Need help with first lite c project

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Need help with first lite c project #347748 11/18/10 15:51 11/18/10 15:51
Joined: Nov 2010 Posts: 21 E elegant_mistake OP Newbie
elegant_mistake OP Newbie E Joined: Nov 2010 Posts: 21	Hi everyone. I just finished the initial tutorials. Now I am trying to slowly develop my skills by making little projects. I have made a project with a guy that walks around in a room. I have set it so the camera follows over the shoulder of the walking guy. Now I want to make it so that if the Alt key is pressed, the arrow buttons will move the camera around the guy but still look toward the guy, as in Secondlife. Can anybody steer me in the right direction of how to code that? or if you have a snipped of code with comments so I can figure out how it works, that would be cool too. Thanks. Here is my crappy little program: //make a guy that walks around// #include <acknex.h> #define STATE skill1 #define ANIMATION skill2 var walk_percentage; function main() { level_load("walkin_room.wmb"); } function camera_follow(ENTITY* ent) { while(1) { vec_set(camera.x,vector(-150,10,50)); // camera position relative to the player vec_rotate(camera.x,ent.pan); // rotate the camera position with the player vec_add(camera.x,ent.x); // add player position vec_set(camera.pan,vector(ent.pan,-10,0)); // look in player direction, slighty down wait(1); } } action walkA() { while(1) { my.pan += (key_cul - key_cur)8time_step;//make it so he can turn// var distance = (key_cuu - key_cud)8time_step; c_move(me, vector(distance,0, 0), NULL, GLIDE);//make him move forward and back// my.ANIMATION += 2*distance; ent_animate(me, "walkA", my.ANIMATION, ANM_CYCLE); if (key_space) { ent_animate(me, "jumpA", my.ANIMATION, ANM_CYCLE); } camera_follow(me); wait(1); } } p.s.I am really enjoying gamestudio so far. I haven't done any programming since I packed away my old Radio Shack color computer2 about twenty-five years ago, but programming seems easier now than it did back then. I need to come up with a better signature

Re: Need help with first lite c project [Re: elegant_mistake] #347754
11/18/10 16:42 11/18/10 16:42

Joined: May 2009
Posts: 5,377
Caucasus

3run

Senior Expert

3run

Senior Expert

Joined: May 2009
Posts: 5,377
Caucasus

Here you go, this will be enough for a good start I guess. Good luck.

Code:

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

#include <acknex.h>
#include <default.c>

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

VECTOR dist;
VECTOR absdist;
VECTOR cam_set;

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

var my_height;

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

#define health skill1

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

function main()
{
	video_set(800,600,32,0);
	fps_max = 60;
	level_load("1.WMB");
	wait(1);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

function handle_size(ENTITY* ent,var scale)
{
	ent.scale_x = scale;
	ent.scale_y = scale;
	ent.scale_z = scale;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

function handle_camera() 
{
	camera.tilt += 10 * mouse_force.y * time_step; // turn it TILT, play with 10 for speed 
	camera.tilt = clamp(camera.tilt,-80,80); // limit cameras TILT 
	vec_set(camera.x,vector(-100,-25,70)); // place camera near right shoulder
	vec_rotate(camera.x,my.pan); // turn camera with player
	vec_add(camera.x,my.x); // add camera to player 
	if(!key_alt) // if ALT isn't pressed
	{
		camera.pan %= 360;
		camera.pan += (my.pan - camera.pan) * 1 * time_step; // turn PAN after player (play with 1)
		my.pan -= 10 * mouse_force.x * time_step; // turn players PAN
	}
	else
	{
		camera.pan %= 360;
		camera.pan -= 10 * key_force.x * time_step; // turn cameras PAN with cursors
	}
}

function handle_gravity()
{
	my_height = c_trace(my.x,vector(my.x,my.y,my.z - 1000),IGNORE_PASSABLE|IGNORE_MODELS|USE_BOX);
	if(my_height > 10)
	{
		absdist.z -= 1 * time_step;
	}
	else
	{
		absdist.z = 0;
	}
}

function handle_animation()
{
	if(key_w || key_s || key_a || key_d)
	{
		if(key_shift)
		{
			ent_animate(my,"run",my.skill48,ANM_CYCLE);
			my.skill48 += 10 * time_step;
		}
		else
		{
			ent_animate(my,"walk",my.skill48,ANM_CYCLE);
			my.skill48 += 6 * time_step;
		}
	}
	else
	{
		ent_animate(my,"stand",my.skill48,ANM_CYCLE);
		my.skill48 += 2 * time_step;
	}
}

function handle_movement()
{
	if(key_shift)
	{
		dist.x = 20 * (key_w - key_s) * time_step;
		dist.y = 20 * (key_a - key_d) * time_step;
	}
	else
	{
		dist.x = 10 * (key_w - key_s) * time_step;
		dist.y = 10 * (key_a - key_d) * time_step;
	}
}

action hero_()
{
	player = my;
	handle_size(my,1);
	my.eflags |= FAT | NARROW; 
	vec_set(my.min_x,vector(-25,-25,-60)); 
	vec_set(my.max_x,vector(25,25,60));
	my.health = 100;
	while(my.health > 0)
	{
		handle_movement();
		handle_gravity(); 
		handle_animation();
		c_move(my,dist,absdist,IGNORE_PASSABLE|GLIDE);
		handle_camera();
		wait(1);
	}
	error("YOU ARE DEAD!"); // DEATH HERE
}

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

PANEL* gui_ =
{
	layer = 4;
	digits(10,0,4,"Arial#24bi",1,player.skill1); 
	flags = SHOW;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

Some screen, to show how camera is placed on shoulder:

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