KEY_DOWN | KEY_UP);
+       key_repeat(75, 75, KEY_LEFT | KEY_RIGHT | KEY_DOWN | KEY_UP | KEY_LT | KEY_RT);
 
        /* every vblank, copy the shadow OAM automatically */
        /*dma_copy16(3, (void*)OAM_ADDR, oam, sizeof oam / 2, DMACNT_VBLANK |
@@ -176,7 +192,7 @@ int main(void)
 
                xgl_viewport(0, 0, 240, VP_HEIGHT);
                xgl_load_identity();
-               xgl_translate(0, 0, 8 << 16);
+               xgl_translate(-cam_pan_x, -cam_pan_y, 8 << 16);
                xgl_mult_matrix(rot_matrix);
 
                if(show_obj) {
@@ -211,6 +227,7 @@ int main(void)
 
                /* small axes */
                xgl_viewport(176, 2, 64, 32);
+               xgl_xyzzy();
                xgl_draw(XGL_LINES, small_axes, 6);
 
                xgl_transform(small_axes + 5, &x, &y);
@@ -220,6 +237,9 @@ int main(void)
                xgl_transform(small_axes + 3, &x, &y);
                set_sprite(oam, SIDX_ICONS_BASE + 5, SNAM_ICON_Y, x - 8, y + 8, 2, SPR_SZ16);
 
+               anm = (timer_msec >> 5) % 104;
+               set_sprite(oam, SIDX_TIME, snam_time[anm >> 2], spos_time[anm], 144, 5, SPR_SZ16);
+
                wait_vblank();
                present(backbuf);
                dma_copy16(3, (void*)OAM_ADDR, oam, sizeof oam / 2, 0);
@@ -228,35 +248,69 @@ int main(void)
        return 0;
 }
 
+#define PAN_SPEED      0x4000
+
 static void handle_keys(void)
 {
        update_keyb();
 
        if(KEYPRESS(KEY_UP)) {
-               cam_phi += 0x2000;
-               if(cam_phi > X_HPI) cam_phi = X_HPI;
-               upd_rotation();
+               if(pan_mode) {
+                       cam_pan_y += PAN_SPEED;
+                       if(cam_pan_y > 0x1c000) cam_pan_y = 0x1c000;
+               } else {
+                       cam_phi += 0x2000;
+                       if(cam_phi > X_HPI) cam_phi = X_HPI;
+                       upd_rotation();
+               }
        }
        if(KEYPRESS(KEY_DOWN)) {
-               cam_phi -= 0x2000;
-               if(cam_phi < -X_HPI) cam_phi = -X_HPI;
-               upd_rotation();
+               if(pan_mode) {
+                       cam_pan_y -= PAN_SPEED;
+                       if(cam_pan_y < -0x1c000) cam_pan_y = -0x1c000;
+               } else {
+                       cam_phi -= 0x2000;
+                       if(cam_phi < -X_HPI) cam_phi = -X_HPI;
+                       upd_rotation();
+               }
        }
        if(KEYPRESS(KEY_LEFT)) {
-               cam_theta += 0x2000;
-               if(cam_theta > X_2PI) cam_theta -= X_2PI;
-               upd_rotation();
+               if(pan_mode) {
+                       cam_pan_x -= PAN_SPEED;
+                       if(cam_pan_x < -0x50000) cam_pan_x = -0x50000;
+               } else {
+                       cam_theta += 0x2000;
+                       if(cam_theta > X_2PI) cam_theta -= X_2PI;
+                       upd_rotation();
+               }
        }
        if(KEYPRESS(KEY_RIGHT)) {
-               cam_theta -= 0x2000;
-               if(cam_theta < 0) cam_theta += X_2PI;
-               upd_rotation();
+               if(pan_mode) {
+                       cam_pan_x += PAN_SPEED;
+                       if(cam_pan_x > 0x50000) cam_pan_x = 0x50000;
+               } else {
+                       cam_theta -= 0x2000;
+                       if(cam_theta < 0) cam_theta += X_2PI;
+                       upd_rotation();
+               }
+       }
+
+       if(KEYPRESS(KEY_START)) {
+               pan_mode ^= 1;
        }
+       if(KEYPRESS(KEY_SELECT)) {
+               if(show_obj) {
+                       show_obj = ((show_obj - 1) ^ 1) + 1;
+               } else {
+                       show_obj = 1;
+               }
+       }
+
        if(KEYPRESS(KEY_RT)) {
-               if(++show_obj > 2) show_obj = 0;
+               cam_pan_x += PAN_SPEED;
        }
        if(KEYPRESS(KEY_LT)) {
-               if(--show_obj < 0) show_obj = 2;
+               cam_pan_x -= PAN_SPEED;
        }
 
        if(KEYPRESS(KEY_A)) {