211 lines
6.6 KiB
C
211 lines
6.6 KiB
C
#define _POSIX_C_SOURCE 199309L
|
|
#define _XOPEN_SOURCE 500
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <string.h>
|
|
#include <strings.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <wayland-server.h>
|
|
#include <wayland-server-protocol.h>
|
|
#include <xkbcommon/xkbcommon.h>
|
|
#include <GLES2/gl2.h>
|
|
#include <wlr/render/matrix.h>
|
|
#include <wlr/render/gles2.h>
|
|
#include <wlr/render.h>
|
|
#include <wlr/util/log.h>
|
|
#include <wlr/backend.h>
|
|
#include <wlr/backend/session.h>
|
|
#include <wlr/types/wlr_output_layout.h>
|
|
#include <wlr/types/wlr_output.h>
|
|
#include <wlr/types/wlr_keyboard.h>
|
|
#include <math.h>
|
|
#include "shared.h"
|
|
#include "cat.h"
|
|
|
|
struct sample_state {
|
|
struct example_config *config;
|
|
struct wlr_renderer *renderer;
|
|
struct wlr_texture *cat_texture;
|
|
struct wlr_output_layout *layout;
|
|
float x_offs, y_offs;
|
|
float x_vel, y_vel;
|
|
struct wlr_output *main_output;
|
|
struct wl_list outputs;
|
|
};
|
|
|
|
static void handle_output_frame(struct output_state *output, struct timespec *ts) {
|
|
struct compositor_state *state = output->compositor;
|
|
struct sample_state *sample = state->data;
|
|
struct wlr_output *wlr_output = output->output;
|
|
|
|
wlr_output_make_current(wlr_output);
|
|
wlr_renderer_begin(sample->renderer, wlr_output);
|
|
|
|
if (wlr_output_layout_intersects(sample->layout, output->output,
|
|
sample->x_offs, sample->y_offs,
|
|
sample->x_offs + 128, sample->y_offs + 128)) {
|
|
float matrix[16];
|
|
|
|
// transform global coordinates to local coordinates
|
|
double local_x = sample->x_offs;
|
|
double local_y = sample->y_offs;
|
|
wlr_output_layout_output_coords(sample->layout, output->output, &local_x,
|
|
&local_y);
|
|
|
|
wlr_texture_get_matrix(sample->cat_texture, &matrix,
|
|
&wlr_output->transform_matrix, local_x, local_y);
|
|
wlr_render_with_matrix(sample->renderer,
|
|
sample->cat_texture, &matrix);
|
|
}
|
|
|
|
wlr_renderer_end(sample->renderer);
|
|
wlr_output_swap_buffers(wlr_output);
|
|
|
|
if (output->output == sample->main_output) {
|
|
long ms = (ts->tv_sec - output->last_frame.tv_sec) * 1000 +
|
|
(ts->tv_nsec - output->last_frame.tv_nsec) / 1000000;
|
|
// how many seconds have passed since the last frame
|
|
float seconds = ms / 1000.0f;
|
|
|
|
if (seconds > 0.1f) {
|
|
// XXX when we switch vt, the rendering loop stops so try to detect
|
|
// that and pause when it happens.
|
|
seconds = 0.0f;
|
|
}
|
|
|
|
// check for collisions and bounce
|
|
bool ur_collision = !wlr_output_layout_output_at(sample->layout,
|
|
sample->x_offs + 128, sample->y_offs);
|
|
bool ul_collision = !wlr_output_layout_output_at(sample->layout,
|
|
sample->x_offs, sample->y_offs);
|
|
bool ll_collision = !wlr_output_layout_output_at(sample->layout,
|
|
sample->x_offs, sample->y_offs + 128);
|
|
bool lr_collision = !wlr_output_layout_output_at(sample->layout,
|
|
sample->x_offs + 128, sample->y_offs + 128);
|
|
|
|
if (ur_collision && ul_collision && ll_collision && lr_collision) {
|
|
// oops we went off the screen somehow
|
|
struct wlr_output_layout_output *main_l_output;
|
|
main_l_output = wlr_output_layout_get(sample->layout, sample->main_output);
|
|
sample->x_offs = main_l_output->x + 20;
|
|
sample->y_offs = main_l_output->y + 20;
|
|
} else if (ur_collision && ul_collision) {
|
|
sample->y_vel = fabs(sample->y_vel);
|
|
} else if (lr_collision && ll_collision) {
|
|
sample->y_vel = -fabs(sample->y_vel);
|
|
} else if (ll_collision && ul_collision) {
|
|
sample->x_vel = fabs(sample->x_vel);
|
|
