From 01529fbe5dd7cffbc78bd21118e601b0a47172d4 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Wed, 13 Jun 2012 17:53:08 +0100
Subject: centre seeking real good

---
 gaunt01/src/bird.cpp    | 23 +++++++++++++++++++----
 gaunt01/src/bird.h      |  2 ++
 gaunt01/src/testApp.cpp | 10 +++++++++-
 gaunt01/src/testApp.h   |  1 +
 4 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/gaunt01/src/bird.cpp b/gaunt01/src/bird.cpp
index 18f8227..09e8a60 100644
--- a/gaunt01/src/bird.cpp
+++ b/gaunt01/src/bird.cpp
@@ -41,6 +41,10 @@ void bird::setBounds(ofPlane* _bounds) {
 	bounds=_bounds;
 }
 
+void bird::setCentre(ofVec2f _centre) {
+	//in 2D on plane
+	centre=_centre;
+}
 bird::~bird()
 {
     //dtor
@@ -82,6 +86,9 @@ void bird::update(map<int,player>& players, float angle){
 	pointer=ofRay(position.rotated(angle,ofVec3f(1,0,0)),-direction.rotated(heading,ofVec3f(0,0,-1)).rotated(angle,ofVec3f(1,0,0))*1000.0f,false);
 
 	//intersect with bounds and find shortest distance to edge of world
+	//
+	//
+	/*
 	float shortest=1000000.0f;
 	vector <ofVec3f> pts;
 	int shnum=-1;
@@ -108,16 +115,24 @@ void bird::update(map<int,player>& players, float angle){
 	else {
 		printf("error: no bird bounds intersection\n");
 	}
+	*/
+	//avoiding edges is a bit of a nightmare
+	//turnRate=(turnRate*.99)+(0.05f*max(0.0f,1.0f-(pow(edgelength*.0100f,2.0f)))*max(0.0f,90.0f-abs(edgeangle))*sign(edgeangle)); 
 
 	//decide whether we are running out of space and if so, which way to turn#
 	//turning tendency is more acute when we are more perpendicular, and closer, to the edge
 	//mayeb work out how many frames left before we crash
 
-	//turn formula max(0,90-abs(turnangle))*sign(turnangle)
-	//avoiding edges is a bit of a nightmare
 	//what about a force attracting to the middle of the screen?
-
-	turnRate=(turnRate*.99)+(0.05f*max(0.0f,1.0f-(pow(edgelength*.0100f,2.0f)))*max(0.0f,90.0f-abs(edgeangle))*sign(edgeangle)); 
+	float radius=centre.distance(ofVec2f(position.x,position.y));
+	//angle from centre to bird position
+	edgeangle=(180.0f+(90.0f-(atan2(position.y-centre.y,position.x-centre.x)*RAD_TO_DEG)))-heading;
+	while (edgeangle>180.0f) edgeangle -=360.0f;
+	while (edgeangle<-180.0f) edgeangle +=360.0f;
+	turnRate=(turnRate*.995)+(pow(0.002f*radius,2)*edgeangle*0.01);
+	
+	//need: a function for generating the angle between things
+	
 
 	//strip it right back
 	//bird flying in circle
diff --git a/gaunt01/src/bird.h b/gaunt01/src/bird.h
index c1f3ac7..1bc99c5 100644
--- a/gaunt01/src/bird.h
+++ b/gaunt01/src/bird.h
@@ -59,6 +59,7 @@ class bird
 	void drawDebug();
 
 	void	setBounds(ofPlane* _bounds);
+	void	setCentre(ofVec2f _centre);
 
         string currentseq;
         morphmesh model;
@@ -77,6 +78,7 @@ class bird
 	vector<ofVec3f> playpos;
 
 	ofPlane* bounds;
+	ofVec2f centre;
 
 	bool leaving;
 	float centrehead;
diff --git a/gaunt01/src/testApp.cpp b/gaunt01/src/testApp.cpp
index 6ac3d26..379fb17 100644
--- a/gaunt01/src/testApp.cpp
+++ b/gaunt01/src/testApp.cpp
@@ -137,7 +137,6 @@ void testApp::setup(){
 	cam.end();
 
 	updatePlane();
-	Bird.setBounds(bounds);
 
 }
 
@@ -291,6 +290,15 @@ void testApp::updatePlane(){
 	else printf("bound plane 4 not found\n");
 	pn=(p-projector.getGlobalPosition()).getPerpendicular(ofVec3f(-1,0,0));
 	bounds[3]=ofPlane(p,pn); //,-pn,ofVec2f(1000,1000));
+	
+	l=ofVec2f(windowWidth/2,windowHeight/2);
+	r=projector.castPixel(l.x,l.y);
+	if (plane.intersect(r,centre)) printf("found centre point at %f,%f,%f\n",centre.x,centre.y,centre.z);
+	else printf("centre point not found\n");
+	ofVec3f c=centre.rotated(cam_angle,ofVec3f(-1,0,0));
+	
+	Bird.setBounds(bounds);
+	Bird.setCentre(ofVec2f(c.x,c.y));
 
 
 //	vector<trapdoor> trapdoors;
diff --git a/gaunt01/src/testApp.h b/gaunt01/src/testApp.h
index 01301de..ca10681 100644
--- a/gaunt01/src/testApp.h
+++ b/gaunt01/src/testApp.h
@@ -124,6 +124,7 @@ class testApp : public ofBaseApp{
 		ofLight light;
 
 		ofPlane* bounds;
+		ofVec3f centre;
 
 		vector<ofPoint> border;
 		bool drawingborder;
-- 
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