mkjs/code/engine/cameras/cameraIntro.js

118 lines
2.6 KiB
JavaScript

//
// cameraIntro.js
//--------------------
// Runs the intro camera for a scene.
// by RHY3756547
//
// includes: main.js
//
window.cameraIntro = function() {
var thisObj = this;
this.kart = kart;
this.getView = getView;
this.targetShadowPos = [0, 0, 0]
var mat = mat4.create();
var curCamNum = -1;
var curCam = null;
var route = null;
var routePos = 0;
var routeSpeed = 0;
var routeProg = 0;
var duration = 0;
var pointInterp = 0;
var normalFOV = 70;
var zoomLevel = 1;
var viewW;
var viewH;
function getView(scene, width, height) {
if (curCam == null) {
restartCam(scene);
}
viewW = width;
viewH = height;
if (zoomLevel < curCam.zoomMark1) zoomLevel += curCam.zoomSpeedM1;
else if (zoomLevel > curCam.zoomMark2) zoomLevel += curCam.zoomSpeedM2;
else zoomLevel += curCam.zoomSpeed;
if (zoomLevel > curCam.zoomEnd) zoomLevel = curCam.zoomEnd;
if (duration-- < 0) {
var cams = scene.nkm.sections["CAME"].entries;
if (curCam.nextCam != -1) {
curCamNum = curCam.nextCam;
curCam = cams[curCamNum];
zoomLevel = curCam.zoomStart;
initCam(scene, curCam)
} else {
restartCam(scene);
}
}
thisObj.view = camFunc(scene, curCam);
}
function restartCam(scene) {
var cams = scene.nkm.sections["CAME"].entries;
for (var i=0; i<cams.length; i++) {
if (cams[i].firstCam == 2) {
curCamNum = i;
curCam = cams[curCamNum];
zoomLevel = curCam.zoomStart;
initCam(scene, curCam)
}
}
}
function recalcRouteSpeed() {
routeSpeed = (curCam.routeSpeed/100)/60;
//(curCam.routeSpeed/20)/vec3.dist(route[routePos].pos, route[(routePos+1)%route.length].pos);
}
var camFunc = function(scene, came) {
var camPos = vec3.lerp([], route[routePos].pos, route[(routePos+1)%route.length].pos, routeProg);
routeProg += routeSpeed;
if (routeProg > 1) {
routePos = (routePos+1)%route.length;
routeProg = 0;
recalcRouteSpeed();
}
pointInterp += (curCam.pointSpeed/100)/60;
if (pointInterp > 1) pointInterp = 1;
var lookAtPos = vec3.lerp([], curCam.pos2, curCam.pos3, pointInterp)
vec3.scale(camPos, camPos, 1/1024);
vec3.scale(lookAtPos, lookAtPos, 1/1024);
var mat = mat4.lookAt(mat4.create(), camPos, lookAtPos, [0, 1, 0]);
var p = mat4.perspective(mat4.create(), (zoomLevel*normalFOV/180)*Math.PI, viewW / viewH, 0.01, 10000.0);
thisObj.targetShadowPos = lookAtPos;
return {p:p, mv:mat}
}
var initCam = function(scene, came) {
var routes = scene.paths;
route = routes[came.camRoute];
routePos = 0;
routeProg = 0;
duration = came.duration;
recalcRouteSpeed();
}
}