Hi,
just wanted to show my game creation progress with my own Engine (NOWA-Engine) and Level editor (NOWA-Design).
Lua has been used for all game mechanics and artificial intelligence.
Ogre 3.x is used as Renderengine! Its wonderful, what can be done with Ogre 
https://www.youtube.com/watch?v=n09_DrqB-w8
For further details see:
https://www.lukas-kalinowski.com/Homepage/?page_id=1787
See also example ai enemy movement lua script:
Code: Select all
module("EnemyBehavior1", package.seeall);
enemy = nil;
aiLuaComponent = nil;
aiPathFollowComponent2D = nil;
animationComponent = nil;
animationBlender = nil;
movingBehavior = nil;
physicsActiveComponent = nil;
canJump = false;
EnemyBehavior1 = {};
function jumpHandling()
local centerOffset = enemy:getCenterOffset();
local contactData = physicsActiveComponent:getContactAhead(13, centerOffset, 2, false, ALL_CATEGORIES_ID);
local hitGameObject = contactData:getHitGameObject();
if (hitGameObject ~= nil) then
if (hitGameObject:getTagName() ~= "Player" and canJump == true) then
physicsActiveComponent:addImpulse(Vector3(0, 3, 0));
canJump = false;
else
local contactData = physicsActiveComponent:getContactBelow(0, Vector3.ZERO, false, ALL_CATEGORIES_ID);
local hitGameObject = contactData:getHitGameObject();
-- Enemy landed again, may jump again
if (hitGameObject ~= nil) then
if (contactData:getHeight() < 0.4) then
canJump = true;
end
end
end
end
end
function checkForSeek()
-- show ray
local centerOffset = enemy:getCenterOffset();
local contactData = physicsActiveComponent:getContactAhead2(12, centerOffset, 10, true, "Character");
-- hide ray again
local hitGameObject = contactData:getHitGameObject();
if (hitGameObject ~= nil and hitGameObject:getTagName() == "Player") then
log("[Lua]: Goto Seekstate");
aiLuaComponent:getMovingBehavior():setTargetAgentId(hitGameObject:getId());
aiLuaComponent:changeState(SeekState);
end
end
EnemyBehavior1["connect"] = function(gameObject)
enemy = gameObject;
aiLuaComponent = gameObject:getAiLuaComponent();
-- Still use aiPathFollowComponent2D, because each enemy has its own waypoints, but this script should be generic for certain enemies
aiPathFollowComponent2D = gameObject:getAiPathFollowComponent2D();
animationComponent = gameObject:getAnimationComponent();
animationBlender = animationComponent:getAnimationBlender();
movingBehavior = aiLuaComponent:getMovingBehavior();
physicsActiveComponent = gameObject:getPhysicsActiveComponent();
canJump = true;
animationBlender:registerAnimation(AnimationBlender.ANIM_IDLE_1, "idle-01");
animationBlender:registerAnimation(AnimationBlender.ANIM_IDLE_2, "idle-02");
animationBlender:registerAnimation(AnimationBlender.ANIM_IDLE_3, "joke");
animationBlender:registerAnimation(AnimationBlender.ANIM_WALK_NORTH, "walk-01");
animationBlender:registerAnimation(AnimationBlender.ANIM_WALK_SOUTH, "walk-01");
animationBlender:registerAnimation(AnimationBlender.ANIM_WALK_WEST, "walk-01");
animationBlender:registerAnimation(AnimationBlender.ANIM_WALK_EAST, "walk-01");
animationBlender:registerAnimation(AnimationBlender.ANIM_JUMP_START, "jump-01");
animationBlender:registerAnimation(AnimationBlender.ANIM_JUMP_WALK, "jump-0p");
animationBlender:registerAnimation(AnimationBlender.ANIM_HIGH_JUMP_END, "jump-pose");
animationBlender:registerAnimation(AnimationBlender.ANIM_JUMP_END, "jump-pose");
animationBlender:registerAnimation(AnimationBlender.ANIM_FALL, "jump-pose");
animationBlender:registerAnimation(AnimationBlender.ANIM_RUN, "run-01");
--animationBlender:registerAnimation(AnimationBlender.ANIM_SNEAK, "Take_damage");
