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#include <stdlib.h>
#include <math.h>
#include "constants.h"
#include "game.h"
#include "player.h"
#include "player_data.h"
#include "physics.h"
#include "assets.h"
#include "utils.h"
extern Game game;
static void AddPlayerSprites(Entity* player);
static inline Sprite* GetBodySprite(Entity* player) {
return &player->sprites[player->bodySpriteIndex];
}
typedef enum PlayerStates {
PLAYER_IDLE = 0,
PLAYER_WALKING = 1,
} PlayerStates;
Vector2 GetMovementDirection() {
Vector2 movementDirection = {0.0f, 0.0f};
if (IsKeyDown(KEY_W)) {
movementDirection.y = -1.0f;
} else if (IsKeyDown(KEY_S)) {
movementDirection.y = 1.0f;
}
if (IsKeyDown(KEY_A)) {
movementDirection.x = -1.0f;
} else if (IsKeyDown(KEY_D)) {
movementDirection.x = 1.0f;
}
if (Vector2Length(movementDirection) > 0.0f)
return Vector2Normalize(movementDirection);
return movementDirection;
}
void CameraFollow(const Entity* player) {
game.camera.target =
(Vector2) {fmaxf(WINDOW_WIDTH / 2.0f, player->position.x), 0.0f};
}
void UpdateAnimationState(Entity* player) {
Sprite* bodySprite = GetBodySprite(player);
if (Vector2Length(player->velocity) > 0.0)
bodySprite->currentAnimation = PLAYER_WALKING;
else
bodySprite->currentAnimation = PLAYER_IDLE;
}
void UpdateBodyFacing(Entity* player) {
Sprite* bodySprite = GetBodySprite(player);
if (player->velocity.x < 0)
bodySprite->flipX = true;
else if (player->velocity.x > 0)
bodySprite->flipX = false;
}
void UpdatePlayer(Entity* player, float deltaTime) {
player->velocity =
Vector2Scale(GetMovementDirection(), PLAYER_SPEED);
UpdateAnimationState(player);
UpdateBodyFacing(player);
MoveAndSlide(player, deltaTime);
CameraFollow(player);
UpdateCurrentSpriteAnimation(GetBodySprite(player), deltaTime);
}
void AddPlayer(float xpos, float ypos) {
Entity player = {0};
player.type = Player_Entity;
player.position = (Vector2) {xpos, ypos};
player.flags |= (ENTITY_PHYSICS_ACTIVE | ENTITY_VISIBLE);
player.physicsCollider = physicsCollider;
#ifdef BEATEMUP_DEBUG
player.physicsColliderColor = RED;
#endif
AddPlayerSprites(&player);
AddEntity(&player);
}
static void AddPlayerSprites(Entity* player) {
Asset* shadowTexture = GetMatchingAssetExitOnFail("human-shadow", Texture_Asset);
Sprite shadowSprite = (Sprite) {
.texture = shadowTexture->texture,
.layer = Foreground_Layer,
.destRect = shadowDestRect,
.srcRect = {
0,
0,
shadowTexture->texture.width,
shadowTexture->texture.height
},
.numAnimations = 0, //Not an animated sprite
};
AddSpriteToEntity(player, shadowSprite);
Asset* bodyTexture = GetMatchingAssetExitOnFail("player-body", Texture_Asset);
Sprite bodySprite = (Sprite) {
.texture = bodyTexture->texture,
.layer = Foreground_Layer,
.destRect = bodyDestRect,
.numAnimations = 0
};
//The body texture devided into a 10x10 grid
//with one cell representing a frame of animation
Animation idleAnimation =
AnimationFromIndices((AnimationFromIndicesParams){
.texture = bodyTexture->texture,
.isLooping = true,
.numFrames = 4,
.framesX = 10,
.framesY = 10,
.indices = (int[]) {0, 1, 2, 3},
.frameTimes = (float[]) {0.1f, 0.1f, 0.1f, 0.1f}
});
bodySprite.animations[PLAYER_IDLE] = idleAnimation;
Animation walkingAnimation =
AnimationFromIndices((AnimationFromIndicesParams){
.texture = bodyTexture->texture,
.isLooping = true,
.numFrames = 7,
.framesX = 10,
.framesY = 10,
.indices = (int[]) {10, 11, 12, 13, 14, 15, 16, 17},
.frameTimes = (float[]) {0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f}
});
bodySprite.animations[PLAYER_WALKING] = walkingAnimation;
bodySprite.numAnimations = 2;
player->bodySpriteIndex = AddSpriteToEntity(player, bodySprite);
}
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