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}
46
47#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
48pub struct Data {
49    /// Struct containing data that does not change over the course of the
50    /// character state
51    pub static_data: StaticData,
52    /// Checks what section a stage is in
53    pub stage_section: StageSection,
54    /// Timer for each stage
55    pub timer: Duration,
56    /// Whether the attack executed already
57    pub exhausted: bool,
58    /// How much the attack charged by
59    pub charge_amount: f32,
60}
61
62impl Data {
63    /// How complete the charge is, on a scale of 0.0 to 1.0
64    pub fn charge_frac(&self) -> f32 {
65        if let StageSection::Charge = self.stage_section {
66            (self.timer.as_secs_f32() / self.static_data.charge_duration.as_secs_f32()).min(1.0)
67        } else {
68            0.0
69        }
70    }
71}
72
73impl CharacterBehavior for Data {
74    fn behavior(&self, data: &JoinData, output_events: &mut OutputEvents) -> StateUpdate {
75        let mut update = StateUpdate::from(data);
76
77        handle_orientation(data, &mut update, 1.0, None);
78        handle_move(data, &mut update, 0.7);
79        handle_jump(data, output_events, &mut update, 1.0);
80
81        match self.stage_section {
82            StageSection::Buildup => {
83                if let Some((buildup, strike)) = self.static_data.buildup_strike {
84                    if self.timer < buildup {
85                        if let CharacterState::ChargedMelee(c) = &mut update.character {
86                            c.timer = tick_attack_or_default(data, self.timer, None);
87                        }
88                    } else {
89                        let precision_mult =
90                            combat::compute_precision_mult(data.inventory, data.msm);
91                        let tool_stats = get_tool_stats(data, self.static_data.ability_info);
92                        data.updater
93                            .insert(data.entity, strike.create_melee(precision_mult, tool_stats));
94
95                        if let CharacterState::ChargedMelee(c) = &mut update.character {
96                            c.stage_section = StageSection::Charge;
97                            c.timer = Duration::default();
98                        }
99                    }
100                } else if let CharacterState::ChargedMelee(c) = &mut update.character {
101                    c.stage_section = StageSection::Charge;
102                    c.timer = Duration::default();
103                }
104            },
105            StageSection::Charge => {
106                if input_is_pressed(data, self.static_data.ability_info.input)
107                    && update.energy.current() >= self.static_data.energy_cost
108                    && self.timer < self.static_data.charge_duration
109                {
110                    let charge = (self.timer.as_secs_f32()
111                        / self.static_data.charge_duration.as_secs_f32())
112                    .min(1.0);
113
114                    // Charge the attack
115                    update.character = CharacterState::ChargedMelee(Data {
116                        timer: tick_attack_or_default(data, self.timer, None),
117                        charge_amount: charge,
118                        ..*self
119                    });
120
121                    // Consumes energy if there's enough left and RMB is held down
122                    update
123                        .energy
124                        .change_by(-self.static_data.energy_drain * data.dt.0);
125                } else if input_is_pressed(data, self.static_data.ability_info.input)
126                    && update.energy.current() >= self.static_data.energy_cost
127                {
128                    // Maintains charge
129                    update.character = CharacterState::ChargedMelee(Data {
130                        timer: tick_attack_or_default(data, self.timer, None),
131                        ..*self
132                    });
133
134                    // Consumes energy if there's enough left and RMB is held down
135                    update
136                        .energy
137                        .change_by(-self.static_data.energy_drain * data.dt.0 / 5.0);
138                } else {
139                    // Transitions to swing
140                    update.character = CharacterState::ChargedMelee(Data {
141                        stage_section: StageSection::Action,
142                        timer: Duration::default(),
143                        ..*self
144                    });
145                }
146            },
147            StageSection::Action => {
148                if self.timer.as_millis() as f32
149                    > self.static_data.hit_timing
150                        * self.static_data.swing_duration.as_millis() as f32
151                    && !self.exhausted
152                {
153                    // Swing
154                    update.character = CharacterState::ChargedMelee(Data {
155                        timer: tick_attack_or_default(data, self.timer, None),
156                        exhausted: true,
157                        ..*self
158                    });
159
160                    let precision_mult = combat::compute_precision_mult(data.inventory, data.msm);
161                    let tool_stats = get_tool_stats(data, self.static_data.ability_info);
162                    let custom_combo = CustomCombo {
163                        base: self
164                            .static_data
165                            .custom_combo
166                            .base
167                            .map(|b| (self.charge_amount * b as f32).round() as i32),
168                        conditional: self
169                            .static_data
170                            .custom_combo
171                            .conditional
172                            .map(|c| ((self.charge_amount * c.0 as f32).round() as i32, c.1)),
173                    };
174
175                    data.updater.insert(
176                        data.entity,
177                        self.static_data
178                            .melee_constructor
179                            .custom_combo(custom_combo)
180                            .handle_scaling(self.charge_amount)
181                            .create_melee(precision_mult, tool_stats),
182                    );
183
184                    if let Some(FrontendSpecifier::GroundCleave) = self.static_data.specifier {
185                        // Send local event used for frontend shenanigans
186                        output_events.emit_local(LocalEvent::CreateOutcome(Outcome::GroundSlam {
187                            pos: data.pos.0
188                                + *data.ori.look_dir()
189                                    * (data.body.max_radius()
190                                        + self.static_data.melee_constructor.range),
191                        }));
192                    }
193                } else if self.timer < self.static_data.swing_duration {
194                    // Swings
195                    update.character = CharacterState::ChargedMelee(Data {
196                        timer: tick_attack_or_default(data, self.timer, None),
197                        ..*self
198                    });
199                } else {
200                    // Transitions to recover
201                    update.character = CharacterState::ChargedMelee(Data {
202                        stage_section: StageSection::Recover,
203                        timer: Duration::default(),
204                        ..*self
205                    });
206                }
207            },
208            StageSection::Recover => {
209                if self.timer < self.static_data.recover_duration {
210                    // Recovers
211                    update.character = CharacterState::ChargedMelee(Data {
212                        timer: tick_attack_or_default(
213                            data,
214                            self.timer,
215                            Some(data.stats.recovery_speed_modifier),
216                        ),
217                        ..*self
218                    });
219                } else {
220                    // Done
221                    end_melee_ability(data, &mut update);
222                }
223            },
224            _ => {
225                // If it somehow ends up in an incorrect stage section
226                end_melee_ability(data, &mut update);
227            },
228        }
229
230        // At end of state logic so an interrupt isn't overwritten
231        handle_interrupts(data, &mut update, output_events);
232
233        update
234    }
235}
236
237/// Used to specify a particular effect for frontend purposes
238#[derive(Copy, Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
239pub enum FrontendSpecifier {
240    GroundCleave,
241}
veloren_common/states/charged_melee.rs

veloren_common/states/
charged_melee.rs
