79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
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#include "snake.h"
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#include <stdlib.h>
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void place_food(struct state* state) {
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for (int i = 0; i < FOOD_COUNT; i++) {
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if (state->foodx[i] < 0 || state->foody[i] < 0) {
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state->foodx[i] = rand() % state->width;
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state->foody[i] = rand() % state->height;
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}
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}
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}
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int step_state(struct state* state, int key) {
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switch (key) {
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case KEY_UP:
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if (state->sy != 1) {
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state->sx = 0;
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state->sy = -1;
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}
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break;
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case KEY_DOWN:
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if (state->sy != -1) {
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state->sx = 0;
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state->sy = 1;
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}
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break;
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case KEY_LEFT:
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if (state->sx != 1) {
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state->sx = -1;
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state->sy = 0;
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}
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break;
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case KEY_RIGHT:
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if (state->sx != -1) {
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state->sx = 1;
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state->sy = 0;
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}
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break;
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default:
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break;
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}
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int new_x = state->snake->x + state->sx;
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int new_y = state->snake->y + state->sy;
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if (new_x < 0 || new_x >= state->width || new_y < 0 || new_y >= state->height) {
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return END_WALL;
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}
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if (is_snake(state->snake, new_x, new_y)) {
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return END_SNAKE;
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}
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for (int i = 0; i < FOOD_COUNT; i++) {
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if (state->foodx[i] == new_x && state->foody[i] == new_y) {
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state->foodx[i] = -1;
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state->foody[i] = -1;
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state->snake = add_snake(state->snake, new_x, new_y);
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for (int j = 0; j < FOOD_COUNT; j++) {
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if (state->foodx[j] != -1) {
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return END_CONTINUE;
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}
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}
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return END_FOOD;
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}
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}
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state->snake = add_snake(state->snake, new_x, new_y);
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state->snake = remove_snake(state->snake);
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return END_CONTINUE;
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}
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