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- #ifdef CX4_CPP
- //Build OAM
- void Cx4::op00_00() {
- uint32 oamptr = ram[0x626] << 2;
- for(int32 i = 0x1fd; i > oamptr && i >= 0; i -= 4) {
- //clear oam-to-be
- if(i >= 0)ram[i] = 0xe0;
- }
- uint16 globalx, globaly;
- uint32 oamptr2;
- int16 sprx, spry;
- uint8 sprname, sprattr;
- uint8 sprcount;
- globalx = readw(0x621);
- globaly = readw(0x623);
- oamptr2 = 0x200 + (ram[0x626] >> 2);
- if(!ram[0x620])return;
- sprcount = 128 - ram[0x626];
- uint8 offset = (ram[0x626] & 3) * 2;
- uint32 srcptr = 0x220;
- for(int i = ram[0x620]; i > 0 && sprcount > 0; i--, srcptr += 16) {
- sprx = readw(srcptr) - globalx;
- spry = readw(srcptr + 2) - globaly;
- sprname = ram[srcptr + 5];
- sprattr = ram[srcptr + 4] | ram[srcptr + 6];
- uint32 spraddr = readl(srcptr + 7);
- if(bus.read(spraddr)) {
- int16 x, y;
- for(int sprcnt = bus.read(spraddr++); sprcnt > 0 && sprcount > 0; sprcnt--, spraddr += 4) {
- x = (int8)bus.read(spraddr + 1);
- if(sprattr & 0x40) {
- x = -x - ((bus.read(spraddr) & 0x20) ? 16 : 8);
- }
- x += sprx;
- if(x >= -16 && x <= 272) {
- y = (int8)bus.read(spraddr + 2);
- if(sprattr & 0x80) {
- y = -y - ((bus.read(spraddr) & 0x20) ? 16 : 8);
- }
- y += spry;
- if(y >= -16 && y <= 224) {
- ram[oamptr ] = (uint8)x;
- ram[oamptr + 1] = (uint8)y;
- ram[oamptr + 2] = sprname + bus.read(spraddr + 3);
- ram[oamptr + 3] = sprattr ^ (bus.read(spraddr) & 0xc0);
- ram[oamptr2] &= ~(3 << offset);
- if(x & 0x100)ram[oamptr2] |= 1 << offset;
- if(bus.read(spraddr) & 0x20)ram[oamptr2] |= 2 << offset;
- oamptr += 4;
- sprcount--;
- offset = (offset + 2) & 6;
- if(!offset)oamptr2++;
- }
- }
- }
- } else if(sprcount > 0) {
- ram[oamptr ] = (uint8)sprx;
- ram[oamptr + 1] = (uint8)spry;
- ram[oamptr + 2] = sprname;
- ram[oamptr + 3] = sprattr;
- ram[oamptr2] &= ~(3 << offset);
- if(sprx & 0x100)ram[oamptr2] |= 3 << offset;
- else ram[oamptr2] |= 2 << offset;
- oamptr += 4;
- sprcount--;
- offset = (offset + 2) & 6;
- if(!offset)oamptr2++;
- }
- }
- }
- //Scale and Rotate
- void Cx4::op00_03() {
- C4DoScaleRotate(0);
- }
- //Transform Lines
- void Cx4::op00_05() {
- C4WFX2Val = read(0x1f83);
- C4WFY2Val = read(0x1f86);
- C4WFDist = read(0x1f89);
- C4WFScale = read(0x1f8c);
- //Transform Vertices
- uint32 ptr = 0;
- for(int32 i = readw(0x1f80); i > 0; i--, ptr += 0x10) {
- C4WFXVal = readw(ptr + 1);
- C4WFYVal = readw(ptr + 5);
- C4WFZVal = readw(ptr + 9);
- C4TransfWireFrame();
- //Displace
- writew(ptr + 1, C4WFXVal + 0x80);
- writew(ptr + 5, C4WFYVal + 0x50);
- }
- writew(0x600, 23);
- writew(0x602, 0x60);
- writew(0x605, 0x40);
- writew(0x600 + 8, 23);
- writew(0x602 + 8, 0x60);
- writew(0x605 + 8, 0x40);
- ptr = 0xb02;
- uint32 ptr2 = 0;
- for(int32 i = readw(0xb00); i > 0; i--, ptr += 2, ptr2 += 8) {
