veloren_common/states/
charged_melee.rs

1use crate::{
2    combat::{self, CombatEffect},
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, Copy, 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    /// Adds an effect onto the main damage of the attack
42    pub damage_effect: Option<CombatEffect>,
43    /// The actual additional combo is modified by duration of charge
44    pub custom_combo: CustomCombo,
45    /// Adjusts move speed during the attack per stage
46    pub movement_modifier: MovementModifier,
47    /// Adjusts turning rate during the attack per stage
48    pub ori_modifier: OrientationModifier,
49}
50
51#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
52pub struct Data {
53    /// Struct containing data that does not change over the course of the
54    /// character state
55    pub static_data: StaticData,
56    /// Checks what section a stage is in
57    pub stage_section: StageSection,
58    /// Timer for each stage
59    pub timer: Duration,
60    /// Whether the attack executed already
61    pub exhausted: bool,
62    /// How much the attack charged by
63    pub charge_amount: f32,
64    /// Adjusts move speed during the attack per stage
65    pub movement_modifier: Option<f32>,
66    /// Adjusts turning rate during the attack per stage
67    pub ori_modifier: Option<f32>,
68}
69
70impl Data {
71    /// How complete the charge is, on a scale of 0.0 to 1.0
72    pub fn charge_frac(&self) -> f32 {
73        if let StageSection::Charge = self.stage_section {
74            (self.timer.as_secs_f32() / self.static_data.charge_duration.as_secs_f32()).min(1.0)
75        } else {
76            0.0
77        }
78    }
79}
80
81impl CharacterBehavior for Data {
82    fn behavior(&self, data: &JoinData, output_events: &mut OutputEvents) -> StateUpdate {
83        let mut update = StateUpdate::from(data);
84
85        handle_orientation(data, &mut update, self.ori_modifier.unwrap_or(1.0), None);
86        handle_move(data, &mut update, self.movement_modifier.unwrap_or(0.7));
87        handle_jump(data, output_events, &mut update, 1.0);
88
89        match self.stage_section {
90            StageSection::Buildup => {
91                if let Some((buildup, strike)) = self.static_data.buildup_strike {
92                    if self.timer < buildup {
93                        if let CharacterState::ChargedMelee(c) = &mut update.character {
94                            c.timer = tick_attack_or_default(data, self.timer, None);
95                        }
96                    } else {
97                        let precision_mult =
98                            combat::compute_precision_mult(data.inventory, data.msm);
99                        let tool_stats = get_tool_stats(data, self.static_data.ability_info);
100                        data.updater
101                            .insert(data.entity, strike.create_melee(precision_mult, tool_stats));
102
103                        if let CharacterState::ChargedMelee(c) = &mut update.character {
104                            c.stage_section = StageSection::Charge;
105                            c.timer = Duration::default();
106                        }
107                    }
108                } else if let CharacterState::ChargedMelee(c) = &mut update.character {
109                    c.stage_section = StageSection::Charge;
110                    c.timer = Duration::default();
111                }
112            },
113            StageSection::Charge => {
114                if input_is_pressed(data, self.static_data.ability_info.input)
115                    && update.energy.current() >= self.static_data.energy_cost
116                    && self.timer < self.static_data.charge_duration
117                {
118                    let charge = (self.timer.as_secs_f32()
119                        / self.static_data.charge_duration.as_secs_f32())
120                    .min(1.0);
121
122                    // Charge the attack
123                    update.character = CharacterState::ChargedMelee(Data {
124                        timer: tick_attack_or_default(data, self.timer, None),
125                        charge_amount: charge,
126                        ..*self
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_cost
135                {
136                    // Maintains charge
137                    update.character = CharacterState::ChargedMelee(Data {
138                        timer: tick_attack_or_default(data, self.timer, None),
139                        ..*self
140                    });
141
142                    // Consumes energy if there's enough left and RMB is held down
143                    update
144                        .energy
145                        .change_by(-self.static_data.energy_drain * data.dt.0 / 5.0);
146                } else {
147                    // Transitions to swing
148                    update.character = CharacterState::ChargedMelee(Data {
149                        stage_section: StageSection::Action,
150                        timer: Duration::default(),
151                        movement_modifier: self.static_data.movement_modifier.swing,
152                        ori_modifier: self.static_data.ori_modifier.swing,
153                        ..*self
154                    });
155                }
156            },
157            StageSection::Action => {
158                if self.timer.as_millis() as f32
159                    > self.static_data.hit_timing
160                        * self.static_data.swing_duration.as_millis() as f32
161                    && !self.exhausted
162                {
163                    // Swing
164                    update.character = CharacterState::ChargedMelee(Data {
165                        timer: tick_attack_or_default(data, self.timer, None),
166                        exhausted: true,
167                        ..*self
168                    });
169
170                    let precision_mult = combat::compute_precision_mult(data.inventory, data.msm);
171                    let tool_stats = get_tool_stats(data, self.static_data.ability_info);
172                    let custom_combo = CustomCombo {
173                        base: self
174                            .static_data
175                            .custom_combo
176                            .base
177                            .map(|b| (self.charge_amount * b as f32).round() as i32),
178                        conditional: self
179                            .static_data
180                            .custom_combo
181                            .conditional
182                            .map(|c| ((self.charge_amount * c.0 as f32).round() as i32, c.1)),
183                    };
184
185                    data.updater.insert(
186                        data.entity,
187                        self.static_data
188                            .melee_constructor
189                            .custom_combo(custom_combo)
190                            .handle_scaling(self.charge_amount)
191                            .create_melee(precision_mult, tool_stats),
192                    );
193
194                    if let Some(FrontendSpecifier::GroundCleave) = self.static_data.specifier {
195                        // Send local event used for frontend shenanigans
196                        output_events.emit_local(LocalEvent::CreateOutcome(Outcome::GroundSlam {
197                            pos: data.pos.0
198                                + *data.ori.look_dir()
199                                    * (data.body.max_radius()
200                                        + self.static_data.melee_constructor.range),
201                        }));
202                    }
203                } else if self.timer < self.static_data.swing_duration {
204                    // Swings
205                    update.character = CharacterState::ChargedMelee(Data {
206                        timer: tick_attack_or_default(data, self.timer, None),
207                        ..*self
208                    });
209                } else {
210                    // Transitions to recover
211                    update.character = CharacterState::ChargedMelee(Data {
212                        stage_section: StageSection::Recover,
213                        timer: Duration::default(),
214                        movement_modifier: self.static_data.movement_modifier.recover,
215                        ori_modifier: self.static_data.ori_modifier.recover,
216                        ..*self
217                    });
218                }
219            },
220            StageSection::Recover => {
221                if self.timer < self.static_data.recover_duration {
222                    // Recovers
223                    update.character = CharacterState::ChargedMelee(Data {
224                        timer: tick_attack_or_default(
225                            data,
226                            self.timer,
227                            Some(data.stats.recovery_speed_modifier),
228                        ),
229                        ..*self
230                    });
231                } else {
232                    // Done
233                    end_melee_ability(data, &mut update);
234                }
235            },
236            _ => {
237                // If it somehow ends up in an incorrect stage section
238                end_melee_ability(data, &mut update);
239            },
240        }
241
242        // At end of state logic so an interrupt isn't overwritten
243        handle_interrupts(data, &mut update, output_events);
244
245        update
246    }
247}
248
249/// Used to specify a particular effect for frontend purposes
250#[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
251pub enum FrontendSpecifier {
252    GroundCleave,
253}
veloren_common/states/charged_melee.rs

veloren_common/states/
charged_melee.rs
