47 lines
956 B
Odin
47 lines
956 B
Odin
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package main
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import rl "vendor:raylib"
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import "core:slice"
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import "core:math/ease"
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Explosion :: struct{
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position: Vec2,
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radius: f32,
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max_radius: f32,
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time: f32,
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duration: f32,
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to_free: bool,
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}
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explosions_buf : [256]Explosion
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explosions : [dynamic]Explosion
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explosions_init :: proc() {
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explosions = slice.into_dynamic(explosions_buf[:])
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}
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explode :: proc(position: Vec2, max_radius: f32, duration: f32) {
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append(&explosions, Explosion {
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position = position,
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max_radius = max_radius,
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duration = duration
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})
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}
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explosions_process :: proc(delta: f32) {
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#reverse for &e, i in explosions {
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e.time += delta
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e.radius = ease.back_out(e.time / e.duration) * e.max_radius
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if e.time > e.duration {
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unordered_remove(&explosions, i)
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}
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}
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}
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explosions_draw :: proc() {
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#reverse for &e, i in explosions {
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color := rl.ColorAlpha(rl.YELLOW, 1 - ease.exponential_in(e.time / e.duration))
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rl.DrawCircleV(e.position, e.radius, color)
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}
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}
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