mirror of https://github.com/nmlgc/ReC98.git
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
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#include "th01/sprites/shape8x8.h"
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#include "th01/main/shape.hpp"
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#define shape8x8_put(shape, left, top, col) \
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dots8x8_t sprite = sSHAPE8X8[shape]; \
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vram_offset_t vram_offset_topleft = vram_offset_divmul(left, top); \
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int first_bit = (left % BYTE_DOTS); \
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if((left < 0) || (left >= RES_X) || (top < 0) || (top >= RES_Y)) { \
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return; \
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} \
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grcg_put_8x8_mono(vram_offset_topleft, first_bit, sprite.rows, col);
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void shape8x8_diamond_put(screen_x_t left, vram_y_t top, int col)
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{
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shape8x8_put(SHAPE8X8_DIAMOND, left, top, col);
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}
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void shape8x8_star_put(screen_x_t left, vram_y_t top, int col)
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{
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shape8x8_put(SHAPE8X8_STAR, left, top, col);
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}
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void shape8x8_flake_put(screen_x_t left, vram_y_t top, int col)
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{
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shape8x8_put(SHAPE8X8_FLAKE, left, top, col);
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}
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void shape_ellipse_arc_put(
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screen_x_t center_x,
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vram_y_t center_y,
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pixel_t radius_x,
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pixel_t radius_y,
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int col,
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unsigned char angle_step,
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unsigned char angle_start,
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unsigned char angle_end
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)
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{
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int angle; // 16 bits to correctly work for an [angle_end] of 0xFF
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dots8_t cache_dots = 0;
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vram_offset_t cache_vram_offset = -1;
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grcg_setcolor_rmw(col);
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if(angle_start > angle_end) {
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return;
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}
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for(angle = angle_start; angle <= angle_end; angle += angle_step) {
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vram_offset_t vram_offset;
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screen_x_t cur_x = polar_x(center_x, radius_x, angle);
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vram_y_t cur_y = polar_y(center_y, radius_y, angle);
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vram_offset = vram_offset_shift(cur_x, cur_y);
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if(cache_vram_offset != vram_offset) {
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if(
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(cur_x >= 0) && (cur_x < RES_X) &&
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(cache_vram_offset >= 0) && (cache_vram_offset < PLANE_SIZE)
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) {
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VRAM_PUT(B, cache_vram_offset, cache_dots, 8);
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}
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cache_dots = ((0x80) >> (cur_x & (BYTE_DOTS - 1)));
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cache_vram_offset = vram_offset;
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} else {
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cache_dots |= ((0x80) >> (cur_x & (BYTE_DOTS - 1)));
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}
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}
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grcg_off();
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}
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