void
SpriteRenderer::update()
{
for(int i = 0; i < 128; ++i)
{
// OAM[i].attr0 = OBJ_Y(80) | OBJ_SHAPE(0) | OBJ_256_COLOR;
// OAM[i].attr1 = OBJ_X(120) | OBJ_SIZE(2);
// OAM[i].attr2 = OBJ_CHAR(8) | OBJ_PALETTE(0) | OBJ_PRIORITY(0);
Sprite& sprite = sprites[i];
if (sprite.is_enabled())
{
OAM[i].attr0 = OBJ_Y((sprite.get_y() - sprite.get_data().get_y_align() - y_offset) & 0xFF) | OBJ_SHAPE(0) | OBJ_256_COLOR;
OAM[i].attr1 =
OBJ_X((sprite.get_x() - sprite.get_data().get_x_align() - x_offset) & 0xFF) |
OBJ_SIZE(2) |
(sprite.get_vflip() ? OBJ_VFLIP : 0) |
(sprite.get_hflip() ? OBJ_HFLIP : 0);
OAM[i].attr2 = OBJ_CHAR(sprite.get_data().get_char_addr(sprite.get_frame())) | OBJ_PALETTE(0) | OBJ_PRIORITY(0);
}
else
{
OAM[i].attr0 = OBJ_DISABLE; // OBJ_Y(80) | OBJ_SHAPE(0) | OBJ_256_COLOR;
OAM[i].attr1 = 0; // OBJ_X(120) | OBJ_SIZE(2);
OAM[i].attr2 = 0; // OBJ_CHAR(8) | OBJ_PALETTE(0) | OBJ_PRIORITY(0);
}
}
}
int main()
{
irqInit();
SetMode((LCDC_BITS)(MODE_1 | BG0_ON | BG2_ON | OBJ_ENABLE));
irqSet(IRQ_VBLANK, vblank);
irqEnable(IRQ_VBLANK);
float xpos = 0;
float ypos = 0;
float xdir = 0;
float ydir = 0;
int dir = 0;
BG_COLORS[0] = RGB5(31, 0, 31);
CpuFastSet(tileset_img, OBJ_BASE_ADR, COPY32 | (256 * 16) / 4);
CpuFastSet(tileset_pal, OBJ_COLORS, COPY32 | (256 / 4));
CpuFastSet(tileset_img, PATRAM4(0, 0), COPY32 | (256 * 16) / 4);
CpuFastSet(tileset_pal, BG_COLORS, COPY32 | (256 / 4));
// mock up a map
/* ((vu16*)MAP_BASE_ADR(MAP_BASE_BLOCK))[0] = 0;
((vu16*)MAP_BASE_ADR(MAP_BASE_BLOCK))[1] = 1;
((vu16*)MAP_BASE_ADR(MAP_BASE_BLOCK))[32] = 32;
((vu16*)MAP_BASE_ADR(MAP_BASE_BLOCK))[33] = 33;
((vu16*)MAP_BASE_ADR(MAP_BASE_BLOCK))[64] = 64;
((vu16*)MAP_BASE_ADR(MAP_BASE_BLOCK))[65] = 65; */
for (int y = 0; y < 32; ++y)
{
for (int x = 0; x < 32; ++x)
{
((vu16*)MAP_BASE_ADR(MAP_BASE_BLOCK + 1))[x + y * 32] = 5;
}
}
for (int x = 0; x < 32; ++x) ((vu8*)MAP_BASE_ADR(MAP_BASE_BLOCK + 1))[x] = 16;
for (int x = 0; x < 32; ++x) ((vu8*)MAP_BASE_ADR(MAP_BASE_BLOCK + 1))[31 * 32 + x] = 16;
for (int y = 0; y < 32; ++y) ((vu8*)MAP_BASE_ADR(MAP_BASE_BLOCK + 1))[y * 32] = 16;
for (int y = 0; y < 32; ++y) ((vu8*)MAP_BASE_ADR(MAP_BASE_BLOCK + 1))[y * 32 + 31] = 16;
BGCTRL[0] = SCREEN_BASE(MAP_BASE_BLOCK + 0) | CHAR_BASE(0) | BG_SIZE_0 | BG_16_COLOR | BG_PRIORITY(1); // | CHAR_PALETTE(1);
BGCTRL[2] = SCREEN_BASE(MAP_BASE_BLOCK + 1) | CHAR_BASE(0) | BG_SIZE_1 | BG_16_COLOR | BG_PRIORITY(0); // | CHAR_PALETTE(1);
float rot = 0.0f;
float last_rot = rot;
float bg_scroll = 0;
int frame = 0;
while (1)
{
int sprite_frame = (int(floor(bg_scroll)) >> 3) & 1;
if (fabs(xdir) < 1e-1) sprite_frame = 0;
// if (ypos > 0) sprite_frame = 2;
int tile_start = sprite_frame * 2;
int pal = 0;
