2022-01-13
This commit is contained in:
commit
ca7d40c93b
|
@ -0,0 +1,116 @@
|
||||||
|
CC0 1.0 Universal
|
||||||
|
|
||||||
|
Statement of Purpose
|
||||||
|
|
||||||
|
The laws of most jurisdictions throughout the world automatically confer
|
||||||
|
exclusive Copyright and Related Rights (defined below) upon the creator and
|
||||||
|
subsequent owner(s) (each and all, an "owner") of an original work of
|
||||||
|
authorship and/or a database (each, a "Work").
|
||||||
|
|
||||||
|
Certain owners wish to permanently relinquish those rights to a Work for the
|
||||||
|
purpose of contributing to a commons of creative, cultural and scientific
|
||||||
|
works ("Commons") that the public can reliably and without fear of later
|
||||||
|
claims of infringement build upon, modify, incorporate in other works, reuse
|
||||||
|
and redistribute as freely as possible in any form whatsoever and for any
|
||||||
|
purposes, including without limitation commercial purposes. These owners may
|
||||||
|
contribute to the Commons to promote the ideal of a free culture and the
|
||||||
|
further production of creative, cultural and scientific works, or to gain
|
||||||
|
reputation or greater distribution for their Work in part through the use and
|
||||||
|
efforts of others.
|
||||||
|
|
||||||
|
For these and/or other purposes and motivations, and without any expectation
|
||||||
|
of additional consideration or compensation, the person associating CC0 with a
|
||||||
|
Work (the "Affirmer"), to the extent that he or she is an owner of Copyright
|
||||||
|
and Related Rights in the Work, voluntarily elects to apply CC0 to the Work
|
||||||
|
and publicly distribute the Work under its terms, with knowledge of his or her
|
||||||
|
Copyright and Related Rights in the Work and the meaning and intended legal
|
||||||
|
effect of CC0 on those rights.
|
||||||
|
|
||||||
|
1. Copyright and Related Rights. A Work made available under CC0 may be
|
||||||
|
protected by copyright and related or neighboring rights ("Copyright and
|
||||||
|
Related Rights"). Copyright and Related Rights include, but are not limited
|
||||||
|
to, the following:
|
||||||
|
|
||||||
|
i. the right to reproduce, adapt, distribute, perform, display, communicate,
|
||||||
|
and translate a Work;
|
||||||
|
|
||||||
|
ii. moral rights retained by the original author(s) and/or performer(s);
|
||||||
|
|
||||||
|
iii. publicity and privacy rights pertaining to a person's image or likeness
|
||||||
|
depicted in a Work;
|
||||||
|
|
||||||
|
iv. rights protecting against unfair competition in regards to a Work,
|
||||||
|
subject to the limitations in paragraph 4(a), below;
|
||||||
|
|
||||||
|
v. rights protecting the extraction, dissemination, use and reuse of data in
|
||||||
|
a Work;
|
||||||
|
|
||||||
|
vi. database rights (such as those arising under Directive 96/9/EC of the
|
||||||
|
European Parliament and of the Council of 11 March 1996 on the legal
|
||||||
|
protection of databases, and under any national implementation thereof,
|
||||||
|
including any amended or successor version of such directive); and
|
||||||
|
|
||||||
|
vii. other similar, equivalent or corresponding rights throughout the world
|
||||||
|
based on applicable law or treaty, and any national implementations thereof.
|
||||||
|
|
||||||
|
2. Waiver. To the greatest extent permitted by, but not in contravention of,
|
||||||
|
applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and
|
||||||
|
unconditionally waives, abandons, and surrenders all of Affirmer's Copyright
|
||||||
|
and Related Rights and associated claims and causes of action, whether now
|
||||||
|
known or unknown (including existing as well as future claims and causes of
|
||||||
|
action), in the Work (i) in all territories worldwide, (ii) for the maximum
|
||||||
|
duration provided by applicable law or treaty (including future time
|
||||||
|
extensions), (iii) in any current or future medium and for any number of
|
||||||
|
copies, and (iv) for any purpose whatsoever, including without limitation
|
||||||
|
commercial, advertising or promotional purposes (the "Waiver"). Affirmer makes
|
||||||
|
the Waiver for the benefit of each member of the public at large and to the
|
||||||
|
detriment of Affirmer's heirs and successors, fully intending that such Waiver
|
||||||
|
shall not be subject to revocation, rescission, cancellation, termination, or
|
||||||
|
any other legal or equitable action to disrupt the quiet enjoyment of the Work
|
||||||
|
by the public as contemplated by Affirmer's express Statement of Purpose.