- C4WFXVal = readw((read(ptr + 0) << 4) + 1);
- C4WFYVal = readw((read(ptr + 0) << 4) + 5);
- C4WFX2Val = readw((read(ptr + 1) << 4) + 1);
- C4WFY2Val = readw((read(ptr + 1) << 4) + 5);
- C4CalcWireFrame();
- writew(ptr2 + 0x600, C4WFDist ? C4WFDist : 1);
- writew(ptr2 + 0x602, C4WFXVal);
- writew(ptr2 + 0x605, C4WFYVal);
- }
- }
- //Scale and Rotate
- void Cx4::op00_07() {
- C4DoScaleRotate(64);
- }
- //Draw Wireframe
- void Cx4::op00_08() {
- C4DrawWireFrame();
- }
- //Disintegrate
- void Cx4::op00_0b() {
- uint8 width, height;
- uint32 startx, starty;
- uint32 srcptr;
- uint32 x, y;
- int32 scalex, scaley;
- int32 cx, cy;
- int32 i, j;
- width = read(0x1f89);
- height = read(0x1f8c);
- cx = readw(0x1f80);
- cy = readw(0x1f83);
- scalex = (int16)readw(0x1f86);
- scaley = (int16)readw(0x1f8f);
- startx = -cx * scalex + (cx << 8);
- starty = -cy * scaley + (cy << 8);
- srcptr = 0x600;
- for(i = 0; i < (width * height) >> 1; i++) {
- write(i, 0);
- }
- for(y = starty, i = 0;i < height; i++, y += scaley) {
- for(x = startx, j = 0;j < width; j++, x += scalex) {
- if((x >> 8) < width && (y >> 8) < height && (y >> 8) * width + (x >> 8) < 0x2000) {
- uint8 pixel = (j & 1) ? (ram[srcptr] >> 4) : (ram[srcptr]);
- int32 index = (y >> 11) * width * 4 + (x >> 11) * 32 + ((y >> 8) & 7) * 2;
- uint8 mask = 0x80 >> ((x >> 8) & 7);
- if(pixel & 1)ram[index ] |= mask;
- if(pixel & 2)ram[index + 1] |= mask;
- if(pixel & 4)ram[index + 16] |= mask;
- if(pixel & 8)ram[index + 17] |= mask;
- }
- if(j & 1)srcptr++;
- }
- }
- }
- //Bitplane Wave
- void Cx4::op00_0c() {
- uint32 destptr = 0;
- uint32 waveptr = read(0x1f83);
- uint16 mask1 = 0xc0c0;
- uint16 mask2 = 0x3f3f;
- for(int j = 0; j < 0x10; j++) {
- do {
- int16 height = -((int8)read(waveptr + 0xb00)) - 16;
- for(int i = 0; i < 40; i++) {
- uint16 temp = readw(destptr + wave_data[i]) & mask2;
- if(height >= 0) {
- if(height < 8) {
- temp |= mask1 & readw(0xa00 + height * 2);
- } else {
- temp |= mask1 & 0xff00;
- }
- }
- writew(destptr + wave_data[i], temp);
- height++;
- }
- waveptr = (waveptr + 1) & 0x7f;
- mask1 = (mask1 >> 2) | (mask1 << 6);
- mask2 = (mask2 >> 2) | (mask2 << 6);
- } while(mask1 != 0xc0c0);
- destptr += 16;
- do {
- int16 height = -((int8)read(waveptr + 0xb00)) - 16;
- for(int i = 0; i < 40; i++) {
- uint16 temp = readw(destptr + wave_data[i]) & mask2;
- if(height >= 0) {
- if(height < 8) {
- temp |= mask1 & readw(0xa10 + height * 2);
- } else {
- temp |= mask1 & 0xff00;
- }
- }
- writew(destptr + wave_data[i], temp);
- height++;
- }
- waveptr = (waveptr + 1) & 0x7f;
- mask1 = (mask1 >> 2) | (mask1 << 6);
- mask2 = (mask2 >> 2) | (mask2 << 6);
- } while(mask1 != 0xc0c0);
- destptr += 16;
- }
- }
- #endif
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