veloren_common/states/
charged_melee.rs

1use crate::{
2    combat,
3    comp::{
4        CharacterState, MeleeConstructor, StateUpdate, character_state::OutputEvents,
5        melee::CustomCombo,
6    },
7    event::LocalEvent,
8    outcome::Outcome,
9    states::{
10        behavior::{CharacterBehavior, JoinData},
11        utils::{StageSection, *},
12    },
13};
14use serde::{Deserialize, Serialize};
15use std::time::Duration;
16
17#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
18/// Separated out to condense update portions of character state
19pub struct StaticData {
20    /// How much energy is drained per second when charging
21    pub energy_drain: f32,
22    /// Energy cost per attack
23    pub energy_cost: f32,
24    /// The state can optionally have a buildup strike that applies after
25    /// buildup before charging
26    pub buildup_strike: Option<(Duration, MeleeConstructor)>,
27    /// How long it takes to charge the weapon to max damage and knockback
28    pub charge_duration: Duration,
29    /// How long the weapon is swinging for
30    pub swing_duration: Duration,
31    /// At what fraction of the swing duration to apply the melee "hit"
32    pub hit_timing: f32,
33    /// How long the state has until exiting
34    pub recover_duration: Duration,
35    /// Used to construct the Melee attack
36    pub melee_constructor: MeleeConstructor,
37    /// What key is used to press ability
38    pub ability_info: AbilityInfo,
39    /// Used to specify the melee attack to the frontend
40    pub specifier: Option<FrontendSpecifier>,
41    /// The actual additional combo is modified by duration of charge
42    pub custom_combo: CustomCombo,
43    /// Adjusts move speed during the attack per stage
44    pub movement_modifier: MovementModifier,
45    /// Adjusts turning rate during the attack per stage
46    pub ori_modifier: OrientationModifier,
47}
48
49#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
50pub struct Data {
51    /// Struct containing data that does not change over the course of the
52    /// character state
53    pub static_data: StaticData,
54    /// Checks what section a stage is in
55    pub stage_section: StageSection,
56    /// Timer for each stage
57    pub timer: Duration,
58    /// Whether the attack executed already
59    pub exhausted: bool,
60    /// How much the attack charged by
61    pub charge_amount: f32,
62    /// Adjusts move speed during the attack per stage
63    pub movement_modifier: Option<f32>,
64    /// Adjusts turning rate during the attack per stage
65    pub ori_modifier: Option<f32>,
66}
67
68impl Data {
69    /// How complete the charge is, on a scale of 0.0 to 1.0
70    pub fn charge_frac(&self) -> f32 {
71        if let StageSection::Charge = self.stage_section {
72            (self.timer.as_secs_f32() / self.static_data.charge_duration.as_secs_f32()).min(1.0)
73        } else {
74            0.0
75        }
76    }
77}
78
79impl CharacterBehavior for Data {
80    fn behavior(&self, data: &JoinData, output_events: &mut OutputEvents) -> StateUpdate {
81        let mut update = StateUpdate::from(data);
82
83        handle_orientation(data, &mut update, self.ori_modifier.unwrap_or(1.0), None);
84        handle_move(data, &mut update, self.movement_modifier.unwrap_or(0.7));
85        handle_jump(data, output_events, &mut update, 1.0);
86
87        match self.stage_section {
88            StageSection::Buildup => {
89                if let Some((buildup, strike)) = &self.static_data.buildup_strike {
90                    if self.timer < *buildup {
91                        if let CharacterState::ChargedMelee(c) = &mut update.character {
92                            c.timer = tick_attack_or_default(data, self.timer, None);
93                        }
94                    } else {
95                        let precision_mult =
96                            combat::compute_precision_mult(data.inventory, data.msm);
97                        data.updater.insert(
98                            data.entity,
99                            strike
100                                .clone()
101                                .create_melee(precision_mult, self.static_data.ability_info),
102                        );
103
104                        if let CharacterState::ChargedMelee(c) = &mut update.character {
105                            c.stage_section = StageSection::Charge;
106                            c.timer = Duration::default();
107                        }
108                    }
109                } else if let CharacterState::ChargedMelee(c) = &mut update.character {
110                    c.stage_section = StageSection::Charge;
111                    c.timer = Duration::default();
112                }
113            },
114            StageSection::Charge => {
115                if input_is_pressed(data, self.static_data.ability_info.input)
116                    && (update.energy.current() >= self.static_data.energy_drain * data.dt.0)
117                    && self.timer < self.static_data.charge_duration
118                {
119                    let charge = (self.timer.as_secs_f32()
120                        / self.static_data.charge_duration.as_secs_f32())
121                    .min(1.0);
122
123                    // Charge the attack
124                    if let CharacterState::ChargedMelee(c) = &mut update.character {
125                        c.timer = tick_attack_or_default(data, self.timer, None);
126                        c.charge_amount = charge;
127                    }
128
129                    // Consumes energy if there's enough left and RMB is held down
