74 lines
3.4 KiB
Plaintext
74 lines
3.4 KiB
Plaintext
// Each boss has its own direction, cannon clock and alternating barrel.
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// No wall-clock time or global tick modulo affects restored behavior.
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fn is_alive(event) {
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for unit in event.entities {
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if unit.entity == event.entity && unit.health > 0 { return true; }
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}
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false
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}
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fn on_spawn(event, state, random) {
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if !state.contains("units") { state.units = #{}; }
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if !state.contains("dead") { state.dead = #{}; }
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let key = event.entity.to_string();
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state.units[key] = #{direction: 1, clock: 0, side: 0};
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state.dead.remove(key);
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// IDs restart on replay. Even a spawn killed during advance must clear
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// its previous life's death guard before the queued death callback runs.
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if !is_alive(event) { return #{commands: [], state: state}; }
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#{commands: [#{op: "velocity", entity: event.entity, vx: 0, vy: 2}], state: state}
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}
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fn on_tick(event, state, random) {
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if event.health <= 0 || !is_alive(event) { return #{commands: [], state: state}; }
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if event.y < 24 {
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return #{commands: [#{op: "velocity", entity: event.entity, vx: 0, vy: 2}], state: state};
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}
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let key = event.entity.to_string();
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if !state.contains("units") { state.units = #{}; }
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let unit = if state.units.contains(key) { state.units[key] } else {#{direction: 1, clock: 0, side: 0}};
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if event.x >= 144 { unit.direction = -1; }
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if event.x <= 80 { unit.direction = 1; }
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unit.clock = (unit.clock + 1) % 54;
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let commands = [
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#{op: "move", entity: event.entity, x: event.x, y: 24},
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#{op: "velocity", entity: event.entity, vx: unit.direction, vy: 0}
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];
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// Audible warning lasts nine simulation steps before each side fires.
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if unit.clock == 45 {
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commands.push(#{op: "play_sound", sound: "iron_coast_boss_3:warning"});
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}
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if unit.clock == 0 {
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let muzzle = if unit.side == 0 {35} else {61};
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let inward = if unit.side == 0 {1} else {-1};
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commands.push(#{op: "projectile", weapon: "iron_coast_boss_3:projectile", x: event.x + muzzle, y: event.y + 54, vx: 0, vy: 4, hostile: true});
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commands.push(#{op: "projectile", weapon: "iron_coast_boss_3:projectile", x: event.x + muzzle, y: event.y + 54, vx: inward, vy: 4, hostile: true});
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commands.push(#{op: "play_sound", sound: "iron_coast_boss_3:shot"});
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unit.side = 1 - unit.side;
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state.shots = if state.contains("shots") {state.shots + 1} else {1};
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}
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state.units[key] = unit;
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#{commands: commands, state: state}
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}
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fn on_hit(event, state, random) {
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state.hits = if state.contains("hits") {state.hits + 1} else {1};
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#{commands: [], state: state}
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}
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fn on_death(event, state, random) {
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let key = event.entity.to_string();
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if !state.contains("dead") { state.dead = #{}; }
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if state.dead.contains(key) { return #{commands: [], state: state}; }
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state.dead[key] = true;
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if state.contains("units") { state.units.remove(key); }
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state.destroyed = if state.contains("destroyed") {state.destroyed + 1} else {1};
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let defeated = if event.objectives.contains("iron_coast_boss_3:defeated") {event.objectives["iron_coast_boss_3:defeated"] + 1} else {1};
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#{commands: [
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#{op: "objective", key: "iron_coast_boss_3:defeated", value: defeated},
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#{op: "effect", x: event.x + 35, y: event.y + 48},
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#{op: "effect", x: event.x + 61, y: event.y + 48},
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#{op: "play_sound", sound: "iron_coast_boss_3:death"}
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], state: state}
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}
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