From 09fba466578c1074bf7471bbc4615a9047237d46 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Thu, 19 Apr 2012 02:14:26 +0100
Subject: bird chasing players

---
 gaunt01/src/bird.cpp | 51 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 48 insertions(+), 3 deletions(-)

(limited to 'gaunt01/src/bird.cpp')

diff --git a/gaunt01/src/bird.cpp b/gaunt01/src/bird.cpp
index 69549e0..35d9020 100644
--- a/gaunt01/src/bird.cpp
+++ b/gaunt01/src/bird.cpp
@@ -23,13 +23,15 @@ bird::bird()
 	texture.loadImage("TextureBird.jpg");
 
 	//starting pos
-	position=ofVec3f(ofGetWidth()/2,ofGetHeight(),-ofGetHeight()/4);
+	position=ofVec3f(ofGetWidth()/2,ofGetHeight(),-ofGetHeight()/10);
 	heading=-90;
 	direction=ofVec3f(0,-1,0); //director for a heading of 0, level
 	velocity=ofGetWidth()/50;
 
 	turnRate=20;
 	diveRate=0;
+	
+	fieldofview=60;
 
 	lastTime=ofGetElapsedTimef();
 }
@@ -39,13 +41,51 @@ bird::~bird()
     //dtor
 }
 
-void bird::update(const map<int,player>& players){
+void bird::update(map<int,player>& players, float angle){
 	float time=ofGetElapsedTimef();
 	float timeSeg=time-lastTime;
 	lastTime=time;
-	heading+=turnRate*timeSeg;
+	heading=heading+(turnRate*timeSeg);
+	while (heading>180) heading=heading-360;
+	while (heading <-180) heading=heading+360;
 
 	position-=direction.rotated(heading,ofVec3f(0,0,-1))*velocity*timeSeg; //.rotate(heading,ofVec3f(0,1,0))
+	
+	//absolute ray pointer
+	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);
+
+	ofRay relpointer=ofRay(position,-direction.rotated(heading,ofVec3f(0,0,-1))*1000.0f,false);
+	
+	playang.clear();
+	playdist.clear();
+	playpos.clear();
+	playhead.clear();
+	playdip.clear();
+	
+	map<int,player>::iterator it;
+	for (it=players.begin();it!=players.end();it++) {
+		if (it->second.active) {
+			ofVec3f p=it->second.getWorldPosition()-position;
+			playang.push_back(p.angle(-direction.rotated(heading,ofVec3f(0,0,-1))));
+			playdist.push_back(p.length());
+			playpos.push_back(it->second.getWorldPosition());
+			float headif=(atan2(it->second.getWorldPosition().x-position.x,it->second.getWorldPosition().y-position.y)*RAD_TO_DEG)-heading;
+			while (headif>180) headif=headif-360;
+			while (headif <-180) headif=headif+360;
+			playhead.push_back(headif);
+		}
+	}
+	//fly towards nearest visible player
+	int nearest=-1;
+	float distance=9999;
+	for(int i=0;i<playhead.size();i++) {
+		if ((abs(playhead[i])<(fieldofview/2))&&playdist[i]<distance) {
+			nearest=i;
+			distance=playdist[i];
+		}
+	}
+	if (nearest>-1) turnRate=playhead[nearest];
+	
 }
 void bird::draw(){
 	glEnable(GL_DEPTH_TEST);
@@ -74,4 +114,9 @@ void bird::drawShadow(){
         model.drawAnimated();
     ofPopMatrix();
 }
+void bird::drawDebug(){	
+        ofSetHexColor(0xff00ff);
+        ofLine(pointer.s,pointer.s+1000*pointer.t);
+}
+
 
-- 
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