|
||||||
|
|
||||||
|
3. Public License Fallback. Should any part of the Waiver for any reason be
|
||||||
|
judged legally invalid or ineffective under applicable law, then the Waiver
|
||||||
|
shall be preserved to the maximum extent permitted taking into account
|
||||||
|
Affirmer's express Statement of Purpose. In addition, to the extent the Waiver
|
||||||
|
is so judged Affirmer hereby grants to each affected person a royalty-free,
|
||||||
|
non transferable, non sublicensable, non exclusive, irrevocable and
|
||||||
|
unconditional license to exercise Affirmer's Copyright and Related Rights in
|
||||||
|
the Work (i) in all territories worldwide, (ii) for the maximum duration
|
||||||
|
provided by applicable law or treaty (including future time extensions), (iii)
|
||||||
|
in any current or future medium and for any number of copies, and (iv) for any
|
||||||
|
purpose whatsoever, including without limitation commercial, advertising or
|
||||||
|
promotional purposes (the "License"). The License shall be deemed effective as
|
||||||
|
of the date CC0 was applied by Affirmer to the Work. Should any part of the
|
||||||
|
License for any reason be judged legally invalid or ineffective under
|
||||||
|
applicable law, such partial invalidity or ineffectiveness shall not
|
||||||
|
invalidate the remainder of the License, and in such case Affirmer hereby
|
||||||
|
affirms that he or she will not (i) exercise any of his or her remaining
|
||||||
|
Copyright and Related Rights in the Work or (ii) assert any associated claims
|
||||||
|
and causes of action with respect to the Work, in either case contrary to
|
||||||
|
Affirmer's express Statement of Purpose.
|
||||||
|
|
||||||
|
4. Limitations and Disclaimers.
|
||||||
|
|
||||||
|
a. No trademark or patent rights held by Affirmer are waived, abandoned,
|
||||||
|
surrendered, licensed or otherwise affected by this document.
|
||||||
|
|
||||||
|
b. Affirmer offers the Work as-is and makes no representations or warranties
|
||||||
|
of any kind concerning the Work, express, implied, statutory or otherwise,
|
||||||
|
including without limitation warranties of title, merchantability, fitness
|
||||||
|
for a particular purpose, non infringement, or the absence of latent or
|
||||||
|
other defects, accuracy, or the present or absence of errors, whether or not
|
||||||
|
discoverable, all to the greatest extent permissible under applicable law.
|
||||||
|
|
||||||
|
c. Affirmer disclaims responsibility for clearing rights of other persons
|
||||||
|
that may apply to the Work or any use thereof, including without limitation
|
||||||
|
any person's Copyright and Related Rights in the Work. Further, Affirmer
|
||||||
|
disclaims responsibility for obtaining any necessary consents, permissions
|
||||||
|
or other rights required for any use of the Work.
|
||||||
|
|
||||||
|
d. Affirmer understands and acknowledges that Creative Commons is not a
|
||||||
|
party to this document and has no duty or obligation with respect to this
|
||||||
|
CC0 or use of the Work.
