From c67b409dd32e4aa795e5aa9868202c910fc9ffd0 Mon Sep 17 00:00:00 2001
From: quou <quou@disroot.org>
Date: Wed, 17 Jul 2024 21:29:29 +1000
Subject: simple mouse look

---
 3de.c      | 20 +++++++++++++++-----
 Makefile   |  1 +
 player.c   | 33 +++++++++++++++++++++++++++++++++
 player.h   | 16 ++++++++++++++++
 services.h |  9 +++++++++
 5 files changed, 74 insertions(+), 5 deletions(-)
 create mode 100644 player.c
 create mode 100644 player.h
 create mode 100644 services.h

diff --git a/3de.c b/3de.c
index 23e4d13..6197321 100644
--- a/3de.c
+++ b/3de.c
@@ -3,7 +3,9 @@
 #include "maths.h"
 #include "memory.h"
 #include "plat.h"
+#include "player.h"
 #include "render.h"
+#include "services.h"
 #include "tile.h"
 
 #include <stdio.h>
@@ -21,13 +23,13 @@ void draw_monkey(Renderer* r) {
 	static int a = 0;
 	const Mesh* m = get_mesh(asset_id_monkey);
 	Bitmap tex = { (Colour*)tile_pixels, 16, 16 };
-	int p[] = { 0, 0, 5 << fbits, f1 };
+	int p[] = { 0, 0, 0, f1 };
 	mtx_push_trans(p);
-	mtx_push_rot_x(a);
+	/*mtx_push_rot_x(a);
 	mtx_push_rot_y(a);
-	mtx_push_rot_z(a);
+	mtx_push_rot_z(a);*/
 	ren_mesh(r, m, &tex);
-	mtx_popn(4);
+	mtx_popn(1);
 	a++;
 }
 
@@ -50,6 +52,8 @@ int entrypoint(int argc, const char** argv, Arena* a) {
 	int* depth = 0;
 	Arena preload;
 	Colour blue = make_aliceblue();
+	Player p;
+	Services s;
 	(void)argc;
 	(void)argv;
 	init_maths();
@@ -72,11 +76,15 @@ int entrypoint(int argc, const char** argv, Arena* a) {
 		return error_out_of_memory;
 	}
 	preload_assets(&preload);
+	s.a = app;
+	s.r = &r;
 	cfg_mouse(app, 0);
+	init_player(&p);
 	while (app->o) {
 		fps_begin(&f);
 		while (f.now >= f.next) {
 			app_begin(app);
+			update_player(&p, &s);
 			ren_begin(&r, app->fb, depth, app->w, app->h);
 				ren_clear(&r);
 				ren_cleard(&r, f1 * 300);
@@ -86,8 +94,10 @@ int entrypoint(int argc, const char** argv, Arena* a) {
 				ren_texts(&r, blue, 3, 8,  buf);
 				sprintf(buf, "MOUSE: %d, %d", app->mx, app->my);
 				ren_texts(&r, blue, 3, 13, buf);
+				push_player_cam(&p);
 				draw_monkey(&r);
-				draw_tri(&r, app->mx, app->my);
+				pop_player_cam();
+				/*draw_tri(&r, app->mx, app->my);*/
 			ren_end(&r);
 			app_end(app);
 			fps_update(&f);
diff --git a/Makefile b/Makefile
index d183d38..33c0c01 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,7 @@ sources = \
 	maths.c \
 	memory.c \
 	plat.c \
+	player.c \
 	rect.c \
 	render.c \
 	standard.c
diff --git a/player.c b/player.c
new file mode 100644
index 0000000..2ba3885
--- /dev/null
+++ b/player.c
@@ -0,0 +1,33 @@
+#include "maths.h"
+#include "plat.h"
+#include "player.h"
+#include "services.h"
+
+void init_player(Player* p) {
+	int ip[] = { 0, 0, -(5 << fbits) };
+	vec_cpy(p->p, ip, 3);
+	p->r[0] = 0;
+	p->r[1] = 0;
+}
+
+void update_player(Player* p, struct Services* s) {
+	App* a = s->a;
+/*	p->r[0] -= a->dmy;*/
+	p->r[1] -= a->dmx;
+/*	p->p[0] -= sin_table[p->r[1] & sin_table_mask] / 3;
+	p->p[2] += cos_table[p->r[1] & sin_table_mask] / 3;*/
+}
+
+void push_player_cam(const Player* p) {
+	int v[3];
+	v[0] = -p->p[0];
+	v[1] = -p->p[1];
+	v[2] = -p->p[2];
+	mtx_push_rot_y(p->r[1] / 10);
+	mtx_push_rot_x(p->r[0] / 10);
+	mtx_push_trans(v);
+}
+
+void pop_player_cam(void) {
+	mtx_popn(3);
+}
diff --git a/player.h b/player.h
new file mode 100644
index 0000000..5c26b9d
--- /dev/null
+++ b/player.h
@@ -0,0 +1,16 @@
+#ifndef player_h
+#define player_h
+
+struct Services;
+
+typedef struct {
+	int p[3];
+	int r[2];
+} Player;
+
+void init_player(Player* p);
+void update_player(Player* p, struct Services* s);
+void push_player_cam(const Player* p);
+void pop_player_cam(void);
+
+#endif
diff --git a/services.h b/services.h
new file mode 100644
index 0000000..86adee2
--- /dev/null
+++ b/services.h
@@ -0,0 +1,9 @@
+#ifndef services_h
+#define services_h
+
+typedef struct Services {
+	App* a;
+	Renderer* r;
+} Services;
+
+#endif
-- 
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