86 lines
2.3 KiB
Odin
86 lines
2.3 KiB
Odin
package main
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import rl "vendor:raylib"
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import "core:fmt"
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import "core:math/rand"
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import "core:slice"
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import "core:math"
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bullets : [dynamic]Bullet
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Bullet :: struct{
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pos: vec3,
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vel: vec3,
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radius: f32,
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alive: bool,
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}
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bullet_spawn :: proc(pos: vec3, dir: f32) -> Bullet {
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return Bullet {
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pos = pos,
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vel = get_vec_from_angle(dir) * 70,
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alive = true,
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radius = 0.7
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}
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}
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bullet_process :: proc(bullet: ^Bullet, game: ^Game, delta: f32) {
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bullet.vel = rl.Vector3MoveTowards(bullet.vel, {}, 60 * delta)
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bullet.pos += bullet.vel * delta
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if rl.Vector3LengthSqr(bullet.vel) < 0.2 {
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bullet.alive = false
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}
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if rl.CheckCollisionCircles(bullet.pos.xy, bullet.radius, Head.pos.xy, Head.radius) {
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bullet.alive = false
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if game.snake_health == 0 {
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diff := bullet.pos - Head.pos
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diff_ang := math.atan2(-diff.y, diff.x)
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angle := angle_cycle(Head.dir - diff_ang, -math.PI, math.PI)
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if abs(angle) > math.PI / 3 {
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rl.PlaySound(Res.Sfx.LightningHit)
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explode(bullet.pos, 1, 0.6, rl.YELLOW)
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Head.health -= 1
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}
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}
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return
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}
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for &segment in Segments {
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if rl.CheckCollisionCircles(bullet.pos.xy, bullet.radius, segment.pos.xy, segment.collider_radius) {
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bullet.alive = false
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rl.PlaySound(Res.Sfx.LightningHit)
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if segment.health > 0 {
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segment.health -= 1
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explode(bullet.pos, 1, 0.6, rl.YELLOW)
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if segment.health == 0 {
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segment.collider_radius = 1.5
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explode(segment.pos, 3, 0.7, rl.RED)
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rl.PlaySound(Res.Sfx.SnakeSegmentExplode)
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}
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}
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}
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}
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}
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bullet_draw :: proc(bullet: ^Bullet, game: ^Game) {
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rl.DrawSphere(bullet.pos, 0.5, rl.YELLOW)
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line_count := 0
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bdraw := slice.clone_to_dynamic(game.bullets[:])
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rand.shuffle(bdraw[:])
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for &bul in bdraw {
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if &bul == bullet {
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continue
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}
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if line_count > 0 {
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break
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}
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if rl.Vector3LengthSqr(bul.pos - bullet.pos) > 70 {
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continue
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}
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line_count += 1
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rl.DrawLine3D(bullet.pos, bul.pos, rl.YELLOW)
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}
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} |