145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
/**
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* What do we need
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* * [ ] screen setup
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*/
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#include <hardware/custom.h>
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#include <hardware/cia.h>
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#include <clib/graphics_protos.h>
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#include "system/system.h"
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#include "system/copper.h"
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#include "system/blitter.h"
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#include "screen.h"
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extern struct Custom far custom;
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extern struct CIA far ciaa;
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uint16_t custom_color = (uint16_t)offsetof(Custom, color);
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uint16_t custom_sprite = (uint16_t)offsetof(Custom, sprpt);
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uint16_t custom_sprite_control = (uint16_t)offsetof(Custom, spr);
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extern unsigned char chip coolbun[];
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int main(void) {
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struct ScreenDefinition screenDefinition;
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struct ActiveScreenBufferDetails activeScreenBufferDetails;
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uint16_t *copperlist, *currentCopperlist;
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void *copperlistBitplanePointers[8][2];
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int i, plane, x, y, dirX, dirY, shift, byteX, clearY;
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allocateDoubleBufferedScreenMemory(
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&screenDefinition,
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&activeScreenBufferDetails,
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320,
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256,
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2
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);
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copperlist = prepareNewCopperlist(300);
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currentCopperlist = addDisplayToCopperlist(
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copperlist,
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&screenDefinition,
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&activeScreenBufferDetails,
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&copperlistBitplanePointers
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);
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COPPERLIST_MOVE(currentCopperlist, custom_color, 0x3a6);
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COPPERLIST_MOVE(currentCopperlist, custom_color + 2, 0x000);
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COPPERLIST_MOVE(currentCopperlist, custom_color + 4, 0xfff);
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currentCopperlist = setUpEmptySpritesInCopperlist(currentCopperlist);
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endCopperlist(currentCopperlist);
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takeOverSystem();
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setCopperlist(copperlist);
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setUpDisplay((uint32_t)screenDefinition.bitplanes);
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// Render a bun at 32x50
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x = 32;
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y = 50;
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dirX = 1;
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dirY = 1;
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while (1) {
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WaitTOF();
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swapCurrentScreenBuffer(&screenDefinition, &activeScreenBufferDetails);
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shift = x & 15;
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byteX = ((x >> 4) * 2);
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clearY = y - 4;
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if (clearY < 0) clearY = 0;
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if (clearY + 40 > 255) clearY = 255 - 40;
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for (plane = 0; plane < 2; ++plane) {
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custom.bltcon0 = BLTCON0(0xc0, 0, 0, 0, 1, 0);
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custom.bltcon1 = 0;
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custom.bltadat = 0x0000;
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custom.bltdpt = activeScreenBufferDetails.planes[plane] + (clearY * 320 / 8);
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custom.bltafwm = 0xffff;
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custom.bltalwm = 0xffff;
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custom.bltsize = BLTSIZE(20, 40);
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custom.bltdmod = 0;
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WaitBlit();
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}
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for (plane = 0; plane < 2; ++plane) {
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custom.bltcon0 = BLTCON0(0xf0, 1, 0, 0, 1, shift);
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custom.bltcon1 = BLTCON1(BLITTER_ASCENDING, 0);
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custom.bltapt = coolbun + (plane * 4 * 32);
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custom.bltdpt = activeScreenBufferDetails.planes[plane] + (y * 320 / 8) + byteX;
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custom.bltafwm = 0xffff;
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if (shift == 0) {
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custom.bltalwm = 0xffff;;
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} else {
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custom.bltalwm = 0x0000;
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}
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custom.bltamod = shift ? -2 : 0;
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custom.bltdmod = 40 - (shift ? 6 : 4);
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custom.bltsize = (shift ? 3 : 2) + (32 << 6);
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WaitBlit();
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}
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x += dirX;
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if (x == 320 - 32) {
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x -= 1;
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dirX = -dirX;
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}
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if (x < 0) {
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x = 0;
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dirX = -dirX;
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}
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y += dirY;
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if (y == 256 - 32) {
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y -= 1;
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dirY = -dirY;
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}
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if (y < 0) {
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y = 0;
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dirY = -dirY;
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}
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if ((ciaa.ciapra >> 6) != 3) break;
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}
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giveBackSystem();
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freeCopperlist(copperlist);
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teardownScreen(&screenDefinition);
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}
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