feat: damage types

1 files changed, 37 insertions, 0 deletions

diff --git a/src/shared/damage.rs b/src/shared/damage.rs
new file mode 100644
index 0000000..c336d87
--- /dev/null
+++ b/src/shared/damage.rs
@@ -0,0 +1,37 @@
+use crate::shared::stats::*;
+use crate::shared::*;
+
+#[derive(Clone, Copy, PartialEq, Debug, Serialize, Deserialize)]
+pub enum Damage {
+    Magical(f32),
+    Physical(f32),
+    True(f32),
+}
+
+impl Damage {
+    pub fn apply(self, stats: Stats) -> f32 {
+        match self {
+            Damage::Magical(magical_damage) => {
+                magical_damage * damage_multiplier(stats.magic_resist)
+            }
+            Damage::Physical(physical_damage) => physical_damage * damage_multiplier(stats.armor),
+            Damage::True(true_damage) => true_damage,
+        }
+    }
+
+    pub fn scale(self, factor: f32) -> Self {
+        match self {
+            Damage::Magical(magical_damage) => Damage::Magical(magical_damage * factor),
+            Damage::Physical(physical_damage) => Damage::Physical(physical_damage * factor),
+            Damage::True(true_damage) => Damage::True(true_damage * factor),
+        }
+    }
+}
+
+fn damage_multiplier(resistance: f32) -> f32 {
+    if resistance >= 0. {
+        100. / (100. + resistance)
+    } else {
+        2. - 100. / (100. - resistance)
+    }
+}