154 lines
4.2 KiB
C
154 lines
4.2 KiB
C
#include "apps.h"
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#include "os_gfx.h"
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#include "os_status.h"
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#include <stdio.h>
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#include <stdlib.h>
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#define GROUND_Y 34
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typedef enum {
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GAME_STATE_READY,
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GAME_STATE_PLAYING,
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GAME_STATE_OVER
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} game_state_t;
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static game_state_t s_game_state = GAME_STATE_READY;
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/* Fixed-point 8-bit physics for smooth 60 FPS jump arcs */
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#define FP_SHIFT 8
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#define TO_FP(val) ((int32_t)((val) << FP_SHIFT))
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#define FROM_FP(val) ((int16_t)((val) >> FP_SHIFT))
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static int32_t s_player_y_fp = TO_FP(GROUND_Y);
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static int32_t s_player_vy_fp = 0;
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static bool s_is_jumping = false;
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static int32_t s_obs_x_fp = TO_FP(72);
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static int16_t s_obs_h = 6;
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static uint16_t s_score = 0;
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static uint16_t s_high_score = 0;
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static void game_reset(void)
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{
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s_player_y_fp = TO_FP(GROUND_Y);
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s_player_vy_fp = 0;
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s_is_jumping = false;
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s_obs_x_fp = TO_FP(72);
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s_obs_h = 5 + (rand() % 4);
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s_score = 0;
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}
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static void game_init(void)
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{
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s_game_state = GAME_STATE_READY;
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s_high_score = 0;
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game_reset();
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}
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static void game_enter(void)
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{
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s_game_state = GAME_STATE_READY;
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game_reset();
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}
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static void game_update(uint32_t delta_ms)
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{
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sys_gfx_draw_line(0, GROUND_Y + 1, OLED_WIDTH - 1, GROUND_Y + 1, COLOR_WHITE);
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if (s_game_state == GAME_STATE_READY) {
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sys_gfx_draw_str_5x7(10, 8, "TINY JUMP", COLOR_WHITE);
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sys_gfx_draw_str_3x5(8, 20, "CLICK TO START", COLOR_WHITE);
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sys_gfx_draw_action_bar("C:JUMP", "H:HOME");
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sys_gfx_fill_rect(8, GROUND_Y - 5, 5, 5, COLOR_WHITE);
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return;
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}
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if (s_game_state == GAME_STATE_PLAYING) {
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// 60 FPS Jump Physics
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if (s_is_jumping) {
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s_player_y_fp += s_player_vy_fp;
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s_player_vy_fp += 34; // Gravity per frame
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if (s_player_y_fp >= TO_FP(GROUND_Y)) {
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s_player_y_fp = TO_FP(GROUND_Y);
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s_player_vy_fp = 0;
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s_is_jumping = false;
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}
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}
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// 60 FPS Obstacle Movement (~70 px/sec)
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s_obs_x_fp -= 300; // ~1.17 pixels per 60fps frame
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int16_t obs_x = FROM_FP(s_obs_x_fp);
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if (obs_x < -4) {
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s_obs_x_fp = TO_FP(72 + (rand() % 16));
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obs_x = FROM_FP(s_obs_x_fp);
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s_obs_h = 5 + (rand() % 5);
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s_score++;
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if (s_score > s_high_score) s_high_score = s_score;
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}
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int16_t player_y = FROM_FP(s_player_y_fp);
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// Collision Check (Hitbox: player is 5x5 at x=8..12, obs is 3xH at obs_x..obs_x+2)
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if (obs_x <= 13 && (obs_x + 3) >= 8) {
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if ((player_y - 1) >= (GROUND_Y - s_obs_h + 1)) {
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s_game_state = GAME_STATE_OVER;
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sys_gfx_show_toast("GAME OVER", 800);
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}
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}
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// Render Player and Obstacle
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sys_gfx_fill_rect(8, player_y - 5, 5, 5, COLOR_WHITE);
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sys_gfx_fill_rect(obs_x, GROUND_Y - s_obs_h + 1, 3, s_obs_h, COLOR_WHITE);
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char score_str[12];
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snprintf(score_str, sizeof(score_str), "SC:%u", s_score);
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sys_gfx_draw_str_3x5(45, 1, score_str, COLOR_WHITE);
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} else if (s_game_state == GAME_STATE_OVER) {
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sys_gfx_draw_str_5x7(12, 6, "GAME OVER", COLOR_WHITE);
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char buf[16];
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snprintf(buf, sizeof(buf), "SCORE: %u", s_score);
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sys_gfx_draw_str_3x5(16, 17, buf, COLOR_WHITE);
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snprintf(buf, sizeof(buf), "BEST: %u", s_high_score);
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sys_gfx_draw_str_3x5(16, 24, buf, COLOR_WHITE);
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sys_gfx_draw_action_bar("C:RESTART", "H:HOME");
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}
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}
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static void game_handle_input(input_action_t action)
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{
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if (action == INPUT_ACTION_CLICK) {
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if (s_game_state == GAME_STATE_READY) {
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s_game_state = GAME_STATE_PLAYING;
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game_reset();
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} else if (s_game_state == GAME_STATE_PLAYING) {
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if (!s_is_jumping) {
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s_is_jumping = true;
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s_player_vy_fp = -740; // Instant jump impulse (-2.9 px/frame)
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}
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} else if (s_game_state == GAME_STATE_OVER) {
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s_game_state = GAME_STATE_PLAYING;
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game_reset();
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}
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}
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}
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static void game_exit(void)
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{
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}
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const sys_app_t g_app_game = {
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.id = "game",
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.name = "Tiny Jump",
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.init = game_init,
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.enter = game_enter,
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.update = game_update,
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.handle_input = game_handle_input,
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.exit = game_exit,
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};
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