Armour system

armour.c

@@ -0,0 +1,18 @@
+typedef enum Armour {
+    ARMOUR_none = 0,
+    ARMOUR_starter = 1,
+} Armour;
+
+Sprite_ID armour_sprite_id(Armour armour) {
+	switch (armour) {
+		case ARMOUR_starter: return SPRITE_starterarmour; break;
+		default: return SPRITE_nil;
+	}
+}
+
+float armour_damage_multiplier(Armour armour) {
+    switch (armour) {
+        case ARMOUR_starter: return 0.8; break;
+        default: return 1;
+    }
+}

entity.c

@@ -28,6 +28,7 @@ typedef struct Entity {
     Vector2 hitbox[4];
     Entity_Archetype primary_weapon;
     Entity_Archetype secondary_weapon;
+    Armour armour;
     bool is_weapon;
     Weapon_Class weapon_class;
 	Vector2 weapon_owner_pos;
@@ -113,6 +114,7 @@ Vector2* entity_resolve_hitbox(Entity* en) {
 }
 
 void entity_take_damage(Entity* en, float damage) {
+    damage *= armour_damage_multiplier(en->armour);
     en->health = clamp(en->health - damage, 0, en->max_health);
     // todo add knockback
 }

entry_helpless.c

@@ -1,5 +1,6 @@
 #include "util.c"
 #include "sprite.c"
+#include "armour.c"
 #include "entity.c"
 #include "gjk.c"
 #include "weapon.c"
@@ -43,6 +44,7 @@ int entry(int argc, char **argv) {
 	sprite_load(STR("assets/spider.png"), SPRITE_spider);
 	sprite_load(STR("assets/startersword.png"), SPRITE_startersword);
 	sprite_load(STR("assets/starterbow.png"), SPRITE_starterbow);
+	sprite_load(STR("assets/starterarmour.png"), SPRITE_starterarmour);
 	sprite_load(STR("assets/arrow.png"), SPRITE_arrow);
 
 	Gfx_Font* font = load_font_from_disk(STR("assets/m3x6.ttf"), get_heap_allocator());
@@ -222,6 +224,10 @@ int entry(int argc, char **argv) {
 
 				xform = m4_translate(xform, v3(sprite->size.x * -0.5, sprite->size.y * -0.5, 0));
 				draw_image_xform(sprite->image, xform, sprite->size, COLOR_WHITE);
+				if (en->armour != ARMOUR_none) {
+					Sprite* armour_sprite = sprite_get(armour_sprite_id(en->armour));
+					draw_image_xform(armour_sprite->image, xform, armour_sprite->size, COLOR_WHITE);
+				}
 			}
 		}
 

player.c

@@ -4,6 +4,7 @@ void player_setup(Entity* en) {
 	en->is_animate = true;
 	en->max_health = 100;
 	en->health = en->max_health;
+    en->armour = ARMOUR_starter;
 }
 
 void player_process_input(Entity* player, Entity* player_weapon, float delta_time) {

sprite.c

@@ -11,6 +11,7 @@ typedef enum Sprite_ID {
 	SPRITE_tree,
 	SPRITE_startersword,
 	SPRITE_starterbow,
+    SPRITE_starterarmour,
     SPRITE_arrow,
 	SPRITE_MAX, 
 } Sprite_ID;