--animationBlender:registerAnimation(AnimationBlender.ANIM_DUCK, "Land2");
--animationBlender:registerAnimation(AnimationBlender.ANIM_HALT, "Halt");
animationBlender:registerAnimation(AnimationBlender.ANIM_ATTACK_1, "attack-01");
animationBlender:registerAnimation(AnimationBlender.ANIM_ATTACK_2, "attack-02");
animationBlender:init1(AnimationBlender.ANIM_RUN, true);
end
IdleState = { };
IdleState["enter"] = function(gameObject)
--log("[Lua]: IdleState Current Behavior: " .. movingBehavior:getCurrentBehavior() .. " GO: " .. gameObject:getName());
movingBehavior:setBehavior(MovingBehavior.STOP);
animationBlender:blend5(AnimationBlender.ANIM_IDLE_1, AnimationBlender.BLEND_WHILE_ANIMATING, 0.2, true);
end
PatrolState = { };
PatrolState["enter"] = function(gameObject)
movingBehavior:setBehavior(MovingBehavior.FOLLOW_PATH_2D);
end
PatrolState["execute"] = function(gameObject, dt)
--log("[Lua]: PatrolState Current Behavior: " .. movingBehavior:getCurrentBehavior() .. " GO: " .. gameObject:getName());
checkForSeek();
jumpHandling();
end
PatrolState["exit"] = function(gameObject)
end
----------------------------------------------------------------------------------------------------------------
SeekState = { }
SeekState["enter"] = function(gameObject)
log("[Lua]: SeekState Current Behavior: " .. movingBehavior:getCurrentBehavior() .. " GO: " .. gameObject:getName());
movingBehavior:setBehavior(MovingBehavior.PURSUIT_2D);
canJump = true;
end
SeekState["execute"] = function(gameObject, dt)
--log("[Lua]: SeekState Current Behavior: " .. movingBehavior:getCurrentBehavior() .. " GO: " .. gameObject:getName() .. " can jump: " .. (canJump and 'true' or 'false'));
-- Here do not work with victims, because else the path is calculated for another victim and the position is checked for another one, so that its maybe more far away and MoveRandomlyState is set
local distance = gameObject:getPosition():squaredDistance(aiLuaComponent:getMovingBehavior():getTargetAgent():getPosition());
--log("Distance: " .. distance .. " Victim: " .. aiLuaComponent:getMovingBehavior():getTargetAgent():getName());
if distance < 2 * 2 then
aiLuaComponent:changeState(AttackState);
end
jumpHandling();
end
SeekState["exit"] = function(gameObject)
end
---------------------------------------------------------------------------------------------------------------
WanderState = { }
WanderState["enter"] = function(gameObject)
movingBehavior:setBehavior(MovingBehavior.WANDER_2D);
movingBehavior:setWanderJitter(100);
end
WanderState["execute"] = function(gameObject, dt)
checkForSeek();
jumpHandling();
end
WanderState["exit"] = function(gameObject)
end
---------------------------------------------------------------------------------------------------------------
AttackState = { }
AttackState["enter"] = function(gameObject)
-- Difference between NONE and STOP.
-- If none is on, add no force, so that other behaviors can still move the agent! Only stop adds force, even if its null
movingBehavior:setBehavior(MovingBehavior.STOP);
end
AttackState["execute"] = function(gameObject, dt)
--log("[Lua]: Current Behavior: " .. movingBehavior:getCurrentBehavior());
local distance = gameObject:getPosition():squaredDistance(aiLuaComponent:getMovingBehavior():getTargetAgent():getPosition());
--log("Distance: " .. distance .. " Victim: " .. aiLuaComponent:getMovingBehavior():getTargetAgent():getName());
if distance > 1 * 1 then
aiLuaComponent:changeState(SeekState);
end
animationBlender:blendAndContinue1(AnimationBlender.ANIM_ATTACK_1);
jumpHandling();
end
AttackState["exit"] = function(gameObject)
end
Best Regards
Lax
