#include #include void readn(byte *dst, unsigned int addr, int c) { GD.__start(addr); while (c--) *dst++ = SPI.transfer(0); GD.__end(); } static byte coll[256]; static void load_coll() { while (GD.rd(VBLANK) == 0) // Wait until vblank ; while (GD.rd(VBLANK) == 1) // Wait until display ; while (GD.rd(VBLANK) == 0) // Wait until vblank ; readn(coll, COLLISION, sizeof(coll)); } void setup() { int i; Serial.begin(1000000); // JCB GD.begin(); GD.wr(JK_MODE, 1); GD.wr16(RAM_PAL, RGB(255,255,255)); // Use the 4 palettes: // 0 pink, for J sprites // 1 green, for K sprites // 2 dark pink, J collisions // 3 dark green, K collisions for (i = 0; i < 256; i++) { GD.wr16(RAM_SPRPAL + (0 * 512) + (i << 1), RGB(255, 0, 255)); GD.wr16(RAM_SPRPAL + (1 * 512) + (i << 1), RGB(0, 255, 0)); GD.wr16(RAM_SPRPAL + (2 * 512) + (i << 1), RGB(100, 0, 100)); GD.wr16(RAM_SPRPAL + (3 * 512) + (i << 1), RGB(0, 100, 0)); } } byte spr; static void polar(float th, int r, byte jk) { // add 2 to the palette if this sprite is colliding byte colliding = coll[spr] != 0xff; GD.sprite(spr, 200 + int(r * sin(th)), 142 + int(r * cos(th)), 0, jk + (colliding ? 2 : 0), 0, jk); spr++; } void loop() { byte i; float th; spr = 0; // draw the J sprites (pink) for (i = 0; i < 5; i++) { th = (millis() / 3000.) + 2 * PI * i / 5; polar(th, 134, 0); } // draw the K sprites (green) randomSeed(4); for (i = 0; i < 17; i++) { th = (millis() / float(random(1000,3000))) + 2 * PI * i / 17; polar(th, 134, 1); } load_coll(); }