} else if (ur_collision && lr_collision) {
|
|
sample->x_vel = -fabs(sample->x_vel);
|
|
} else {
|
|
if (ur_collision || lr_collision) {
|
|
sample->x_vel = -fabs(sample->x_vel);
|
|
}
|
|
if (ul_collision || ll_collision) {
|
|
sample->x_vel = fabs(sample->x_vel);
|
|
}
|
|
if (ul_collision || ur_collision) {
|
|
sample->y_vel = fabs(sample->y_vel);
|
|
}
|
|
if (ll_collision || lr_collision) {
|
|
sample->y_vel = -fabs(sample->y_vel);
|
|
}
|
|
}
|
|
|
|
sample->x_offs += sample->x_vel * seconds;
|
|
sample->y_offs += sample->y_vel * seconds;
|
|
}
|
|
}
|
|
|
|
static void set_main_output(struct sample_state *sample,
|
|
struct wlr_output *output) {
|
|
sample->main_output = output;
|
|
struct wlr_output_layout_output *l_output;
|
|
l_output = wlr_output_layout_get(sample->layout, output);
|
|
sample->x_offs = l_output->x + 200;
|
|
sample->y_offs = l_output->y + 200;
|
|
}
|
|
|
|
static void handle_output_resolution(struct compositor_state *state, struct output_state *output) {
|
|
struct sample_state *sample = state->data;
|
|
wlr_output_layout_destroy(sample->layout);
|
|
sample->layout = configure_layout(sample->config, &sample->outputs);
|
|
set_main_output(sample, output->output);
|
|
|
|
}
|
|
|
|
static void handle_output_add(struct output_state *output) {
|
|
struct sample_state *sample = output->compositor->data;
|
|
wl_list_insert(&sample->outputs, &output->link);
|
|
wlr_output_layout_destroy(sample->layout);
|
|
sample->layout = configure_layout(sample->config, &sample->outputs);
|
|
set_main_output(sample, output->output);
|
|
}
|
|
|
|
static void update_velocities(struct compositor_state *state,
|
|
float x_diff, float y_diff) {
|
|
struct sample_state *sample = state->data;
|
|
sample->x_vel += x_diff;
|
|
sample->y_vel += y_diff;
|
|
}
|
|
|
|
static void handle_keyboard_key(struct keyboard_state *kbstate, uint32_t keycode,
|
|
xkb_keysym_t sym, enum wlr_key_state key_state) {
|
|
// NOTE: It may be better to simply refer to our key state during each frame
|
|
// and make this change in pixels/sec^2
|
|
// Also, key repeat
|
|
int delta = 75;
|
|
if (key_state == WLR_KEY_PRESSED) {
|
|
switch (sym) {
|
|
case XKB_KEY_Left:
|
|
update_velocities(kbstate->compositor, -delta, 0);
|
|
break;
|
|
case XKB_KEY_Right:
|
|
update_velocities(kbstate->compositor, delta, 0);
|
|
break;
|
|
case XKB_KEY_Up:
|
|
update_velocities(kbstate->compositor, 0, -delta);
|
|
break;
|
|
case XKB_KEY_Down:
|
|
update_velocities(kbstate->compositor, 0, delta);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
struct sample_state state = {0};
|
|
|
|
state.x_vel = 500;
|
|
state.y_vel = 500;
|
|
state.layout = wlr_output_layout_init();
|
|
|
|
wl_list_init(&state.outputs);
|
|
state.config = parse_args(argc, argv);
|
|
|
|
struct compositor_state compositor = { 0 };
|
|
compositor.data = &state;
|
|
compositor.output_add_cb = handle_output_add;
|
|
compositor.output_frame_cb = handle_output_frame;
|
|
compositor.output_resolution_cb = handle_output_resolution;
|
|
compositor.keyboard_key_cb = handle_keyboard_key;
|
|
compositor_init(&compositor);
|
|
|
|
state.renderer = wlr_gles2_renderer_create(compositor.backend);
|
|
state.cat_texture = wlr_render_texture_create(state.renderer);
|
|
wlr_texture_upload_pixels(state.cat_texture, WL_SHM_FORMAT_ABGR8888,
|
|
cat_tex.width, cat_tex.width, cat_tex.height, cat_tex.pixel_data);
|
|
|
|
wl_display_run(compositor.display);
|
|
|
|
wlr_texture_destroy(state.cat_texture);
|
|
wlr_renderer_destroy(state.renderer);
|
|
compositor_fini(&compositor);
|
|
|
|
wlr_output_layout_destroy(state.layout);
|
|
|
|
example_config_destroy(state.config);
|
|
}
|