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                        let tool_stats = get_tool_stats(data, self.static_data.ability_info);
98                        data.updater.insert(
99                            data.entity,
100                            strike.clone().create_melee(
101                                precision_mult,
102                                tool_stats,
103                                self.static_data.ability_info,
104                            ),
105                        );
106
107                        if let CharacterState::ChargedMelee(c) = &mut update.character {
108                            c.stage_section = StageSection::Charge;
109                            c.timer = Duration::default();
110                        }
111                    }
112                } else if let CharacterState::ChargedMelee(c) = &mut update.character {
113                    c.stage_section = StageSection::Charge;
114                    c.timer = Duration::default();
115                }
116            },
117            StageSection::Charge => {
118                if input_is_pressed(data, self.static_data.ability_info.input)
119                    && update.energy.current() >= self.static_data.energy_cost
120                    && self.timer < self.static_data.charge_duration
121                {
122                    let charge = (self.timer.as_secs_f32()
123                        / self.static_data.charge_duration.as_secs_f32())
124                    .min(1.0);
125
126                    // Charge the attack
127                    if let CharacterState::ChargedMelee(c) = &mut update.character {
128                        c.timer = tick_attack_or_default(data, self.timer, None);
129                        c.charge_amount = charge;
130                    }
131
132                    // Consumes energy if there's enough left and RMB is held down
133                    update
134                        .energy
135                        .change_by(-self.static_data.energy_drain * data.dt.0);
136                } else if input_is_pressed(data, self.static_data.ability_info.input)
137                    && update.energy.current() >= self.static_data.energy_cost
138                {
139                    // Maintains charge
140                    if let CharacterState::ChargedMelee(c) = &mut update.character {
141                        c.timer = tick_attack_or_default(data, self.timer, None);
142                    }
143
144                    // Consumes energy if there's enough left and RMB is held down
145                    update
146                        .energy
147                        .change_by(-self.static_data.energy_drain * data.dt.0 / 5.0);
148                } else {
149                    // Transitions to swing
150                    if let CharacterState::ChargedMelee(c) = &mut update.character {
151                        c.stage_section = StageSection::Action;
152                        c.timer = Duration::default();
153                        c.movement_modifier = self.static_data.movement_modifier.swing;
154                        c.ori_modifier = self.static_data.ori_modifier.swing;
155                    }
156                }
157            },
158            StageSection::Action => {
159                if self.timer.as_millis() as f32
160                    > self.static_data.hit_timing
161                        * self.static_data.swing_duration.as_millis() as f32
162                    && !self.exhausted
163                {
164                    // Swing
165                    if let CharacterState::ChargedMelee(c) = &mut update.character {
166                        c.timer = tick_attack_or_default(data, self.timer, None);
167                        c.exhausted = true;
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                            .clone()
190                            .custom_combo(custom_combo)
191                            .handle_scaling(self.charge_amount)
192                            .create_melee(
193                                precision_mult,
194                                tool_stats,
195                                self.static_data.ability_info,
196                            ),
197                    );
198
199                    if let Some(FrontendSpecifier::GroundCleave) = self.static_data.specifier {
200                        // Send local event used for frontend shenanigans
201                        output_events.emit_local(LocalEvent::CreateOutcome(Outcome::GroundSlam {
202                            pos: data.pos.0
203                                + *data.ori.look_dir()
204                                    * (data.body.max_radius()
205                                        + self.static_data.melee_constructor.range),
206                        }));
207                    }
208                } else if self.timer < self.static_data.swing_duration {
209                    // Swings
210                    if let CharacterState::ChargedMelee(c) = &mut update.character {
211                        c.timer = tick_attack_or_default(data, self.timer, None);
212                    }
213                } else {
214                    // Transitions to recover
215                    if let CharacterState::ChargedMelee(c) = &mut update.character {
216                        c.stage_section = StageSection::Recover;
217                        c.timer = Duration::default();
218                        c.movement_modifier = self.static_data.movement_modifier.recover;
219                        c.ori_modifier = self.static_data.ori_modifier.recover;
220                    }
221                }
222            },
223            StageSection::Recover => {
224                if self.timer < self.static_data.recover_duration {
225                    // Recovers
226                    if let CharacterState::ChargedMelee(c) = &mut update.character {
227                        c.timer = tick_attack_or_default(
228                            data,
229                            self.timer,
230                            Some(data.stats.recovery_speed_modifier),
231                        );
232                    }
233                } else {
234                    // Done
235                    end_melee_ability(data, &mut update);
236                }
237            },
238            _ => {
239                // If it somehow ends up in an incorrect stage section
240                end_melee_ability(data, &mut update);
241            },
242        }
243
244        // At end of state logic so an interrupt isn't overwritten
245        handle_interrupts(data, &mut update, output_events);
246
247        update
248    }
249}
250
251/// Used to specify a particular effect for frontend purposes
252#[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
253pub enum FrontendSpecifier {
254    GroundCleave,
255}
veloren_common/states/charged_melee.rs

veloren_common/states/
charged_melee.rs
