69 lines
1.3 KiB
Rust
69 lines
1.3 KiB
Rust
use cgmath::Point3;
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use rapier2d::{
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dynamics::{RigidBody, RigidBodyBuilder, RigidBodyHandle},
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geometry::{ColliderBuilder, ColliderHandle},
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};
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use crate::{
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physics::util,
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render::{Sprite, SpriteTexture},
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};
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pub struct ProjectileBuilder {
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pub rigid_body: RigidBodyBuilder,
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pub collider: ColliderBuilder,
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pub sprite: SpriteTexture,
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pub lifetime: f32,
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pub size: f32,
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pub damage: f32,
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}
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impl ProjectileBuilder {
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pub fn build(self, r: RigidBodyHandle, c: ColliderHandle) -> Projectile {
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Projectile {
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rigid_body: r,
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collider: c,
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sprite: self.sprite,
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lifetime: self.lifetime,
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size: self.size,
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damage: self.damage,
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}
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}
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}
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#[derive(Debug)]
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pub struct Projectile {
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pub rigid_body: RigidBodyHandle,
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pub collider: ColliderHandle,
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pub sprite: SpriteTexture,
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pub lifetime: f32,
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pub size: f32,
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pub damage: f32,
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}
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impl Projectile {
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pub fn tick(&mut self, t: f32) {
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self.lifetime -= t;
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}
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pub fn is_expired(&self) -> bool {
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return self.lifetime < 0.0;
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}
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pub fn get_sprite(&self, r: &RigidBody) -> Sprite {
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let pos = util::rigidbody_position(r);
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let ang = util::rigidbody_angle(r);
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Sprite {
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texture: self.sprite.clone(),
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pos: Point3 {
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x: pos.x,
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y: pos.y,
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z: 1.0,
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},
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size: self.size,
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angle: ang,
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children: None,
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}
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}
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}
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