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Test without Raylib

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Abdelrahman Said
2025-05-28 22:35:21 +01:00
parent f8b859b4e8
commit 4671e1c177
4 changed files with 66 additions and 165 deletions
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155
dod.c
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@@ -1,14 +1,11 @@
#include "wapp.h"
#include "common.h"
#include "raylib.h"
#include <math.h>
#include <stdint.h>
#include <stdbool.h>
#include <assert.h>
#include <string.h>
#include <pthread.h>
#define THREAD_COUNT 4
#include <time.h>
#define MOVABLE_TAG_SHIFT 0
#define RENDERABLE_TAG_SHIFT 1
@@ -60,20 +57,8 @@ struct Manager {
u64 count;
};
typedef struct PositionThreadArgs PositionThreadArgs;
struct PositionThreadArgs {
const Rect *zones;
Rect *rects;
Velocity *velocities;
u8 *tags;
u64 count;
f32 delta;
};
typedef void *(*PThreadRoutine)(void *);
typedef void (*ScaleInitialiser)(Scale *scale, XOR256State *state);
typedef void (*VelocityInitialiser)(Velocity *velocity, XOR256State *state);
typedef void (*RaylibDrawRectFunc)(int posX, int posY, int width, int height, Color color);
void init_manager(const Allocator *allocator, Manager *manager);
void init_position(Position *position, XOR256State *state);
@@ -82,18 +67,13 @@ void init_scale_zone(Scale *scale, XOR256State *state);
void init_velocity(Velocity *velocity, XOR256State *state);
void zero_velocity(Velocity *velocity, XOR256State *state);
void update_positions(u8 *tags, Rect *rects, Velocity *velocities, u64 count, f32 delta);
void *update_position_thread(PositionThreadArgs *args);
void render_entities(const u8 *tags, const Rect *rects, u64 count);
u8 collides(const Rect *rect, const Rect *collider);
i16 get_random_velocity(XOR256State *state);
void log_data(const Rect *rects, u64 count, FILE *fp, char *line);
int main(void) {
i32 target_fps = 120;
SetTraceLogLevel(LOG_NONE);
InitWindow(WIDTH, HEIGHT, "DOD test");
SetTargetFPS(target_fps);
Allocator arena = wapp_mem_arena_allocator_init(MB(20));
assert(!wapp_mem_allocator_invalid(&arena));
@@ -116,35 +96,24 @@ int main(void) {
velocity_initialisers[is_zone](&(manager.velocities[i]), &state);
}
f32 last_time = GetFrameTime();
f32 delta, cur_time;
while (!WindowShouldClose()) {
f64 time = GetTime();
if (time >= 20.0) {
break;
}
cur_time = GetFrameTime();
delta = cur_time - last_time;
FILE *fp = fopen("dod.out", "w");
assert(fp != NULL);
time_t start = time(NULL);
time_t elapsed = (time_t)-1;
f32 delta = 0.016666666f;
while (elapsed < 20) {
update_positions(manager.tags, manager.rects, manager.velocities, manager.count, delta);
BeginDrawing();
char line[LINE_BUF_LEN] = {0};
ClearBackground(BG_COLOR);
log_data(manager.rects, manager.count, fp, line);
render_entities(manager.tags, manager.rects, manager.count);
DrawFPS(10, 10);
EndDrawing();
elapsed = time(NULL) - start;
}
wapp_mem_arena_allocator_destroy(&arena);
CloseWindow();
return 0;
}
@@ -199,46 +168,6 @@ void zero_velocity(Velocity *velocity, XOR256State *state) {
}
void update_positions(u8 *tags, Rect *rects, Velocity *velocities, u64 count, f32 delta) {
persistent pthread_t threads[THREAD_COUNT] = {0};
persistent PositionThreadArgs args[THREAD_COUNT] = {0};
u64 total_entities_count = count - ZONE_COUNT;
u64 thread_entities_count = (u64)(ceil((f64)total_entities_count / THREAD_COUNT));
i32 result;
u64 start = ZONE_COUNT;
u64 end, args_count;
for (u64 i = 0; i < THREAD_COUNT; ++i) {