|
||||||
|
|
||||||
|
For more information, please see
|
||||||
|
<http://creativecommons.org/publicdomain/zero/1.0/>
|
|
@ -0,0 +1,16 @@
|
||||||
|
NAME = platformer
|
||||||
|
|
||||||
|
all: $(NAME)
|
||||||
|
|
||||||
|
$(NAME): $(NAME).c
|
||||||
|
$(CC) -O3 -Wall -Wextra -Werror -pedantic -o $@ $< -ldisplay
|
||||||
|
|
||||||
|
run: $(NAME)
|
||||||
|
./$(NAME)
|
||||||
|
|
||||||
|
clean:
|
||||||
|
rm -f $(NAME)
|
||||||
|
|
||||||
|
distclean: clean
|
||||||
|
|
||||||
|
.PHONY: all clean
|
|
@ -0,0 +1,272 @@
|
||||||
|
#include <sys/keycodes.h>
|
||||||
|
|
||||||
|
#include <assert.h>
|
||||||
|
#include <display.h>
|
||||||
|
#include <err.h>
|
||||||
|
#include <errno.h>
|
||||||
|
#include <pixel.h>
|
||||||
|
#include <stdbool.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <time.h>
|
||||||
|
#include <timespec.h>
|
||||||
|
|
||||||
|
#define PLAYFIELD_SIDE 100
|
||||||
|
#define TILE_SIDE 10
|
||||||
|
#define TILES (PLAYFIELD_SIDE / TILE_SIDE)
|
||||||
|
enum palette {
|
||||||
|
BG = 0,
|
||||||
|
TEXT,
|
||||||
|
GRASS_TOP,
|
||||||
|
GRASS_BROWN,
|
||||||
|
ERROR,
|
||||||
|
};
|
||||||
|
static enum palette playfield[PLAYFIELD_SIDE * PLAYFIELD_SIDE];
|
||||||
|
|
||||||
|
static char tilemap[] = " "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
"gg "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
" g "
|
||||||
|
" g g "
|
||||||
|
"gggggggggg";
|
||||||
|
|
||||||
|
static uint32_t main_window = 0;
|
||||||
|
static uint32_t window_width = 600;
|
||||||
|
static uint32_t window_height = 500;
|
||||||
|
|
||||||
|
static bool game_running = true;
|
||||||
|
|
||||||
|
static void on_disconnect(void *context) {
|
||||||
|
(void) context;
|
||||||
|
game_running = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
static bool left_held, right_held, jump_held;
|
||||||
|
|
||||||
|
static void on_keyboard(void *context, uint32_t window, uint32_t codepoint) {
|
||||||
|
(void) context;
|
||||||
|
if (window != main_window)
|
||||||
|
return;
|
||||||
|
int key = KBKEY_DECODE(codepoint);
|
||||||
|
switch (key) {
|
||||||
|
// TODO: rebinding
|
||||||
|
case KBKEY_LEFT: left_held = true; break;
|
||||||
|
case -KBKEY_LEFT: left_held = false; break;
|
||||||
|
case KBKEY_RIGHT: right_held = true; break;
|
||||||
|
case -KBKEY_RIGHT: right_held = false; break;
|
||||||
|
case KBKEY_SPACE: jump_held = true; break;
|
||||||
|
case -KBKEY_SPACE: jump_held = false; break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void on_quit(void *context, uint32_t window) {
|
||||||
|
(void) context;
|
||||||
|
if (window != main_window)
|
||||||
|
return;
|
||||||
|
game_running = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void on_resize(void *context, uint32_t window, uint32_t width, uint32_t height) {
|
||||||
|
(void) context;
|
||||||
|
if (window != main_window)
|
||||||
|
return;
|
||||||
|
window_width = width;
|
||||||
|
window_height = height;
|
||||||
|
}
|
||||||
|
|
||||||
|
static double timespec2double(struct timespec ts) {
|
||||||
|
return ts.tv_sec + ts.tv_nsec / 1000.0 / 1000.0 / 1000.0;
|
||||||
|
}
|
||||||
|
|
||||||
|
char sample_tilemap(double x, double y) {
|
||||||
|
size_t tx = x / TILE_SIDE;
|
||||||
|
size_t ty = y / TILE_SIDE;
|
||||||
|
assert(tx < TILES);
|
||||||
|
assert(ty < TILES);
|
||||||
|
return tilemap[ty * TILES + tx];
|
