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package demonchime
import "core:math"
import "core:math/linalg"
import "core:math/rand"
import "phys"
import "fw"
hugbug_stats := Enemy_Stats {
max_health = 10,
}
Hugbug :: struct {
using enemy: Enemy,
saw_player: bool,
spawn_position: Vec2,
target_position: Vec2,
patrol_timer: f32,
}
make_hugbug :: proc(pos: Vec2) -> (int, ^Hugbug) {
sprite: Sprite
init_sprite(&sprite, .Hugbug)
sprite.offset = {
f32(sprite.width / 2),
f32(sprite.height / 2),
}
body := phys.make_body(
phys.Rect{{-4, -4}, {10, 10}},
layers = {.Enemy},
mask = {.Player, .Hard},
)
phys.set_position(body, pos)
hugbug := make_enemy(
Hugbug,
&hugbug_stats,
sprite,
body
)
hugbug.ai = .Hugbug
hugbug.spawn_position = pos
hugbug.target_position = pos
return hugbug.handle, hugbug
}
update_hugbug :: proc(e: ^Enemy, dt: f32) {
hb, is_hugbug := e.variant.(^Hugbug)
if !is_hugbug {
return
}
pos := phys.get_position(hb.body)
player_pos := phys.get_position(player.body)
pursuing := false
speed: f32 = HUGBUG_PATROL_SPEED
distance := linalg.length2(player_pos - pos)
if distance < HUGBUG_PURSUE_RANGE*HUGBUG_PURSUE_RANGE {
hb.target_position = player_pos
hb.patrol_timer = HUGBUG_PATROL_TIMEOUT_MAX
speed = HUGBUG_PURSUE_SPEED
pursuing = true
} else {
hb.patrol_timer -= dt
if hb.patrol_timer < 0 {
hb.patrol_timer = rand.float32_range(
HUGBUG_PATROL_TIMEOUT_MIN,
HUGBUG_PATROL_TIMEOUT_MAX,
)
stay_idle := coin_flip()
if stay_idle {
hb.target_position = pos
} else {
hb.target_position = hb.spawn_position + Vec2{
rand.float32_range(-HUGBUG_PATROL_RANGE, HUGBUG_PATROL_RANGE),
rand.float32_range(-HUGBUG_PATROL_RANGE, HUGBUG_PATROL_RANGE),
}
}
}
}
accelerate_to_point(hb.body, hb.target_position, speed, HUGBUG_ACCEL)
contact_damage(hb.body, HUGBUG_DAMAGE)
hb.sprite.anim_speed = 1
if f32(fw.get_time()) - hb.hit_timestamp < 0.1 {
set_sprite_active_tag(&hb.sprite, "hurt")
} else {
set_sprite_active_tag(&hb.sprite, "fly")
if pursuing {
hb.sprite.anim_speed = 2
}
}
vel := phys.get_velocity(hb.body)
hb.sprite.scale.x = -1 if vel.x < 0 else 1
if math.abs(vel.x) < 5 {
hb.sprite.scale.x = 1
}
}
object_spawner_hugbug :: proc(obj: Object_Resource) {
make_hugbug(obj.pos)
}
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