source: code/branches/environment3/data/levels/includes/asteroidField.lua @ 8946

--[[ asteroid field generator
generates asteroid field
        posX, posY, posZ - position in space
        minSize, maxSize - size boundaries of each asteroid
        radius - size of the cube around position in space
        count - number of asteroids
--]]
function asteroidField(posX, posY, posZ, minSize, maxSize, radius, count)
        for i = 1, count, 1
        do
                size = (math.random() * (maxSize - minSize)) + minSize
                pX = (2 * math.random() * radius) - radius + posX
                pY = (2 * math.random() * radius) - radius + posY
                pZ = (2 * math.random() * radius) - radius + posZ
                print("<StaticEntity ")
                
                print("position = \"") 
                print(pX) print(",") 
                print(pY) print(",") 
                print(pZ) print("\"")
                
                print("scale = \"") print(size) print("\"")
                
                print("collisionType = static linearDamping = 0.8 angularDamping = 1 collisiondamage = 1000 enablecollisiondamage = true>")
                print("<attached> <Model mass=\"") print(size * 10) print("\" mesh=\"ast") print(math.mod(i,6) + 1) print(".mesh\" /> </attached>")
                print("<attached> <ForceField position=\"0,0,0\" mode=\"newtonianGravity\" diameter=\"") print(size * 2.7) print("\" massDiameter=\"") print(size * 2) print("\" mass=\"") print(size * 1000) print("\" /> </attached>")
                print("<collisionShapes> <SphereCollisionShape radius=\"") print(size*2.5) print("\" /> </collisionShapes>")
                print("</StaticEntity>")
        end
end


--[[ asteroid belt generator
generates asteroid belt
        posX, posY, posZ - position in space
        yaw, pitch - rotation
        minSize, maxSize - size boundaries of each asteroid
        radius0, radius1 - inner/outer radius
        count - number of asteroids
--]]
function asteroidBelt(centerX, centerY, centerZ, yaw, pitch, segments, minSize, maxSize, radius0, radius1, count)
        dPhi = (2 * math.pi) / segments
        width = math.abs(radius1 - radius0)
        radius = (radius1 + radius0) / 2
        segmentCount = count / segments
        
        print("<StaticEntity collisionType=static yaw=")
        print(yaw)
        print(" pitch=")
        print(pitch)
        print(" position = \"") 
                print(centerX) print(",") 
                print(centerY) print(",") 
                print(centerZ) print("\"") 
        print(">")
        print("<attached>")
        
        for i = 0, segments - 1, 1
        do
                asteroidField((radius * math.cos(i * dPhi)),
                                        (radius * math.sin(i * dPhi)),
                                        0, minSize, maxSize, width,segmentCount)
        end
        
        print("</attached>")
        print("</StaticEntity>")
end