if (total_entities_count > thread_entities_count) {
end = start + thread_entities_count;
total_entities_count -= thread_entities_count;
} else {
end = start + total_entities_count;
total_entities_count = 0;
}
args_count = end - start;
args[i].zones = &(rects[0]);
args[i].tags = &(tags[start]);
args[i].rects = &(rects[start]);
args[i].velocities = &(velocities[start]);
args[i].count = args_count;
args[i].delta = delta;
start += args_count;
result = pthread_create(&(threads[i]), NULL, (PThreadRoutine)update_position_thread, (void *)&(args[i]));
assert(result == 0);
}
for (u64 i = 0; i < THREAD_COUNT; ++i) {
pthread_join(threads[i], NULL);
}
}
void *update_position_thread(PositionThreadArgs *args) {
persistent f32 multipliers[2] = {1.0f, 0.5f};
persistent u64 inside_zone_mask = 0x7;
@@ -246,52 +175,32 @@ void *update_position_thread(PositionThreadArgs *args) {
f32 pos_x, pos_y;
f32 max_x, max_y;
for (u64 i = 0; i < args->count; ++i) {
args->tags[i] &= inside_zone_mask;
for (u64 i = ZONE_COUNT; i < count; ++i) {
tags[i] &= inside_zone_mask;
for (u64 j = 0; j < ZONE_COUNT; ++j) {
args->tags[i] |= collides(&args->rects[i], &args->zones[j]) << INSIDE_ZONE_TAG_SHIFT;
tags[i] |= collides(&rects[i], &rects[j]) << INSIDE_ZONE_TAG_SHIFT;
}
index = (args->tags[i] & ENTITY_TAG_INSIDE_ZONE) >> INSIDE_ZONE_TAG_SHIFT;
index = (tags[i] & ENTITY_TAG_INSIDE_ZONE) >> INSIDE_ZONE_TAG_SHIFT;
max_x = WIDTH - args->rects[i].scale.width;
max_y = HEIGHT - args->rects[i].scale.height;
max_x = WIDTH - rects[i].scale.width;
max_y = HEIGHT - rects[i].scale.height;
pos_x = args->rects[i].position.x + args->velocities[i].x * multipliers[index] * args->delta;
pos_y = args->rects[i].position.y + args->velocities[i].y * multipliers[index] * args->delta;
pos_x = rects[i].position.x + velocities[i].x * multipliers[index] * delta;
pos_y = rects[i].position.y + velocities[i].y * multipliers[index] * delta;
if (pos_x < 0 || pos_x >= max_x) {
pos_x = min(max(pos_x, 0), max_x);
args->velocities[i].x *= -1;
velocities[i].x *= -1;
}
if (pos_y < 0 || pos_y >= max_y) {
pos_y = min(max(pos_y, 0), max_y);
args->velocities[i].y *= -1;
velocities[i].y *= -1;
}
args->rects[i].position.x = roundf(pos_x);
args->rects[i].position.y = roundf(pos_y);
}
return args;
}
void render_entities(const u8 *tags, const Rect *rects, u64 count) {
persistent RaylibDrawRectFunc renderers[2] = {DrawRectangle, DrawRectangleLines};
persistent Color colors[2] = {FG_COLOR, ZONE_COLOR};
for (u64 i = 0; i < count; ++i) {
u8 func_index = (tags[i] & ENTITY_TAG_COLLIDER) >> COLLIDER_TAG_SHIFT;
u8 color_index = func_index | ((tags[i] & ENTITY_TAG_INSIDE_ZONE) >> INSIDE_ZONE_TAG_SHIFT);
renderers[func_index](
rects[i].position.x,
rects[i].position.y,
rects[i].scale.width,
rects[i].scale.height,
colors[color_index]
);
rects[i].position.x = roundf(pos_x);
rects[i].position.y = roundf(pos_y);
}
}
@@ -313,3 +222,19 @@ u8 collides(const Rect *rect, const Rect *collider) {
i16 get_random_velocity(XOR256State *state) {
return (wapp_prng_xorshift_256(state) % (MAX_ABS_VELOCITY + 1 - MIN_ABS_VELOCITY)) + MIN_ABS_VELOCITY;
}
void log_data(const Rect *rects, u64 count, FILE *fp, char *line) {
for (u64 i = 0; i < count; ++i) {
snprintf(
line, LINE_BUF_LEN,
"x: %d, y: %d, width: %d, height: %d\n",
rects[i].position.x,
rects[i].position.y,
rects[i].scale.width,
rects[i].scale.height
);
u64 size = strlen(line);
fwrite(line, sizeof(char), size, fp);
memset(line, 0, size);
}
}