||||||
|
}
|
||||||
|
|
||||||
|
static double player_x, player_y;
|
||||||
|
static double player_dx, player_dy;
|
||||||
|
static void update(struct timespec now, struct timespec dt_timespec) {
|
||||||
|
(void) now;
|
||||||
|
double dt = timespec2double(dt_timespec);
|
||||||
|
|
||||||
|
player_x += player_dx * dt;
|
||||||
|
player_y += player_dy * dt;
|
||||||
|
|
||||||
|
if (left_held) player_dx = -30;
|
||||||
|
else if (right_held) player_dx = 30;
|
||||||
|
else player_dx = 0;
|
||||||
|
|
||||||
|
// Collision against walls of the map
|
||||||
|
if (player_x < 0) {
|
||||||
|
player_x = 0;
|
||||||
|
player_dx = 0;
|
||||||
|
} else if (player_x > PLAYFIELD_SIDE - TILE_SIDE) {
|
||||||
|
player_x = PLAYFIELD_SIDE - TILE_SIDE;
|
||||||
|
player_dx = 0;
|
||||||
|
}
|
||||||
|
if (player_y < 0) {
|
||||||
|
player_y = 0;
|
||||||
|
player_dy = 0;
|
||||||
|
} else if (player_y > PLAYFIELD_SIDE - TILE_SIDE) {
|
||||||
|
player_y = PLAYFIELD_SIDE - TILE_SIDE;
|
||||||
|
player_dy = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Collision against tiles
|
||||||
|
char topleft = sample_tilemap(player_x, player_y);
|
||||||
|
char topright = sample_tilemap(player_x + TILE_SIDE, player_y);
|
||||||
|
char bottomleft = sample_tilemap(player_x, player_y + TILE_SIDE);
|
||||||
|
char bottomright = sample_tilemap(player_x + TILE_SIDE, player_y + TILE_SIDE);
|
||||||
|
|
||||||
|
bool on_ground = false;
|
||||||
|
if (bottomleft != ' ' || bottomright != ' ')
|
||||||
|
on_ground = true;
|
||||||
|
if (topleft != ' ' || topright != ' ' || bottomleft != ' ' || bottomright != ' ')
|
||||||
|
player_dx = 0;
|
||||||
|
|
||||||
|
if (on_ground)
|
||||||
|
player_dy = 0;
|
||||||
|
else
|
||||||
|
player_dy = 30;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
static void draw_grass_tile(size_t x, size_t y) {
|
||||||
|
assert(x + TILE_SIDE <= PLAYFIELD_SIDE);
|
||||||
|
assert(y + TILE_SIDE <= PLAYFIELD_SIDE);
|
||||||
|
char grass_tile[] = "xxxxxxxxxx"
|
||||||
|
"xx xx x x "
|
||||||
|
" x x x "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
" "
|
||||||
|
" ";
|
||||||
|
assert(strlen(grass_tile) == TILE_SIDE * TILE_SIDE);
|
||||||
|
for (size_t ty = 0; ty < TILE_SIDE; ty++) {
|
||||||
|
for (size_t tx = 0; tx < TILE_SIDE; tx++) {
|
||||||
|
enum palette pixel;
|
||||||
|
switch (grass_tile[ty * TILE_SIDE + tx]) {
|
||||||
|
case 'x': pixel = GRASS_TOP; break;
|
||||||
|
case ' ': pixel = GRASS_BROWN; break;
|
||||||
|
default: pixel = ERROR; break;
|
||||||
|
}
|
||||||
|
playfield[(y + ty) * PLAYFIELD_SIDE + x + tx] = pixel;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void draw_tiles(void) {
|
||||||
|
assert(strlen(tilemap) == TILES * TILES);
|
||||||
|
for (size_t ty = 0; ty < TILES; ty++) {
|
||||||
|
for (size_t tx = 0; tx < TILES; tx++) {
|
||||||
|
switch(tilemap[ty * TILES + tx]) {
|
||||||
|
case 'g': draw_grass_tile(tx * TILE_SIDE, ty * TILE_SIDE); break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void draw(void) {
|
||||||
|
memset(playfield, 0, sizeof(playfield));
|
||||||
|
draw_tiles();
|
||||||
|
draw_grass_tile(player_x, player_y);
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(int argc, char *argv[]) {
|
||||||
|
struct display_connection *connection = display_connect_default();
|
||||||
|
if (!connection && errno == ECONNREFUSED)
|
||||||
|
