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322 lines (265 loc) · 10.4 KB
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/*******************************************************************************************
*
* Sprite animation and movement example
*
* Welcome to raylib!
*
* To test examples, just press F6 and execute raylib_compile_execute script
* Note that compiled executable is placed in the same folder as .c file
*
* You can find all basic examples on C:\raylib\raylib\examples folder or
* raylib official webpage: www.raylib.com
*
* Enjoy using raylib. :)
*
* This example has been created using raylib 4.0 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2022 Jeffery Myers
*
********************************************************************************************/
#include "raylib.h"
#include "raymath.h"
#include "sprites.h"
#include <unordered_map>
#include <vector>
std::vector<Rectangle> Obstacles;
NPatchInfo ObstacleNpatch = { 0 };
Texture2D ObstacleTexture = { 0 };
enum class ActorStates
{
Idle,
Run,
JumpStart,
JumpUp,
FallDown,
};
struct Actor
{
ActorStates State = ActorStates::Idle;
bool FacingRight = true;
SpriteInstance Sprite;
std::unordered_map<ActorStates, std::vector<SpriteAnimation>> AnimationStates;
float RunSpeed = 200;
float jumpAcceleration = -350;
float jumpVelocityDampen = 1.125f;
Vector2 Velocity = { 0,0 };
};
Actor Warrior;
void LoadObstacles()
{
ObstacleTexture = LoadTexture("resources/panel_blue.png");
ObstacleNpatch.source = Rectangle{ 0,0, (float)ObstacleTexture.width, (float)ObstacleTexture.height };
ObstacleNpatch.top = 20;
ObstacleNpatch.bottom = 20;
ObstacleNpatch.right = 20;
ObstacleNpatch.left = 20;
Obstacles.emplace_back(Rectangle{ 200,-100, 200, 50 });
Obstacles.emplace_back(Rectangle{ 200,-200, 200, 25 });
Obstacles.emplace_back(Rectangle{ 600,-50, 200, 50 });
Obstacles.emplace_back(Rectangle{ 900,-150, 200, 50 });
}
int main(void)
{
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "sprite animation");
// setup the world
Camera2D cam = { 0 };
cam.zoom = 1;
cam.offset.x = 20;
cam.offset.y = GetScreenHeight() - 50.0f;
cam.target.x = 0;
cam.target.y = 0;
float gravity = 500.0f;
LoadObstacles();
// load our sprite sheet
SpriteSheet warriorSheet = LoadSpriteSheet("resources/Warrior_Sheet-Effect.png", 6, 17);
// create left facing versions of all the sprites
int leftFrameStart = AddFippedFrames(warriorSheet, 0, (int)warriorSheet.Frames.size() - 1, true, false);
// create our warrior
Warrior.Sprite = SpriteInstance{ Vector2{0, 0}, Vector2{warriorSheet.Frames[0].width / 2,warriorSheet.Frames[0].height }, &warriorSheet };
// define an animation for each state
Warrior.AnimationStates[ActorStates::Idle].emplace_back(SpriteAnimation{ "right_idle", 0, 5, 5 });
Warrior.AnimationStates[ActorStates::Idle].emplace_back(SpriteAnimation{ "left_idle", leftFrameStart + 0, leftFrameStart + 5, 5 });
Warrior.AnimationStates[ActorStates::Run].emplace_back(SpriteAnimation{ "right_run", 6, 13 });
Warrior.AnimationStates[ActorStates::Run].emplace_back(SpriteAnimation{ "left_run", leftFrameStart + 6, leftFrameStart + 13 });
Warrior.AnimationStates[ActorStates::JumpStart].emplace_back(SpriteAnimation{ "right_jump", 41, 43, 15 ,false});
Warrior.AnimationStates[ActorStates::JumpStart].emplace_back(SpriteAnimation{ "left_jump", leftFrameStart +41, leftFrameStart + 43, 15 ,false });
Warrior.AnimationStates[ActorStates::JumpUp].emplace_back(SpriteAnimation{ "right_fly", 43, 43, 10 });
Warrior.AnimationStates[ActorStates::JumpUp].emplace_back(SpriteAnimation{ "left_fly", leftFrameStart + 43, leftFrameStart + 43, 10 });
Warrior.AnimationStates[ActorStates::FallDown].emplace_back(SpriteAnimation{ "right_fall", 46, 48, 10 });
Warrior.AnimationStates[ActorStates::FallDown].emplace_back(SpriteAnimation{ "left_fall", leftFrameStart + 46, leftFrameStart + 48, 10 });
SetSpriteAnimation(Warrior.Sprite, Warrior.AnimationStates[ActorStates::Idle][0]);
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// get the input
int runDir = 0;
if (IsKeyDown(KEY_D))
runDir += 1;
if (IsKeyDown(KEY_A))
