79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
#include "include/raylib.h"
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#include "include/raymath.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include "lib.h"
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#define SCREEN_WIDTH 1300
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#define SCREEN_HEIGHT 1000
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#define TARGET_FPS 60
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#define NUM_BOIDS 16
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const float max_speed = 200.0f;
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const float max_force = 0.1;
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typedef struct Boid {
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Point position;
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Vector2 acceleration;
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Vector2 velocity;
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} Boid;
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int main(void) {
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InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "Boids");
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SetTargetFPS(TARGET_FPS);
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Boid *boids = calloc(NUM_BOIDS, sizeof(Boid));
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for (int i = 0; i < NUM_BOIDS; i++) {
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Boid *boid = &boids[i];
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int rand_x = GetRandomValue(0, SCREEN_WIDTH);
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int rand_y = GetRandomValue(0, SCREEN_HEIGHT);
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boid->position = (Vector2){rand_x, rand_y};
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int rand_vx = GetRandomValue(0, 100);
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int rand_vy = GetRandomValue(0, 100);
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boid->velocity = (Vector2){rand_vx * 0.01f, rand_vy * 0.01f};
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int rand_ax = GetRandomValue(0, 100);
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int rand_ay = GetRandomValue(0, 100);
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boid->velocity = (Vector2){rand_ax * 0.01f - 0.5f, rand_ay * 0.01f - 0.5f};
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}
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PointOption target_pos = {0};
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while (!WindowShouldClose()) {
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float dt = GetFrameTime();
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// Update
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if (IsMouseButtonPressed(0)) {
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Vector2 mouse_pos = GetMousePosition();
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target_pos = (PointOption){.tag = SOME, .some.point = mouse_pos};
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}
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for (int i = 0; i < NUM_BOIDS; i++) {
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Boid *boid = &boids[i];
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boid->velocity = Vector2Add(boid->velocity, boid->acceleration);
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boid->velocity = Vector2ClampValue(boid->velocity, 0.0f, max_speed);
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boid->position = Vector2Add(boid->position, boid->velocity);
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}
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BeginDrawing();
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{
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ClearBackground(RAYWHITE);
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// You can draw a triangle but you'd need to rotate all 3 vectors, and I don't
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// want to get distracted with that
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// DrawTriangle(Vector2 v1, Vector2 v2, Vector2 v3, GREEN);
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// DrawTriangleLines(Vector2 v1, Vector2 v2, Vector2 v3, GREEN);
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for (int i = 0; i < NUM_BOIDS; i++) {
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Boid *boid = &boids[i];
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DrawCircle(boid->position.x, boid->position.y, 35, BLACK);
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DrawCircle(boid->position.x, boid->position.y, 25, GREEN);
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}
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}
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EndDrawing();
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}
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free(boids);
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CloseWindow();
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}
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