104 lines
1.4 KiB
C
104 lines
1.4 KiB
C
#include "snake.h"
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#include "display.h"
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unsigned char len = 0;
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Body snake[40] = {{0, 0}, 0};
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void snake_init()
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{
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// Initialize snake
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snake[len].d.x = XXX/2;
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snake[len].d.y = YYY/2;
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snake[len].m = R;
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}
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void body_move(Body b)
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{
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switch(b.m)
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{
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case R:
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b.d.x++;
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break;
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case L:
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b.d.x--;
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break;
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case U:
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b.d.y--;
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break;
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case D:
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b.d.y++;
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break;
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}
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}
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void snake_move()
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{
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int i = 0;
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for(; i <= len; i++)
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{
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//All body parts move
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body_move(snake[i]);
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}
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for(i = 1; i <= len; i++)
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{
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//Sync move direction for next move
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snake[i].m = snake[i - 1].m;
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}
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}
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void body_add()
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{
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// Copy last body part to new body part
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len++;
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snake[len].m = snake[len - 1].m;
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snake[len].d.x = snake[len - 1].d.x;
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snake[len].d.y = snake[len - 1].d.y;
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// Judge the direction of new body part
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switch(snake[len].m)
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{
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case R:
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snake[len].d.x--;
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break;
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case L:
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snake[len].d.x++;
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break;
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case U:
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snake[len].d.y++;
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break;
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case D:
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snake[len].d.y--;
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break;
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}
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}
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void snake_draw()
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{
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int i=1;
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sAddDot(snake[0].d.x,snake[0].d.y);
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sAddDot(snake[0].d.x+1,snake[0].d.y);
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sAddDot(snake[0].d.x,snake[0].d.y+1);
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sAddDot(snake[0].d.x-1,snake[0].d.y);
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sAddDot(snake[0].d.x,snake[0].d.y-1);
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for(;i<=len;i++)
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{
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sAddDot(snake[i].d.x,snake[i].d.y);
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}
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}
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void snake_test()
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{
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//Add Body to test
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int i = 0;
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for(; i < 2; i++)
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body_add();
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} |