for (int i = 0; i < 128; ++i)
{
sprites[i].attr0 = ATTR0_DISABLED;
}
int sprite = 0;
// sprites[sprite].attr0 = OBJ_Y(int(ypos) + 80 - 8) | ATTR0_COLOR_16 | ATTR0_WIDE;
// sprites[sprite].attr1 = OBJ_X(int(xpos) + 120) | OBJ_SIZE(Sprite_16x8) | (dir ? ATTR1_FLIP_X : 0);
sprites[sprite].attr0 = OBJ_Y(int(0) + 80 - 16) | ATTR0_COLOR_16 | ATTR0_WIDE;
sprites[sprite].attr1 = OBJ_X(int(0) + 120 - 8) | OBJ_SIZE(Sprite_16x8) | (dir ? ATTR1_FLIP_X : 0);
sprites[sprite].attr2 = OBJ_CHAR(tile_start) | ATTR2_PALETTE(pal); // | OBJ_TRANSLUCENT;
sprite++;
// sprites[sprite].attr0 = OBJ_Y(int(ypos) + 80) | ATTR0_COLOR_16 | ATTR0_SQUARE;
// sprites[sprite].attr1 = OBJ_X(int(xpos) + 120) | OBJ_SIZE(Sprite_16x16) | (dir ? ATTR1_FLIP_X : 0);
sprites[sprite].attr0 = OBJ_Y(int(0) + 80 - 8) | ATTR0_COLOR_16 | ATTR0_SQUARE;
sprites[sprite].attr1 = OBJ_X(int(0) + 120 - 8) | OBJ_SIZE(Sprite_16x16) | (dir ? ATTR1_FLIP_X : 0);
sprites[sprite].attr2 = OBJ_CHAR(tile_start + 32) | ATTR2_PALETTE(pal); // | OBJ_TRANSLUCENT;
sprite++;
float st = sin(last_rot);
float ct = cos(last_rot);
last_rot = last_rot + (rot - last_rot) * 0.1;
int pa = int(0x100 * ct);
int pb =-int(0x100 * st);
int pc = int(0x100 * st);
int pd = int(0x100 * ct);
// don't setup any hw-regs until vblank
VBlankIntrWait();
// setup bg0 scroll
REG_BG0HOFS = int(bg_scroll) & 0xFFFF;
// setup bg2 transform
REG_BG2PA = pa;
REG_BG2PB = pb;
REG_BG2PC = pc;
REG_BG2PD = pd;
REG_BG2X = (int(xpos) << 8) - (pa * 120 + pb * 80);
REG_BG2Y = (int(ypos) << 8) - (pc * 120 + pd * 80);
++frame;
CpuSet(sprites, OAM, (128 * sizeof(OAM[0])) / 2);
scanKeys();
u32 held = keysHeld();
u32 down = keysDown();
u32 up = keysUp();
float upx = sin(rot);
float upy = -cos(rot);
float leftx = upy;
float lefty = -upx;
if (KEY_UP & down) { xdir = upx * 5; ydir = upy * 5; }
if (KEY_L & down) { rot += M_PI / 2; }
if (KEY_R & down) { rot -= M_PI / 2; }
/* if (KEY_L & up) { rot += M_PI / 4; }
if (KEY_R & up) { rot -= M_PI / 4; } */
// external forces
#if 0
xdir *= 0.95; // friction
ydir *= 0.95; // friction
#else
float a = leftx * xdir + lefty * ydir; // dot(dir, left)
float b = upx * xdir + upy * ydir; // dot(dir, up)
float new_xdir = upx * b + 0.85 * leftx * a;
float new_ydir = upy * b + 0.85 * lefty * a;
xdir = new_xdir;
ydir = new_ydir;
#endif
if (fabs(xdir) < 1e-1) xdir = 0;
if (fabs(ydir) < 1e-1) ydir = 0;
if (KEY_RIGHT & held) { xdir -= leftx * 0.5f; ydir -= lefty * 0.5f; dir = 0; }
if (KEY_LEFT & held) { xdir += leftx * 0.5f; ydir += lefty * 0.5f; dir = 1; }
xdir -= upx * 0.25; // gravity
ydir -= upy * 0.25; // gravity
float last_xpos = xpos;
float last_ypos = ypos;
// apply forces
xpos += xdir;
ypos += ydir;
// resolve constraints
