From 95bd48a7b0556adab5250cae766ee9dd9c6b2cde Mon Sep 17 00:00:00 2001
From: KonAki <konaki@anokonaki.org>
Date: Sun, 11 Oct 2026 21:57:22 +0800
Subject: konsofren: 3D is opt-in with KONSOFREN_3D, build.sh sets it for 3d,
 model and sector

---
 src/engine.c | 55 ++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 44 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/engine.c b/src/engine.c
index 1594032..362e522 100644
--- a/src/engine.c
+++ b/src/engine.c
@@ -1,11 +1,17 @@
 #include "konprogram.h"
 
+/* the starting point for a game. with the 3d module (./build.sh -m 3d) it is a spinning cube, without it a square that bounces around */
+
 typedef struct demo {
+#ifdef KONSOFREN_3D
 	kon_camera_t camera;
 	kon_material_t material;
 	kon_light_t light;
-	float angle;
 	int ortho;
+#else
+	float x, y, vx, vy;
+#endif
+	float angle;
 } demo_t;
 
 static int init(kon_program_t *program, void *user)
@@ -13,23 +19,36 @@ static int init(kon_program_t *program, void *user)
 	demo_t *demo = user;
 
 	(void)program;
+#ifdef KONSOFREN_3D
 	demo->camera = kon_cameraDefault();
 	demo->camera.position = KON_VEC3(3, 3, 6);
 	demo->material = kon_materialColor(0xFFC8C8FF);
 	demo->light = kon_lightDefault();
+#else
+	demo->x = 40.0f;
+	demo->y = 30.0f;
+	demo->vx = 70.0f;
+	demo->vy = 50.0f;
+#endif
 	return 1;
 }
 
 static int event(kon_program_t *program, const kon_event_t *ev, void *user)
 {
-	demo_t *demo = user;
-
 	(void)program;
-	if (ev->type == KON_EVENT_KEY_DOWN && ev->key == KON_KEY_O) {
-		demo->ortho = !demo->ortho;
-		demo->camera.projection = demo->ortho ? KON_PROJECTION_ORTHOGRAPHIC : KON_PROJECTION_PERSPECTIVE;
-		return 1;
+#ifdef KONSOFREN_3D
+	{
+		demo_t *demo = user;
+
+		if (ev->type == KON_EVENT_KEY_DOWN && ev->key == KON_KEY_O) {
+			demo->ortho = !demo->ortho;
+			demo->camera.projection = demo->ortho ? KON_PROJECTION_ORTHOGRAPHIC : KON_PROJECTION_PERSPECTIVE;
+			return 1;
+		}
 	}
+#else
+	(void)ev; (void)user;
+#endif
 	return 0;
 }
 
@@ -37,18 +56,32 @@ static void update(kon_program_t *program, double dt, void *user)
 {
 	demo_t *demo = user;
 
-	(void)program;
 	demo->angle += (float)dt;
+#ifndef KONSOFREN_3D
+	demo->x += demo->vx * (float)dt;
+	demo->y += demo->vy * (float)dt;
+	if (demo->x < 0.0f || demo->x > (float)program->display->game->width - 24.0f) demo->vx = -demo->vx;
+	if (demo->y < 0.0f || demo->y > (float)program->display->game->height - 24.0f) demo->vy = -demo->vy;
+#else
+	(void)program;
+#endif
 }
 
 static void draw(kon_program_t *program, kon_framebuffer_t *game, void *user)
 {
 	demo_t *demo = user;
-	kon_mat4_t model = kon_mat4Rotate(kon_mat4Identity(), KON_VEC3(demo->angle * 0.5f, demo->angle, 0));
-	kon_mat4_t viewProjection = kon_cameraViewProjection(&demo->camera, game->width, game->height);
 
 	(void)program;
-	kon_drawMesh(game, viewProjection, model, &kon_cubeMesh, &demo->material, &demo->light, KON_RENDER_DEFAULT);
+#ifdef KONSOFREN_3D
+	{
+		kon_mat4_t model = kon_mat4Rotate(kon_mat4Identity(), KON_VEC3(demo->angle * 0.5f, demo->angle, 0));
+		kon_mat4_t viewProjection = kon_cameraViewProjection(&demo->camera, game->width, game->height);
+
+		kon_drawMesh(game, viewProjection, model, &kon_cubeMesh, &demo->material, &demo->light, KON_RENDER_DEFAULT);
+	}
+#else
+	kon_fillRectangle(game, (int)demo->x, (int)demo->y, 24, 24, 0xFFF2A7C3);
+#endif
 }
 
 int main(void)
-- 
cgit