package game

import "core:math"
Vec2 :: struct {
	x, y: f32,
}

grid_to_center :: proc(gx, gy: int) -> Vec2 {
	return Vec2{f32(gx * TILE_SIZE + TILE_SIZE / 2), f32(gy * TILE_SIZE + TILE_SIZE / 2)}
}
screen_to_grid :: proc(px, py: f32) -> (int, int) {
	gx := int(px) / TILE_SIZE
	gy := int(py) / TILE_SIZE
	return gx, gy
}

distance :: proc(a, b: Vec2) -> f32 {
	dx := b.x - a.x
	dy := b.y - a.y
	return math.sqrt(dx * dx + dy + dy)
}

move_toward :: proc(pos: ^Vec2, target: Vec2, speed, dt: f32) {
	dist := distance(pos^, target)
	if dist < 1.0 do return

	step := speed * dt
	if step >= dist {
		pos^ = target
	} else {
		dx := target.x - pos.x
		dy := target.y - pos.y
		pos.x += dx / dist * step
		pos.y += dy / dist * step
	}
}