68 lines
1.4 KiB
Odin
68 lines
1.4 KiB
Odin
package game
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Projectile :: struct {
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active: bool,
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position: Vec2,
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target_slot: int,
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damage: int,
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speed: f32,
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}
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acquire_projectile :: proc(world: ^World) -> ^Projectile {
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for i in 0 ..< MAX_PROJECTILES {
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if !world.projectiles[i].active {
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return &world.projectiles[i]
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}
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}
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return nil
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}
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enemy_still_on_map :: proc(world: ^World, slot: int) -> (^Enemy, bool) {
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if slot < 0 || slot >= MAX_ENEMIES do return nil, false
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e := &world.enemies[slot]
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if !e.active do return nil, false
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if len(world.path) == 0 do return nil, false
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if e.path_index >= len(world.path) do return nil, false
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return e, true
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}
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spawn_projectile :: proc(world: ^World, from: Vec2, target_slot: int, damage: int) {
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p := acquire_projectile(world)
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if p == nil do return
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p^ = Projectile {
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active = true,
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position = from,
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target_slot = target_slot,
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damage = damage,
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speed = PROJECTILE_SPEED,
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}
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}
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update_projectiles :: proc(world: ^World, dt: f32) {
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for i in 0 ..< MAX_PROJECTILES {
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p := &world.projectiles[i]
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if !p.active do continue
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target, ok := enemy_still_on_map(world, p.target_slot)
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if !ok {
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p.active = false
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continue
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}
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move_toward(&p.position, target.position, p.speed, dt)
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if distance(p.position, target.position) <= PROJECTILE_HIT_RADIUS {
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target.health -= p.damage
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p.active = false
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if target.health <= 0 {
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target.active = false
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push_event(world, .Enemy_Killed, gold_reward = 5)
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}
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}
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}
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}
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