runDir += -1;
bool wantJump = IsKeyDown(KEY_SPACE);
if (IsKeyPressed(KEY_Z))
{
if (cam.zoom == 1)
cam.zoom = 1.5f;
else
cam.zoom = 1;
}
// apply input and change any states as needed
switch (Warrior.State)
{
case ActorStates::Idle:
if (wantJump)
{
if (IsKeyDown(KEY_S))
{
Warrior.State = ActorStates::FallDown;
Warrior.Sprite.Position.y += gravity * GetFrameTime();
}
else
{
Warrior.State = ActorStates::JumpStart;
Warrior.Velocity.y = Warrior.jumpAcceleration;
Warrior.Velocity.x = 0;
}
}
else if (runDir != 0)
{
Warrior.State = ActorStates::Run;
Warrior.FacingRight = runDir > 0;
}
else
{
Warrior.Velocity.x = 0;
Warrior.Velocity.y = 0;
}
break;
case ActorStates::Run:
if (wantJump)
{
Warrior.State = ActorStates::JumpStart;
Warrior.Velocity.y = Warrior.jumpAcceleration;
Warrior.Velocity.x *= Warrior.jumpVelocityDampen;
}
else if (runDir == 0)
{
Warrior.State = ActorStates::Idle;
}
else
{
Warrior.FacingRight = runDir > 0;
Warrior.Velocity.x = runDir * Warrior.RunSpeed;
Warrior.Velocity.y = 0;
}
break;
case ActorStates::JumpStart:
if (Warrior.Velocity.y >= 0)
Warrior.State = ActorStates::FallDown;
else if (Warrior.Sprite.AnimationDone)
Warrior.State = ActorStates::JumpUp;
break;
case ActorStates::JumpUp:
if (Warrior.Velocity.y >= 0)
Warrior.State = ActorStates::FallDown;
break;
case ActorStates::FallDown:
break;
}
// if we can fall, make us fall
Warrior.Velocity.y += gravity * GetFrameTime();
// move us how we want to move
Vector2 newPos = Vector2Add(Warrior.Sprite.Position, Vector2Scale(Warrior.Velocity, GetFrameTime()));
if (newPos.y > 0)
{
newPos.y = 0;
Warrior.Velocity.y = 0;
if (Warrior.State == ActorStates::FallDown)
Warrior.State = ActorStates::Idle;
}
for (const Rectangle& obstacle : Obstacles)
{
if (CheckCollisionPointRec(newPos, obstacle) && Warrior.Sprite.Position.y <= obstacle.y)
{
// new point would be in the obstacle
if (Warrior.Sprite.Position.y < newPos.y)
{
// we are falling into the block, stop if we were falling
if (Warrior.State == ActorStates::FallDown)
{
Warrior.Velocity.x = 0;
Warrior.Velocity.y = 0;
newPos.y = obstacle.y;
Warrior.State = ActorStates::Idle;
}
else
{
// we just know we can't go any further down
Warrior.Velocity.y = 0;
newPos.y = obstacle.y;
}
}
}
}
// are we not falling, but now we are falling?
if (Warrior.State != ActorStates::FallDown && Warrior.Velocity.y > 0)
{
Warrior.State = ActorStates::FallDown;
}
Warrior.Sprite.Position = newPos;
// if we are not on the animation we want to be on, set us to that animation
if (Warrior.Sprite.Animation != &(Warrior.AnimationStates[Warrior.State][Warrior.FacingRight ? 0 : 1]))
{
SetSpriteAnimation(Warrior.Sprite, Warrior.AnimationStates[Warrior.State][Warrior.FacingRight ? 0 : 1]);
}
// update this frame of animation
UpdateSpriteAnimation(Warrior.Sprite);
Vector2 playerScreenPos = GetWorldToScreen2D(Warrior.Sprite.Position, cam);
if (playerScreenPos.x < 10)
cam.target.x -= (GetScreenWidth() - 50)/cam.zoom;
if (playerScreenPos.x > GetScreenWidth() - 25)
cam.target.x += (GetScreenWidth() - 50)/cam.zoom;
if (playerScreenPos.y < 10)
cam.target.y -= (GetScreenHeight() - 50) / cam.zoom;
if (playerScreenPos.y > GetScreenHeight() - 25)
cam.target.y += (GetScreenHeight() - 50) / cam.zoom;
// draw the world
BeginDrawing();
ClearBackground(SKYBLUE);
BeginMode2D(cam);
DrawRectangle((int)(cam.target.x - cam.offset.x), 0, GetScreenWidth(), 50, BROWN);
for (Rectangle& rect : Obstacles)
{
// DrawRectangleRec(rect, GRAY);
DrawTextureNPatch(ObstacleTexture, ObstacleNpatch, rect, Vector2Zero(), 0, WHITE);
}
DrawSprite(Warrior.Sprite);
EndMode2D();
const char* stateName = "Unknown";
switch (Warrior.State)
{
case ActorStates::Idle:
stateName = "Idle";
break;
case ActorStates::Run:
stateName = "Running";
break;
case ActorStates::JumpStart:
stateName = "Jump";
break;
case ActorStates::JumpUp:
stateName = "Flying Up";
break;
case ActorStates::FallDown:
stateName = "Falling";
break;
}
DrawText(TextFormat("state:%s",stateName), 10, 10, 20, BLACK);
EndDrawing();
}
UnloadTexture(warriorSheet.SheetTexture);
CloseWindow();
return 0;
}
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