display_spawn(argc, argv);
|
||||||
|
if (!connection)
|
||||||
|
err(1, "Could not connect to display server");
|
||||||
|
|
||||||
|
display_create_window(connection, main_window);
|
||||||
|
display_resize_window(connection, main_window, window_width, window_height);
|
||||||
|
display_show_window(connection, main_window);
|
||||||
|
|
||||||
|
struct display_event_handlers handlers = {0};
|
||||||
|
handlers.disconnect_handler = on_disconnect;
|
||||||
|
handlers.keyboard_handler = on_keyboard;
|
||||||
|
handlers.quit_handler = on_quit;
|
||||||
|
handlers.resize_handler = on_resize;
|
||||||
|
|
||||||
|
uint32_t palette_colours[] = {
|
||||||
|
[BG] = make_color(128, 128, 255),
|
||||||
|
[TEXT] = make_color(255, 255, 255),
|
||||||
|
[GRASS_TOP] = make_color(0, 255, 0),
|
||||||
|
[GRASS_BROWN] = make_color(200, 128, 0),
|
||||||
|
[ERROR] = make_color(255, 0, 255),
|
||||||
|
};
|
||||||
|
|
||||||
|
long fps_cap = 60;
|
||||||
|
struct timespec min_dt = timespec_make(0, 1000L * 1000L * 1000L / fps_cap);
|
||||||
|
struct timespec last_frame;
|
||||||
|
clock_gettime(CLOCK_MONOTONIC, &last_frame);
|
||||||
|
|
||||||
|
int fps = 0;
|
||||||
|
while (game_running) {
|
||||||
|
struct timespec now;
|
||||||
|
clock_gettime(CLOCK_MONOTONIC, &now);
|
||||||
|
struct timespec dt = timespec_sub(now, last_frame);
|
||||||
|
if (timespec_lt(dt, min_dt)) {
|
||||||
|
struct timespec sleep = timespec_sub(min_dt, dt);
|
||||||
|
nanosleep(&sleep, NULL);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (last_frame.tv_sec != now.tv_sec) {
|
||||||
|
char *title = NULL;
|
||||||
|
asprintf(&title, "%i fps", fps);
|
||||||
|
display_title_window(connection, main_window, title);
|
||||||
|
free(title);
|
||||||
|
fps = 0;
|
||||||
|
} else
|
||||||
|
fps++;
|
||||||
|
|
||||||
|
update(now, dt);
|
||||||
|
draw();
|
||||||
|
|
||||||
|
size_t pixels;
|
||||||
|
if (__builtin_mul_overflow(window_width, window_height, &pixels))
|
||||||
|
errx(1, "Window size too big");
|
||||||
|
uint32_t *framebuffer = calloc(pixels, sizeof(uint32_t));
|
||||||
|
|
||||||
|
uint32_t shorter_side = window_height < window_width ? window_height : window_width;
|
||||||
|
size_t y_offset = (window_height - shorter_side) / 2;
|
||||||
|
size_t x_offset = (window_width - shorter_side) / 2;
|
||||||
|
for (size_t y = 0; y < window_height; y++) {
|
||||||
|
for (size_t x = 0; x < window_width; x++) {
|
||||||
|
if (y < y_offset || x < x_offset ||
|
||||||
|
y >= y_offset + shorter_side || x >= x_offset + shorter_side)
|
||||||
|
framebuffer[y * window_width + x] = make_color_a(0, 0, 0, 200);
|
||||||
|
else {
|
||||||
|
size_t pf_x = (x - x_offset) * PLAYFIELD_SIDE / shorter_side;
|
||||||
|
size_t pf_y = (y - y_offset) * PLAYFIELD_SIDE / shorter_side;
|
||||||
|
uint32_t colour = palette_colours[playfield[pf_y * PLAYFIELD_SIDE + pf_x]];
|
||||||
|
framebuffer[y * window_width + x] = colour;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
display_render_window(connection, main_window, 0, 0, window_width, window_height, framebuffer);
|
||||||
|
free(framebuffer);
|
||||||
|
|
||||||
|
while (!display_poll_event(connection, &handlers));
|
||||||
|
|
||||||
|
last_frame = now;
|
||||||
|
}
|
||||||
|
|
||||||
|
display_disconnect(connection);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
Loading…
Reference in New Issue