111 lines
3.8 KiB
Plaintext
111 lines
3.8 KiB
Plaintext
// example from https://github.com/steux/cc7800 - license: GPLv3
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#include "prosystem.h"
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#include "gfx.h"
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#define DMA_CHECK
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#define VERTICAL_SCROLLING
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#define _MS_DL_SIZE 64
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#define _MS_DL_MALLOC(y) ((y == 6 || y == 7 || y == 8)?_MS_DL_SIZE * 2:_MS_DL_SIZE)
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#include "multisprite.h"
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char i, counter, xpos, ypos;
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char *ptr;
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char xchest;
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#define NB_SPRITES 32
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ramchip short sp_xpos[NB_SPRITES], sp_ypos[NB_SPRITES];
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ramchip char sp_direction[NB_SPRITES];
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const signed short dx[24] = {300, 289, 259, 212, 149, 77, 0, -77, -150, -212, -259, -289, -300, -289, -259, -212, -149, -77, 0, 77, 149, 212, 259, 289};
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const signed short dy[24] = {0, 124, 240, 339, 415, 463, 480, 463, 415, 339, 240, 124, 0, -124, -239, -339, -415, -463, -480, -463, -415, -339, -240, -124};
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const char horizontal_pingpong[24] = { 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13 };
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const char vertical_pingpong[24] = { 0, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 };
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const char background[22] = { 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0 };
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#define LTR(x) (((x) - ' ') * 2)
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const char hello_world[] = { LTR('H'), LTR('E'), LTR('L'), LTR('L'), LTR('O'), LTR(' '), LTR('W'), LTR('O'), LTR('R'), LTR('L'), LTR('D') };
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void main()
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{
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counter = 0;
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multisprite_init();
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multisprite_set_charbase(tiles);
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// Set up a full background
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for (counter = 0; counter < _MS_DLL_ARRAY_SIZE; counter++) {
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if (counter & 2) {
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ptr = background + 2;
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} else {
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ptr = background;
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}
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multisprite_display_tiles(0, _MS_DLL_ARRAY_SIZE - 1 - counter, ptr, 20, 1);
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}
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multisprite_save();
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*P0C1 = multisprite_color(0x1c); // Setup Palette 0: Yellow
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*P0C2 = multisprite_color(0xc5); // Green
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*P0C3 = 0x0f; // White
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*P1C1 = multisprite_color(0x55); // Dark pink
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*P1C2 = multisprite_color(0x5B); // Light pink
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*P2C1 = multisprite_color(0x32);
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*P2C2 = multisprite_color(0x3D);
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*P2C3 = multisprite_color(0x37);
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*P3C1 = multisprite_color(0x92);
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*P3C2 = multisprite_color(0x97);
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*P3C3 = multisprite_color(0x9D);
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// Initialize sprites
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for (ypos = 0, xpos = 0, i = 0, X = 0; X != NB_SPRITES; xpos++, ypos++, X++) {
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sp_xpos[X] = xpos << 8;
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sp_ypos[X] = ypos << 8;
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sp_direction[X] = i++;
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if (i == 24) i = 0;
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}
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// Main loop
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do {
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// Prepare scrolling data
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if (multisprite_vscroll_buffer_empty()) {
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if (counter & 2) {
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ptr = background + 2;
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} else {
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ptr = background;
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}
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multisprite_vscroll_buffer_tiles(0, ptr, 20, 1);
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multisprite_vscroll_buffer_sprite(xchest, chest, 2, 3);
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xchest += 45;
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counter++;
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}
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while (*MSTAT & 0x80);
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multisprite_flip();
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multisprite_vertical_scrolling(-1);
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multisprite_reserve_dma(104, sizeof(hello_world), 2);
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for (i = 0; i != NB_SPRITES; i++) {
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X = i;
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Y = sp_direction[X];
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sp_xpos[X] += dx[Y];
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sp_ypos[X] += dy[Y];
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xpos = sp_xpos[X] >> 8;
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ypos = sp_ypos[X] >> 8;
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if ((xpos < 5 && (dx[Y] >> 8) < 0) ||
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(xpos >= 150 && (dx[Y] >> 8) >= 0)) {
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sp_direction[X] = horizontal_pingpong[Y];
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}
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if ((ypos < 5 && (dy[Y] >> 8) < 0) ||
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(ypos >= MS_YMAX - 20 && (dy[Y] >> 8) >= 0)) {
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sp_direction[X] = vertical_pingpong[Y];
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}
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multisprite_display_sprite(xpos, ypos, bb_char1, 2, 0);
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}
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for (xpos = 40, i = 0; i != sizeof(hello_world); xpos += 8, i++) {
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ptr = chars0 + hello_world[X = i];
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multisprite_display_sprite_fast(xpos, 104, ptr, 2, 2);
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}
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} while(1);
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}
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