Setup GTE quad rendering

include/chara.h

@@ -37,5 +37,8 @@ void free_chara(Chara *chara);
 
 void chara_render_frame(Chara *chara, int16_t framenum,
                         int16_t vx, int16_t vy, uint8_t flipx);
+void chara_draw_gte(Chara *chara, int16_t framenum,
+                    int16_t vx, int16_t vy,
+                    uint8_t flipx, int32_t angle);
 
 #endif

include/render.h

@@ -32,6 +32,7 @@
 #define OTZ_LAYER_LEVEL_FG_FRONT 2
 #define OTZ_LAYER_OBJECTS        3
 #define OTZ_LAYER_PLAYER         4
+#define OTZ_LAYER_UNDER_PLAYER   5
 #define OTZ_LAYER_LEVEL_FG_BACK  (OT_LENGTH - 3)
 #define OTZ_LAYER_LEVEL_BG       (OT_LENGTH - 2)
 

src/chara.c

@@ -162,3 +162,101 @@ chara_render_frame(Chara *chara, int16_t framenum, int16_t vx, int16_t vy, uint8
     }
 }
 
+void
+chara_draw_gte(Chara *chara, int16_t framenum,
+               int16_t vx, int16_t vy,
+               uint8_t flipx, int32_t angle)
+{
+    // Prepare position
+    VECTOR pos = { .vx = vx, .vy = vy, .vz = 0 };
+    SVECTOR rotation = { 0, 0, angle, 0 };
+    /* VECTOR scale = { ONE, flipx ? -ONE : ONE, ONE }; */
+
+    MATRIX world = { 0 };
+    RotMatrix(&rotation, &world);
+    TransMatrix(&world, &pos);
+    /* ScaleMatrix(&world, &scale); */
+    gte_SetRotMatrix(&world);
+    gte_SetTransMatrix(&world);
+
+    CharaFrame *frame = &chara->frames[framenum];
+
+    // Render only one tile
+    uint16_t idx = frame->tiles[0];
+    if(idx == 0) {
+        printf("Bad choice, bro\n");
+        return;
+    }
+
+    // Get upper left UV from tile index on tileset
+    uint16_t v0idx = idx >> 5; // divide by 32
+    uint16_t u0idx = idx - (v0idx << 5);
+
+    uint8_t
+        u0 = (u0idx << 3),
+        v0 = (v0idx << 3);
+
+    /* SPRT_8 *sprite = (SPRT_8 *)get_next_prim(); */
+    /* increment_prim(sizeof(SPRT_8)); */
+    /* setSprt8(sprite); */
+    /* setUV0(sprite, u0, v0); */
+
+    
+    /* TILE *sprite = (TILE *)get_next_prim(); */
+    /* increment_prim(sizeof(TILE)); */
+    /* setTile(sprite); */
+    /* setRGB0(sprite, level_fade, level_fade, level_fade); */
+    /* sprite->w = 8; */
+    /* sprite->h = 8; */
+    /* //setXY0 */
+    /* SVECTOR p = { 0, 0, 8 << 12, 0 }; */
+    /* RotTransPers(&p, (uint32_t *)&sprite->x0); */
+    /* sort_prim(sprite, OTZ_LAYER_PLAYER); */
+
+
+    POLY_G4 *poly = (POLY_G4 *)get_next_prim();
+    increment_prim(sizeof(POLY_G4));
+    setPolyG4(poly);
+
+    if(flipx) {
+        setRGB1(poly, 128, 0, 0);
+        setRGB0(poly, 0, 128, 0);
+        setRGB3(poly, 0, 0, 128);
+        setRGB2(poly, 128, 128, 0);
+    } else {
+        setRGB0(poly, 128, 0, 0);
+        setRGB1(poly, 0, 128, 0);
+        setRGB2(poly, 0, 0, 128);
+        setRGB3(poly, 128, 128, 0);
+    }
+    /* setRGB0(poly, level_fade, level_fade, level_fade); */
+
+    
+    SVECTOR vertices[] = {
+        { -4, -4, 0, 0 },
+        {  4, -4, 0, 0 },
+        { -4,  4, 0, 0 },
+        {  4,  4, 0, 0 },
+    };
+
+    int otz;
+    RotAverageNclip4(
+        &vertices[0],
+        &vertices[1],
+        &vertices[2],
+        &vertices[3],
+        (uint32_t *)&poly->x0,
+        (uint32_t *)&poly->x1,
+        (uint32_t *)&poly->x2,
+        (uint32_t *)&poly->x3,
+        &otz);
+
+    sort_prim(poly, OTZ_LAYER_PLAYER);
+
+    printf("Position: (%4d, %4d)\n", poly->x0, poly->y0);
+
+    /* DR_TPAGE *tpage = get_next_prim(); */
+    /* increment_prim(sizeof(DR_TPAGE)); */
+    /* setDrawTPage(tpage, 0, 1, getTPage(1, 1, chara->prectx, chara->precty)); */
+    /* sort_prim(tpage, OTZ_LAYER_PLAYER); */
+}