if (xpos < 0) xpos = 0;
if (xpos > 255) xpos = 255;
if (ypos < 0) ypos = 0;
if (ypos > 255) ypos = 255;
float delta_xpos = last_xpos - xpos;
float delta_ypos = last_ypos - ypos;
bg_scroll += (delta_xpos * leftx + delta_ypos * lefty) * 0.5f;
}
return 0;
}
//---------------------------------------------------------------------------------
// Program entry point
//---------------------------------------------------------------------------------
int main(void) {
//---------------------------------------------------------------------------------
// the vblank interrupt must be enabled for VBlankIntrWait() to work
// since the default dispatcher handles the bios flags no vblank handler
// is required
irqInit();
irqEnable(IRQ_VBLANK);
// set mode 0, 1D mapping
REG_DISPCNT = MODE_0 | OBJ_1D_MAP;
init_oam(obj_buffer, 128);
// copy sprites to appropriate memory spots
u16 *palette_end = SPRITE_PALETTE;
u16 *tiles_end =SPRITE_GFX;
// blue slime
memcpy(palette_end, blueslimePal, blueslimePalLen);
memcpy(tiles_end, blueslimeTiles, blueslimeTilesLen);
palette_end += blueslimePalLen/2;
tiles_end += blueslimeTilesLen/2;
// drakee
memcpy(palette_end, drakeePal, drakeePalLen);
memcpy(tiles_end, drakeeTiles, drakeeTilesLen);
palette_end += drakeePalLen/2;
tiles_end += drakeeTilesLen/2;
// orange slime
memcpy(palette_end, orangeslimePal, orangeslimePalLen);
memcpy(tiles_end, orangeslimeTiles, orangeslimeTilesLen);
palette_end += orangeslimePalLen/2;
tiles_end += orangeslimeTilesLen/2;
// enable sprites
REG_DISPCNT |= OBJ_ON | OBJ_WIN_ENABLE;
u16 x = 0;
u16 y = 0;
s8 sprite = 1;
u16 status = ATTR0_NORMAL;
obj_buffer[0].attr0 = (y & 0x00ff) | ATTR0_NORMAL | ATTR0_COLOR_16 | ATTR0_SQUARE;
obj_buffer[0].attr1 = (x & 0x01ff) | ATTR1_SIZE_32;
obj_buffer[0].attr2 = OBJ_CHAR(0);
oam_copy(OAM, obj_buffer, 1);
setRepeat(1,1);
while (1)
{
// check keypad
scanKeys();
u16 keystate = keysDownRepeat();
u16 keydown = keysDown();
// directional pad
// move sprite
if (keystate & KEY_LEFT)
x -= 1;
else if (keystate & KEY_RIGHT)
x += 1;
if (keystate & KEY_UP)
y -= 1;
else if (keystate & KEY_DOWN)
y += 1;
// A
// enable/disable sprite
if (keydown & KEY_A)
{
if (status == ATTR0_NORMAL)
status = ATTR0_DISABLED;
else
status = ATTR0_NORMAL;
}
// L + R
// rotate sprites
if (keydown & KEY_R)
{
sprite++;
if (sprite > 2) sprite = 0;
}
else if (keydown & KEY_L)
{
sprite--;
if (sprite < 0) sprite = 2;
}
// set current sprite attributes
obj_buffer[0].attr0 = (y & 0x00ff) | status | ATTR0_COLOR_16 | ATTR0_SQUARE;
obj_buffer[0].attr1 = (x & 0x01ff) | ATTR1_SIZE_32;
obj_buffer[0].attr2 = OBJ_CHAR(sprite*16) | OBJ_PALETTE(sprite);
oam_copy(OAM, obj_buffer, 1);
VBlankIntrWait();
}
return 0;
}
