diff options
Diffstat (limited to 'game.c')
| -rw-r--r-- | game.c | 227 |
1 files changed, 227 insertions, 0 deletions
@@ -0,0 +1,227 @@ +#include <stdio.h> + +#define TB_IMPL +#include "termbox2.h" + +#define MIN_W 40 +#define MIN_H 12 +#define SIDEBAR_W 40 +#define CP_H 0x2500 +#define CP_V 0x2502 +#define CP_TL 0x250c +#define CP_TR 0x2510 +#define CP_BL 0x2514 +#define CP_BR 0x2518 + +static void draw_border(int x, int y, int w, int h, uintattr_t fg) { + int ix; + int iy; + + for (ix = 0; ix < w; ix++) { + tb_set_cell(x + ix, y, CP_H, fg, TB_DEFAULT); + tb_set_cell(x + ix, y + h - 1, CP_H, fg, TB_DEFAULT); + } + for (iy = 0; iy < h; iy++) { + tb_set_cell(x, y + iy, CP_V, fg, TB_DEFAULT); + tb_set_cell(x + w - 1, y + iy, CP_V, fg, TB_DEFAULT); + } + + tb_set_cell(x, y, CP_TL, fg, TB_DEFAULT); + tb_set_cell(x + w - 1, y, CP_TR, fg, TB_DEFAULT); + tb_set_cell(x, y + h - 1, CP_BL, fg, TB_DEFAULT); + tb_set_cell(x + w - 1, y + h - 1, CP_BR, fg, TB_DEFAULT); +} + +static void draw_room(int x, int y, int w, int h, uintattr_t fg) { + draw_border(x, y, w, h, fg); + tb_set_cell(x + w / 2, y, '+', fg, TB_DEFAULT); +} + +static void get_layout(int w, int h, int *map_x, int *map_y, int *map_w, + int *map_h, int *side_x, int *side_y, int *side_w, int *side_h, + int *msg1_y, int *msg2_y) { + *map_x = 0; + *map_y = 0; + *map_w = w - SIDEBAR_W; + *map_h = h - 2; + *side_x = w - SIDEBAR_W; + *side_y = 0; + *side_w = SIDEBAR_W; + *side_h = h - 2; + *msg1_y = h - 2; + *msg2_y = h - 1; +} + +static void draw_map(int map_x, int map_y, int map_w, int map_h, int px, + int py) { + if (px >= 0 && py >= 0) { + tb_set_cell(map_x + px, map_y + py, '@', TB_WHITE | TB_BOLD, TB_DEFAULT); + } +} + +static void draw_progress_bar(int x, int y, int w, int value, int max) { + int filled; + int ix; + int inner_w = w - 2; + + if (w < 4) { + return; + } + if (max <= 0) { + max = 1; + } + if (value < 0) { + value = 0; + } + if (value > max) { + value = max; + } + + filled = (inner_w * value) / max; + tb_set_cell(x, y, '[', TB_WHITE, TB_DEFAULT); + for (ix = 0; ix < inner_w; ix++) { + uintattr_t fg = ix < filled ? TB_GREEN : TB_WHITE; + uint32_t ch = ix < filled ? '=' : ' '; + tb_set_cell(x + 1 + ix, y, ch, fg, TB_DEFAULT); + } + tb_set_cell(x + w - 1, y, ']', TB_WHITE, TB_DEFAULT); +} + +static void draw_stats(int x, int y) { + tb_print(x, y, TB_WHITE | TB_BOLD, TB_DEFAULT, "Stats"); + tb_print(x, y + 2, TB_WHITE, TB_DEFAULT, "HP 12/12"); + draw_progress_bar(x, y + 3, 18, 12, 12); + tb_print(x, y + 4, TB_WHITE, TB_DEFAULT, "AC: 7"); + tb_print(x, y + 5, TB_WHITE, TB_DEFAULT, "Str: 16"); + tb_print(x, y + 6, TB_WHITE, TB_DEFAULT, "Gold: 42"); +} + +static void draw_inventory(int x, int y) { + tb_print(x, y, TB_WHITE | TB_BOLD, TB_DEFAULT, "Inventory"); + tb_print(x, y + 2, TB_WHITE, TB_DEFAULT, "a) dagger"); + tb_print(x, y + 3, TB_WHITE, TB_DEFAULT, "b) ration"); + tb_print(x, y + 4, TB_WHITE, TB_DEFAULT, "c) potion"); + tb_print(x, y + 5, TB_WHITE, TB_DEFAULT, "d) scroll"); +} + +static const char *status_msg = ""; + +static void update_status(const char *message) { + status_msg = message ? message : ""; +} + +static void render(int px, int py, int *out_map_w, int *out_map_h) { + int w; + int h; + int map_x; + int map_y; + int map_w; + int map_h; + int side_x; + int side_y; + int side_w; + int side_h; + int stats_x; + int stats_y; + int stats_w; + int stats_h; + int inv_x; + int inv_y; + int inv_w; + int inv_h; + int msg1_y; + int msg2_y; + + w = tb_width(); + h = tb_height(); + get_layout(w, h, &map_x, &map_y, &map_w, &map_h, &side_x, &side_y, &side_w, &side_h, &msg1_y, &msg2_y); + + tb_clear(); + if (w < MIN_W || h < MIN_H || map_w < 8 || map_h < 3) { + tb_print(1, 1, TB_RED | TB_BOLD, TB_DEFAULT, "Window too small. Resize to at least 40x12."); + tb_present(); + *out_map_w = map_w; + *out_map_h = map_h; + return; + } + + draw_border(map_x, map_y, map_w, map_h, TB_WHITE); + draw_map(map_x + 1, map_y + 1, map_w - 2, map_h - 2, px, py); + + stats_x = side_x; + stats_y = side_y; + stats_w = side_w; + stats_h = 11; + inv_x = side_x; + inv_y = side_y + stats_h; + inv_w = side_w; + inv_h = side_h - stats_h; + if (stats_w >= 12 && stats_h >= 9) { + draw_border(stats_x, stats_y, stats_w, stats_h, TB_WHITE); + draw_stats(stats_x + 2, stats_y + 1); + } + if (inv_w >= 12 && inv_h >= 7) { + draw_border(inv_x, inv_y, inv_w, inv_h, TB_WHITE); + draw_inventory(inv_x + 2, inv_y + 1); + } + + tb_print(2, msg1_y, TB_GREEN, TB_DEFAULT, status_msg); + tb_print(2, msg2_y, TB_WHITE, TB_DEFAULT, "Move: arrows Quit: q/ESC"); + + tb_present(); + *out_map_w = map_w - 2; + *out_map_h = map_h - 2; +} + +static int clamp(int value, int min, int max) { + if (value < min) { + return min; + } + if (value > max) { + return max; + } + return value; +} + +int main(void) { + int px = 6; + int py = 4; + int running = 1; + int map_w = 0; + int map_h = 0; + + if (tb_init() != TB_OK) { + fprintf(stderr, "Failed to init termbox.\n"); + return 1; + } + + tb_set_input_mode(TB_INPUT_ESC); + update_status("You feel like you have a lot of potential."); + while (running) { + struct tb_event ev; + + render(px, py, &map_w, &map_h); + tb_poll_event(&ev); + if (ev.type == TB_EVENT_KEY) { + if (ev.key == TB_KEY_ESC || ev.ch == 'q') { + running = 0; + } else if (ev.key == TB_KEY_ARROW_UP) { + py -= 1; + } else if (ev.key == TB_KEY_ARROW_DOWN) { + py += 1; + } else if (ev.key == TB_KEY_ARROW_LEFT) { + px -= 1; + } else if (ev.key == TB_KEY_ARROW_RIGHT) { + px += 1; + } + px = clamp(px, 0, map_w > 1 ? map_w - 1 : 0); + py = clamp(py, 0, map_h > 1 ? map_h - 1 : 0); + } else if (ev.type == TB_EVENT_RESIZE) { + px = clamp(px, 0, map_w > 1 ? map_w - 1 : 0); + py = clamp(py, 0, map_h > 1 ? map_h - 1 : 0); + } + } + + tb_shutdown(); + return 0; +} |