src/main.c

@@ -72,7 +72,8 @@ main(void)
     /* mdec_fmv_init(); */
 
     // Set first scene
-    scene_change(SCREEN_DISCLAIMER);
+    //scene_change(SCREEN_DISCLAIMER);
+    scene_change(SCREEN_SPRITETEST);
 
     while(1) {
         // Update systems

src/object_state.c

@@ -298,7 +298,7 @@ begin_render_routine:
                       || (state->id == OBJ_EXPLOSION)
                       || (state->id == OBJ_BUBBLE))
         ? OTZ_LAYER_OBJECTS
-        : OTZ_LAYER_PLAYER;
+        : OTZ_LAYER_UNDER_PLAYER;
 
     // NOTABLE EXCEPTION: if this is a bubble object which animation has gone
     // beyond the first digit display, it should be rendered on text layer

src/screen_sprite_test.c

@@ -16,6 +16,7 @@ typedef struct {
     VECTOR pos;
     int16_t frame;
     uint8_t play_frames;
+    uint8_t flipx;
     int32_t angle;
 } screen_sprite_test_data;
 
@@ -34,11 +35,13 @@ screen_sprite_test_load()
     
     load_chara(&data->chara, "\\SPRITES\\SONIC.CHARA;1", &tim);
 
-    data->pos = (VECTOR){ .vx = CENTERX, .vy = CENTERY, .vz = 0 };
+    data->pos = (VECTOR){ .vx = 0, .vy = 0, .vz = 0 };
     data->frame = 0;
     data->play_frames = 0;
     data->angle = 0;
+    data->flipx = 0;
     level_fade = 0x7f;
+    set_clear_color(36, 0, 180);
 }
 
 void
@@ -55,6 +58,7 @@ screen_sprite_test_update(void *d)
     screen_sprite_test_data *data = (screen_sprite_test_data *) d;
 
     const int32_t spd = 5;
+    const int32_t rotspd = 5;
 
     if(pad_pressing(PAD_UP)) {
         data->pos.vy -= spd;
@@ -76,6 +80,10 @@ screen_sprite_test_update(void *d)
         data->play_frames ^= 1;
     }
 
+    if(pad_pressed(PAD_TRIANGLE)) {
+        data->flipx ^= 1;
+    }
+
     if(pad_pressed(PAD_SELECT)) {
         scene_change(SCREEN_LEVELSELECT);
     }
@@ -88,14 +96,14 @@ screen_sprite_test_update(void *d)
         else if(pad_pressed(PAD_SQUARE)) data->frame--;
     }
 
-    if(pad_pressing(PAD_R1)) data->angle += spd;
+    if(pad_pressing(PAD_R1)) data->angle += rotspd;
-    else if(pad_pressing(PAD_L1)) data->angle -= spd;
+    else if(pad_pressing(PAD_L1)) data->angle -= rotspd;
 
     if(data->frame < 0) data->frame = data->chara.numframes - 1;
     else if(data->frame >= data->chara.numframes) data->frame = 0;
 
-    if(data->angle < 0) data->angle = ONE - spd;
+    //if(data->angle < 0) data->angle = ONE - spd;
-    else if(data->angle >= ONE) data->angle = 0;
+    //else if(data->angle >= ONE) data->angle = 0;
 }
 
 void
@@ -117,10 +125,15 @@ screen_sprite_test_draw(void *d)
     font_set_color(128, 128, 128);
     font_draw_sm(buffer, 10, 10);
     
-    chara_render_frame(&data->chara,
+    /* chara_render_frame(&data->chara, */
-                       data->frame,
+    /*                    data->frame, */
-                       (int16_t)(data->pos.vx),
+    /*                    (int16_t)(data->pos.vx), */
-                       (int16_t)(data->pos.vy),
+    /*                    (int16_t)(data->pos.vy), */
-                       0 // flipx
+    /*                    data->flipx); */
-        );
+    chara_draw_gte(&data->chara,
+                   data->frame,
+                   (int16_t)(data->pos.vx),
+                   (int16_t)(data->pos.vy),
+                   data->flipx,
+                   data->angle);
 }