From: Lukas Krickl <lukas@krickl.dev>
Date: Sun, 22 Feb 2026 08:20:00 +0000 (+0100)
Subject: engine: wip utility functions
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=07763cd89c030aa256f2fb060f97c2cc19f04447;p=lrts%2F.git

engine: wip utility functions
---

diff --git a/src/lrts.h b/src/lrts.h
index 4e5d9c9..704d0a1 100644
--- a/src/lrts.h
+++ b/src/lrts.h
@@ -36,9 +36,10 @@
 #endif
 
 
-#include "t_actor.c"
+#include "t_unit.c"
 #include "u_rand.c"
 #include "n_conn.c"
+#include "u_math.c"
 
 #endif
 
diff --git a/src/t_actor.c b/src/t_actor.c
deleted file mode 100644
index d948cdd..0000000
--- a/src/t_actor.c
+++ /dev/null
@@ -1 +0,0 @@
-#include "t_actor.h"
diff --git a/src/t_actor.h b/src/t_actor.h
deleted file mode 100644
index 224053e..0000000
--- a/src/t_actor.h
+++ /dev/null
@@ -1,61 +0,0 @@
-#ifndef T_ACTOR_H__
-#define T_ACTOR_H__
-
-enum t_actor_flags {
-	T_ACTOR_F_NONE = 0
-};
-
-/**
- * Character stats
- */
-struct t_stats {
-	/**
-	 * base stats
-	 */ 
-	short str;
-	short wis;
-	short agi;
-	short vit;
-
-	/* resistances */
-	short poison_res;
-	short fire_res;
-	short holy_res;
-	short chaos_res;
-
-	/* damage stats */
-	unsigned int physical_damage;
-	unsigned int magic_damage;
-
-	/* misc */
-	unsigned char tohit;
-};
-
-/* current actor state
- * this struct mostly contains 
- * mutable variables related to an actor
- */
-struct t_actor_state {
-	int hp;
-	int mp;
-	int level;
-	int xp;
-};
-
-enum t_actor_type {
-	T_ACTOR_TYPE_PLAYER,
-	T_ACTOR_TYPE_PET
-};
-
-struct t_actor {
-	unsigned int id;
-	enum t_actor_type type;
-
-	unsigned short faction_id;
-
-	struct t_stats stats;
-	struct t_actor_state state;
-};
-
-
-#endif
diff --git a/src/t_command.h b/src/t_command.h
new file mode 100644
index 0000000..c059cf1
--- /dev/null
+++ b/src/t_command.h
@@ -0,0 +1,33 @@
+#ifndef T_COMMAND_H__
+#define T_COMMAND_H__
+
+/**
+ * A command is an order for a unit.
+ * each unit has a command queue.
+ */
+
+#define T_COMMANDS_MAX 8
+
+enum t_command_type {
+	T_COMMAND_NONE = 0
+};
+
+enum t_command_flags {
+	T_COMMAND_F_NONE = 0
+};
+
+struct t_command {
+	enum t_command_type type;	
+	enum t_command_flags flags;
+};
+
+/**
+ * This is a comamnd buffer
+ * It wraps around and keeps track of the current command
+ */
+struct t_command_queue {
+	u8 current;
+	struct t_command buffer[T_COMMANDS_MAX];
+};
+
+#endif
diff --git a/src/t_unit.c b/src/t_unit.c
new file mode 100644
index 0000000..a29f38e
--- /dev/null
+++ b/src/t_unit.c
@@ -0,0 +1 @@
+#include "t_unit.h"
diff --git a/src/t_unit.h b/src/t_unit.h
new file mode 100644
index 0000000..6335bbe
--- /dev/null
+++ b/src/t_unit.h
@@ -0,0 +1,44 @@
+#ifndef T_UNIT_H__
+#define T_UNIT_H__
+
+#include "t_command.h"
+#include "u_defs.h"
+
+enum t_unit_flags {
+	T_UNIT_F_NONE = 0
+};
+
+enum t_unit_type {
+	T_UNIT_TYPE_NONE = 0
+};
+
+/* unit damage type */
+enum t_unit_damage_type {
+	T_UNIT_SLASHING,
+	T_UNIT_PIERCING,
+	T_UNIT_SIEGE
+};
+
+struct t_unit {
+	unsigned int id;
+	enum t_unit_type type;
+	enum t_unit_flags flags;
+	
+	i16 view_radius;
+
+	i16 hp;
+	i16 hp_max;
+	i16 armor;
+
+	/* Unit damage type and damage range */
+	i16 damage_min;
+	i16 damage_max;
+	enum t_unit_damage_type damage_type;
+
+	/* a unit can be reistant to certain damage types */
+	enum t_unit_damage_type res;
+
+	struct t_command_queue commands;
+};
+
+#endif
diff --git a/src/u_math.c b/src/u_math.c
new file mode 100644
index 0000000..a1af48a
--- /dev/null
+++ b/src/u_math.c
@@ -0,0 +1,31 @@
+#include "u_math.h"
+
+struct u_fp u_fp_add(struct u_fp a, struct u_fp b) {
+	struct u_fp c = U_FP(0, 0);
+	lrts_todo("");
+	return c;
+}
+
+struct u_fp u_fp_sub(struct u_fp a, struct u_fp b) {
+	struct u_fp c = U_FP(0, 0);
+	lrts_todo("");
+	return c;
+}
+
+struct u_fp u_fp_mul(struct u_fp a, struct u_fp b) {
+	struct u_fp c = U_FP(0, 0);
+	lrts_todo("");
+	return c;
+}
+
+struct u_fp u_fp_div(struct u_fp a, struct u_fp b) {
+	struct u_fp c = U_FP(0, 0);
+	lrts_todo("");
+	return c;
+}
+
+struct u_fp u_fp_mod(struct u_fp a, struct u_fp b) {
+	struct u_fp c = U_FP(0, 0);
+	lrts_todo("");
+	return c;
+}
diff --git a/src/u_math.h b/src/u_math.h
new file mode 100644
index 0000000..1ce953c
--- /dev/null
+++ b/src/u_math.h
@@ -0,0 +1,21 @@
+#ifndef U_MATH_H__
+#define U_MATH_H__
+
+#define U_FP(n, f) {n, f}
+
+/* fixed point number 
+ * n: whole part
+ * f: fractional part
+ */
+struct u_fp {
+	u16 n;
+	u16 f;
+};
+
+struct u_fp u_fp_add(struct u_fp a, struct u_fp b);
+struct u_fp u_fp_sub(struct u_fp a, struct u_fp b);
+struct u_fp u_fp_mul(struct u_fp a, struct u_fp b);
+struct u_fp u_fp_div(struct u_fp a, struct u_fp b);
+struct u_fp u_fp_mod(struct u_fp a, struct u_fp b);
+
+#endif