130                    update
131                        .energy
132                        .change_by(-self.static_data.energy_drain * data.dt.0);
133                } else if input_is_pressed(data, self.static_data.ability_info.input)
134                    && (update.energy.current() >= self.static_data.energy_drain * data.dt.0)
135                {
136                    // Maintains charge
137                    if let CharacterState::ChargedMelee(c) = &mut update.character {
138                        c.timer = tick_attack_or_default(data, self.timer, None);
139                    }
140
141                    // Consumes energy if there's enough left and RMB is held down
142                    update
143                        .energy
144                        .change_by(-self.static_data.energy_drain * data.dt.0 / 5.0);
145                } else {
146                    // Transitions to swing
147                    if let CharacterState::ChargedMelee(c) = &mut update.character {
148                        c.stage_section = StageSection::Action;
149                        c.timer = Duration::default();
150                        c.movement_modifier = self.static_data.movement_modifier.action;
151                        c.ori_modifier = self.static_data.ori_modifier.action;
152                    }
153                }
154            },
155            StageSection::Action => {
156                if self.timer.as_millis() as f32
157                    > self.static_data.hit_timing
158                        * self.static_data.swing_duration.as_millis() as f32
159                    && !self.exhausted
160                {
161                    // Swing
162                    if let CharacterState::ChargedMelee(c) = &mut update.character {
163                        c.timer = tick_attack_or_default(data, self.timer, None);
164                        c.exhausted = true;
165                    }
166
167                    let precision_mult = combat::compute_precision_mult(data.inventory, data.msm);
168                    let custom_combo = CustomCombo {
169                        base: self
170                            .static_data
171                            .custom_combo
172                            .base
173                            .map(|b| (self.charge_amount * b as f32).round() as i32),
174                        conditional: self
175                            .static_data
176                            .custom_combo
177                            .conditional
178                            .map(|c| ((self.charge_amount * c.0 as f32).round() as i32, c.1)),
179                    };
180
181                    data.updater.insert(
182                        data.entity,
183                        self.static_data
184                            .melee_constructor
185                            .clone()
186                            .custom_combo(custom_combo)
187                            .handle_scaling(self.charge_amount)
188                            .create_melee(precision_mult, self.static_data.ability_info),
189                    );
190
191                    if let Some(FrontendSpecifier::GroundCleave) = self.static_data.specifier {
192                        // Send local event used for frontend shenanigans
193                        output_events.emit_local(LocalEvent::CreateOutcome(Outcome::GroundSlam {
194                            pos: data.pos.0
195                                + *data.ori.look_dir()
196                                    * (data.body.max_radius()
197                                        + self.static_data.melee_constructor.range),
198                        }));
199                    }
200                } else if self.timer < self.static_data.swing_duration {
201                    // Swings
202                    if let CharacterState::ChargedMelee(c) = &mut update.character {
203                        c.timer = tick_attack_or_default(data, self.timer, None);
204                    }
205                } else {
206                    // Transitions to recover
207                    if let CharacterState::ChargedMelee(c) = &mut update.character {
208                        c.stage_section = StageSection::Recover;
209                        c.timer = Duration::default();
210                        c.movement_modifier = self.static_data.movement_modifier.recover;
211                        c.ori_modifier = self.static_data.ori_modifier.recover;
212                    }
213                }
214            },
215            StageSection::Recover => {
216                if self.timer < self.static_data.recover_duration {
217                    // Recovers
218                    if let CharacterState::ChargedMelee(c) = &mut update.character {
219                        c.timer = tick_attack_or_default(data, self.timer, None);
220                    }
221                } else {
222                    // Done
223                    end_melee_ability(data, &mut update);
224                }
225            },
226            _ => {
227                // If it somehow ends up in an incorrect stage section
228                end_melee_ability(data, &mut update);
229            },
230        }
231
232        // At end of state logic so an interrupt isn't overwritten
233        handle_interrupts(data, &mut update, output_events);
234
235        update
236    }
237}
238
239/// Used to specify a particular effect for frontend purposes
240#[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
241pub enum FrontendSpecifier {
242    GroundCleave,
243}
veloren_common/states/charged_melee.rs

veloren_common/states/
charged_melee.rs
